CN112099182A - Large-view-field high-zoom-ratio continuous zoom lens based on double-group compensation - Google Patents
Large-view-field high-zoom-ratio continuous zoom lens based on double-group compensation Download PDFInfo
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- CN112099182A CN112099182A CN202011054480.1A CN202011054480A CN112099182A CN 112099182 A CN112099182 A CN 112099182A CN 202011054480 A CN202011054480 A CN 202011054480A CN 112099182 A CN112099182 A CN 112099182A
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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
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
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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
- G02B7/006—Filter holders
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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
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
- G02B7/105—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens with movable lens means specially adapted for focusing at close distances
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Abstract
The invention relates to a large-view-field high-zoom-ratio continuous zoom lens based on double-group compensation. An objective lens group, a zoom group and a front and back compensation group are packaged in the lens tube, and an optical filter switching group, a back fixing seat and a back fixing group are fixed at the back end of the lens tube; the pin is respectively fixed on the zooming group and the front and rear compensation groups after passing through the zooming curve slot and the front and rear compensation curve slot on the zooming lens tube and the straight line slot on the lens tube; the zoom motor set drives the zoom lens tube to rotate, the zoom lens tube drives the pins to move according to respective curved groove paths, and then the zoom set, the front compensation set and the rear compensation set are driven to axially move along the linear grooves in the lens tube, so that the continuous adjustment of the focal length is realized. The invention adopts a double-group compensation structure to compensate the movement amount of the image surface of the large-view-field high-zoom-ratio continuous zoom lens in the zooming process, so that the horizontal angle of the large view field is as high as 58 times, the zoom ratio is as high as 35 times, and the image in the whole zooming process is always kept clear. The lens also has the advantages of small volume, light weight, clear imaging, high resolution and the like.
Description
Technical Field
The invention relates to the technical field of photoelectric equipment, in particular to a large-view-field high-zoom-ratio continuous zoom lens based on double-group compensation.
Background
It is known that in some specific application scenarios, it is important to quickly and accurately acquire high-precision information of a target, which relates to a television imaging device. A television imaging device is a common white light detection device, which generally comprises an optical lens, a detector component, a control circuit component and the like, wherein the optical lens is the basis of the whole television imaging device, and an optical image of a target can be acquired through the optical lens. In order to search for and observe a target in a wide range and to magnify the target with a large magnification for accurate aiming and tracking, a television imaging apparatus generally employs a continuous zoom lens. The continuous zoom lens is an optical imaging system with a continuously changing focal length and an unchanged or basically unchanged image surface in a certain range, and can continuously amplify a target from small to large to generate a sense of distance from near to far. The continuous zoom lens generally depends on two optical components of a zoom group and a compensation group, and moves along an axis according to an optically designed regular position relation, so that the distance between the zoom group and the compensation group is changed to realize continuous change of a focal length, and an image plane is kept clear and stable in the whole zooming process. In this process, the compensation group is mainly used to compensate for the image plane movement at the time of zooming.
On one hand, the observation field of view needs to be as large as possible so as to better observe and search the target, on the other hand, the target needs to be magnified by a long-focus small field of view with a long action distance and a high magnification ratio after the target is found so as to further accurately identify and track the target, and therefore a continuous zoom lens with a large field of view and a high magnification ratio (the ratio of long focus to short focus is the magnification ratio) is needed. The short focus as large as possible is used for observing the view field, the enough zoom ratio is used for satisfying the long focus tracking target, however, the view field is enlarged, the zoom ratio is enlarged, so that the imaging module cannot ensure the whole course of the image in the zooming process to be clear, the target is easily lost in the zooming process, and in addition, the problems of image quality reduction, resolution reduction, difficult zooming curve fitting, difficult optical design and the like exist. In the process, the increase of the optical caliber can also lead to the increase of the volume and the weight of the product, and further increase the difficulty degree of the structural design.
Because of the limitations of optical processing technology, design of cam curved groove of zoom lens tube and processing technology, etc., and the requirement that the image needs to be kept clear in the continuous zooming process, the large field of view of the existing continuous zoom lens and the television equipment carrying the lens is generally less than 20 degrees, and the zoom ratio is generally about 10-15 times. In order to solve the problems, the applicant develops a novel continuous zoom lens based on double-group compensation, the zoom ratio of the large-view-field horizontal angle is improved to 58 degrees and is improved to 35 times, in addition, the image is clear in the whole zooming process, the resolution of a small view field is less than 5 seconds, and the weight of the whole lens is less than 650 g.
