WO2021195884A1 - Optical system, photography device, and movable platform - Google Patents
Optical system, photography device, and movable platform Download PDFInfo
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- WO2021195884A1 WO2021195884A1 PCT/CN2020/082197 CN2020082197W WO2021195884A1 WO 2021195884 A1 WO2021195884 A1 WO 2021195884A1 CN 2020082197 W CN2020082197 W CN 2020082197W WO 2021195884 A1 WO2021195884 A1 WO 2021195884A1
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- lens
- optical system
- distance
- photographing device
- focal length
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/022—Mountings, adjusting means, or light-tight connections, for optical elements for lenses lens and mount having complementary engagement means, e.g. screw/thread
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/025—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using glue
Definitions
- This application relates to the field of optical technology, and in particular to an optical system, a photographing device using the optical system, and a movable platform.
- the present application provides an optical system, a photographing device, and a movable platform.
- the optical system is used to increase the field of view of the photographing device and at the same time improve the imaging quality.
- the present application provides an optical system including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens arranged in order from the object side to the image side And a seventh lens, the first lens, the second lens, the fifth lens, and the seventh lens have negative refractive power, and the third lens, the fourth lens, and the sixth lens have positive refractive power;
- optical system satisfies the following expression:
- f is the focal length of the optical system
- f 1 is the focal length of the first lens
- f 2 is the focal length of the second lens
- f 3 is the focal length of the third lens
- f 4 is the first lens.
- the focal length of the four lenses f 5 is the focal length of the fifth lens
- f 6 is the focal length of the sixth lens
- f 7 is the focal length of the seventh lens
- TL is the lens near the object side of the first lens
- BFL is the distance on the optical axis from the center of the lens surface of the seventh lens near the image side to the imaging surface.
- the present application also provides a photographing device.
- the photographing device includes an optical system and a photographing device.
- the optical system is connected to the photographing device.
- the optical system includes The first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens, the first lens, the second lens, the fifth lens, and the seventh lens have negative refractive power ,
- the third lens, the fourth lens, and the sixth lens have positive refractive power;
- optical system satisfies the following expression:
- f is the focal length of the optical system
- f 1 is the focal length of the first lens
- f 2 is the focal length of the second lens
- f 3 is the focal length of the third lens
- f 4 is the first lens.
- the focal length of the four lenses f 5 is the focal length of the fifth lens
- f 6 is the focal length of the sixth lens
- f 7 is the focal length of the seventh lens
- TL is the lens near the object side of the first lens
- BFL is the distance on the optical axis from the center of the lens surface of the seventh lens near the image side to the imaging surface.
- the present application also provides a movable platform.
- the movable platform includes a platform body and a photographing device, the photographing device is mounted on the platform body; the photographing device includes an optical system and a photographing device, The optical system is connected to the photographing device, and the optical system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a first lens, which are sequentially arranged from the object side to the image side. Seven lenses, the first lens, the second lens, the fifth lens, and the seventh lens have negative refractive power, and the third lens, the fourth lens, and the sixth lens have positive refractive power;
- optical system satisfies the following expression:
- f is the focal length of the optical system
- f 1 is the focal length of the first lens
- f 2 is the focal length of the second lens
- f 3 is the focal length of the third lens
- f 4 is the first lens.
- the focal length of the four lenses f 5 is the focal length of the fifth lens
- f 6 is the focal length of the sixth lens
- f 7 is the focal length of the seventh lens
- TL is the lens near the object side of the first lens
- BFL is the distance on the optical axis from the center of the lens surface of the seventh lens near the image side to the imaging surface.
- the optical system, the photographing device and the movable platform provided by the embodiments of the present application, wherein the optical system can be detachably installed on the photographing device, and the photographing device can be installed on the main body of the movable platform.
- the optical system utilizes seven The combination of lenses and specific parameter settings increase the field of view of the shooting device, and at the same time improve the imaging quality of the shooting device.
- FIG. 1 is a schematic structural diagram of an optical system provided by an embodiment of the present application.
- FIG. 2 is a schematic diagram of the configuration of an optical system provided by an embodiment of the present application.
- FIG. 3 is a schematic structural diagram of another optical system provided by an embodiment of the present application.
- FIG. 4 is a schematic structural diagram of an optical system provided by an embodiment of the present application.
- FIG. 5 is a schematic structural diagram of another view angle of the optical system provided by an embodiment of the present application.
- FIG. 6 is a schematic structural diagram of a photographing device provided by an embodiment of the present application.
- Fig. 7 is a schematic structural diagram of a movable platform provided by an embodiment of the present application.
- Optical system 101, first lens; 102, second lens; 103, third lens, 104, fourth lens; 105, fifth lens; 106, sixth lens; 107, seventh lens;
- FIG. 1 is a schematic structural diagram of an optical system provided by an embodiment of the present application.
- the optical system can be used to increase the angle of view of the shooting device, and at the same time can improve the imaging quality.
- the optical system 100 includes a first lens 101, a second lens 102, a third lens 103, a fourth lens 104, a fifth lens 105, a sixth lens 106 and The seventh lens 107.
- the first lens 101, the second lens 102, the fifth lens 105, and the seventh lens 107 have negative refractive power
- the third lens 103, the fourth lens 104, and the sixth lens 106 have positive refractive power.
- the optical system 100 also satisfies the following expression:
- f is the focal length of optical system 100
- f 1 is the focal length of the first lens 101
- f 2 is the focal length of the second lens 102
- f is the focal length of the third lens.
- 3 103, f. 4 are The focal length of the four lens 104
- f 5 is the focal length of the fifth lens 105
- f 6 is the focal length of the sixth lens 106
- f 7 is the focal length of the seventh lens 107
- TL is the lens surface center of the first lens 101 near the object side.
- the distance on the optical axis from the imaging surface I; BFL is the distance from the center of the lens surface of the seventh lens 107 on the image side to the imaging surface I on the optical axis.
- ⁇ 5 helps to shorten the overall length of the optical system 100
- ⁇ 0.5 helps to improve the optical system 100
- the focal length because the back focal length is longer, the image sensor is farther away from the mirror of the optical system. Therefore, the image of dust on the image surface is relatively weak, thereby preventing the influence of dust on the image surface.
- the aperture stop S of the optical system 100 is located between the third lens 103 and the fourth lens 104.
- the distance between the positions of the aperture stop S of the optical system 100 is greater than 4 mm, where the distance between the positions is the distance between two lenses adjacent to the aperture stop S, specifically the third The distance between the lens 103 and the fourth lens 104.
- the aperture stop S can be realized with a variable diaphragm, and the position interval is greater than 4mm, which is beneficial to set the variable diaphragm, that is, it facilitates the realization of the mechanical structure of the variable diaphragm, thereby facilitating the design of the optical system diaphragm.
- the optical system provided by the above-mentioned embodiments can increase the field of view of the optical system.
- the optical system has a compact structure.
- the total length of the system is shortened, that is, the total length of the entire internal focusing optical system of the optical system (the distance from the vertex of the object side of the first lens 101 to the imaging surface I) is less than 29mm, and the entire lens system (the vertex of the object side of the first lens 101 to the seventh
- the apex distance of the image side of the lens 107 is less than 23 mm, so that the optical system can be miniaturized, lightened, and portable.
- the optical system 100 in order to further reduce the weight of the optical system and realize the lightweight and portability of the optical system, the optical system 100 includes at least one lens made of plastic material.
- the seven lenses of the optical system 100 may also include at least one lens made of glass.
- the second lens 102 is made of plastic material, and several other lenses are made of common materials such as glass; or, for example, the second lens 102 is made of glass material, and the other lenses are made of common materials such as plastic.
- At least one of the second lens 102, the fifth lens 105, and the seventh lens 107 is a lens made of plastic.
- the first lens 101 and the seventh lens 107 may be made of glass, and the second lens 102, the third lens 103, the fourth lens 104, the fifth lens 105, and the sixth lens 106 may be made of plastic.
- the material can not only reduce the weight of the optical system, but also prevent the lens of the optical system from scratching.
- At least one lens in the optical system 100 is an aspheric lens.
- an aspheric lens means that at least one of the two lens surfaces of the lens is aspheric.
- At least one of the two lens surfaces of at least one of the second lens 102, the fifth lens 105, the sixth lens 106, and the seventh lens 107 is aspherical. It can effectively correct the distortion and chromatic aberration caused by an excessively large field of view, and can also improve the overall resolution of the optical system and realize the miniaturization of the lens.
- At least one of the two lens surfaces of at least one of the second lens 102, the fifth lens 105, the sixth lens 106, and the seventh lens 107 is aspherical.
- both lens surfaces may be Aspherical.
- At least one of the lens surface 3 and the lens surface 4 of the second lens 102 is aspherical; and/or, at least one of the lens surface 10 and the lens surface 11 of the fifth lens 105 is a mirror surface Is an aspherical surface; and/or, at least one of the lens surface 12 and the lens surface 13 of the sixth lens 106 is aspherical; and/or, at least one of the lens surface 14 and the lens surface 15 of the seventh lens 107 has a mirror surface It is aspherical. Of course, all of them may be aspherical.
- At least one of the two lens surfaces of each of the second lens 102, the fifth lens 105, the sixth lens 106, and the seventh lens 107 is aspherical. It can more effectively correct the distortion and chromatic aberration caused by an excessively large field of view, and can also improve the overall resolution of the optical system and realize the miniaturization of the lens.
- At least one of the lens surface 3 and the lens surface 4 of the second lens 102 is aspherical; and at least one of the lens surface 10 and the lens surface 11 of the fifth lens 105 is aspherical; At least one of the lens surface 12 and the lens surface 13 of the sixth lens 106 is aspherical; and at least one of the lens surface 14 and the lens surface 15 of the seventh lens 107 is aspherical. Of course, all of them may be aspherical.
- the distance from the center vertex of the lens surface of the seventh lens 107 close to the image side to the imaging surface I is greater than a preset distance.
- the preset distance such as setting the preset distance to 5.6mm, the safety of the optical system during use can be ensured, and at the same time, it can help reduce the impact of dust on the image quality and reserve space.
- At least one of the second lens 102 to the seventh lens 107 of the optical system 100 can be used as an internal focusing lens group, of course, two lenses can also be combined as an internal focusing lens group.
- the focus can be realized from the object at infinity (or the object at the closest distance) to the object at the closest distance (or the object at infinity), especially the shooting effect is better at different object distances in the range of 0.3m to infinity. This solves the problem that the existing lens can only shoot objects in a certain range or a certain focal range.
- At least one of the second lens 102 to the seventh lens 107 of the optical system 100 can be used as an inner focusing lens group, which can well control the aberration caused by the focusing lens during the movement process, thereby improving the overall optical system 100 Optical image quality.
- the distance between the focusing lens and the adjacent lens during internal focusing is at least greater than 1.1 mm. It can effectively avoid the collision of the front and rear mechanical structures used for the focusing lens, and ensure the safety of the optical system.
- the fourth lens 104 is used as the inner focusing lens group, and the interval between the fourth lens 104 and the adjacent lenses (the third lens 103 and the fourth lens 105) during internal focusing is at least greater than 1.1 mm.
- the adjustment amount corresponding to the inner focusing lens group is less than 0.5 mm, and the optical system The breathing effect is small, and the change in the field of view of the picture is less than 0.5°, thereby improving the image quality.
- the focus group weight can also be controlled to be less than 0.2g, so the focusing speed is improved, and good performance can be obtained when focusing at close range.
- the optical system 100 in order to correct the chromatic aberration of the optical system and improve the imaging quality, the optical system 100 satisfies the following expression:
- vd 1 , vd 2 , vd 3 , vd 4 , vd 5 , vd 6 , and vd 7 are the first lens 101, the second lens 102, the third lens 103, the fourth lens 104, Dispersion coefficients of the fifth lens 105, the sixth lens 106, and the seventh lens 107.
- the second lens 102, the fifth lens 105, the sixth lens 106, and the seventh lens 107 in the optical system 100 satisfy the following expression: 0 ⁇ (vd 2 ,vd 5 ,vd 7 ) ⁇ 30,vd 6 > 75.
- the chromatic aberration of the optical system can be better corrected, that is, the chromatic aberration of the optical system can be reduced more effectively to improve the imaging quality of the optical system.
- the optical system 100 in order to correct the chromatic aberration of the optical system and improve the imaging quality, the optical system 100 satisfies the following expression:
- nd 1 , nd 2 , nd 3 , nd 4 , nd 5 , nd 6 , and nd 7 are the first lens 101, the second lens 102, the third lens 103, the fourth lens 104, The refractive indices of the fifth lens 105, the sixth lens 106, and the seventh lens 107.
- the third lens 103 and the sixth lens 106 in the optical system 100 satisfy the following expressions: nd 3 >1.85 and nd 6 ⁇ 1.55.
- the chromatic aberration of the optical system can be reduced more effectively to improve the imaging quality of the optical system.
- the optical system 100 can satisfy expression (2) and expression (3) at the same time, and the imaging quality of the optical system can be further improved.
- the following expressions are satisfied: 0 ⁇ (vd 2 ,vd 5 ,vd 7 ) ⁇ 30, vd 6 >75, nd 3 >1.85, nd 6 ⁇ 1.55, the chromatic aberration of the optical system can be corrected to improve the optical The imaging quality of the system.
- the first lens 101 in the optical system 100 satisfies the following expression:
- D 1 is the diameter of the first lens 101
- R 1 is the curvature radius of the lens surface of the first lens 101 close to the object side
- R 2 is the curvature of the lens surface of the first lens 101 close to the image side radius.
- the optical system in order to miniaturize and lighten the optical system, is further limited, that is, the optical system 100 satisfies the following expression:
- TL is the distance on the optical axis from the center vertex of the lens surface of the first lens 101 close to the object side to the imaging surface
- T 1 to T 7 are the first lens 101, the second lens 102, and the first lens 101, respectively.
- a 1 is the interval between the first lens 101 and the second lens 102
- a 2 is the second lens
- a 3 is the interval between the third lens 103 and the fourth lens 104
- a 4 is the interval between the fourth lens 104 and the fifth lens 105
- a 5 is the fifth lens
- a 6 is the interval between the sixth lens 106 and the seventh lens 107.
- ⁇ 0.2 helps to realize the mechanical structure of the iris diaphragm of the optical system; the limitation of 0.035 ⁇
- the optical system may further include an infrared lens (IR lens) 108, which is disposed between the seventh lens 107 and the imaging surface I, specifically, it may be close to the imaging surface I. set up.
- IR lens infrared lens
- the two mirror surfaces or aspheric lens surfaces of the aforementioned aspheric lens are both high-order aspheric surfaces, and the high-order aspheric surface is adopted to satisfy the following expression:
- z is the aspheric rotational symmetry axis
- c is the curvature of the vertex
- y is the radial coordinate, and its unit is the same as the unit length of the lens
- k is the conic constant
- a 1 to a 8 represent each The coefficient corresponding to the radial coordinate.
- the surface numbers 1, 2,..., 15 represent the surface numbers in the optical system, and represent the first lens 101 and the second lens 101, respectively.
- the two lens surfaces of the first lens 101 are surface 1 and surface 2
- the two lens surfaces of the second lens 102 are surface 3 and surface 4, and the two lens surfaces of the third lens 103 respectively.
