CN218272913U - Sighting telescope optical system and optical sighting device - Google Patents
Sighting telescope optical system and optical sighting device Download PDFInfo
- Publication number
- CN218272913U CN218272913U CN202222639142.5U CN202222639142U CN218272913U CN 218272913 U CN218272913 U CN 218272913U CN 202222639142 U CN202222639142 U CN 202222639142U CN 218272913 U CN218272913 U CN 218272913U
- Authority
- CN
- China
- Prior art keywords
- light
- infrared
- incident
- visible light
- lens element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 96
- 239000010408 film Substances 0.000 claims description 39
- 239000012788 optical film Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 10
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 239000004332 silver Substances 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910003437 indium oxide Inorganic materials 0.000 claims description 3
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 claims description 3
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 3
- 229910001887 tin oxide Inorganic materials 0.000 claims description 3
- 229910000416 bismuth oxide Inorganic materials 0.000 claims description 2
- 229910002115 bismuth titanate Inorganic materials 0.000 claims description 2
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 claims description 2
- 230000004927 fusion Effects 0.000 description 12
- 230000005540 biological transmission Effects 0.000 description 8
- 238000003384 imaging method Methods 0.000 description 6
- 230000003595 spectral effect Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000007499 fusion processing Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- -1 chalcogenide compound Chemical class 0.000 description 1
- HTXDPTMKBJXEOW-UHFFFAOYSA-N dioxoiridium Chemical compound O=[Ir]=O HTXDPTMKBJXEOW-UHFFFAOYSA-N 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002366 halogen compounds Chemical class 0.000 description 1
- 238000003331 infrared imaging Methods 0.000 description 1
- 229910000457 iridium oxide Inorganic materials 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 210000001747 pupil Anatomy 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Images
Landscapes
- Telescopes (AREA)
Abstract
The embodiment of the application provides a sighting telescope optical system and an optical sighting device. The sighting telescope optical system comprises a light ray incidence element, a light path adjusting component and an eyepiece component; the light path adjusting component comprises a light splitting lens element and a light combining lens element which are arranged on the light path of the visible light; the visible light enters from the first incident position, travels along a visible light path, transmits through the light splitting lens element and the light combining lens element and enters the eyepiece assembly, the infrared light enters from the second incident position, deviates from the visible light path through reflection of the light splitting lens element, forms an infrared image on one side of the visible light path after achieving light splitting with the visible light, and light signals of the infrared image return to be overlapped with the visible light path through reflection of the light combining lens element and jointly enter the eyepiece assembly after being combined with the visible light transmitted through the light combining lens element.
Description
Technical Field
The application relates to the technical field of optics, in particular to a sighting telescope optical system and an optical sighting device.
Background
In the outdoor field, the white sighting telescope is widely applied, can clearly see the detailed characteristics of a target, but is limited in use time only in the situation of better light in the daytime and is limited in use under the conditions of night, fog, haze or vegetation penetration and the like. The infrared sighting telescope can be used in daytime and at night by utilizing infrared radiation imaging without external ambient light, has wide visual field range and good concealment due to environmental influence, but cannot see the detail characteristics of a target, and has poor image contrast and low resolution detail capability. The infrared and visible light double-light fusion can realize all-weather target identification and detection, however, the currently known double-light fusion product is mainly realized by fusing an infrared image and a visible light image through an algorithm, phenomena such as misalignment, smear and the like are easy to occur in the process of target movement, the requirements on hardware performance are higher for ensuring the processing efficiency and quality, and the cost is greatly increased.
SUMMERY OF THE UTILITY MODEL
In order to solve the existing technical problem, the embodiment of the application provides a sighting telescope optical system and an optical sighting device which realize double-light fusion based on structural design, are low in cost and have good fusion effect.
In order to achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:
in one aspect of the present disclosure, a sighting telescope optical system is provided, which includes a light incident element, a light path adjusting assembly, and an eyepiece assembly; the light path adjusting component comprises a light splitting lens element and a light combining lens element which are arranged on a visible light path; after being incident from the first incident part, visible light travels along the visible light optical path and is incident to the eyepiece assembly after being transmitted through the light splitting lens element and the light combining lens element, infrared light is incident from the second incident part and deviates from the visible light optical path through reflection of the light splitting lens element, an infrared image is formed on one side of the visible light optical path after being split with the visible light, an optical signal of the infrared image returns to be overlapped with the visible light optical path through reflection of the light combining lens element, and the optical signal and the visible light transmitted through the light combining lens element are incident to the eyepiece assembly together after being combined.