Disclosure of Invention
The invention aims to overcome the problems of the conventional continuous zoom lens and provides a high-zoom-ratio large-field-of-view continuous zoom lens based on double-group compensation. The lens mainly comprises a lens tube 1, a zoom lens tube 2, an objective lens group 3, a zoom group 4, a front compensation group 5 and a rear compensation group 6. Wherein the objective lens group 3, the zoom group 4, the front compensation group 5 and the rear compensation group 6 are sequentially arranged inside the lens tube 1, and the zoom lens tube 2 is sleeved on the lens tube 1; the zoom lens tube 2 is provided with a zoom curve slot 23, a front compensation curve slot 24 and a rear compensation curve slot 25, and the lens tube 1 is provided with a zoom linear slot 20, a front compensation linear slot 21 and a rear compensation linear slot 22; the pin 11 is respectively fixed on the zoom group 4, the front compensation group 5 and the rear compensation group 6 after passing through the curve groove on the zoom lens tube 2 and the straight line groove on the lens tube 1; when the zoom lens tube 2 rotates, each pin 11 is driven to move along the corresponding curved groove, and the pin 11 drives the zoom group 4, the front compensation group 5 and the rear compensation group 6 to axially move in the lens tube 1 along the corresponding linear grooves, so that the continuous adjustment of the focal length is realized.
Furthermore, the zoom group 4, the front compensation group 5 and the rear compensation group 6 move in the lens tube 1 according to the respective curved grooves, and the curved grooves are machined according to the mutual positions of the components of the optical design. Wherein the zoom group 4 makes linear motion, the front compensation group 5 and the rear compensation group 6 both make nonlinear motion, and the zoom group 4 has opposite motion direction with the front compensation group 5 and the rear compensation group 6.
Furthermore, two sets of the zooming linear grooves 20, the front compensation linear grooves 21 and the rear compensation linear grooves 22 are symmetrically arranged on the outer peripheral surface of the lens tube 1 along the axis, wherein the zooming linear grooves 20 and the rear compensation linear grooves 22 are arranged on the same straight line and are spaced at a certain distance from each other, and the front compensation linear grooves 21 and the zooming linear grooves 20 or the rear compensation linear grooves 23 are arranged in parallel at a certain distance from each other. Correspondingly, two groups of zooming curve grooves 23, two groups of front compensation curve grooves 24 and two groups of rear compensation curve grooves 25 are symmetrically arranged at corresponding positions on the outer peripheral surface of the zooming mirror tube 2.
Furthermore, steel balls are padded between the conical surfaces at the two ends of the zoom lens tube 2 and the cylindrical surface of the lens tube 1, and friction force in the movement process is reduced by rolling of the steel balls.
Further, the zoom lens system further comprises a zoom motor set 10, the zoom motor set 10 is fixed on the lens tube 1, a gear is arranged at the end of the zoom lens tube 2, and an output shaft of the zoom motor set 10 is in meshing transmission with the gear at the end of the zoom lens tube 2, so that the zoom lens tube 2 is driven to rotate, and the zoom set 4, the front compensation set 5 and the rear compensation set 6 are driven to horizontally slide in the lens tube 1 along the central axis.
Further, the continuous zoom lens further comprises a focusing motor set 9 and a focusing gear 12, wherein the focusing motor set 9 is fixed at the end of the lens tube 1, and the focusing gear 12 is sleeved on the lens tube 1. A focusing straight line groove 19 is arranged at the end part of the lens tube 1, a focusing curve groove 26 is arranged on the focusing gear 12, and an output shaft of the focusing motor group 9 is meshed with the focusing gear 12; the pin passes through a focusing curve slot 26 on the focusing gear 12 and a focusing straight line slot 19 on the lens tube 1 and then is fixedly connected with the objective lens group 3; the focusing motor set 9 drives the focusing gear 12 to rotate, drives the pin 11 to move along the focusing curve slot 26, and the pin 11 drives the objective lens set 3 to move back and forth along the focusing straight line slot of the lens tube to realize micro focusing, so as to provide a stable image for the continuous zoom lens.