- the lens surfaces are surface 5 and surface 6
- the aperture stop S is surface 7
- the two lens surfaces of the fourth lens 104 are surface 8 and surface 9
- the two lens surfaces of the fifth lens 105 are surface 10 and surface respectively.
- the two lens surfaces of the sixth lens 106 are surface 12 and surface 13, respectively
- the two lens surfaces of the seventh lens 107 are surface 14 and surface 15 respectively.
- the radius of curvature represents the degree of curvature of the lens surface, which can be represented by R.
- R The smaller the value of R, the more curved the lens surface; the interval or thickness (Thickness), the interval is expressed as the distance between the lenses of the optical system.
- the separation distance on the axis, the thickness is the center thickness of the lens; Nd represents the refractive index of the lens; Vd represents the dispersion coefficient of the lens, also known as the Abbe coefficient; “Infinity” represents the plane; “Air” represents the air; “A(13 )” represents the distance between the 13th surface, and “A(15)” represents the distance between the 15th surface.
- A(15) it specifically represents the air gap before and after the seventh lens 107, which serves as the inner focusing lens.
- the focusing amount is different, so the air gap value of the 13th surface and the 15th surface are different.
- k is a conic constant, and a 1 to a 8 respectively represent the coefficients corresponding to each radial coordinate.
- Table 3 shows the corresponding focal length, image-side F number (aperture F number), field of view (FOV), and the amount of change in the movement of the inner focus group when focusing from the infinite object distance to the closest distance.
- the movement of the inner focus group The amount of change is AC(13) and AC(15).
- Table 1 shows the surface parameter data of the optical system
- Table 2 shows the aspheric coefficient data of each surface of the optical system
- Table 3 shows the configuration data of the optical system lens group
- the optical system provided by the present application has the following advantages:
- the optical system provided by the present application has a compact structure and adopts a structure that positions the diaphragm as close to the object side as possible, so that the total length of the optical system is shortened, that is, the total length of the entire inner focusing optical system (the first lens 101 is close to the object side).
- the distance from the apex of the lens surface to the imaging surface) is less than 29mm, and the lens system of the entire optical system (the distance from the apex of the first lens 101 near the object side to the apex of the seventh lens 107 near the image side) is less than 23mm.
- the optical system provided by this application uses a single lens or two cemented lenses for internal focusing as the focusing method, so that the overall focusing weight of the system is lighter (the focusing group weight is less than 0.2g) and the focusing speed is faster , And good performance can also be obtained when shooting at close range;
- the focusing amount of the optical system provided by this application is small, and the overall focusing amount is less than 0.5mm, so that the breathing effect of the system is small (the change in the field of view of the picture is less than 1°);
- the optical system provided in this application can achieve a wide range of system shooting, clear imaging, and can achieve shooting at different object distances from 0.3m to infinity; the peripheral brightness ratio is improved during design; even when the aperture is fully opened, The peripheral brightness ratio is also more than 30%, and the light passing through the entire lens appears more evenly on the screen, effectively avoiding the problem of lens vignetting; FOV is greater than 115°, and the shooting field of view is larger;
- the optical system provided by this application through the combination of glass and plastic aspherical lenses, can achieve an imaging effect with a large image area ( ⁇ 16mm), high image quality, and high resolution greater than 20M (20 million pixels).
- the optical system 100 of the present application further includes a housing 110, in which a first lens 101, a second lens 102, a third lens 103, a fourth lens 104, a fifth lens 105, and a Both the six lens 106 and the seventh lens 107 are installed in the housing 110. Among them, it also includes an adjustment mechanism for achieving internal focusing.
- the housing 110 of the optical system 100 may also have a threaded hole 111 through which the optical system 100 can be fixed to the lens of the shooting device, thereby realizing the interchangeability of the optical system.
- FIG. 6 is a schematic structural diagram of a photographing device provided by an embodiment of the present application.
- the camera uses an interchangeable optical system to increase the angle of view to achieve a large image surface and high-quality imaging effects.
- the photographing apparatus 200 includes an optical system 100 and a photographing device 21, and the optical system 100 adopts any optical system provided in the above-mentioned embodiments.
- the photographing device 200 is an electronic device capable of photographing, including a mobile phone, a digital camera, a sports camera, a wearable device, or a handheld pan-tilt camera.
- the optical system 100 and the photographing device 21 are detachably connected or fixedly connected.
- the detachable connection is convenient for users to use.
- the optical system 100 and the photographing device 21 are fixed by one or more of magnetic attraction, pasting, screwing, or buckle.
- the optical system 100 and the photographing device 21 are fixed by magnetic attraction, the optical system 100 and the photographing device 21 are connected by a magnet male and female pair of attraction.
- a magnet may be installed on the optical system 100 , And the corresponding position of the photographing device 21 is equipped with opposite magnetic poles or metal parts that can be attracted by the magnet. The reverse is also true.
- the magnet can also be installed on the photographing device 21.
- the optical system 10 is equipped with opposite magnetic poles or metal parts that can be attracted by the magnet.
- the shooting device 21 is a sports camera, and includes a lens group 210, a display screen 211 and a shooting button 212.
- the lens group 210 is used to image the scene on the sensor of the shooting device 21, such as a COMS sensor or a CCD sensor;
- the display screen 211 is used to display imaging, and the display screen 211 is a touch screen;
- the shooting button 212 is used to trigger shooting.
- the photographing device 21 includes a lens group 210, and the seventh lens 107 of the optical system 100 is kept at a certain distance from the outermost lens of the lens group 210. For example, it is larger than 6mm to connect the optical system and the shooting device 21 to ensure that there is no direct contact between the two and improve safety.
- the optical system 100 matches the lens parameters of the photographing device 21. In turn, the image quality is improved.
- the lens parameters of the optical system 100 include: aperture, aperture, and image plane, etc., wherein the aperture and aperture of the optical system 100 are consistent with those of the shooting device, thereby ensuring the consistency of the image quality of the overall system. sex.
- the lens parameters include an image surface, and the image surface is larger than 16 mm. Furthermore, the large image plane imaging is realized through the setting of the above-mentioned optical system itself or the cooperation with the photographing equipment. In turn, the problem of the small imaging surface of the existing imaging device is solved.
- the field of view of the photographing device 200 can be greater than 115°. This achieves a large shooting range and clear imaging.
- the diameters of the first lens 101 to the seventh lens 107 of the optical system 100 are all larger than the lens diameter of the photographing device 21.
- large image plane imaging can be realized, which in turn solves the problems that the imaging surface of the existing imaging device is small, mostly smaller than the image plane with a diameter of 16 mm, and the resolution is low and the image quality is poor.
- the photographing device in the foregoing embodiment uses the optical system provided in the embodiment of the present application, the angle of view of the photographing device can be increased, and the imaging quality of the photographing device can be improved at the same time.
- FIG. 7 is a schematic structural diagram of a movable platform provided by an embodiment of the present application.
- the movable platform is equipped with a shooting device to realize shooting.
- the movable platform 300 includes a platform body 310 and a photographing device 200.
- the photographing device 200 is installed on the platform body 310.
- the photographing device 200 includes an optical system 100 and a photographing device 21.
- the optical system 100 is connected to the photographing device 21.
- the optical system 100 adopts any optical system provided in the above-mentioned embodiments.
- the movable platform 300 includes an aircraft, a robot, or a handheld pan/tilt.
- the aircraft includes drones, which include rotary-wing drones, such as four-rotor drones, hexa-rotor drones, and octo-rotor drones. It can also be a fixed-wing drone or It is a combination of rotary-wing and fixed-wing drones, and is not limited here.
- rotary-wing drones such as four-rotor drones, hexa-rotor drones, and octo-rotor drones. It can also be a fixed-wing drone or It is a combination of rotary-wing and fixed-wing drones, and is not limited here.
- the robot can also be called an educational robot. It uses a Mecanum wheel omnidirectional chassis and is equipped with multiple pieces of intelligent armor. Each intelligent armor has a built-in impact detection module that can quickly detect physical strikes. At the same time, it also includes a two-axis pan/tilt, which can be flexibly rotated, matched with the transmitter to accurately, stably and continuously fire crystal bombs or infrared beams, and matched with ballistic light effects, giving users a more realistic shooting experience.
- the optical system can increase the angle of view of the lens, and then can shoot a larger range of scenes, while improving the imaging quality of the shooting device, and the combination of multiple lenses makes it relatively
- the distance is small, thereby reducing the volume of the optical system, achieving miniaturization and portability. Therefore, when the drone is used for aerial photography, better images can be taken by using the optical system, thereby improving the user experience.
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Abstract
An optical system, a photography device, and a movable platform. The optical system comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially arranged from an object side to an image side. The first lens, the second lens, the fifth lens, and the seventh lens have negative focal power. The third lens, the fourth lens, and the sixth lens have positive focal power. The optical system satisfies the following expressions: 1.5<|f1/f|<2.5, 4<|(f2+f1)/f|<6, 1<|f3/f|<2, 1<|f4/f|<2, 0.9<|f5/f|<1.5, 0.9<|f5/f6|<1.5, 4.5<|f7/f6|<6, 4.5<|f7/f|<6, 4<|TL/f|<5, and 0.2<|BFL/TL|<0.5, wherein f is the focal length of the optical system, f1 to f7 are the focal lengths of the first lens to the seventh lens, respectively, TL is the distance on an optical axis from the center of the lens surface of the first lens close to the object side to the imaging surface, and BFL is the distance on the optical axis from the center of the lens surface of the seventh lens close to the image side to the imaging surface.
Description
本申请涉及光学技术领域,尤其涉及一种光学***、使用光学***的拍摄装置以及可移动平台。This application relates to the field of optical technology, and in particular to an optical system, a photographing device using the optical system, and a movable platform.
随着技术的发展,小型化、高像质、低成本、大视场范围拍摄的摄影镜头越来越受到人们的青睐。现有的无人机及运动相机类镜头等体积紧凑的相机大都需要超高的光学素质,且拍摄范围都要求一定的微距功能,然而现有的运动相机类镜头的像面大都小于1英寸(inch),像面较小,光圈较小;并且都是固定焦距,不具有对焦功能或者是整体镜头对焦,会导致镜头总长变化;并且不可交换,只能拍摄一定范围或者一定焦段范围的物体,对较大范围的多样化需求很难满足,因此无法满足用户的需求。With the development of technology, photographic lenses with small size, high image quality, low cost, and large field of view are becoming more and more popular. Most of the existing compact cameras such as drones and sports camera lenses require ultra-high optical quality, and the shooting range requires a certain macro function, but the image surface of the existing sports camera lenses is mostly less than 1 inch (inch), the image surface is small, the aperture is small; and they are all fixed focal lengths, do not have the focus function or the overall lens focus, will cause the total length of the lens to change; and cannot be exchanged, can only shoot objects in a certain range or a certain focal range , It is difficult to meet the diversified needs of a large range, so it can not meet the needs of users.
发明内容Summary of the invention
基于此,本申请提供了一种光学***、拍摄装置以及可移动平台,该光学***用于增加拍摄装置的视场角,同时又可以提高成像质量。Based on this, the present application provides an optical system, a photographing device, and a movable platform. The optical system is used to increase the field of view of the photographing device and at the same time improve the imaging quality.
第一方面,本申请提供了一种光学***,所述光学***包括从物侧至像侧依次设置的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜和第七透镜,所述第一透镜、第二透镜、第五透镜、第七透镜具有负光焦度,所述第三透镜、第四透镜、第六透镜具有正光焦度;In the first aspect, the present application provides an optical system including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens arranged in order from the object side to the image side And a seventh lens, the first lens, the second lens, the fifth lens, and the seventh lens have negative refractive power, and the third lens, the fourth lens, and the sixth lens have positive refractive power;
所述光学***满足以下表达式:The optical system satisfies the following expression:
1.5<|f
1/f|<2.5,4<|(f
2+f
1)/f|<6,1<|f
3/f|<2,1<|f
4/f|<2,0.9<|f
5/f|<1.5,0.9<|f
5/f
6|<1.5,4.5<|f
7/f
6|<6,4.5<|f
7/f|<6,4<|TL/f|<5,0.2<|BFL/TL|<0.5;
1.5<|f 1 /f|<2.5, 4 <|(f 2 +f 1 )/f|<6, 1<|f 3 /f|<2, 1<|f 4 /f|<2, 0.9 <| f 5 /f|<1.5,0.9<|f 5 / f 6 | <1.5,4.5 <| f 7 / f 6 | <6,4.5 <| f 7 / f | <6,4 <| TL / f|<5, 0.2<|BFL/TL|<0.5;
其中,f是所述光学***的焦距,f
1是所述第一透镜的焦距、f
2是所述第二透镜的焦距,f
3是所述第三透镜的焦距,f
4是所述第四透镜的焦距,f
5是所 述第五透镜的焦距,f
6是所述第六透镜的焦距,f
7是所述第七透镜的焦距,TL是所述第一透镜靠近物侧的透镜面中心到成像面为止的光轴上的距离;BFL是所述第七透镜靠近像侧的透镜面中心到成像面为止的光轴上的距离。
Where f is the focal length of the optical system, f 1 is the focal length of the first lens, f 2 is the focal length of the second lens, f 3 is the focal length of the third lens, and f 4 is the first lens. The focal length of the four lenses, f 5 is the focal length of the fifth lens, f 6 is the focal length of the sixth lens, f 7 is the focal length of the seventh lens, and TL is the lens near the object side of the first lens The distance on the optical axis from the surface center to the imaging surface; BFL is the distance on the optical axis from the center of the lens surface of the seventh lens near the image side to the imaging surface.
第二方面,本申请还提供了一种拍摄装置,所述拍摄装置包括光学***和拍摄设备,所述光学***连接于所述拍摄设备,所述光学***包括从物侧到像侧依次设置的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜和第七透镜,所述第一透镜、第二透镜、第五透镜、第七透镜具有负光焦度,所述第三透镜、第四透镜、第六透镜具有正光焦度;In a second aspect, the present application also provides a photographing device. The photographing device includes an optical system and a photographing device. The optical system is connected to the photographing device. The optical system includes The first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens, the first lens, the second lens, the fifth lens, and the seventh lens have negative refractive power , The third lens, the fourth lens, and the sixth lens have positive refractive power;
所述光学***满足以下表达式:The optical system satisfies the following expression:
1.5<|f
1/f|<2.5,4<|(f
2+f
1)/f|<6,1<|f
3/f|<2,1<|f
4/f|<2,0.9<|f
5/f|<1.5,0.9<|f
5/f
6|<1.5,4.5<|f
7/f
6|<6,4.5<|f
7/f|<6,4<|TL/f|<5,0.2<|BFL/TL|<0.5;
1.5<|f 1 /f|<2.5, 4 <|(f 2 +f 1 )/f|<6, 1<|f 3 /f|<2, 1<|f 4 /f|<2, 0.9 <| f 5 /f|<1.5,0.9<|f 5 / f 6 | <1.5,4.5 <| f 7 / f 6 | <6,4.5 <| f 7 / f | <6,4 <| TL / f|<5, 0.2<|BFL/TL|<0.5;
其中,f是所述光学***的焦距,f
1是所述第一透镜的焦距、f
2是所述第二透镜的焦距,f
3是所述第三透镜的焦距,f
4是所述第四透镜的焦距,f
5是所述第五透镜的焦距,f
6是所述第六透镜的焦距,f
7是所述第七透镜的焦距,TL是所述第一透镜靠近物侧的透镜面中心到成像面为止的光轴上的距离;BFL是所述第七透镜靠近像侧的透镜面中心到成像面为止的光轴上的距离。
Where f is the focal length of the optical system, f 1 is the focal length of the first lens, f 2 is the focal length of the second lens, f 3 is the focal length of the third lens, and f 4 is the first lens. The focal length of the four lenses, f 5 is the focal length of the fifth lens, f 6 is the focal length of the sixth lens, f 7 is the focal length of the seventh lens, and TL is the lens near the object side of the first lens The distance on the optical axis from the surface center to the imaging surface; BFL is the distance on the optical axis from the center of the lens surface of the seventh lens near the image side to the imaging surface.