In another aspect of the embodiments of the present application, an optical sighting device is provided, which includes a lens barrel and a sighting telescope optical system according to any one of the embodiments of the present application and disposed in the lens barrel.
In the sighting telescope optical system and the optical sighting device provided by the above embodiment, the visible light and the infrared light can be respectively incident through the first incident part and the second incident part of the same light incident element, the light path adjusting assembly includes a light splitting lens element and a light combining lens element which are arranged in the light path of the visible light, and the light splitting lens element and the light combining lens element are used for transmitting the incident visible light; the light splitting lens element is used for splitting incident infrared light and visible light into infrared images, and the light combining lens element combines light signals of the infrared images and the visible light and then jointly irradiates the infrared images and the visible light to the eyepiece assembly.
Drawings
FIG. 1 is a schematic diagram of an optical system of a sighting telescope in one embodiment;
FIG. 2 is a schematic diagram of the arrangement of the sighting telescope optical system shown in FIG. 1;
FIG. 3 is a schematic diagram of an optical sighting device in one embodiment.
Description of the reference symbols:
10 light incident element, 11 first incident part, 12 second incident part, 110 infrared lens, 111 white light objective lens group, 21 infrared detector, 22 display module, 30 light path adjusting element, 31 light splitting lens element, 311 first incident surface, 312 first light emitting surface, 315 light splitting surface, 33 light combining and transmitting element, 331 second incident surface, 332 second light emitting surface, 335 light combining surface, 40 eyepiece assembly, 50 reticle, 61 primary reflector, 612 reflecting part, 614 hollow part, 62 secondary reflector, 70 relay assembly, 90 lens cone
Detailed Description
The technical solution of the present application is further described in detail with reference to the drawings and specific embodiments of the specification.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of implementations of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 and fig. 2, an optical system of a sighting telescope provided by an embodiment of the present application includes a light incident element 10, a light path adjusting assembly 30, and an eyepiece assembly 40; the light incident element 10 includes a first incident portion 11 for providing visible light to enter and pass through and a second incident portion 12 for providing infrared light to enter and pass through, and the light path adjusting component 30 includes a light splitting lens element 31 and a light combining lens element 33 arranged on the light path of the visible light; after the visible light enters from the first entrance portion 11, the visible light travels along the visible light optical path, and enters the eyepiece assembly 40 after passing through the light splitting lens element 31 and the light combining lens element 33, after the infrared light enters from the second entrance portion 12, the infrared light deviates from the visible light optical path through the reflection of the light splitting lens element 31, an infrared image is formed on one side of the visible light optical path after achieving light splitting with the visible light, a light signal of the infrared image returns to be overlapped with the visible light optical path through the reflection of the light combining lens element 33, and the light signal and the visible light which passes through the light combining lens element 33 are combined and enter the eyepiece assembly 40 together.
The first incident portion 11 of the light incident element 10 is a region through which only visible light is incident, that is, a portion through which visible light is incident and infrared light is prevented from being incident; the second incident portion 12 of the light incident element 10 is a region through which only infrared light is incident, that is, a portion through which infrared light is incident and through which visible light is blocked from being incident. Alternatively, the first incident portion 11 may be a connected region located on the light incident element 10, or a plurality of discontinuous regions located on the light incident element 10, and similarly, the second incident portion 12 may also be a connected region located on the light incident element 10, or a plurality of discontinuous regions located on the light incident element 10, in an example, the first incident portion 11 is a central region of the light incident element 10, and the second incident portion 12 is an annular region surrounding the first incident portion 11; in another example, the second incident portion 12 is a plurality of separated regions uniformly distributed around the circumference of the light incident element 10, and the other portions of the light incident element 10 are the first incident portions 11. Alternatively, the first incident portion 11 and the second incident portion 12 are made of materials that allow light rays in different spectral ranges to transmit therethrough, or the first incident portion 11 and/or the second incident portion 12 are provided with different optical films on the side facing the incident direction of the light rays, and the different optical films are made of materials that allow light rays in different spectral ranges to transmit therethrough.