Further, 2 focus adjustment curved grooves 26 are provided in the focus adjustment gear 12.
Further, the continuous zoom lens further comprises an optical filter switching group 7, a rear fixing group 8 and a rear fixing seat 15, wherein the optical filter switching group 7 is located between the lens tube 1 and the rear fixing seat 15, the rear fixing seat 15 is fixedly connected with the lens tube 1 after compressing the optical filter switching group 7, and the rear fixing group 8 is fixedly connected with the end face of the rear fixing seat 15 and packaged together. The rear fixed group 8 is mainly used for fine adjustment of the combined focal length of the continuous zoom lens system, and ensures that the system image falls on an image surface.
Furthermore, the optical filter switching group 7 comprises a visible light optical filter 13, a near infrared optical filter 14, an optical filter mounting seat 16 and a connecting rod 17; a visible light filter 13 and a near infrared filter 14 are fixed on the filter mounting seat 16, a sliding groove 18 is arranged between the two filters, one end of a connecting rod 17 is clamped in the sliding groove 18, and the other end is connected with a motor; the motor rotates to drive the connecting rod to move in the sliding groove, and then the optical filter mounting seat is driven to swing left and right, and switching of the optical filters is achieved.
Furthermore, the visible light filter 13 has a working wavelength range of 0.4um to 0.6um, and the near infrared filter 14 has a working wavelength range of 0.7um to 0.9 um.
Compared with the prior art, the continuous zoom lens provided by the invention realizes large zoom ratio and large observation field of view, the focal length of the lens is 6-210 mm, and the zoom ratio reaches 35 times; when a 1920 x 1280/3.45um detector assembly is equipped, the horizontal angle of the large field of view can reach 58 degrees. In addition, the lens has the advantages of small volume, light weight, clear imaging, high resolution and the like.
Drawings
FIG. 1 is a front view of the zoom lens system of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1 taken along the plane of the centerline;
FIG. 3 is a diagram of an optical system of the zoom lens system according to the present invention;
FIG. 4 is a schematic structural view of the lens tube;
FIG. 5 is a schematic view of an angle structure of a zoom lens tube;
FIG. 6 is a schematic view of another angle configuration of the zoom lens tube;
FIG. 7 is a schematic view of a focusing gear;
fig. 8 is a schematic structural diagram of the filter switching set.
The zoom lens comprises a lens tube 1, a zoom lens tube 2, an objective lens group 3, a zoom group 4, a zoom group 5, a front compensation group 6, a rear compensation group 7, an optical filter switching group 8, a rear fixing group 9, a focusing motor group 10, a zoom motor group 11, a pin 12, a focusing gear 13, a visible optical filter 14, a near infrared optical filter 14, a rear fixing seat 15, an optical filter mounting seat 16, a connecting rod 17, an 18 sliding groove 18, a focusing straight line groove 19, a zooming straight line groove 20, a front compensation straight line groove 21, a rear compensation straight line groove 22, a zooming curve groove 23, a front compensation curve groove 24, a rear compensation curve groove 25 and a focusing curve groove 26.
Detailed Description
In order to make those skilled in the art fully understand the technical solutions and advantages of the present invention, the following description is further provided with reference to the specific embodiments and the accompanying drawings.
The existing continuous zoom lens generally comprises four groups of optical elements in order to ensure that the focal length is continuously changed under the condition that the image plane is kept unchanged: the system comprises an objective lens group, a zoom group, a compensation group and a rear fixed group, wherein the objective lens group provides a stable image for the system, the zoom group moves linearly to change the focal length of the system, the compensation group compensates the movement of an image surface after the zoom group moves, and the rear fixed group is used for converting the image transmitted by the compensation group into a real image. The movement of the zooming group and the compensation group has a certain relationship, so the zooming group and the compensation group are driven to synchronously move by a zooming curve groove and a compensation curve groove which are arranged on the zooming mirror tube. The large visual field of the lens is generally below 30 degrees, the zoom ratio is generally below 20, if the visual field and the zoom ratio are increased, the compensation group cannot well compensate the movement of an image surface, zoom parallax generally exists, and the whole-course clearness of an image in the zooming process cannot be guaranteed.