第三方面,本申请还提供了一种可移动平台,所述可移动平台包括平台本体和拍摄装置,所述拍摄装置搭载在所述平台本体上;所述拍摄装置包括光学***和拍摄设备,所述光学***连接于所述拍摄设备,所述光学***包括从物侧到像侧依次设置的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜和第七透镜,所述第一透镜、第二透镜、第五透镜、第七透镜具有负光焦度,所述第三透镜、第四透镜、第六透镜具有正光焦度;In a third aspect, the present application also provides a movable platform. The movable platform includes a platform body and a photographing device, the photographing device is mounted on the platform body; the photographing device includes an optical system and a photographing device, The optical system is connected to the photographing device, and the optical system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a first lens, which are sequentially arranged from the object side to the image side. Seven lenses, the first lens, the second lens, the fifth lens, and the seventh lens have negative refractive power, and the third lens, the fourth lens, and the sixth lens have positive refractive power;
所述光学***满足以下表达式:The optical system satisfies the following expression:
1.5<|f
1/f|<2.5,4<|(f
2+f
1)/f|<6,1<|f
3/f|<2,1<|f
4/f|<2,0.9<|f
5/f|<1.5,0.9<|f
5/f
6|<1.5,4.5<|f
7/f
6|<6,4.5<|f
7/f|<6,4<|TL/f|<5,0.2<|BFL/TL|<0.5;
1.5<|f 1 /f|<2.5, 4 <|(f 2 +f 1 )/f|<6, 1<|f 3 /f|<2, 1<|f 4 /f|<2, 0.9 <| f 5 /f|<1.5,0.9<|f 5 / f 6 | <1.5,4.5 <| f 7 / f 6 | <6,4.5 <| f 7 / f | <6,4 <| TL / f|<5, 0.2<|BFL/TL|<0.5;
其中,f是所述光学***的焦距,f
1是所述第一透镜的焦距、f
2是所述第二透镜的焦距,f
3是所述第三透镜的焦距,f
4是所述第四透镜的焦距,f
5是所 述第五透镜的焦距,f
6是所述第六透镜的焦距,f
7是所述第七透镜的焦距,TL是所述第一透镜靠近物侧的透镜面中心到成像面为止的光轴上的距离;BFL是所述第七透镜靠近像侧的透镜面中心到成像面为止的光轴上的距离。
Where f is the focal length of the optical system, f 1 is the focal length of the first lens, f 2 is the focal length of the second lens, f 3 is the focal length of the third lens, and f 4 is the first lens. The focal length of the four lenses, f 5 is the focal length of the fifth lens, f 6 is the focal length of the sixth lens, f 7 is the focal length of the seventh lens, and TL is the lens near the object side of the first lens The distance on the optical axis from the surface center to the imaging surface; BFL is the distance on the optical axis from the center of the lens surface of the seventh lens near the image side to the imaging surface.
本申请实施例提供的光学***、拍摄装置及可移动平台,其中光学***能够以可拆卸的方式安装在拍摄装置上,且拍摄装置能够安装在可移动平台的主体上,该光学***利用七个透镜的组合及特定参数设置,增加了拍摄装置的视场角,同时又提高了拍摄装置的成像质量。The optical system, the photographing device and the movable platform provided by the embodiments of the present application, wherein the optical system can be detachably installed on the photographing device, and the photographing device can be installed on the main body of the movable platform. The optical system utilizes seven The combination of lenses and specific parameter settings increase the field of view of the shooting device, and at the same time improve the imaging quality of the shooting device.
应当理解的是,以上的一般描述和后文的细节描述仅是示例性和解释性的,并不能限制本申请。It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the application.
为了更清楚地说明本申请实施例技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图是本申请的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。In order to explain the technical solutions of the embodiments of the present application more clearly, the following will briefly introduce the drawings used in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. Ordinary technicians can obtain other drawings based on these drawings without creative work.
图1是本申请一实施例提供的一种光学***的结构示意图;FIG. 1 is a schematic structural diagram of an optical system provided by an embodiment of the present application;
图2是本申请一实施例提供的一种光学***的配置示意图;2 is a schematic diagram of the configuration of an optical system provided by an embodiment of the present application;
图3是本申请一实施例提供的另一种光学***的结构示意图;FIG. 3 is a schematic structural diagram of another optical system provided by an embodiment of the present application;
图4是本申请一实施例提供的一种光学***的结构示意图;4 is a schematic structural diagram of an optical system provided by an embodiment of the present application;
图5是本申请一实施例提供的光学***另一视角的结构示意图;FIG. 5 is a schematic structural diagram of another view angle of the optical system provided by an embodiment of the present application;
图6是本申请一实施例提供的一种拍摄装置的结构示意图;FIG. 6 is a schematic structural diagram of a photographing device provided by an embodiment of the present application;
图7是本申请一实施例提供的一种可移动平台的结构示意图。Fig. 7 is a schematic structural diagram of a movable platform provided by an embodiment of the present application.
主要元件及符号说明:Description of main components and symbols:
100、光学***;101、第一透镜;102、第二透镜;103、第三透镜、104、第四透镜;105、第五透镜;106、第六透镜;107、第七透镜;100. Optical system; 101, first lens; 102, second lens; 103, third lens, 104, fourth lens; 105, fifth lens; 106, sixth lens; 107, seventh lens;
200、拍摄装置;21、拍摄设备;210、镜片组;211、显示屏;212、拍摄按键;200. Shooting device; 21. Shooting equipment; 210. Lens group; 211. Display screen; 212. Shooting button;
300、可移动平台;310、平台本体。300. Movable platform; 310. Platform ontology.
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.
下面结合附图,对本申请的一些实施方式作详细说明。在不冲突的情况下,下述的实施例及实施例中的特征可以相互组合。Hereinafter, some embodiments of the present application will be described in detail with reference to the accompanying drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.
还应当理解,在此本申请说明书中所使用的术语仅仅是出于描述特定实施例的目的而并不意在限制本申请。如在本申请说明书和所附权利要求书中所使用的那样,除非上下文清楚地指明其它情况,否则单数形式的“一”、“一个”及“该”意在包括复数形式。It should also be understood that the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit the application. As used in the specification of this application and the appended claims, unless the context clearly indicates other circumstances, the singular forms "a", "an" and "the" are intended to include plural forms.
还应当进一步理解,在本申请说明书和所附权利要求书中使用的术语“和/或”是指相关联列出的项中的一个或多个的任何组合以及所有可能组合,并且包括这些组合。It should be further understood that the term "and/or" used in the specification and appended claims of this application refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations .
请参阅图1,图1是本申请一实施例提供的一种光学***的结构示意图。该光学***能够用于增加拍摄装置的视场角,同时又可以提高成像质量。Please refer to FIG. 1. FIG. 1 is a schematic structural diagram of an optical system provided by an embodiment of the present application. The optical system can be used to increase the angle of view of the shooting device, and at the same time can improve the imaging quality.
如图1所示,该光学***100包括从物侧至像侧依次设置的第一透镜101、第二透镜102、第三透镜103、第四透镜104、第五透镜105、第六透镜106和第七透镜107。其中,第一透镜101、第二透镜102、第五透镜105、第七透镜107具有负光焦度,第三透镜103、第四透镜104、第六透镜106具有正光焦度。As shown in Figure 1, the optical system 100 includes a first lens 101, a second lens 102, a third lens 103, a fourth lens 104, a fifth lens 105, a sixth lens 106 and The seventh lens 107. Among them, the first lens 101, the second lens 102, the fifth lens 105, and the seventh lens 107 have negative refractive power, and the third lens 103, the fourth lens 104, and the sixth lens 106 have positive refractive power.
其中,光学***100还满足以下表达式:Among them, the optical system 100 also satisfies the following expression:
1.5<|f
1/f|<2.5,4<|(f
2+f
1)/f|<6,1<|f
3/f|<2,1<|f
4/f|<2,0.9<|f
5/f|<1.5,0.9<|f
5/f
6|<1.5,4.5<|f
7/f
6|<6,4.5<|f
7/f|<6,4<|TL/f|<5,0.2<|BFL/TL|<0.5 (1)
1.5<|f 1 /f|<2.5, 4 <|(f 2 +f 1 )/f|<6, 1<|f 3 /f|<2, 1<|f 4 /f|<2, 0.9 <| f 5 /f|<1.5,0.9<|f 5 / f 6 | <1.5,4.5 <| f 7 / f 6 | <6,4.5 <| f 7 / f | <6,4 <| TL / f|<5, 0.2<|BFL/TL|<0.5 (1)
在表达式(1)中,f是光学***100的焦距,f
1是第一透镜101的焦距、f
2是第二透镜102的焦距,f
3是第三透镜103的焦距,f
4是第四透镜104的焦距,f
5是第五透镜105的焦距,f
6是第六透镜106的焦距,f
7是第七透镜107的焦距,TL是第一透镜101靠近物侧的透镜面中心到成像面I为止的光轴上的 距离;BFL是第七透镜107靠近像侧的透镜面中心到成像面I为止的光轴上的距离。
In Expression (1), f is the focal length of optical system 100, f 1 is the focal length of the first lens 101, f 2 is the focal length of the second lens 102, f is the focal length of the third lens. 3 103, f. 4 are The focal length of the four lens 104, f 5 is the focal length of the fifth lens 105, f 6 is the focal length of the sixth lens 106, f 7 is the focal length of the seventh lens 107, and TL is the lens surface center of the first lens 101 near the object side. The distance on the optical axis from the imaging surface I; BFL is the distance from the center of the lens surface of the seventh lens 107 on the image side to the imaging surface I on the optical axis.
需要说明的是,4.5<|TL/f|<5的限定,有助于缩短该光学***100的整体长度,0.2<|BFL/TL|<0.5的限定,有助于提升该光学***100后焦长度,由于后焦长度较长,使得图像传感器距离光学***的镜面距离较远。因此灰尘在像面的成像比较弱,进而防止灰尘对成像面的影响。It should be noted that the limit of 4.5<|TL/f|<5 helps to shorten the overall length of the optical system 100, and the limit of 0.2<|BFL/TL|<0.5 helps to improve the optical system 100 The focal length, because the back focal length is longer, the image sensor is farther away from the mirror of the optical system. Therefore, the image of dust on the image surface is relatively weak, thereby preventing the influence of dust on the image surface.
其中,该光学***100的孔径光阑S位于第三透镜103和第四透镜104之间。在一些实施例中,光学***100的孔径光阑S所处位置的间隔大于4mm,其中,所处位置的间隔为与孔径光阑S相邻的两个透镜之间的距离,具体为第三透镜103和第四透镜104的间隔距离。孔径光阑S可以用可变光圈实现,所处位置的间隔大于4mm,有利于设置可变光圈,即方便可变光圈的机械结构实现,进而方便光学***光阑的设计。Wherein, the aperture stop S of the optical system 100 is located between the third lens 103 and the fourth lens 104. In some embodiments, the distance between the positions of the aperture stop S of the optical system 100 is greater than 4 mm, where the distance between the positions is the distance between two lenses adjacent to the aperture stop S, specifically the third The distance between the lens 103 and the fourth lens 104. The aperture stop S can be realized with a variable diaphragm, and the position interval is greater than 4mm, which is beneficial to set the variable diaphragm, that is, it facilitates the realization of the mechanical structure of the variable diaphragm, thereby facilitating the design of the optical system diaphragm.
上述实施例提供的光学***通过七个透镜的组合,可增加该光学***的视场角,同时该光学***的结构紧凑,采用了将孔径光阑S的位置尽可能靠近物侧面设计,使得光学***的总长缩短,即该光学***的整个内对焦光学***总长度(第一透镜101物侧面顶点到成像面I的距离)小于29mm,整个透镜***(第一透镜101物侧面的顶点到第七透镜107像侧面顶点距离)小于23mm,因此实现了该光学***的小型化、轻量化和便携化。Through the combination of seven lenses, the optical system provided by the above-mentioned embodiments can increase the field of view of the optical system. At the same time, the optical system has a compact structure. The total length of the system is shortened, that is, the total length of the entire internal focusing optical system of the optical system (the distance from the vertex of the object side of the first lens 101 to the imaging surface I) is less than 29mm, and the entire lens system (the vertex of the object side of the first lens 101 to the seventh The apex distance of the image side of the lens 107 is less than 23 mm, so that the optical system can be miniaturized, lightened, and portable.
在一些实施例中,为了进一步地减小光学***的重量,实现光学***的轻量化和便携化,该光学***100中至少包括一个塑胶材质的透镜。当然,该光学***100的七个透镜中也可至少包括一个玻璃材质的透镜。In some embodiments, in order to further reduce the weight of the optical system and realize the lightweight and portability of the optical system, the optical system 100 includes at least one lens made of plastic material. Of course, the seven lenses of the optical system 100 may also include at least one lens made of glass.
示例性的,比如第二透镜102采用塑胶材质,其他几个透镜采用玻璃等常用材质;再或者,比如第二透镜102采用玻璃材质,其他几个透镜采用塑胶等常用材质。Exemplarily, for example, the second lens 102 is made of plastic material, and several other lenses are made of common materials such as glass; or, for example, the second lens 102 is made of glass material, and the other lenses are made of common materials such as plastic.
在一些实施例中,为了进一步地减小光学***的体积和重量的同时保证成像质量,第二透镜102、第五透镜105、第七透镜107中至少有一个是塑胶材质的透镜。In some embodiments, in order to further reduce the volume and weight of the optical system while ensuring imaging quality, at least one of the second lens 102, the fifth lens 105, and the seventh lens 107 is a lens made of plastic.
示例性的,还可在光学***100中第一透镜101和第七透镜107采用玻璃材质,第二透镜102、第三透镜103、第四透镜104、第五透镜105和第六透镜106采用塑胶材质,不仅可以减小光学***的重量,还可以防止光学***的透 镜产生刮痕。Exemplarily, in the optical system 100, the first lens 101 and the seventh lens 107 may be made of glass, and the second lens 102, the third lens 103, the fourth lens 104, the fifth lens 105, and the sixth lens 106 may be made of plastic. The material can not only reduce the weight of the optical system, but also prevent the lens of the optical system from scratching.