In the above embodiment, the visible light and the infrared light can be respectively incident through the first incident portion 11 and the second incident portion 12 of the same light incident element 10, the light path adjusting assembly 30 includes a light splitting lens element 31 and a light combining lens element 33 which are arranged in the light path of the visible light, and the light splitting lens element 31 and the light combining lens element 33 respectively allow the visible light to transmit through when the incident visible light passes through the light splitting lens element 31 and the light combining lens element 33 in the process of continuing to travel along the light path of the visible light; when the incident infrared light passes through the light splitting lens element 31 and the light combining lens element 33, the light splitting lens element 31 is used for splitting the infrared light and the visible light into an infrared image, the light combining lens element 33 combines a light signal of the infrared image and the visible light and then jointly irradiates the infrared image and the visible light into the eyepiece assembly 40, so that the light path adjusting assembly 30 firstly splits the infrared light and the visible light which are irradiated from the same light irradiating element 10 into independent infrared images and then combines the light signal of the infrared image and the visible light, and the two-light fusion between the visible light and the infrared light can be realized in the real sense without the processing of a fusion algorithm.
In some embodiments, an inclined splitting surface 315 is disposed in the splitting lens element 31, a transflective film is disposed on a side of the splitting surface 315 facing the incident direction of the visible light, an inclined light combining surface 335 is disposed in the light combining lens element 33, and a transflective film is disposed on a side of the light combining surface 335 departing from the incident direction of the visible light; the semi-transparent semi-reflective film is used for transmitting visible light and reflecting infrared light. The spectral lens element 31 is configured to transmit or reflect light rays in different spectral ranges when passing through, so as to adjust a transmission light path of infrared light, so that the infrared light incident to the splitting surface 315 together with visible light is adjusted by the splitting surface 315, an original propagation direction is changed to separate the infrared light from the visible light path, the splitting surface 315 reflects the infrared light, the infrared light reflected by the splitting surface 315 exits in a direction perpendicular to the visible light path to form an infrared imaging path, and an infrared image is formed on one side of the visible light path. The principle of the light combining lens element 33 for adjusting visible light and infrared light is similar to that of the light splitting lens element 31, specifically, the light combining lens element 33 is set to allow light rays in different spectral ranges to be transmitted or reflected when passing through, so as to adjust the transmission light path of infrared light, an optical signal of an infrared image imaged on one side of the visible light path is emitted to the light combining surface 335 along the direction perpendicular to the visible light path, and returns to be overlapped with the visible light path after being reflected by the light combining surface 335, so that the light splitting/combining effect of the visible light and the infrared light coaxially incident from the same light incident element 10 is realized through the design of an optical structure, and double light fusion is realized.
Optionally, the optical system of the sighting telescope further includes an infrared detector 21 and a display module 22 located on one side of the optical path of the visible light; the infrared detector 21 and the light splitting surface 315 are aligned in a direction perpendicular to the visible light path, infrared light is reflected by the light splitting surface 315 and then enters the infrared detector 21, and the infrared detector 21 converts the infrared light into an electric signal; the display module 22 and the light combining surface 335 are aligned in a direction perpendicular to the optical path of the visible light, the display module 22 receives the electrical signal of the infrared detector 21 and displays the corresponding infrared image, and the infrared image is incident to the light combining surface 335 in the form of an optical signal. In this embodiment, the light splitting lens element 31 is rectangular, and includes a first light incident surface 311 facing the incident direction of the visible light and a first light emitting surface 312 facing the light combining lens element 33, and the light splitting surface 315 is obliquely connected between the first light incident surface 311 and the first light emitting surface 312. The splitting surface 315 is inclined toward the incident direction of visible light, the projection surfaces of the first light incident surface 311 and the splitting surface 315 in the vertical direction are located on the same side, and the projection surfaces of the infrared detector 21 and the splitting surface 315 in the horizontal direction are located on the same side, so that infrared light is emitted to the splitting surface 315 through the first light incident surface 311, and is reflected by the splitting surface 315 and then is emitted to the infrared detector 21. The light combining lens element 33 is in a matrix shape, and includes a second light incident surface 331 facing the light splitting lens element 31 and a second light emitting surface 332 facing the eyepiece assembly 40, and the light combining surface 335 is obliquely connected between the second light incident surface 331 and the second light emitting surface 332. The inclination directions of the light combining surface 335 and the light splitting surface 315 are opposite, the second light emitting surface 332 and the projection surface of the light combining surface 335 in the vertical direction are located on the same side, and the display module 22 and the projection surface of the light combining surface 335 in the horizontal direction are located on the same side, so that the light signal of the infrared image displayed in the display module 22 is emitted to the light combining surface 335, reflected by the light combining surface 335 and emitted from the second light emitting surface 332 to the eyepiece assembly 40. Meanwhile, the visible light sequentially transmits through the first light incident surface 311, the splitting surface 315, the first light emitting surface 312, the second light incident surface 331, the light combining surface 335, and the second light emitting surface 332 to exit toward the eyepiece assembly 40. The path of the optical signal of the infrared image from the light combining surface 335 to the eyepiece assembly 40 coincides with the path of the visible light from the light combining surface 335 to the eyepiece assembly 40, so that the double-light fusion is realized.