In the application, in order to meet the requirement of large visual field and high zoom ratio, a double-group compensation structure is adopted, a zoom group, a front compensation group and a rear compensation group are linked in the zooming process and move according to the paths and rules specified by respective curve grooves, and the curve grooves are machined according to the mutual positions of all components of optical design. The zoom group 4 makes linear motion, the front compensation group 5 and the rear compensation group 6 make nonlinear motion, the zoom group 4, the front compensation group 5 and the rear compensation group 6 have opposite motion directions, and the continuous change of the focal length and the compensation of the image surface in the zooming process are realized through the change of the mutual distance among the zoom group 4, the front compensation group 5 and the rear compensation group 6. In order to ensure that the zooming group, the front compensation group and the rear compensation group move according to a fixed position relation, three groups of six curve grooves are arranged on the zooming pipe. Because the three groups of curve grooves are all positioned on the zoom tube, the zoom parallax cannot be adjusted by finely adjusting the interval between the zoom group and the compensation group by adopting double-group compensation for correcting the zoom parallax like a common continuous zoom lens, the interval between the zoom group and the compensation group is firstly adjusted when the zoom parallax is corrected, the whole range from a focal length from a small visual field to a middle value of a visual field is ensured to be clear, the interval between the compensation group and the front compensation group is adjusted to ensure that the whole range from the middle value of the visual field to a large visual field is clear, and then the interval between the zoom group and the front compensation group is returned to be finely adjusted to ensure that the whole range from the small visual field to the large visual field is clear, otherwise, the.
Fig. 1-4 show the specific structure and composition of the large-view-field high-zoom-ratio continuous zoom lens based on double-group compensation, which includes a lens tube 1, a zoom lens tube 2, an objective lens group 3, a zoom group 4, a front compensation group 5, a rear compensation group 6, an optical filter switching group 7, a rear fixing group 8, a focusing motor group 9, a zoom motor group 10, a pin 11, a focusing gear 12, a visible light optical filter 13, a near infrared optical filter 14, a rear fixing seat 15, and a plurality of curved grooves and linear grooves arranged on the lens tube and the zoom lens tube. The objective lens group 3, the zoom group 4, the front compensation group 5 and the rear compensation group 6 are sequentially packaged inside the lens tube 1 from front to back, the zoom lens tube 2 is sleeved on the lens tube 1 (a steel ball is arranged between the two), the zoom motor group 10 is installed on the lens tube 1, and the output shaft of the zoom motor group 10 is meshed with the gear at the end part of the zoom lens tube 2 to transmit power. The surface of the zoom lens tube 2 is provided with 3 pairs of six cam curve grooves which are a zoom curve groove 23, a front compensation curve groove 24 and a rear compensation curve groove 25 respectively, the surface of the lens tube 1 is also provided with 3 pairs of six corresponding cam straight grooves which are a zoom straight groove 20, a front compensation straight groove 21 and a rear compensation straight groove 22 respectively, and in addition, the front end of the lens tube is also provided with a plurality of groups of focusing straight grooves 19 independently. The pin passes through the zooming curve slot 23, the front compensation curve slot 24 and the rear compensation curve slot 25 on the zooming mirror tube 2, and the zooming straight line slot 20, the front compensation straight line slot 21 and the rear compensation straight line slot 22 on the mirror tube 1, and then is fixedly connected with the zooming group 4, the front compensation group 5 and the rear compensation group 6 respectively. The zooming motor set 10 is electrified and started to drive the zooming lens tube 2 to rotate, the pin moves along the zooming curve groove 23, the front compensation curve groove 24 and the rear compensation curve groove 25, and the zooming set 4, the front compensation set 5 and the rear compensation set 6 are driven to linearly move back and forth along the zooming linear groove 20, the front compensation linear groove 21 and the rear compensation linear groove 22 on the lens tube to realize focusing.