在一些实施例中,为了提高光学***的成像质量,该光学***100中至少有一个透镜是非球面透镜。其中,非球面透镜是指透镜的两个透镜面中至少有一个为非球面。In some embodiments, in order to improve the imaging quality of the optical system, at least one lens in the optical system 100 is an aspheric lens. Among them, an aspheric lens means that at least one of the two lens surfaces of the lens is aspheric.
特别地,在第二透镜102、第五透镜105、第六透镜106和第七透镜107中至少有一个透镜的两个透镜面中至少有一个是非球面。可以有效矫正视场角过大带来的畸变和色差,并且还可以提高光学***的整体解像力和实现镜头的小型化。In particular, at least one of the two lens surfaces of at least one of the second lens 102, the fifth lens 105, the sixth lens 106, and the seventh lens 107 is aspherical. It can effectively correct the distortion and chromatic aberration caused by an excessively large field of view, and can also improve the overall resolution of the optical system and realize the miniaturization of the lens.
示例性的,第二透镜102、第五透镜105、第六透镜106和第七透镜107中至少有一个透镜的两个透镜面中至少有一个是非球面,当然也可以是两个透镜面均为非球面。Exemplarily, at least one of the two lens surfaces of at least one of the second lens 102, the fifth lens 105, the sixth lens 106, and the seventh lens 107 is aspherical. Of course, both lens surfaces may be Aspherical.
具体地,如图2所示,第二透镜102的透镜面3和透镜面4中至少有一个镜面是非球面;和/或,第五透镜105的透镜面10和透镜面11中至少有一个镜面是非球面;和/或,第六透镜106的的透镜面12和透镜面13中至少有一个镜面是非球面;和/或,第七透镜107的的透镜面14和透镜面15中至少有一个镜面是非球面。当然,也可以均为非球面。Specifically, as shown in FIG. 2, at least one of the lens surface 3 and the lens surface 4 of the second lens 102 is aspherical; and/or, at least one of the lens surface 10 and the lens surface 11 of the fifth lens 105 is a mirror surface Is an aspherical surface; and/or, at least one of the lens surface 12 and the lens surface 13 of the sixth lens 106 is aspherical; and/or, at least one of the lens surface 14 and the lens surface 15 of the seventh lens 107 has a mirror surface It is aspherical. Of course, all of them may be aspherical.
特别地,在第二透镜102、第五透镜105、第六透镜106和第七透镜107中每个透镜的两个透镜面中至少有一个是非球面。可以更为有效地矫正视场角过大带来的畸变和色差,并且还可以提高光学***的整体解像力和实现镜头的小型化。In particular, at least one of the two lens surfaces of each of the second lens 102, the fifth lens 105, the sixth lens 106, and the seventh lens 107 is aspherical. It can more effectively correct the distortion and chromatic aberration caused by an excessively large field of view, and can also improve the overall resolution of the optical system and realize the miniaturization of the lens.
具体地,如图2所示,第二透镜102的透镜面3和透镜面4中至少有一个镜面是非球面;且第五透镜105的透镜面10和透镜面11中至少有一个镜面是非球面;且第六透镜106的的透镜面12和透镜面13中至少有一个镜面是非球面;且第七透镜107的的透镜面14和透镜面15中至少有一个镜面是非球面。当然,也可以均为非球面。Specifically, as shown in FIG. 2, at least one of the lens surface 3 and the lens surface 4 of the second lens 102 is aspherical; and at least one of the lens surface 10 and the lens surface 11 of the fifth lens 105 is aspherical; At least one of the lens surface 12 and the lens surface 13 of the sixth lens 106 is aspherical; and at least one of the lens surface 14 and the lens surface 15 of the seventh lens 107 is aspherical. Of course, all of them may be aspherical.
在一些实施例中,第七透镜107靠近像侧的透镜面的中心顶点到成像面I的间隔大于预设距离。通过该预设距离的设定,比如将该预设距离设置为5.6mm,可以确保光学***在使用时的安全性,同时又有助于减少灰尘对成像质量的影响,以及预留空间有助于可交换镜头的机械结构的实现。In some embodiments, the distance from the center vertex of the lens surface of the seventh lens 107 close to the image side to the imaging surface I is greater than a preset distance. Through the setting of the preset distance, such as setting the preset distance to 5.6mm, the safety of the optical system during use can be ensured, and at the same time, it can help reduce the impact of dust on the image quality and reserve space. For the realization of the mechanical structure of interchangeable lenses.
在一些实施例中,光学***100的第二透镜102至第七透镜107中至少有 一个透镜能够作为内对焦透镜组,当然也可以是两个透镜组合作为内对焦透镜组。由此可以实现从无穷远物体(或最近距离物体)向最近距离物体(或无穷远物体)的对焦,特别是在0.3m至无穷远范围内的不同物距的拍摄效果较好,由此解决了现有的镜头只能拍摄一定范围或者一定焦段范围的物体的问题。In some embodiments, at least one of the second lens 102 to the seventh lens 107 of the optical system 100 can be used as an internal focusing lens group, of course, two lenses can also be combined as an internal focusing lens group. Thus, the focus can be realized from the object at infinity (or the object at the closest distance) to the object at the closest distance (or the object at infinity), especially the shooting effect is better at different object distances in the range of 0.3m to infinity. This solves the problem that the existing lens can only shoot objects in a certain range or a certain focal range.
在光学***100的第二透镜102至第七透镜107中至少有一个透镜能够作为内对焦透镜组,可以很好地控制对焦透镜在移动过程中引起的像差,进而提升了整体光学***100的光学像质。At least one of the second lens 102 to the seventh lens 107 of the optical system 100 can be used as an inner focusing lens group, which can well control the aberration caused by the focusing lens during the movement process, thereby improving the overall optical system 100 Optical image quality.
其中,通过对焦结构设计,还需保证在内对焦时对焦透镜与相邻透镜的间隔均至少大于1.1mm。可以有效避免了用于对焦镜片的前后机械结构件的碰撞,确保了光学***的安全。Among them, through the design of the focusing structure, it is also necessary to ensure that the distance between the focusing lens and the adjacent lens during internal focusing is at least greater than 1.1 mm. It can effectively avoid the collision of the front and rear mechanical structures used for the focusing lens, and ensure the safety of the optical system.
示例性的,比如,将第四透镜104作为内对焦透镜组,在内对焦时第四透镜104与相邻透镜(第三透镜103和第四透镜105)的间隔均至少大于1.1mm。Exemplarily, for example, the fourth lens 104 is used as the inner focusing lens group, and the interval between the fourth lens 104 and the adjacent lenses (the third lens 103 and the fourth lens 105) during internal focusing is at least greater than 1.1 mm.
在一些实施例中,在光学***100的第二透镜102至第七透镜107中至少有一个透镜能够作为内对焦透镜组时,内对焦透镜组对应的调整量小于0.5mm,同时可使得光学***的呼吸效应较小,可以实现画面视场变化小于0.5°,进而提高成像画质。其次,在内对焦时,还可以控制对焦群重量小于0.2g,因此提高了对焦速度,并且在近距离对焦拍摄时能够获得良好的性能。再次,还可以保证光学***100的视场角大于115°,进而提高拍摄装置的视场角,使得拍摄视场画面更大。In some embodiments, when at least one of the second lens 102 to the seventh lens 107 of the optical system 100 can be used as the inner focusing lens group, the adjustment amount corresponding to the inner focusing lens group is less than 0.5 mm, and the optical system The breathing effect is small, and the change in the field of view of the picture is less than 0.5°, thereby improving the image quality. Secondly, during internal focusing, the focus group weight can also be controlled to be less than 0.2g, so the focusing speed is improved, and good performance can be obtained when focusing at close range. Thirdly, it can also be ensured that the field of view of the optical system 100 is greater than 115°, thereby increasing the field of view of the shooting device, so that the shooting field of view is larger.
在一些实施例中,为了矫正光学***的色差,以提高成像质量,该光学***100满足如下表达式:In some embodiments, in order to correct the chromatic aberration of the optical system and improve the imaging quality, the optical system 100 satisfies the following expression:
(vd
1,vd
4,vd
6)>40,0<(vd
2,vd
3,vd
5,vd
7)<40 (2)
(vd 1 ,vd 4 ,vd 6 )>40,0<(vd 2 ,vd 3 ,vd 5 ,vd 7 )<40 (2)
在表达式(2)中,vd
1、vd
2、vd
3、vd
4、vd
5、vd
6、vd
7分别是第一透镜101、第二透镜102、第三透镜103、第四透镜104、第五透镜105、第六透镜106、第七透镜107的色散系数。
In expression (2), vd 1 , vd 2 , vd 3 , vd 4 , vd 5 , vd 6 , and vd 7 are the first lens 101, the second lens 102, the third lens 103, the fourth lens 104, Dispersion coefficients of the fifth lens 105, the sixth lens 106, and the seventh lens 107.
特别地,在光学***100中第二透镜102、第五透镜105、第六透镜106和第七透镜107满足如下表达式:0<(vd
2,vd
5,vd
7)<30,vd
6>75。可以使得光学***的色像差得到较好矫正,即可以更为有效地降低光学***的色像差,以提高光学***的成像质量。
In particular, the second lens 102, the fifth lens 105, the sixth lens 106, and the seventh lens 107 in the optical system 100 satisfy the following expression: 0<(vd 2 ,vd 5 ,vd 7 )<30,vd 6 > 75. The chromatic aberration of the optical system can be better corrected, that is, the chromatic aberration of the optical system can be reduced more effectively to improve the imaging quality of the optical system.
在一些实施例中,为了矫正光学***的色差,以提高成像质量,该光学系 统100满足如下表达式:In some embodiments, in order to correct the chromatic aberration of the optical system and improve the imaging quality, the optical system 100 satisfies the following expression:
1.7<(nd
1,nd
3,nd
4)<2,1.4<(nd
2,nd
5,nd
6,nd
7)<1.7 (3)
1.7<(nd 1 ,nd 3 ,nd 4 )<2,1.4<(nd 2 ,nd 5 ,nd 6 ,nd 7 )<1.7 (3)
在表达式(3)中,nd
1、nd
2、nd
3、nd
4、nd
5、nd
6、nd
7分别是第一透镜101、第二透镜102、第三透镜103、第四透镜104、第五透镜105、第六透镜106、第七透镜107的折射率。
In expression (3), nd 1 , nd 2 , nd 3 , nd 4 , nd 5 , nd 6 , and nd 7 are the first lens 101, the second lens 102, the third lens 103, the fourth lens 104, The refractive indices of the fifth lens 105, the sixth lens 106, and the seventh lens 107.
特别地,在光学***100中第三透镜103、第六透镜106满足如下表达式:nd
3>1.85,nd
6<1.55。可以更为有效地降低光学***的色像差,以提高光学***的成像质量。
In particular, the third lens 103 and the sixth lens 106 in the optical system 100 satisfy the following expressions: nd 3 >1.85 and nd 6 <1.55. The chromatic aberration of the optical system can be reduced more effectively to improve the imaging quality of the optical system.
可以理解的是,该光学***100可以同时满足表达式(2)和表达式(3),可以进一步地提高光学***的成像质量。特别地,满足如下表达式:0<(vd
2,vd
5,vd
7)<30,vd
6>75,nd
3>1.85,nd
6<1.55,可以矫正光学***的色像差,以提高光学***的成像质量。
It can be understood that the optical system 100 can satisfy expression (2) and expression (3) at the same time, and the imaging quality of the optical system can be further improved. In particular, the following expressions are satisfied: 0<(vd 2 ,vd 5 ,vd 7 )<30, vd 6 >75, nd 3 >1.85, nd 6 <1.55, the chromatic aberration of the optical system can be corrected to improve the optical The imaging quality of the system.
为了进一步地提高光学***的成像质量,该光学***100中的第一透镜101满足如下表达式:In order to further improve the imaging quality of the optical system, the first lens 101 in the optical system 100 satisfies the following expression:
0.4<|D
1/R
1|<1,2<|D
1/R
2|<3.6 (4)
0.4<|D 1 /R 1 |<1, 2<|D 1 /R 2 |<3.6 (4)
在表达式(4)中,D
1是第一透镜101的直径,R
1是第一透镜101靠近物侧的透镜面的曲率半径,R
2是第一透镜101靠近像侧的透镜面的曲率半径。通过表达式(4)的限定,有助于矫正光学***的畸变,减少因透镜像侧面太凹产生的鬼影,也有助于提升边缘视场的解像力,进而提高光学***的成像质量。
In the expression (4), D 1 is the diameter of the first lens 101, R 1 is the curvature radius of the lens surface of the first lens 101 close to the object side, and R 2 is the curvature of the lens surface of the first lens 101 close to the image side radius. Through the limitation of expression (4), it helps to correct the distortion of the optical system, reduce the ghost image caused by the side surface of the lens is too concave, and also help to improve the resolution of the edge field of view, thereby improving the imaging quality of the optical system.
在一些实施例中,为了使光学***小型化和轻便化,对光学***进行进一步限定,即光学***100满足如下表达式:In some embodiments, in order to miniaturize and lighten the optical system, the optical system is further limited, that is, the optical system 100 satisfies the following expression:
0.75<|T
1/T
2|<1.25,0.02<|T
2/TL|<0.055,0.04<|T
3/TL|<0.07,0.05<|(T
3+T
4)/TL|<0.15,1<|T
3/T
4|<2,0.01<|T
5/TL|<0.03,0.02<|(T
6+T
7)/TL|<0.15,3.5<|T
6/T
7|<4.5,0.1<|A
1/TL|<0.25,0.12<|(A
1+A
2)/TL|<0.25,0.125<|A
3/TL|<0.2,0.02<|A
4/TL|<0.04,0.25<|(A
4+A
5)/TL|<0.4,0.035<|A
6/TL|<0.06; (5)
0.75<|T 1 /T 2 |<1.25, 0.02<|T 2 /TL|<0.055, 0.04<|T 3 /TL|<0.07, 0.05<|(T 3 +T 4 )/TL|<0.15, 1<|T 3 /T 4 |<2, 0.01<|T 5 /TL|<0.03, 0.02<|(T 6 +T 7 )/TL|<0.15, 3.5 <|T 6 /T 7 |<4.5 , 0.1 <| A 1 /TL|<0.25,0.12<|(A 1 + A 2) / TL | <0.25,0.125 <| A 3 /TL|<0.2,0.02<|A 4 /TL|<0.04, 0.25<|(A 4 +A 5 )/TL|<0.4, 0.035<|A 6 /TL|<0.06; (5)
在表达式(5),TL是第一透镜101靠近物侧的透镜面中心顶点到成像面为止的光轴上的距离,T
1至T
7分别是第一透镜101、第二透镜102、第三透镜103、第四透镜104、第五透镜105、第六透镜106、第七透镜107的中心厚度;A
1是第一透镜101与第二透镜102之间的间隔,A
2是第二透镜102与第三透镜103之间的间隔,A
3是第三透镜103与第四透镜104之间的间隔,A
4是第四透 镜104与第五透镜105之间的间隔,A
5是第五透镜105与第六透镜106之间的间隔,A
6是第六透镜106与第七透镜107之间的间隔。
In the expression (5), TL is the distance on the optical axis from the center vertex of the lens surface of the first lens 101 close to the object side to the imaging surface, and T 1 to T 7 are the first lens 101, the second lens 102, and the first lens 101, respectively. The center thickness of the three lenses 103, the fourth lens 104, the fifth lens 105, the sixth lens 106, and the seventh lens 107; A 1 is the interval between the first lens 101 and the second lens 102, and A 2 is the second lens The interval between 102 and the third lens 103, A 3 is the interval between the third lens 103 and the fourth lens 104, A 4 is the interval between the fourth lens 104 and the fifth lens 105, A 5 is the fifth lens The interval between the lens 105 and the sixth lens 106, A 6 is the interval between the sixth lens 106 and the seventh lens 107.