In some embodiments, the scope optical system further includes a mirror assembly between the light incident element 10 and the optical path adjusting assembly 30, the mirror assembly including a primary mirror 61 and a secondary mirror 62; the main reflector 61 includes a reflection portion 612 and a hollow portion 614, the reflection portion 612 is aligned with the second incident portion 12 in the direction of the visible light path, and reflects the infrared light incident on the surface toward the secondary reflector 62, the secondary reflector 62 reflects the infrared light reflected on the surface toward the hollow portion 614, and the hollow portion 614 is aligned with the light splitting surface 315 in the direction of the visible light path. After the infrared light and the visible light are incident from the first incident portion 11 and the second incident portion 12 of the light incident element 10, the infrared light and the visible light continue to travel along the original incident direction, and the reflection of the infrared light is adjusted by the reflector assembly, so that the infrared light and the visible light are overlapped and incident to the first incident surface 311 of the spectral lens element 31 together. The reflection mirror assembly is matched with the secondary reflection mirror 62 through the primary reflection mirror 61, the reflection part 612 is aligned with the infrared light incidence part, the secondary reflection mirror 62 is located on the reflection light path of the reflection part 612, the reflection part 612 and the secondary reflection mirror 62 reflect the infrared light in two stages and reflect the infrared light to be superposed with the visible light path, and the hollow part 614 is used for allowing the visible light and the infrared light to jointly pass through and be merged to the first incidence surface 311 of the light splitting lens element 31. Optionally, the area of the projection of the light splitting surface 315 on the vertical plane perpendicular to the visible light path is greater than or equal to the size of the hollow portion 614, so that the visible light and the infrared light passing through the hollow portion 614 can be all incident on the light splitting surface 315, so as to avoid light loss as much as possible. In this embodiment, the secondary reflector 62 is located between the light incident element 10 and the primary reflector 61, the side of the reflection portion 612 facing the light incident element 10 is used for reflecting infrared light, and the side of the secondary reflector 62 facing away from the light incident element 10 is used for reflecting infrared light, so that infrared light is directly emitted from the second incident portion 12 to the reflection portion 612, reflected by the reflection portion 612 and reflected back to the secondary reflector 62, and then reflected to the hollow portion 614 of the primary reflector 61 by the secondary reflector 62.
Optionally, the size of the secondary reflecting mirror 62 is smaller than or equal to the size of the hollow portion 614, so that after the secondary reflecting mirror 62 reflects the infrared light, all of the infrared light finally passes through the hollow portion 614 and enters the first light incident surface 311 of the light splitting lens element 31. The surfaces of the side of the reflection portion 612 facing the light incident element 10 and the side of the secondary reflector 62 facing away from the light incident element 10 are respectively provided with a transflective film for transmitting visible light and reflecting infrared light. Thus, the main reflector 61 and the secondary reflector 62 jointly form a catadioptric optical structure which allows visible light to transmit through and changes the original transmission direction of infrared light which is staggered with and transmitted in parallel with the visible light to coincide with the light path of the visible light, so that the large aperture of incident light is realized, and the long-distance detection of a target is facilitated; in addition, in the process that the refraction and reflection type optical structure reflects and adjusts the infrared light to change the original transmission direction until the infrared light is overlapped with the visible light optical path, the length occupied by the reflection optical path formed by the infrared light between the main reflector 61 and the secondary reflector 62 is equivalent to the mutual overlapping with the original transmission direction of the infrared light, so that the total length of the sighting telescope optical system can be effectively reduced; in addition, the focal power of the refraction and reflection type optical structure is mainly born by the reflector, so that the difficulty of eliminating chromatic aberration and thermal difference is reduced.