The objective lens group 3 is arranged inside the front end of the lens tube 1, the focusing gear 12 is sleeved at the front end of the lens tube 1, and the pin 11 is fixedly connected with the objective lens group 3 inside the lens tube after penetrating through the focusing curve slot 26 on the focusing gear and the focusing straight line slot 19 at the end part of the lens tube. The focusing motor set 9 fixed on the lens tube 1 rotates to drive the focusing gear 12 meshed with the lens tube to rotate, the pin 11 moves along the focusing curve slot, and then the objective lens set 3 is driven to move back and forth along the focusing linear slot in the lens tube to realize micro focusing, so that a stable image is provided.
The tail part of the lens tube 1 is also fixedly connected with an optical filter switching group 7, and a rear fixing group 8 is fixedly connected with the optical filter switching group and the lens tube through a rear fixing seat. The rear fixing group 8 is positioned at the tail part of the lens tube 1 and is mainly used for fine adjustment of the combined focal length of the continuous zoom lens system, and the imaging of the system is ensured to fall on an image surface. The optical filter switching group 7 comprises a visible light optical filter 13, a near-infrared optical filter 14, an optical filter mounting seat 16 and a connecting rod 17, wherein the visible light optical filter 13 and the near-infrared optical filter 14 are fixed on the same optical filter mounting seat 16, a sliding groove 18 is arranged between the two optical filters, and one end of the connecting rod 17 is clamped in the sliding groove while the other end is connected with the motor. When the motor rotates, the connecting rod is driven to move in the sliding groove, and then the optical filter mounting seat is driven to swing left and right, and switching of the optical filters is achieved. The working wave band of the visible light filter 13 is 0.4um-0.6um, and when the television imaging module which is cut into the visible light filter 13 is in a visible light color working mode; the working wave band of the near-infrared filter 14 is 0.7um-0.9um, which is a near-infrared wave band, and the television imaging module has a fog-penetrating function when being switched into a near-infrared black-and-white mode when being switched into the near-infrared filter 14.
Considering that the zoom angle of the continuous zoom lens reaches 170 degrees, in order to ensure the strength of the zoom lens tube 2, analog simulation analysis is carried out on the zoom lens tube, so that the design is optimal. In order to avoid the increase of the rotating torque of the zoom lens tube caused by the sudden change of the curve grooves, the curve grooves are optimized during design.
Claims (10)
1. A high zoom ratio large-view-field continuous zoom lens based on double-group compensation is characterized in that: the lens mainly comprises a lens tube (1), a zoom lens tube (2), an objective lens group (3), a zoom group (4), a front compensation group (5) and a rear compensation group (6); wherein the objective lens group (3), the zoom group (4), the front compensation group (5) and the rear compensation group (6) are sequentially arranged inside the lens tube (1), and the zoom lens tube (2) is sleeved on the lens tube (1); a zoom curve groove (23), a front compensation curve groove (24) and a rear compensation curve groove (25) are arranged on the zoom lens tube (2), and a zoom straight line groove (20), a front compensation straight line groove (21) and a rear compensation straight line groove (22) are arranged on the lens tube (1); the pin (11) is respectively fixed on the zoom group (4), the front compensation group (5) and the rear compensation group (6) after passing through the curve groove on the zoom lens tube (2) and the straight line groove on the lens tube (1); when the zoom lens tube (2) rotates, each pin (11) is driven to move along the corresponding curved groove, and the pins (11) drive the zoom group (4), the front compensation group (5) and the rear compensation group (6) to axially move in the lens tube (1) along the corresponding linear grooves, so that the continuous adjustment of focal length is realized.
2. The high magnification ratio large field-of-view zoom lens system as claimed in claim 1, wherein: the zoom group (4), the front compensation group (5) and the rear compensation group (6) move in the lens tube (1) according to paths specified by respective curve grooves, wherein the zoom group (4) does linear motion, the front compensation group (5) and the rear compensation group (6) do nonlinear motion, and the zoom group (4) and the front compensation group (5) and the rear compensation group (6) have opposite motion directions.
3. The high magnification ratio large field-of-view zoom lens system as claimed in claim 1, wherein: the number of the variable-magnification linear grooves (20), the number of the front compensation linear grooves (21) and the number of the rear compensation linear grooves (22) are two groups and are six, wherein the variable-magnification linear grooves (20) and the rear compensation linear grooves (22) are on the same straight line and have a certain distance between the middle parts, and the front compensation linear grooves (21) and the variable-magnification linear grooves (20) or the rear compensation linear grooves (23) are arranged in parallel at a certain distance.