特别地,0.125<|A
3/TL|<0.2的限定,有助于光学***可变光圈的机械结构的实现;0.035<|A
6/TL|<0.06的限定,有助于内对焦***群机械结构的实现,进而方便光学***的结构设计。
In particular, the limitation of 0.125<|A 3 /TL|<0.2 helps to realize the mechanical structure of the iris diaphragm of the optical system; the limitation of 0.035<|A 6 /TL|<0.06 helps the group of internal focusing systems The realization of the mechanical structure facilitates the structural design of the optical system.
在一些实施例中,如图3所示,该光学***还可包括红外透镜(IR透镜)108,该红外透镜108设置在第七透镜107和成像面I之间,具体地可以靠近成像面I设置。由此使得该光学***可以应用于红外成像。In some embodiments, as shown in FIG. 3, the optical system may further include an infrared lens (IR lens) 108, which is disposed between the seventh lens 107 and the imaging surface I, specifically, it may be close to the imaging surface I. set up. As a result, the optical system can be applied to infrared imaging.
在一个实施例中,为了进一步地矫正,上述的非球面透镜的两个镜面或者非球面的透镜面均是高次非球面,采用所述高次非球面满足以下表达式:In one embodiment, for further correction, the two mirror surfaces or aspheric lens surfaces of the aforementioned aspheric lens are both high-order aspheric surfaces, and the high-order aspheric surface is adopted to satisfy the following expression:
在表达式(6)中,z为非球面旋转对称轴,c为顶点曲率;
y为径向坐标,其单位和透镜单位长度相同;k为二次曲线常数,a
1至a
8分别表示各径向坐标所对应的系数。
In the expression (6), z is the aspheric rotational symmetry axis, c is the curvature of the vertex; y is the radial coordinate, and its unit is the same as the unit length of the lens; k is the conic constant, and a 1 to a 8 represent each The coefficient corresponding to the radial coordinate.
以下结合附图以及表,给出光学***的具体数值配置,如图2所示,面数1、2、...、15表示光学***中的表面标号,分别表示第一透镜101、第二透镜102、...、第七透镜107的镜面。The specific numerical configuration of the optical system is given below in conjunction with the drawings and tables. As shown in Figure 2, the surface numbers 1, 2,..., 15 represent the surface numbers in the optical system, and represent the first lens 101 and the second lens 101, respectively. Lens 102,..., the mirror surface of the seventh lens 107.
具体地,如图2所示,第一透镜101的两个透镜面分别为表面1和表面2、第二透镜102的两个透镜面分别为表面3和表面4、第三透镜103的两个透镜面分别为表面5和表面6、孔径光阑S为表面7、第四透镜104的两个透镜面分别为表面8和表面9、第五透镜105的两个透镜面分别为表面10和表面11、第六透镜106的两个透镜面分别为表面12和表面13、第七透镜107的两个透镜面分别为表面14和表面15。Specifically, as shown in FIG. 2, the two lens surfaces of the first lens 101 are surface 1 and surface 2, and the two lens surfaces of the second lens 102 are surface 3 and surface 4, and the two lens surfaces of the third lens 103 respectively. The lens surfaces are surface 5 and surface 6, the aperture stop S is surface 7, the two lens surfaces of the fourth lens 104 are surface 8 and surface 9, and the two lens surfaces of the fifth lens 105 are surface 10 and surface respectively. 11. The two lens surfaces of the sixth lens 106 are surface 12 and surface 13, respectively, and the two lens surfaces of the seventh lens 107 are surface 14 and surface 15 respectively.
在表1至表3中,曲率半径表示透镜表面弯曲的程度,可以用R表示,R值越小,镜片表面越弯;间隔或厚度(Thickness),间隔表示为光学***的透镜之间在光轴上的间隔距离,厚度为透镜的中心厚度;Nd表示透镜的折射率;Vd表示透镜的色散系数,也称为阿贝系数;“Infinity”表示平面;“Air”表示空气;“A(13)”表示第13表面的间隔,“A(15)”表示第15表面的间隔, 以A(15)为例,具体表示第七透镜107前后的空气间隔,该第七透镜107作为内对焦透镜,在不同的物距(无限远和最近)时,对焦量是不同的,因此第13面和第15面的空气间隔数值是不同的。k为二次曲线常数,a
1至a
8分别表示各径向坐标所对应的系数。表3表示从无限远物距到最近距离对焦时对应的焦距、像方F数(光阑F数)、视场角(FOV)以及内对焦组的移动变化量的数据,内对焦组的移动变化量即为AC(13)和AC(15)。
In Tables 1 to 3, the radius of curvature represents the degree of curvature of the lens surface, which can be represented by R. The smaller the value of R, the more curved the lens surface; the interval or thickness (Thickness), the interval is expressed as the distance between the lenses of the optical system. The separation distance on the axis, the thickness is the center thickness of the lens; Nd represents the refractive index of the lens; Vd represents the dispersion coefficient of the lens, also known as the Abbe coefficient; “Infinity” represents the plane; “Air” represents the air; “A(13 )” represents the distance between the 13th surface, and “A(15)” represents the distance between the 15th surface. Taking A(15) as an example, it specifically represents the air gap before and after the seventh lens 107, which serves as the inner focusing lens. , At different object distances (infinity and closest), the focusing amount is different, so the air gap value of the 13th surface and the 15th surface are different. k is a conic constant, and a 1 to a 8 respectively represent the coefficients corresponding to each radial coordinate. Table 3 shows the corresponding focal length, image-side F number (aperture F number), field of view (FOV), and the amount of change in the movement of the inner focus group when focusing from the infinite object distance to the closest distance. The movement of the inner focus group The amount of change is AC(13) and AC(15).
表1为光学***各个表面参数数据Table 1 shows the surface parameter data of the optical system
表2为光学***各个表面非球面系数数据Table 2 shows the aspheric coefficient data of each surface of the optical system
表3为光学***透镜组配置数据Table 3 shows the configuration data of the optical system lens group
To | 无限远Infinity | 最近recent |
focal lengthfocal length | 6.22mm6.22mm | To |
FNOFNO | 2.472.47 | 2.492.49 |
FOVFOV | 117.2°117.2° | 117.4°117.4° |
AC(13)AC(13) | 1.1921.192 | 1.3671.367 |
AC(15)AC(15) | 5.8635.863 | 5.6885.688 |
同时,通过上述实施例的光学***,可以看出本申请提供的光学***具有以下优点:At the same time, through the optical system of the foregoing embodiment, it can be seen that the optical system provided by the present application has the following advantages:
(1)、本申请提供的光学***结构紧凑,采用了将光阑位置尽可能靠近物侧面的结构,使得光学***的总长缩短,即整个内对焦光学***总长度(第一透镜101靠近物侧的透镜面顶点到成像面的距离)小于29mm,整个光学***的透镜***(第一透镜101靠近物侧的透镜面顶点到第七透镜107靠近像侧面的透镜面顶点距离)小于23mm,因此实现了光学***的小型、轻量化和便携化;(1) The optical system provided by the present application has a compact structure and adopts a structure that positions the diaphragm as close to the object side as possible, so that the total length of the optical system is shortened, that is, the total length of the entire inner focusing optical system (the first lens 101 is close to the object side). The distance from the apex of the lens surface to the imaging surface) is less than 29mm, and the lens system of the entire optical system (the distance from the apex of the first lens 101 near the object side to the apex of the seventh lens 107 near the image side) is less than 23mm. Improved the miniaturization, light weight and portability of the optical system;
(2)、本申请提供的光学***的孔径光阑S位置处的空气间隔大于4mm,有助于可变光圈机械结构的实现;(2) The air gap at the position of the aperture stop S of the optical system provided by this application is greater than 4mm, which helps to realize the mechanical structure of the iris diaphragm;
(3)、本申请提供的光学***第七透镜靠近像侧面的透镜面的中心顶点到成像面的空气间隔大于5.6mm,有助于减少灰尘对成像质量的影响,同时又有助于可交换镜头机械结构的实现;(3) The air distance between the center vertex of the lens surface of the seventh lens near the image side and the imaging surface of the seventh lens of the optical system provided by this application is greater than 5.6mm, which helps to reduce the influence of dust on the imaging quality, and at the same time facilitates interchangeability. Realization of the mechanical structure of the lens;
(4)、本申请提供的光学***采用其中的某一单片透镜或者两片胶合透镜进行内对焦作为对焦方式,使得***整体对焦重量较轻(对焦群重量小于0.2g),对焦速度较快,并且在近距离对焦拍摄时也能获得良好的性能;(4) The optical system provided by this application uses a single lens or two cemented lenses for internal focusing as the focusing method, so that the overall focusing weight of the system is lighter (the focusing group weight is less than 0.2g) and the focusing speed is faster , And good performance can also be obtained when shooting at close range;
(5)、本申请提供的光学***对焦量较小,整体对焦量小于0.5mm,使得***的呼吸效应较小(画面视场变化小于1°);(5) The focusing amount of the optical system provided by this application is small, and the overall focusing amount is less than 0.5mm, so that the breathing effect of the system is small (the change in the field of view of the picture is less than 1°);
(6)、本申请提供的光学***可实现***拍摄范围大,成像清晰,可实现0.3m至无穷远不同物距的拍摄;在设计时提升了周边光亮比;即使在光圈全开的时候,周边光亮比也在30%以上,通过整个镜头的光在画面上呈现得更均匀, 有效地避免了镜头有暗角的问题;FOV大于115°,拍摄视场画面大;(6) The optical system provided in this application can achieve a wide range of system shooting, clear imaging, and can achieve shooting at different object distances from 0.3m to infinity; the peripheral brightness ratio is improved during design; even when the aperture is fully opened, The peripheral brightness ratio is also more than 30%, and the light passing through the entire lens appears more evenly on the screen, effectively avoiding the problem of lens vignetting; FOV is greater than 115°, and the shooting field of view is larger;
(7)、本申请提供的光学***,通过玻璃和塑胶非球面镜片组合,可实现大像面(φ16mm)、高像质、高分辨率大于20M(2000万像素)的成像效果。(7) The optical system provided by this application, through the combination of glass and plastic aspherical lenses, can achieve an imaging effect with a large image area (φ16mm), high image quality, and high resolution greater than 20M (20 million pixels).
需要说明的是,如图4所示,本申请的光学***100还包括壳体110,其中第一透镜101、第二透镜102、第三透镜103、第四透镜104、第五透镜105、第六透镜106和第七透镜107均安装在壳体110内。其中,还包括调节机构,用于实现内对焦。It should be noted that, as shown in FIG. 4, the optical system 100 of the present application further includes a housing 110, in which a first lens 101, a second lens 102, a third lens 103, a fourth lens 104, a fifth lens 105, and a Both the six lens 106 and the seventh lens 107 are installed in the housing 110. Among them, it also includes an adjustment mechanism for achieving internal focusing.
此外,如图5所示,光学***100的壳体110上还可以有螺纹孔111,通过该螺纹孔111可以将光学***100固定在拍摄装置的镜头上,进而实现了光学***的可交换。In addition, as shown in FIG. 5, the housing 110 of the optical system 100 may also have a threaded hole 111 through which the optical system 100 can be fixed to the lens of the shooting device, thereby realizing the interchangeability of the optical system.
请参阅图6,图6是本申请的实施例提供的一种拍摄装置的结构示意图。该拍摄装置使用可交换的光学***以增加视场角,用于实现大像面以及高像质的成像效果。Please refer to FIG. 6. FIG. 6 is a schematic structural diagram of a photographing device provided by an embodiment of the present application. The camera uses an interchangeable optical system to increase the angle of view to achieve a large image surface and high-quality imaging effects.
如图6所示,拍摄装置200包括光学***100和拍摄设备21,光学***100采用上述实施例提供的任意一种光学***。As shown in FIG. 6, the photographing apparatus 200 includes an optical system 100 and a photographing device 21, and the optical system 100 adopts any optical system provided in the above-mentioned embodiments.
拍摄装置200为可以进行拍摄的电子设备,包括手机、数码相机、运动相机、可穿戴设备或手持云台相机等。The photographing device 200 is an electronic device capable of photographing, including a mobile phone, a digital camera, a sports camera, a wearable device, or a handheld pan-tilt camera.
其中,光学***100和拍摄设备21可拆卸连接,或者固定连接。可拆卸连接方便用户使用。Wherein, the optical system 100 and the photographing device 21 are detachably connected or fixedly connected. The detachable connection is convenient for users to use.
示例性的,光学***100与拍摄设备21通过磁吸、粘贴、螺纹或卡扣中的一种或多种连接方式固定。Exemplarily, the optical system 100 and the photographing device 21 are fixed by one or more of magnetic attraction, pasting, screwing, or buckle.
以磁吸为例,当光学***100与拍摄设备21通过磁吸方式固定时,光学***100和拍摄设备21上通过磁铁公母对吸方式连接,具体地,可以在光学***100上安装有磁铁,而拍摄设备21的对应位置安装有可供磁铁吸合的异性磁极或金属件。反之亦然,磁铁也可安装在拍摄设备21,此时光学***10上安装有可供磁铁吸合的异性磁极或金属件。通过上述设置,可以在方便用户安装及盲操的同时,避免了频繁装卸下容易产生的接口磨损问题。Taking magnetic attraction as an example, when the optical system 100 and the photographing device 21 are fixed by magnetic attraction, the optical system 100 and the photographing device 21 are connected by a magnet male and female pair of attraction. Specifically, a magnet may be installed on the optical system 100 , And the corresponding position of the photographing device 21 is equipped with opposite magnetic poles or metal parts that can be attracted by the magnet. The reverse is also true. The magnet can also be installed on the photographing device 21. In this case, the optical system 10 is equipped with opposite magnetic poles or metal parts that can be attracted by the magnet. Through the above arrangement, the user can easily install and blindly operate, and at the same time avoid the problem of interface wear that is prone to frequent installation and removal.
如图6所示,该拍摄设备21为运动相机,包括镜片组210、显示屏211和拍摄按键212。镜片组210用于将景物成像于拍摄设备21的传感器,比如COMS传感器或CCD传感器等;显示屏211用于显示成像,显示屏211为触控显示屏; 拍摄按键212用于触发拍摄。As shown in FIG. 6, the shooting device 21 is a sports camera, and includes a lens group 210, a display screen 211 and a shooting button 212. The lens group 210 is used to image the scene on the sensor of the shooting device 21, such as a COMS sensor or a CCD sensor; the display screen 211 is used to display imaging, and the display screen 211 is a touch screen; the shooting button 212 is used to trigger shooting.