Optionally, the splitting plane 315, the light combining plane 335, the reflecting part 612 and the secondary reflector 62 are respectively coated with the transflective film as an optical coating, and the bodies of these lens elements can be made of a wide-spectrum material, such as a chalcogenide compound or a halogen compound, so as to transmit visible light and infrared light, and the purpose of transmitting visible light and reflecting infrared light is achieved by the transflective film coated on the surface. The semi-transparent semi-reflective film comprises at least one optical film layer group; each optical film layer group comprises an infrared reflection film and transparent dielectric films positioned on two opposite sides of the infrared reflection film; the infrared reflection film is made of conductive metal; the material of the transparent dielectric film is selected from one of the following: zinc oxide, tin oxide, indium oxide, bismuth oxide, and titanium oxide. In each optical film layer group, the infrared reflection film is clamped between two transparent dielectric films, the number of the optical film layer groups can be set to be multiple, so that the number of the infrared reflection films is correspondingly increased, the reflectivity of the semi-transparent semi-reflection film to infrared light can be increased by increasing the number of the infrared reflection films, but the color and the durability of the semi-transparent semi-reflection film can be influenced, the transmission of visible light can be reduced to a certain extent, and the transparent dielectric films can be used for resisting the reflection of the infrared reflection film to the visible light and controlling other performances and characteristics of the optical film layer groups, such as color and durability.
In an optional specific example, in each group of the optical film layers, the material of the infrared reflection film is silver; the materials of the transparent dielectric films on the two sides are indium tin oxide and dielectric oxide respectively. The silver has good transmission to visible light and good reflection to infrared light, and the infrared reflection film is made of silver and has a thickness of preferably 5nm to 15nm. In indium tin oxide, the ratio of indium oxide to tin oxide may range from 85: 15-95: 4, indium tin oxide is used as the material of the transparent dielectric film, and the deposition thickness can be selected according to the actual requirement, and the material has good optical transmittance to visible light no matter how the deposition thickness is. The dielectric oxide may be selected from silicon oxide, titanium oxide, aluminum oxide, zirconium oxide, iridium oxide or tantalum oxide. In each group of optical film layers, the infrared reflection film is clamped in the middle by adopting indium tin oxide and dielectric oxide as transparent dielectric films, so that the respective advantages of the indium tin oxide and the dielectric oxide are fully utilized to integrally improve the performances of the optical film layer group such as color, durability and the like.
In some embodiments, the light incident element 10 includes an infrared lens 110 having an opening at the center thereof and a white objective lens group 111 disposed at the opening, the white objective lens group 111 is formed as the first incident portion 11, and the infrared lens 110 is formed as the second incident portion 12; the white objective lens group 111, the secondary reflector 62, the hollow portion 614 of the primary reflector 61, the light splitting surface 315, the light combining surface 335, and the eyepiece assembly 40 are sequentially arranged along the direction of the visible light path. The light ray incidence element 10 is in a form that the white light objective lens group 111 is arranged at the opening of the center of the infrared lens 110, so that visible light can only be incident from the white light objective lens group 111 at the center, and infrared light can only be incident from the annular infrared lens 110 surrounding the center, therefore, optical axes of an infrared optical system for infrared image imaging and a white light optical system for visible light image imaging are on the same straight line, and the infrared optical system and the white light optical system can always keep coaxial no matter whether a target in a shooting field of view is in a moving state or not in use, thereby effectively avoiding the fusion effect from being influenced by image non-coincidence in the fusion process of the infrared image and the visible light image, and improving the light energy utilization rate.