4. The high magnification ratio large field-of-view zoom lens system as claimed in claim 1, wherein: steel balls are padded between the conical surfaces at the two ends of the zoom lens tube (2) and the cylindrical surface of the lens tube (1).
5. The high magnification ratio large field-of-view zoom lens system as claimed in claim 1, wherein: the zoom lens further comprises a zoom motor set (10), the zoom motor set (10) is fixed on the lens tube (1), a gear is arranged at the end of the zoom lens tube (2), and an output shaft of the zoom motor set (10) is in meshing transmission with the gear at the end of the zoom lens tube (2) so as to drive the zoom lens tube (2) to rotate.
6. The high magnification ratio large field-of-view zoom lens system as claimed in claim 1, wherein: the continuous zoom lens also comprises a focusing motor set (9) and a focusing gear (12), wherein the focusing motor set (9) is fixed at the end part of the lens tube (1), and the focusing gear (12) is sleeved on the lens tube (1); a focusing straight line groove (19) is arranged at the end part of the lens tube (1), a focusing curve groove (26) is arranged on the focusing gear (12), and an output shaft of the focusing motor set (9) is meshed with the focusing gear (12); the pin penetrates through a focusing curve slot (26) on the focusing gear (12) and a focusing straight line slot (19) on the lens tube (1) and then is fixedly connected with the objective lens group (3); the focusing motor set (9) drives the focusing gear (12) to rotate, the pin (11) is driven to move along the focusing curve slot (26), and the pin (11) drives the objective lens set (3) to move back and forth along the focusing straight line slot (19) of the lens tube to realize micro focusing.
7. The high magnification ratio large field-of-view zoom lens system as claimed in claim 6, wherein: 2 focusing curve grooves (26) are arranged on the focusing gear (12).
8. The high magnification ratio large field-of-view zoom lens system as claimed in claim 1, wherein: the continuous zoom lens also comprises an optical filter switching group (7), a rear fixed group (8) and a rear fixed seat (15); the optical filter switching group (7) is located between the mirror tube (1) and the rear fixing seat (15), the rear fixing seat (15) is fixedly connected with the mirror tube (1) after compressing the optical filter switching group (7), and the rear fixing group (8) is fixedly connected with the end face of the rear fixing seat (15) and packaged together.
9. The high magnification ratio large field-of-view zoom lens system as claimed in claim 8, wherein: the optical filter switching group (7) comprises a visible light optical filter (13), a near infrared optical filter (14), an optical filter mounting seat (16) and a connecting rod (17); a visible light filter (13) and a near-infrared filter (14) are fixed on the filter mounting seat (16), a sliding groove (18) is arranged between the two filters, one end of a connecting rod (17) is clamped in the sliding groove (18), and the other end of the connecting rod is connected with a motor; the motor rotates to drive the connecting rod to move in the sliding groove, and then the optical filter mounting seat is driven to swing left and right, and switching of the optical filters is achieved.
10. A high magnification ratio large field-of-view zoom lens as claimed in claim 8 or 9, wherein: the working wave band of the visible light filter (13) is 0.4um-0.6um, and the working wave band of the near infrared filter (14) is 0.7um-0.9 um.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113514928A (en) * | 2021-07-28 | 2021-10-19 | 浙江大立科技股份有限公司 | Three-component linkage assembly for continuous zoom lens and continuous zoom lens |
| CN113917647A (en) * | 2021-09-09 | 2022-01-11 | 西安应用光学研究所 | Multi-component continuous zoom lens device based on stepping motor and control method |
| CN114114658A (en) * | 2021-12-02 | 2022-03-01 | 湖北华中光电科技有限公司 | Zoom, focusing and visibility adjustment integrated lens and using method thereof |
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| CN110109237A (en) * | 2019-04-23 | 2019-08-09 | 中国科学院西安光学精密机械研究所 | A kind of underwater big visual field continuous zooming optical system |
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| CN113514928A (en) * | 2021-07-28 | 2021-10-19 | 浙江大立科技股份有限公司 | Three-component linkage assembly for continuous zoom lens and continuous zoom lens |
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