其中,拍摄设备21包括镜片组210,光学***100的第七透镜107与镜片组210的最外侧镜片保持一定距离。比如大于6mm,以在光学***与拍摄设备21连接,确保两者之间不直接接触,提高安全性。The photographing device 21 includes a lens group 210, and the seventh lens 107 of the optical system 100 is kept at a certain distance from the outermost lens of the lens group 210. For example, it is larger than 6mm to connect the optical system and the shooting device 21 to ensure that there is no direct contact between the two and improve safety.
在一个实施例中,光学***100与拍摄设备21的镜头参数相匹配。进而提高成像质量。In one embodiment, the optical system 100 matches the lens parameters of the photographing device 21. In turn, the image quality is improved.
示例性的,光学***100的镜头参数包括:孔径、光圈和像面等,其中,光学***100的孔径、光圈与拍摄设备的孔径、光圈保持一致,进而保证了整体***像面像质的一致性。Exemplarily, the lens parameters of the optical system 100 include: aperture, aperture, and image plane, etc., wherein the aperture and aperture of the optical system 100 are consistent with those of the shooting device, thereby ensuring the consistency of the image quality of the overall system. sex.
在一个实施例中,所述镜头参数包括像面,且像面大于16mm。进而通过上述光学***自身的设置或其与拍摄设备的配合实现了大像面成像。进而解决了现有拍摄装置的成像面小的问题。In an embodiment, the lens parameters include an image surface, and the image surface is larger than 16 mm. Furthermore, the large image plane imaging is realized through the setting of the above-mentioned optical system itself or the cooperation with the photographing equipment. In turn, the problem of the small imaging surface of the existing imaging device is solved.
在一个实施例中,通过使用该光学***100,可以使拍摄装置200的视场角大于115°。由此实现了拍摄范围较大,成像清晰。In one embodiment, by using the optical system 100, the field of view of the photographing device 200 can be greater than 115°. This achieves a large shooting range and clear imaging.
在一个实施例中,光学***100的第一透镜101至第七透镜107的直径均大于拍摄设备21的镜片直径。由此可以实现大像面成像,进而解决了现有拍摄装置的成像面较小,多小于直径为16mm的像面,且分辨率较低和像质较差等问题。In one embodiment, the diameters of the first lens 101 to the seventh lens 107 of the optical system 100 are all larger than the lens diameter of the photographing device 21. As a result, large image plane imaging can be realized, which in turn solves the problems that the imaging surface of the existing imaging device is small, mostly smaller than the image plane with a diameter of 16 mm, and the resolution is low and the image quality is poor.
上述实施例中的拍摄装置,由于使用了本申请实施例提供的光学***,由此可以增加拍摄装置的视场角,同时又提高了拍摄装置的成像质量。Since the photographing device in the foregoing embodiment uses the optical system provided in the embodiment of the present application, the angle of view of the photographing device can be increased, and the imaging quality of the photographing device can be improved at the same time.
请参阅图7,图7是本申请的实施例提供的一种可移动平台的结构示意图。该可移动平台搭载有拍摄装置,实现拍摄。Please refer to FIG. 7, which is a schematic structural diagram of a movable platform provided by an embodiment of the present application. The movable platform is equipped with a shooting device to realize shooting.
如图7所示,可移动平台300包括平台本体310和拍摄装置200,拍摄装置200安装在平台本体310上,拍摄装置200包括光学***100和拍摄设备21,光学***100连接于拍摄设备21上,光学***100采用上述实施例提供的任意一种光学***。As shown in FIG. 7, the movable platform 300 includes a platform body 310 and a photographing device 200. The photographing device 200 is installed on the platform body 310. The photographing device 200 includes an optical system 100 and a photographing device 21. The optical system 100 is connected to the photographing device 21. The optical system 100 adopts any optical system provided in the above-mentioned embodiments.
示例性的,可移动平台300包括飞行器、机器人或手持云台等。Exemplarily, the movable platform 300 includes an aircraft, a robot, or a handheld pan/tilt.
其中,该飞行器包括无人机,该无人机包括旋翼型无人机,例如四旋翼无人机、六旋翼无人机、八旋翼无人机,也可以是固定翼无人机,还可以是旋翼型与固定翼无人机的组合,在此不作限定。Among them, the aircraft includes drones, which include rotary-wing drones, such as four-rotor drones, hexa-rotor drones, and octo-rotor drones. It can also be a fixed-wing drone or It is a combination of rotary-wing and fixed-wing drones, and is not limited here.
其中,机器人也可以称为教育机器人,使用了麦克纳姆轮全向底盘,且全身设有多块智能装甲,每个智能装甲内置击打检测模块,可迅速检测物理打击。同时还包括两轴云台,可以灵活转动,配合发射器准确、稳定、连续地发射水晶弹或红外光束,配合弹道光效,给用户更为真实的射击体验。Among them, the robot can also be called an educational robot. It uses a Mecanum wheel omnidirectional chassis and is equipped with multiple pieces of intelligent armor. Each intelligent armor has a built-in impact detection module that can quickly detect physical strikes. At the same time, it also includes a two-axis pan/tilt, which can be flexibly rotated, matched with the transmitter to accurately, stably and continuously fire crystal bombs or infrared beams, and matched with ballistic light effects, giving users a more realistic shooting experience.
比如,将光学***安装在无人机上,由于光学***可以以增加镜头的视场角,进而可拍摄较大范围的景物,同时又可以提高拍摄装置的成像质量,而且多个透镜的组合使得相对距离较小,进而减小了光学***的体积,实现了小型化和轻便化。由此,在无人机用于航拍时,通过使用该光学***可以拍摄出更好的图像,进而提高了用户的体验度。For example, if the optical system is installed on an unmanned aerial vehicle, the optical system can increase the angle of view of the lens, and then can shoot a larger range of scenes, while improving the imaging quality of the shooting device, and the combination of multiple lenses makes it relatively The distance is small, thereby reducing the volume of the optical system, achieving miniaturization and portability. Therefore, when the drone is used for aerial photography, better images can be taken by using the optical system, thereby improving the user experience.
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到各种等效的修改或替换,这些修改或替换都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应以权利要求的保护范围为准。The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Anyone familiar with the technical field can easily think of various equivalents within the technical scope disclosed in this application. Modifications or replacements, these modifications or replacements shall be covered within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.
Claims (65)
- 一种光学***,其特征在于,所述光学***包括从物侧至像侧依次设置的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜和第七透镜,所述第一透镜、第二透镜、第五透镜、第七透镜具有负光焦度,所述第三透镜、第四透镜、第六透镜具有正光焦度;An optical system, characterized in that the optical system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens arranged in order from the object side to the image side , The first lens, the second lens, the fifth lens, and the seventh lens have negative refractive power, and the third lens, the fourth lens, and the sixth lens have positive refractive power;所述光学***满足以下表达式:The optical system satisfies the following expression:1.5<|f 1/f|<2.5,4<|(f 2+f 1)/f|<6,1<|f 3/f|<2,1<|f 4/f|<2,0.9<|f 5/f|<1.5,0.9<|f 5/f 6|<1.5,4.5<|f 7/f 6|<6,4.5<|f 7/f|<6,4<|TL/f|<5,0.2<|BFL/TL|<0.5; 1.5<|f 1 /f|<2.5, 4 <|(f 2 +f 1 )/f|<6, 1<|f 3 /f|<2, 1<|f 4 /f|<2, 0.9 <| f 5 /f|<1.5,0.9<|f 5 / f 6 | <1.5,4.5 <| f 7 / f 6 | <6,4.5 <| f 7 / f | <6,4 <| TL / f|<5, 0.2<|BFL/TL|<0.5;其中,f是所述光学***的焦距,f 1是所述第一透镜的焦距、f 2是所述第二透镜的焦距,f 3是所述第三透镜的焦距,f 4是所述第四透镜的焦距,f 5是所述第五透镜的焦距,f 6是所述第六透镜的焦距,f 7是所述第七透镜的焦距,TL是所述第一透镜靠近物侧的透镜面中心到成像面为止的光轴上的距离;BFL是所述第七透镜靠近像侧的透镜面中心到成像面为止的光轴上的距离。 Where f is the focal length of the optical system, f 1 is the focal length of the first lens, f 2 is the focal length of the second lens, f 3 is the focal length of the third lens, and f 4 is the first lens. The focal length of the four lenses, f 5 is the focal length of the fifth lens, f 6 is the focal length of the sixth lens, f 7 is the focal length of the seventh lens, and TL is the lens near the object side of the first lens The distance on the optical axis from the surface center to the imaging surface; BFL is the distance on the optical axis from the center of the lens surface of the seventh lens near the image side to the imaging surface.
- 根据权利要求1所述的光学***,其特征在于,所述光学***中至少包括一个玻璃材质的透镜;和/或,所述光学***中至少包括一个塑胶材质的透镜。The optical system according to claim 1, wherein the optical system includes at least one lens made of glass; and/or, the optical system includes at least one lens made of plastic.
- 根据权利要求1所述的光学***,其特征在于,所述第二透镜、第五透镜、第七透镜中至少有一个是塑胶材质的透镜。The optical system according to claim 1, wherein at least one of the second lens, the fifth lens, and the seventh lens is a plastic lens.
- 根据权利要求1所述的光学***,其特征在于,所述光学***中至少有一个透镜是非球面透镜。The optical system according to claim 1, wherein at least one lens in the optical system is an aspheric lens.
- 根据权利要求1所述的光学***,其特征在于,所述第二透镜、第五透镜、第六透镜或第七透镜的两个透镜面中至少有一个是非球面。The optical system according to claim 1, wherein at least one of the two lens surfaces of the second lens, the fifth lens, the sixth lens or the seventh lens is aspherical.
- 根据权利要求1所述的光学***,其特征在于,所述第三透镜和第四透镜位于所述光学***的孔径光阑的两侧。The optical system according to claim 1, wherein the third lens and the fourth lens are located on both sides of an aperture stop of the optical system.
- 根据权利要求6所述的光学***,其特征在于,所述光学***的孔径光阑所处位置的间隔大于4mm,其中,所述所处位置的间隔为与所述孔径光阑相邻的两个透镜之间的距离。The optical system according to claim 6, wherein the distance between the positions of the aperture diaphragm of the optical system is greater than 4mm, and the distance between the positions is two adjacent to the aperture diaphragm. The distance between the two lenses.
- 根据权利要求1所述的光学***,其特征在于,所述第七透镜靠近像侧的透镜面的中心顶点到成像面的间隔大于预设距离。The optical system according to claim 1, wherein the distance from the center vertex of the lens surface of the seventh lens near the image side to the imaging surface is greater than a predetermined distance.
- 根据权利要求8所述的光学***,其特征在于,所述预设距离包括5.6mm。The optical system according to claim 8, wherein the preset distance includes 5.6 mm.
- 根据权利要求1所述的光学***,其特征在于,所述光学***的第二透镜至第七透镜中至少有一个透镜能够作为内对焦透镜组。The optical system according to claim 1, wherein at least one of the second lens to the seventh lens of the optical system can be used as an internal focusing lens group.
- 根据权利要求10所述的光学***,其特征在于,在内对焦时对焦透镜与相邻透镜的间隔均至少大于1.1mm。10. The optical system according to claim 10, wherein the distance between the focusing lens and the adjacent lens during internal focusing is at least greater than 1.1 mm.
- 根据权利要求10所述的光学***,其特征在于,所述光学***的对焦群重量小于0.2g;和/或,在内对焦时,内对焦透镜组对应的调整量小于0.5mm。The optical system according to claim 10, wherein the weight of the focus group of the optical system is less than 0.2g; and/or, during internal focusing, the adjustment amount corresponding to the internal focus lens group is less than 0.5mm.
- 根据权利要求10所述的光学***,其特征在于,所述光学***的视场角大于115°;和/或,所述光学***的画面视场变化小于0.5°。The optical system according to claim 10, wherein the field of view of the optical system is greater than 115°; and/or, the change of the field of view of the optical system is less than 0.5°.
- 根据权利要求10所述的光学***,其特征在于,所述光学***还包括红外透镜,所述红外透镜设置所述第七透镜和所述成像面之间。The optical system according to claim 10, wherein the optical system further comprises an infrared lens, and the infrared lens is disposed between the seventh lens and the imaging surface.
- 根据权利要求1所述的光学***,其特征在于,所述光学***满足如下表达式:The optical system according to claim 1, wherein the optical system satisfies the following expression:(vd 1,vd 4,vd 6)>40,0<(vd 2,vd 3,vd 5,vd 7)<40 (vd 1 ,vd 4 ,vd 6 )>40,0<(vd 2 ,vd 3 ,vd 5 ,vd 7 )<40其中,vd 1、vd 2、vd 3、vd 4、vd 5、vd 6、vd 7分别是所述第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜、第七透镜的色散系数。 Wherein, vd 1 , vd 2 , vd 3 , vd 4 , vd 5 , vd 6 , vd 7 are the first lens, second lens, third lens, fourth lens, fifth lens, sixth lens, Dispersion coefficient of the seventh lens.
- 根据权利要求15所述的光学***,其特征在于,所述第二透镜、第五透镜、第六透镜和第七透镜满足如下表达式:0<(vd 2,vd 5,vd 7)<30,vd 6>75。 The optical system according to claim 15, wherein the second lens, the fifth lens, the sixth lens, and the seventh lens satisfy the following expression: 0<(vd 2 ,vd 5 ,vd 7 )<30 , Vd 6 >75.
- 根据权利要求15或16所述的光学***,其特征在于,所述光学***满足如下表达式:The optical system according to claim 15 or 16, wherein the optical system satisfies the following expression:1.7<(nd 1,nd 3,nd 4)<2,1.4<(nd 2,nd 5,nd 6,nd 7)<1.7 1.7<(nd 1 ,nd 3 ,nd 4 )<2,1.4<(nd 2 ,nd 5 ,nd 6 ,nd 7 )<1.7其中,nd 1、nd 2、nd 3、nd 4、nd 5、nd 6、nd 7分别是所述第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜、第七透镜的折射率。 Wherein, nd 1 , nd 2 , nd 3 , nd 4 , nd 5 , nd 6 , and nd 7 are the first lens, second lens, third lens, fourth lens, fifth lens, sixth lens, The refractive index of the seventh lens.
- 根据权利要求17所述的光学***,其特征在于,所述第三透镜、第六透镜满足如下表达式:nd 3>1.85,nd 6<1.55。 The optical system according to claim 17, wherein the third lens and the sixth lens satisfy the following expressions: nd 3 > 1.85 and nd 6 <1.55.
- 根据权利要求1至14任一项所述的光学***,其特征在于,所述第一透镜满足如下表达式:The optical system according to any one of claims 1 to 14, wherein the first lens satisfies the following expression:0.4<|D 1/R 1|<1,2<|D 1/R 2|<3.6 0.4<|D 1 /R 1 |<1, 2<|D 1 /R 2 |<3.6其中,D 1是所述第一透镜的直径,R 1是所述第一透镜靠近物侧的透镜面的曲率半径,R 2是所述第一透镜靠近像侧的透镜面的曲率半径。 Wherein, D 1 is the diameter of the first lens, R 1 is the radius of curvature of the lens surface of the first lens close to the object side, and R 2 is the radius of curvature of the lens surface of the first lens close to the image side.