Optionally, the optical system of the sighting telescope further includes a relay lens group 70 disposed between the white light objective lens group 111 and the secondary reflecting mirror 62, and the white light objective lens group 111 is configured to receive and condense visible light, and transmit the visible light to the relay lens group 70, so as to implement a relay steering function. For example, the optical sighting device including the sighting telescope optical system according to the embodiment of the present application is a telescope which uses the relay lens group 70 as a steering system to enlarge the field angle of a distant target by collecting a light beam from the distant target, which is much larger than the pupil diameter, into the human eye, so that a person can see details with a smaller angular distance. In some embodiments, the scope optical system further includes a reticle 50, the reticle 50 being located between the splitting lens element 31 and the combining lens element 33. The reticle 50 is provided with a division pattern for superimposing the division pattern in a visible light image of a target to be imaged to utilize aiming.
In order to provide a more general understanding of the scope optical system of the embodiment of the present application, please refer to fig. 2, a straight line path of a light ray is used to represent a visible light path, a circular line path of a light ray is used to represent an infrared light path, and the operating principle of the scope optical system is as follows: light enters the light incidence element 10, visible light can only pass through the white objective lens group 111 in the central opening, and infrared light can only pass through the annular infrared lens 110; for the visible light part, after being incident through the white objective lens group 111, the visible light part sequentially transmits through the relay lens group 70, the secondary reflector 62, the hollow part 614 at the center of the primary reflector 61, the light splitting lens element 31, the reticle 50, the light combining lens element 33 and the eyepiece lens assembly 40, and finally reaches the human eyes; for the infrared light part, the infrared light part enters the reflecting part 612 of the main reflector 61 after entering the infrared lens 110, is reflected to the secondary reflector 62 once by the reflecting part 612, is reflected to the hollow part 614 at the center of the main reflector 61 for the second time by the secondary reflector 62, passes through the hollow part 614 and enters the light splitting lens element 31, is reflected to the infrared detector 21 by the light splitting surface 315 of the light splitting lens element 31, the infrared detector 21 collects the reflected infrared light and converts the infrared light into an electric signal, and displays a corresponding infrared image by the display module 22, the infrared image displayed in the display module 22 enters the light combining surface 335 of the light combining lens element 33 in the form of an optical signal, is reflected and coupled to the eyepiece assembly 40 by the light combining surface 335, and finally reaches human eyes; thus, both visible and infrared light are finally coupled into the eyepiece assembly 40 through the light combining lens element 33 to achieve two-light fusion.
The sighting telescope optical system provided by the embodiment of the application at least has the following characteristics:
first, the light incident element 10 is formed by forming a hole in the center of the infrared lens 110 and disposing the white objective lens group 111 in the hole, so as to realize the coaxiality of the visible light system and the infrared system, to solve the problem of image misalignment in the fusion process caused by different distances between the infrared image imaging and the visible image imaging and different angles of view, and to improve the light energy utilization efficiency;
secondly, a refraction and reflection type optical structure is formed by the main reflector 61 and the secondary reflector 62, so that visible light can be transmitted and pass through, and the original transmission direction of infrared light which is staggered with the visible light and is transmitted in parallel is changed to be superposed with the optical path of the visible light, large-caliber incident light is realized under the condition that the total length of the sighting telescope optical system is small, the long-distance detection of a target is facilitated, and the focal power of the refraction and reflection type optical structure is mainly borne by the reflector, so that the achromatism difficulty and the thermal aberration difficulty can be reduced;
in the third, catadioptric optical structure, a hollow part 614 is arranged through the center of the main reflector 61, and the reflecting part 612 of the main reflector 61 and the surface of the secondary reflector 62 are coated with an optical coating of a semi-transparent and semi-reflective film, so that visible light can be transmitted and infrared light can be reflected, and the function of transmitting both visible light and infrared light can be satisfied;
fourth, a light splitting lens element 31 and a light combining lens element 33 are added in the visible light optical path, so that infrared light and visible light are split and then imaged in the display module 22, and then the light of the display module 22 and the light of the visible light optical path are coupled into the eyepiece assembly 40 and enter human eyes at the same time, without depending on an image fusion algorithm, and optical fusion in the true sense is realized.
It should be noted that the optical system of the sighting telescope according to the embodiment of the present application can be applied to various optical sighting devices that require target imaging for sighting, such as a gun sight, a telescope, a thermal imager, and the like, and is not limited herein. Referring to fig. 3, in another aspect of the present embodiment, an optical sighting device is further provided, which includes a lens barrel 90 and a sighting telescope optical system disposed in the lens barrel 90, the sighting telescope optical system may be the sighting telescope optical system described in any of the foregoing embodiments, the lens barrel 90 provides support for mounting and fixing various optical elements, and a light path channel is formed inside the lens barrel for visible light and infrared light incident from the light incident element 10 to pass through.
The above description is only for the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall cover the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (12)
1. A sighting telescope optical system is characterized by comprising a light ray incidence element (10), a light path adjusting component (30) and an eyepiece component (40); the light incident element (10) comprises a first incident part (11) for providing visible light to enter and pass and a second incident part (12) for providing infrared light to enter and pass, and the light path adjusting component (30) comprises a light splitting lens element (31) and a light combining lens element (33) which are arranged on the light path of the visible light;
after being incident from the first incident part (11), visible light travels along the visible light optical path and is incident to the eyepiece assembly (40) after being transmitted through the light splitting lens element (31) and the light combining lens element (33), infrared light is incident from the second incident part (12), deviates from the visible light optical path through reflection of the light splitting lens element (31), is split from the visible light and forms an infrared image on one side of the visible light optical path, light signals of the infrared image return to be overlapped with the visible light optical path through reflection of the light combining lens element (33), and is incident to the eyepiece assembly (40) together with the visible light transmitted through the light combining lens element (33).
2. The sighting telescope optical system according to claim 1, wherein the beam splitting lens element (31) is provided with an inclined beam splitting surface (315), a semi-transparent and semi-reflective film is arranged on the side of the beam splitting surface (315) facing the incident direction of the visible light, an inclined light combining surface (335) is arranged in the light combining lens element (33), and a semi-transparent and semi-reflective film is arranged on the side of the light combining surface (335) facing away from the incident direction of the visible light;
the semi-transparent semi-reflective film is used for transmitting visible light and reflecting infrared light.
3. The scope optical system according to claim 2, further comprising an infrared detector (21) and a display module (22) located on one side of the visible light path;
the infrared detector (21) is aligned with the light splitting surface (315) in the direction perpendicular to the visible light path, infrared light is reflected by the light splitting surface (315) and then enters the infrared detector (21), and the infrared detector (21) converts the infrared light into an electric signal; the display module (22) is aligned with the light combining surface (335) in a direction perpendicular to the optical path of the visible light, the display module (22) receives the electric signal of the infrared detector (21) and displays the corresponding infrared image, and the infrared image is incident to the light combining surface (335) in the form of an optical signal.
4. The scope optical system according to claim 2, further comprising a mirror assembly between the light incident element (10) and the optical path adjusting assembly (30), the mirror assembly including a primary mirror (61) and a secondary mirror (62);
the main reflection mirror (61) comprises a reflection part (612) and a hollow part (614), the reflection part (612) is aligned with the second incidence part (12) in the direction of the visible light path, infrared light incident on the surface is reflected to the secondary reflection mirror (62), the secondary reflection mirror (62) reflects the infrared light reflected to the surface to the hollow part (614), and the hollow part (614) is aligned with the light splitting surface (315) in the direction of the visible light path.
5. The sight optical system according to claim 4, wherein the sub-mirror (62) is located between the light incidence element (10) and the main mirror (61), and a side of the reflection portion (612) facing the light incidence element (10) is for reflecting infrared light, and a side of the sub-mirror (62) facing away from the light incidence element (10) is for reflecting infrared light.
6. The sight optical system according to claim 4, wherein an area of a projection of the spectroscopic surface (315) on a vertical plane perpendicular to a visible light path is greater than or equal to a size of the cutout (614).
7. The sight optical system according to claim 4, wherein surfaces of the reflecting portion (612) and the sub-reflecting mirror (62) are respectively provided with a transflective film for transmitting visible light and reflecting infrared light.