- 根据权利要求1至14任一项所述的光学***,其特征在于,所述光学***满足如下表达式:The optical system according to any one of claims 1 to 14, wherein the optical system satisfies the following expression:0.75<|T 1/T 2|<1.25,0.02<|T 2/TL|<0.055,0.04<|T 3/TL|<0.07,0.05<|(T 3+T 4)/TL|<0.15,1<|T 3/T 4|<2,0.01<|T 5/TL|<0.03,0.02<|(T 6+T 7)/TL|<0.15,3.5<|T 6/T 7|<4.5,0.1<|A 1/TL|<0.25,0.12<|(A 1+A 2)/TL|<0.25,0.125<|A 3/TL|<0.2,0.02<|A 4/TL|<0.04,0.25<|(A 4+A 5)/TL|<0.4,0.035<|A 6/TL|<0.06; 0.75<|T 1 /T 2 |<1.25, 0.02<|T 2 /TL|<0.055, 0.04<|T 3 /TL|<0.07, 0.05<|(T 3 +T 4 )/TL|<0.15, 1<|T 3 /T 4 |<2, 0.01<|T 5 /TL|<0.03, 0.02<|(T 6 +T 7 )/TL|<0.15, 3.5 <|T 6 /T 7 |<4.5 , 0.1 <| A 1 /TL|<0.25,0.12<|(A 1 + A 2) / TL | <0.25,0.125 <| A 3 /TL|<0.2,0.02<|A 4 /TL|<0.04, 0.25<|(A 4 +A 5 )/TL|<0.4, 0.035<|A 6 /TL|<0.06;其中,TL是所述第一透镜靠近物侧的透镜面中心顶点到成像面为止的光轴上的距离,T 1至T 7分别是所述第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜、第七透镜的中心厚度;A 1是所述第一透镜与所述第二透镜之间的间隔,A 2是所述第二透镜与所述第三透镜之间的间隔,A 3是所述第三透镜与所述第四透镜之间的间隔,A 4是所述第四透镜与所述第五透镜之间的间隔,A 5是所述第五透镜与所述第六透镜之间的间隔,A 6是所述第六透镜与所述第七透镜之间的间隔。 Wherein, TL is the distance on the optical axis from the center vertex of the lens surface of the first lens close to the object side to the imaging surface, and T 1 to T 7 are the first lens, the second lens, the third lens, and the first lens, respectively. The center thickness of the four lenses, the fifth lens, the sixth lens, and the seventh lens; A 1 is the distance between the first lens and the second lens, and A 2 is the second lens and the third lens. The interval between the lenses, A 3 is the interval between the third lens and the fourth lens, A 4 is the interval between the fourth lens and the fifth lens, and A 5 is the interval between the fourth lens and the fourth lens. The interval between the fifth lens and the sixth lens, A 6 is the interval between the sixth lens and the seventh lens.
- 根据权利要求1所述的光学***,其特征在于,所述光学***总长小于29mm;和/或,所述光学***的透镜***的长度小于23mm,所述透镜***为所述第一透镜物侧面的顶点到所述第七透镜像侧面顶点距离。The optical system according to claim 1, wherein the total length of the optical system is less than 29mm; and/or the length of the lens system of the optical system is less than 23mm, and the lens system is the object side of the first lens The distance from the vertex of the seventh lens to the vertex of the image side of the seventh lens.
- 一种拍摄装置,其特征在于,所述拍摄装置包括光学***和拍摄设备,所述光学***连接于所述拍摄设备,所述光学***包括从物侧到像侧依次设置的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜和第七透镜,所述第一透镜、第二透镜、第五透镜、第七透镜具有负光焦度,所述第三透镜、第四透镜、第六透镜具有正光焦度;A photographing device, characterized in that the photographing device includes an optical system and a photographing device, the optical system is connected to the photographing device, and the optical system includes a first lens and a second lens arranged in sequence from the object side to the image side. The second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens, the first lens, the second lens, the fifth lens, and the seventh lens have negative refractive power, and the third lens The lens, the fourth lens, and the sixth lens have positive refractive power;所述光学***满足以下表达式:The optical system satisfies the following expression:1.5<|f 1/f|<2.5,4<|(f 2+f 1)/f|<6,1<|f 3/f|<2,1<|f 4/f|<2,0.9<|f 5/f|<1.5,0.9<|f 5/f 6|<1.5,4.5<|f 7/f 6|<6,4.5<|f 7/f|<6,4<|TL/f|<5,0.2<|BFL/TL|<0.5; 1.5<|f 1 /f|<2.5, 4 <|(f 2 +f 1 )/f|<6, 1<|f 3 /f|<2, 1<|f 4 /f|<2, 0.9 <| f 5 /f|<1.5,0.9<|f 5 / f 6 | <1.5,4.5 <| f 7 / f 6 | <6,4.5 <| f 7 / f | <6,4 <| TL / f|<5, 0.2<|BFL/TL|<0.5;其中,f是所述光学***的焦距,f 1是所述第一透镜的焦距、f 2是所述第二透镜的焦距,f 3是所述第三透镜的焦距,f 4是所述第四透镜的焦距,f 5是所述第五透镜的焦距,f 6是所述第六透镜的焦距,f 7是所述第七透镜的焦距,TL是所述第一透镜靠近物侧的透镜面中心到成像面为止的光轴上的距离;BFL是 所述第七透镜靠近像侧的透镜面中心到成像面为止的光轴上的距离。 Where f is the focal length of the optical system, f 1 is the focal length of the first lens, f 2 is the focal length of the second lens, f 3 is the focal length of the third lens, and f 4 is the first lens. The focal length of the four lenses, f 5 is the focal length of the fifth lens, f 6 is the focal length of the sixth lens, f 7 is the focal length of the seventh lens, and TL is the lens near the object side of the first lens The distance on the optical axis from the surface center to the imaging surface; BFL is the distance on the optical axis from the center of the lens surface of the seventh lens near the image side to the imaging surface.
- 根据权利要求22所述的拍摄装置,其特征在于,所述光学***中至少包括一个玻璃材质的透镜;和/或,所述光学***中至少包括一个塑胶材质的透镜。The photographing device according to claim 22, wherein the optical system includes at least one lens made of glass; and/or, the optical system includes at least one lens made of plastic.
- 根据权利要求22所述的拍摄装置,其特征在于,所述第二透镜、第五透镜、第七透镜中至少有一个是塑胶材质的透镜。The photographing device according to claim 22, wherein at least one of the second lens, the fifth lens, and the seventh lens is a plastic lens.
- 根据权利要求22所述的拍摄装置,其特征在于,所述光学***中至少有一个透镜是非球面透镜。The photographing device according to claim 22, wherein at least one lens in the optical system is an aspheric lens.
- 根据权利要求22所述的拍摄装置,其特征在于,所述第二透镜、第五透镜、第六透镜或第七透镜的两个透镜面中至少有一个是非球面。The photographing device according to claim 22, wherein at least one of the two lens surfaces of the second lens, the fifth lens, the sixth lens or the seventh lens is aspherical.
- 根据权利要求22所述的拍摄装置,其特征在于,所述第三透镜和第四透镜位于所述光学***的孔径光阑的两侧。The photographing device according to claim 22, wherein the third lens and the fourth lens are located on both sides of an aperture stop of the optical system.
- 根据权利要求27所述的拍摄装置,其特征在于,所述光学***的孔径光阑所处位置的间隔大于4mm,其中,所述所处位置的间隔为与所述孔径光阑相邻的两个透镜之间的距离。The photographing device according to claim 27, wherein the distance between the positions of the aperture diaphragm of the optical system is greater than 4 mm, wherein the distance between the positions is two adjacent to the aperture diaphragm. The distance between the two lenses.
- 根据权利要求22所述的拍摄装置,其特征在于,所述第七透镜靠近像侧的透镜面的中心顶点到成像面的间隔大于预设距离。The photographing device according to claim 22, wherein the distance from the center vertex of the lens surface of the seventh lens near the image side to the imaging surface is greater than a predetermined distance.
- 根据权利要求29所述的拍摄装置,其特征在于,所述预设距离包括5.6mm。The photographing device according to claim 29, wherein the preset distance comprises 5.6 mm.
- 根据权利要求22所述的拍摄装置,其特征在于,所述光学***的第二透镜至第七透镜中至少有一个透镜能够作为内对焦透镜组。The photographing device according to claim 22, wherein at least one of the second lens to the seventh lens of the optical system can be used as an internal focusing lens group.
- 根据权利要求31所述的拍摄装置,其特征在于,在内对焦时对焦透镜与相邻透镜的间隔均至少大于1.1mm。The photographing device according to claim 31, wherein the distance between the focusing lens and the adjacent lens during internal focusing is at least greater than 1.1 mm.
- 根据权利要求31所述的拍摄装置,其特征在于,在内对焦时,内对焦透镜组对应的调整量小于0.5mm;和/或,所述光学***的对焦群重量小于0.2g。The photographing device according to claim 31, wherein, during internal focusing, the adjustment amount corresponding to the internal focusing lens group is less than 0.5 mm; and/or the focus group weight of the optical system is less than 0.2 g.
- 根据权利要求31所述的拍摄装置,其特征在于,所述光学***的视场角大于115°;和/或,所述光学***的画面视场变化小于0.5°。The photographing device according to claim 31, wherein the field of view of the optical system is greater than 115°; and/or the change of the field of view of the optical system is less than 0.5°.
- 根据权利要求31所述的拍摄装置,其特征在于,所述光学***还包括红外透镜,所述红外透镜设置所述第七透镜和所述成像面之间。The photographing device according to claim 31, wherein the optical system further comprises an infrared lens, and the infrared lens is disposed between the seventh lens and the imaging surface.
- 根据权利要求22所述的拍摄装置,其特征在于,所述光学***满足如下表达式:The photographing device according to claim 22, wherein the optical system satisfies the following expression:(vd 1,vd 4,vd 6)>40,0<(vd 2,vd 3,vd 5,vd 7)<40 (vd 1 ,vd 4 ,vd 6 )>40,0<(vd 2 ,vd 3 ,vd 5 ,vd 7 )<40其中,vd 1、vd 2、vd 3、vd 4、vd 5、vd 6、vd 7分别是所述第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜、第七透镜的色散系数。 Wherein, vd 1 , vd 2 , vd 3 , vd 4 , vd 5 , vd 6 , vd 7 are the first lens, second lens, third lens, fourth lens, fifth lens, sixth lens, Dispersion coefficient of the seventh lens.
- 根据权利要求36所述的拍摄装置,其特征在于,所述第二透镜、第五透镜、第六透镜和第七透镜满足如下表达式:0<(vd 2,vd 5,vd 7)<30,vd 6>75。 The photographing device according to claim 36, wherein the second lens, the fifth lens, the sixth lens, and the seventh lens satisfy the following expression: 0<(vd 2 ,vd 5 ,vd 7 )<30 , Vd 6 >75.
- 根据权利要求36或37所述的拍摄装置,其特征在于,所述光学***满足如下表达式:The photographing device according to claim 36 or 37, wherein the optical system satisfies the following expression:1.7<(nd 1,nd 3,nd 4)<2,1.4<(nd 2,nd 5,nd 6,nd 7)<1.7 1.7<(nd 1 ,nd 3 ,nd 4 )<2,1.4<(nd 2 ,nd 5 ,nd 6 ,nd 7 )<1.7其中,nd 1、nd 2、nd 3、nd 4、nd 5、nd 6、nd 7分别是所述第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜、第七透镜的折射率。 Wherein, nd 1 , nd 2 , nd 3 , nd 4 , nd 5 , nd 6 , and nd 7 are the first lens, second lens, third lens, fourth lens, fifth lens, sixth lens, The refractive index of the seventh lens.
- 根据权利要求38所述的拍摄装置,其特征在于,所述第三透镜、第六透镜满足如下表达式:nd 3>1.85,nd 6<1.55。 The photographing device according to claim 38, wherein the third lens and the sixth lens satisfy the following expressions: nd 3 > 1.85 and nd 6 <1.55.
- 根据权利要求22至35任一项所述的拍摄装置,其特征在于,所述第一透镜满足如下表达式:The photographing device according to any one of claims 22 to 35, wherein the first lens satisfies the following expression:0.4<|D 1/R 1|<1,2<|D 1/R 2|<3.6 0.4<|D 1 /R 1 |<1, 2<|D 1 /R 2 |<3.6其中,D 1是所述第一透镜的直径,R 1是所述第一透镜靠近物侧的透镜面的曲率半径,R 2是所述第一透镜靠近像侧的透镜面的曲率半径。 Wherein, D 1 is the diameter of the first lens, R 1 is the radius of curvature of the lens surface of the first lens close to the object side, and R 2 is the radius of curvature of the lens surface of the first lens close to the image side.
- 根据权利要求22至35任一项所述的拍摄装置,其特征在于,所述光学***满足如下表达式:The photographing device according to any one of claims 22 to 35, wherein the optical system satisfies the following expression:0.75<|T 1/T 2|<1.25,0.02<|T 2/TL|<0.055,0.04<|T 3/TL|<0.07,0.05<|(T 3+T 4)/TL|<0.15,1<|T 3/T 4|<2,0.01<|T 5/TL|<0.03,0.02<|(T 6+T 7)/TL|<0.15,3.5<|T 6/T 7|<4.5,0.1<|A 1/TL|<0.25,0.12<|(A 1+A 2)/TL|<0.25,0.125<|A 3/TL|<0.2,0.02<|A 4/TL|<0.04,0.25<|(A 4+A 5)/TL|<0.4,0.035<|A 6/TL|<0.06; 0.75<|T 1 /T 2 |<1.25, 0.02<|T 2 /TL|<0.055, 0.04<|T 3 /TL|<0.07, 0.05<|(T 3 +T 4 )/TL|<0.15, 1<|T 3 /T 4 |<2, 0.01<|T 5 /TL|<0.03, 0.02<|(T 6 +T 7 )/TL|<0.15, 3.5 <|T 6 /T 7 |<4.5 , 0.1 <| A 1 /TL|<0.25,0.12<|(A 1 + A 2) / TL | <0.25,0.125 <| A 3 /TL|<0.2,0.02<|A 4 /TL|<0.04, 0.25<|(A 4 +A 5 )/TL|<0.4, 0.035<|A 6 /TL|<0.06;其中,TL是所述第一透镜靠近物侧的透镜面中心顶点到成像面为止的光轴上的距离,T 1至T 7分别是所述第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜、第七透镜的中心厚度;A 1是所述第一透镜与所述第二透镜之间的间隔,A 2是所述第二透镜与所述第三透镜之间的间隔,A 3是所述第三透镜与所述第四透镜之间的间隔,A 4是所述第四透镜与所述第五透镜之间的间隔, A 5是所述第五透镜与所述第六透镜之间的间隔,A 6是所述第六透镜与所述第七透镜之间的间隔。 Wherein, TL is the distance on the optical axis from the center vertex of the lens surface of the first lens close to the object side to the imaging surface, and T 1 to T 7 are the first lens, the second lens, the third lens, and the first lens, respectively. The center thickness of the four lenses, the fifth lens, the sixth lens, and the seventh lens; A 1 is the distance between the first lens and the second lens, and A 2 is the second lens and the third lens. The distance between the lenses, A 3 is the distance between the third lens and the fourth lens, A 4 is the distance between the fourth lens and the fifth lens, and A 5 is the distance between the fourth lens and the fourth lens. The interval between the fifth lens and the sixth lens, A 6 is the interval between the sixth lens and the seventh lens.
- 根据权利要求22所述的拍摄装置,其特征在于,所述光学***总长小于29mm;和/或,所述光学***的透镜***的长度小于23mm,所述透镜***为所述第一透镜物侧面的顶点到所述第七透镜像侧面顶点距离。The photographing device according to claim 22, wherein the total length of the optical system is less than 29mm; and/or the length of the lens system of the optical system is less than 23mm, and the lens system is the object side of the first lens The distance from the vertex of the seventh lens to the vertex of the image side of the seventh lens.
- 根据权利要求22所述的拍摄装置,其特征在于,所述光学***与所述拍摄设备通过磁吸、粘贴、螺纹或卡扣中的一种或多种连接方式固定连接。The photographing device according to claim 22, wherein the optical system and the photographing device are fixedly connected by one or more of magnetic attraction, pasting, threading, or buckle.
- 一种可移动平台,其特征在于,所述可移动平台包括平台本体和拍摄装置,所述拍摄装置搭载在所述平台本体上;所述拍摄装置包括光学***和拍摄设备,所述光学***连接于所述拍摄设备,所述光学***包括从物侧到像侧依次设置的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜和第七透镜,所述第一透镜、第二透镜、第五透镜、第七透镜具有负光焦度,所述第三透镜、第四透镜、第六透镜具有正光焦度;A movable platform, wherein the movable platform comprises a platform body and a photographing device, the photographing device is mounted on the platform body; the photographing device comprises an optical system and a photographing device, and the optical system is connected In the photographing device, the optical system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens that are sequentially arranged from the object side to the image side. The first lens, the second lens, the fifth lens, and the seventh lens have negative refractive power, and the third lens, the fourth lens, and the sixth lens have positive refractive power;所述光学***满足以下表达式:The optical system satisfies the following expression:1.5<|f 1/f|<2.5,4<|(f 2+f 1)/f|<6,1<|f 3/f|<2,1<|f 4/f|<2,0.9<|f 5/f|<1.5,0.9<|f 5/f 6|<1.5,4.5<|f 7/f 6|<6,4.5<|f 7/f|<6,4<|TL/f|<5,0.2<|BFL/TL|<0.5; 1.5<|f 1 /f|<2.5, 4 <|(f 2 +f 1 )/f|<6, 1<|f 3 /f|<2, 1<|f 4 /f|<2, 0.9 <| f 5 /f|<1.5,0.9<|f 5 / f 6 | <1.5,4.5 <| f 7 / f 6 | <6,4.5 <| f 7 / f | <6,4 <| TL / f|<5, 0.2<|BFL/TL|<0.5;其中,f是所述光学***的焦距,f 1是所述第一透镜的焦距、f 2是所述第二透镜的焦距,f 3是所述第三透镜的焦距,f 4是所述第四透镜的焦距,f 5是所述第五透镜的焦距,f 6是所述第六透镜的焦距,f 7是所述第七透镜的焦距,TL是所述第一透镜靠近物侧的透镜面中心到成像面为止的光轴上的距离;BFL是所述第七透镜靠近像侧的透镜面中心到成像面为止的光轴上的距离。 Where f is the focal length of the optical system, f 1 is the focal length of the first lens, f 2 is the focal length of the second lens, f 3 is the focal length of the third lens, and f 4 is the first lens. The focal length of the four lenses, f 5 is the focal length of the fifth lens, f 6 is the focal length of the sixth lens, f 7 is the focal length of the seventh lens, and TL is the lens near the object side of the first lens The distance on the optical axis from the surface center to the imaging surface; BFL is the distance on the optical axis from the center of the lens surface of the seventh lens near the image side to the imaging surface.
- 根据权利要求44所述的可移动平台,其特征在于,所述光学***中至少包括一个玻璃材质的透镜;和/或,所述光学***中至少包括一个塑胶材质的透镜。The movable platform of claim 44, wherein the optical system includes at least one lens made of glass; and/or, the optical system includes at least one lens made of plastic.
- 根据权利要求44所述的可移动平台,其特征在于,所述第二透镜、第五透镜、第七透镜中至少有一个是塑胶材质的透镜。The movable platform of claim 44, wherein at least one of the second lens, the fifth lens, and the seventh lens is a lens made of plastic material.
- 根据权利要求44所述的可移动平台,其特征在于,所述光学***中至少有一个透镜是非球面透镜。The movable platform of claim 44, wherein at least one lens in the optical system is an aspheric lens.
- 根据权利要求44所述的可移动平台,其特征在于,所述第二透镜、第五透镜、第六透镜或第七透镜的两个透镜面中至少有一个是非球面。The movable platform according to claim 44, wherein at least one of the two lens surfaces of the second lens, the fifth lens, the sixth lens or the seventh lens is aspherical.
- 根据权利要求44所述的可移动平台,其特征在于,所述第三透镜和第四透镜位于所述光学***的孔径光阑的两侧。The movable platform according to claim 44, wherein the third lens and the fourth lens are located on both sides of the aperture stop of the optical system.
- 根据权利要求49所述的可移动平台,其特征在于,所述光学***的孔径光阑所处位置的间隔大于4mm,其中,所述所处位置的间隔为与所述孔径光阑相邻的两个透镜之间的距离。The movable platform according to claim 49, wherein the distance between the positions of the aperture diaphragm of the optical system is greater than 4mm, wherein the distance between the positions is adjacent to the aperture diaphragm The distance between the two lenses.
- 根据权利要求44所述的可移动平台,其特征在于,所述第七透镜靠近像侧的透镜面的中心顶点到成像面的间隔大于预设距离。The movable platform of claim 44, wherein the distance from the center vertex of the lens surface of the seventh lens near the image side to the imaging surface is greater than a preset distance.
- 根据权利要求51所述的可移动平台,其特征在于,所述预设距离包括5.6mm。The movable platform of claim 51, wherein the preset distance includes 5.6 mm.
- 根据权利要求44所述的可移动平台,其特征在于,所述光学***的第二透镜至第七透镜中至少有一个透镜能够作为内对焦透镜组。44. The movable platform of claim 44, wherein at least one of the second lens to the seventh lens of the optical system can be used as an internal focusing lens group.
- 根据权利要求53所述的可移动平台,其特征在于,在内对焦时对焦透镜与相邻透镜的间隔均至少大于1.1mm。The movable platform according to claim 53, wherein the distance between the focusing lens and the adjacent lens during internal focusing is at least greater than 1.1 mm.
- 根据权利要求53所述的可移动平台,其特征在于,在内对焦时,内对焦透镜组对应的调整量小于0.5mm;和/或,所述光学***的对焦群重量小于0.2g。The movable platform according to claim 53, wherein, during internal focusing, the adjustment amount corresponding to the internal focusing lens group is less than 0.5 mm; and/or the focus group weight of the optical system is less than 0.2 g.
- 根据权利要求53所述的可移动平台,其特征在于,所述光学***的视场角大于115°;和/或,所述光学***的画面视场变化小于0.5°。The movable platform according to claim 53, wherein the field of view of the optical system is greater than 115°; and/or the change of the field of view of the optical system is less than 0.5°.
- 根据权利要求53所述的可移动平台,其特征在于,所述光学***还包括红外透镜,所述红外透镜设置所述第七透镜和所述成像面之间。The movable platform according to claim 53, wherein the optical system further comprises an infrared lens, and the infrared lens is disposed between the seventh lens and the imaging surface.
- 根据权利要求44所述的可移动平台,其特征在于,所述光学***满足如下表达式:The movable platform according to claim 44, wherein the optical system satisfies the following expression:(vd 1,vd 4,vd 6)>40,0<(vd 2,vd 3,vd 5,vd 7)<40 (vd 1 ,vd 4 ,vd 6 )>40,0<(vd 2 ,vd 3 ,vd 5 ,vd 7 )<40其中,vd 1、vd 2、vd 3、vd 4、vd 5、vd 6、vd 7分别是所述第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜、第七透镜的色散系数。 Wherein, vd 1 , vd 2 , vd 3 , vd 4 , vd 5 , vd 6 , vd 7 are the first lens, second lens, third lens, fourth lens, fifth lens, sixth lens, Dispersion coefficient of the seventh lens.
- 根据权利要求58所述的可移动平台,其特征在于,所述第二透镜、第五透镜、第六透镜和第七透镜满足如下表达式:0<(vd 2,vd 5,vd 7)<30,vd 6>75。 The movable platform according to claim 58, wherein the second lens, the fifth lens, the sixth lens and the seventh lens satisfy the following expression: 0<(vd 2 ,vd 5 ,vd 7 )< 30, vd 6 >75.
- 根据权利要求58或59所述的可移动平台,其特征在于,所述光学系 统满足如下表达式:The movable platform according to claim 58 or 59, wherein the optical system satisfies the following expression:1.7<(nd 1,nd 3,nd 4)<2,1.4<(nd 2,nd 5,nd 6,nd 7)<1.7 1.7<(nd 1 ,nd 3 ,nd 4 )<2,1.4<(nd 2 ,nd 5 ,nd 6 ,nd 7 )<1.7其中,nd 1、nd 2、nd 3、nd 4、nd 5、nd 6、nd 7分别是所述第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜、第七透镜的折射率。 Wherein, nd 1 , nd 2 , nd 3 , nd 4 , nd 5 , nd 6 , and nd 7 are the first lens, second lens, third lens, fourth lens, fifth lens, sixth lens, The refractive index of the seventh lens.
- 根据权利要求60所述的可移动平台,其特征在于,所述第三透镜、第六透镜满足如下表达式:nd 3>1.85,nd 6<1.55。 The movable platform according to claim 60, wherein the third lens and the sixth lens satisfy the following expressions: nd 3 > 1.85 and nd 6 <1.55.
- 根据权利要求44至57任一项所述的可移动平台,其特征在于,所述第一透镜满足如下表达式:The movable platform according to any one of claims 44 to 57, wherein the first lens satisfies the following expression:0.4<|D 1/R 1|<1,2<|D 1/R 2|<3.6 0.4<|D 1 /R 1 |<1, 2<|D 1 /R 2 |<3.6其中,D 1是所述第一透镜的直径,R 1是所述第一透镜靠近物侧的透镜面的曲率半径,R 2是所述第一透镜靠近像侧的透镜面的曲率半径。 Wherein, D 1 is the diameter of the first lens, R 1 is the radius of curvature of the lens surface of the first lens close to the object side, and R 2 is the radius of curvature of the lens surface of the first lens close to the image side.
- 根据权利要求44至57任一项所述的可移动平台,其特征在于,所述光学***满足如下表达式:The movable platform according to any one of claims 44 to 57, wherein the optical system satisfies the following expression:0.75<|T 1/T 2|<1.25,0.02<|T 2/TL|<0.055,0.04<|T 3/TL|<0.07,0.05<|(T 3+T 4)/TL|<0.15,1<|T 3/T 4|<2,0.01<|T 5/TL|<0.03,0.02<|(T 6+T 7)/TL|<0.15,3.5<|T 6/T 7|<4.5,0.1<|A 1/TL|<0.25,0.12<|(A 1+A 2)/TL|<0.25,0.125<|A 3/TL|<0.2,0.02<|A 4/TL|<0.04,0.25<|(A 4+A 5)/TL|<0.4,0.035<|A 6/TL|<0.06; 0.75<|T 1 /T 2 |<1.25, 0.02<|T 2 /TL|<0.055, 0.04<|T 3 /TL|<0.07, 0.05<|(T 3 +T 4 )/TL|<0.15, 1<|T 3 /T 4 |<2, 0.01<|T 5 /TL|<0.03, 0.02<|(T 6 +T 7 )/TL|<0.15, 3.5 <|T 6 /T 7 |<4.5 , 0.1 <| A 1 /TL|<0.25,0.12<|(A 1 + A 2) / TL | <0.25,0.125 <| A 3 /TL|<0.2,0.02<|A 4 /TL|<0.04, 0.25<|(A 4 +A 5 )/TL|<0.4, 0.035<|A 6 /TL|<0.06;其中,TL是所述第一透镜靠近物侧的透镜面中心顶点到成像面为止的光轴上的距离,T 1至T 7分别是所述第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜、第七透镜的中心厚度;A 1是所述第一透镜与所述第二透镜之间的间隔,A 2是所述第二透镜与所述第三透镜之间的间隔,A 3是所述第三透镜与所述第四透镜之间的间隔,A 4是所述第四透镜与所述第五透镜之间的间隔,A 5是所述第五透镜与所述第六透镜之间的间隔,A 6是所述第六透镜与所述第七透镜之间的间隔。 Wherein, TL is the distance on the optical axis from the center vertex of the lens surface of the first lens close to the object side to the imaging surface, and T 1 to T 7 are the first lens, the second lens, the third lens, and the first lens, respectively. The center thickness of the four lenses, the fifth lens, the sixth lens, and the seventh lens; A 1 is the distance between the first lens and the second lens, and A 2 is the second lens and the third lens. The interval between the lenses, A 3 is the interval between the third lens and the fourth lens, A 4 is the interval between the fourth lens and the fifth lens, and A 5 is the interval between the fourth lens and the fourth lens. The interval between the fifth lens and the sixth lens, A 6 is the interval between the sixth lens and the seventh lens.
- 根据权利要求44所述的可移动平台,其特征在于,所述光学***总长小于29mm;和/或,所述光学***的透镜***的长度小于23mm,所述透镜***为所述第一透镜物侧面的顶点到所述第七透镜像侧面顶点距离。The movable platform according to claim 44, wherein the total length of the optical system is less than 29mm; and/or the length of the lens system of the optical system is less than 23mm, and the lens system is the first lens object. The distance from the vertex of the side surface to the vertex of the seventh lens image side surface.
- 根据权利要求44所述的可移动平台,其特征在于,所述光学***与所述拍摄设备通过磁吸、粘贴、螺纹或卡扣中的一种或多种连接方式固定连接。The movable platform according to claim 44, wherein the optical system and the photographing device are fixedly connected by one or more of magnetic attraction, pasting, threading, or buckle.
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CN211905843U (en) * | 2020-03-30 | 2020-11-10 | 深圳市大疆创新科技有限公司 | Optical system, imaging device, and movable platform |
-
2020
- 2020-03-30 WO PCT/CN2020/082197 patent/WO2021195884A1/en active Application Filing
- 2020-03-30 CN CN202080005227.9A patent/CN112771431B/en not_active Expired - Fee Related
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CN101373261A (en) * | 2007-08-22 | 2009-02-25 | 鸿富锦精密工业(深圳)有限公司 | Wide-angle lens and vehicle apparatus using the same |
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CN108388004A (en) * | 2018-03-26 | 2018-08-10 | 河南翊轩光电科技有限公司 | A kind of starlight grade high definition day and night confocal optics camera lens |
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Publication number | Publication date |
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CN112771431B (en) | 2022-04-22 |
CN112771431A (en) | 2021-05-07 |
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