8. The sight optical system according to claim 4, wherein the light incident element (10) includes an infrared lens (110) centrally provided with an opening and a white objective lens group (111) provided at the opening, the white objective lens group (111) being formed as the first incident portion (11), the infrared lens (110) being formed as the second incident portion (12);
the white light objective lens group (111), the secondary reflector (62), the hollow portion (614) of the primary reflector (61), the light splitting surface (315), the light combining surface (335) and the eyepiece assembly (40) are sequentially arranged along the direction of the visible light path.
9. The sight optical system according to any one of claims 2 to 8, wherein the transflective film includes at least one optical film layer group;
each optical film layer group comprises an infrared reflection film and transparent dielectric films positioned on two opposite sides of the infrared reflection film; the infrared reflection film is made of conductive metal; the material of the transparent dielectric film is selected from one of the following: zinc oxide, tin oxide, indium oxide, bismuth oxide, and titanium oxide.
10. The sight optical system according to claim 9, wherein in each of the optical film layers, the infrared reflective film is made of silver; the materials of the transparent dielectric films on the two sides are indium tin oxide and dielectric oxide respectively.
11. The sight optical system according to any one of claims 1 to 8, further comprising a reticle (50), the reticle (50) being located between the splitting lens element (31) and the combining lens element (33).
12. An optical sighting device comprising a lens barrel (90) and a sighting telescope optical system according to any one of claims 1 to 11 provided in the lens barrel (90).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222639142.5U CN218272913U (en) | 2022-10-08 | 2022-10-08 | Sighting telescope optical system and optical sighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222639142.5U CN218272913U (en) | 2022-10-08 | 2022-10-08 | Sighting telescope optical system and optical sighting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218272913U true CN218272913U (en) | 2023-01-10 |
Family
ID=84749859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222639142.5U Active CN218272913U (en) | 2022-10-08 | 2022-10-08 | Sighting telescope optical system and optical sighting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218272913U (en) |
-
2022
- 2022-10-08 CN CN202222639142.5U patent/CN218272913U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5418584A (en) | Retroreflective array virtual image projection screen | |
| US7483213B2 (en) | Image combining viewer | |
| US7952799B2 (en) | Extreme broadband compact optical system with multiple fields of view | |
| US5847879A (en) | Dual wavelength wide angle large reflective unobscured system | |
| EP0689075B1 (en) | A re-imaging optical system comprising a three-mirror anastigmat and a corrector mirror | |
| JP3553597B2 (en) | Holographic optical element | |
| KR100258710B1 (en) | Solid catadioptric lens | |
| KR100914094B1 (en) | Lightweight laser designator ranger flir optics | |
| US5729376A (en) | Catadioptric multi-functional optical assembly | |
| US5379157A (en) | Compact, folded wide-angle large reflective unobscured optical system | |
| JPH02297516A (en) | Collimation optical system especially for helmet display device | |
| EP2304487B1 (en) | Insertion of laser path in multiple field of view reflective telescope | |
| US4475793A (en) | Integrated optical beam expander | |
| JPH05241080A (en) | Double visual field reflection type picture reforming telescope | |
| CA2908237A1 (en) | Optical configuration for a compact integrated day/night viewing and laser range finding system | |
| US4411499A (en) | Compact optical system | |
| CN111367066A (en) | Coaxial four-reflection optical system | |
| US6888672B2 (en) | Reflector telescope | |
| US10948702B2 (en) | Unobscured two-mirror catadioptric optical system for a multispectral imaging apparatus | |
| CN218272913U (en) | Sighting telescope optical system and optical sighting device | |
| US11567309B2 (en) | On-axis four mirror anastigmat telescope | |
| EP1286208A1 (en) | Image sensor | |
| CN107121760A (en) | A kind of infrared refractive and reflective panorama camera lens of broadband refrigeration | |
| CN114236798A (en) | Catadioptric afocal optical system | |
| CN218272912U (en) | Double-light optical fusion system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Yantai Airui Photo-Electric Technology Co.,Ltd. Assignor: INFIRAY TECHNOLOGIES CO.,LTD. Contract record no.: X2024980006468 Denomination of utility model: Sight optical system and optical aiming device Granted publication date: 20230110 License type: Common License Record date: 20240617 |