CN217787496U

CN217787496U - Handheld low-light-level binocular monocular viewer

Info

Publication number: CN217787496U
Application number: CN202222599922.1U
Authority: CN
Inventors: 冯加美
Original assignee: Yunnan Junpin General Equipment Co ltd
Current assignee: Yunnan Junpin General Equipment Co ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2022-11-11
Anticipated expiration: 2032-09-30

Abstract

The application discloses a handheld low-light binocular monocular observation mirror, wherein a front cover plate is fixed at the front end of a shell, an objective lens assembly is fixed in the middle of the front cover plate, and a low-light detector is fixed at the rear end of the objective lens assembly along a light path; two eyepiece lens barrels of the eyepiece lens assembly are respectively fixed at the rear end of the shell, the rear lens group is arranged in the eyepiece lens barrels, the front lens group and the beam splitter prism are fixed in the shell, and an eyepiece hand wheel of the movable rear lens group is arranged at the rear end of the eyepiece lens barrels; the power supply assembly is arranged in the shell and connected with the front cover plate, and the low-light detector is connected with the power supply assembly. This application establishes objective lens subassembly and power supply module on the front shroud, then locates in the casing with the preceding mirror group and the beam splitter prism of eyepiece subassembly, and then the back mirror group is located in adjustable focused eyepiece lens cone, can effectively reduce light path lens quantity to reduce size and weight, also be convenient for assemble and maintain moreover, can also improve user's use comfort and formation of image definition, have compact structure, be convenient for assemble and maintain, with low costs, use comfortable characteristics.

Description

Handheld low-light-level binocular monocular viewer

Technical Field

The application relates to the technical field of low-light-level night vision, in particular to a handheld low-light-level binocular monocular observation mirror which is compact in structure, convenient to assemble and maintain, low in cost and comfortable to use.

Background

The low-light night vision technology is a technology for converting a weak illumination image into an image visible to human eyes in the range of visible light and near infrared bands so as to expand the indirect visual observation capability of human eyes under low illumination, and is widely applied to the fields of military affairs, private edition, outdoor hunting and the like. In order to facilitate carrying and using of the handheld low-light level observation mirror, not only are strict requirements on the volume and the weight of the handheld low-light level observation mirror required, but also good imaging quality and use comfort are required.

At present, in order to improve the visual ability of a low-light level observation mirror, namely, improve the luminous flux of a low-light level detector of the low-light level observation mirror, a large-aperture telescope lens derived from a maca system astronomical telescope is traditionally adopted, but the maca system needs to adopt a longer focal length because of ensuring the imaging quality and high magnification, so that the lens length is longer, the weight is heavier, and the carrying is not facilitated. In addition, the existing low-light level observation mirror generally adopts an image intensifier as a low-light level detector, although the light intensifying capability under low illumination is obvious, the length of the low-light level observation mirror is longer due to the structural limitation, and although the light path of the whole low-light level observation mirror is shortened by a mode of simplifying an objective lens and an eyepiece lens, the length and the weight of the low-light level observation mirror are difficult to obviously reduce due to the innate structure of the low-light level observation mirror, so that the low-light level observation mirror is inconvenient to carry and use. In addition, some of the lenses are replaced by aspheric lenses and cemented lenses, which can shorten the light path and reduce the weight of the lenses, but because the aspheric lenses are difficult to process and high in cost and are only applied to small-batch special low-light-level observation lenses, the cemented lenses are difficult to produce and debug, and the imaging quality is seriously affected by the unreasonable combination between the cemented lenses, so that the effect is still improved even though the cemented lenses are used.

In the prior art, aiming at the defects of a low-light level observation mirror adopting an image intensifier, a special CCD and a special CMOS are adopted as a low-light level detector to shorten and lighten the low-light level detector. However, because the characteristics of the special low-light-level CCD and CMOS are different from those of the image intensifier, and the research is limited at present, the straight-tube type white eyepiece which is relatively simple is generally adopted, so that the light transmission amount is limited, the imaging quality under low illumination is poor, and the low-light-level CCD and CMOS are only used as a common civil or safety auxiliary module. Therefore, although the imaging effect under low illumination can be ensured by a larger light flux amount of the eyepiece adopting the image intensifier in front of the special low-light-level CCD and CMOS, the imaging quality of the eyepiece is not required to be improved due to no targeted optimization. In addition, in order to shorten and lighten the low-light observation mirror, the ocular lenses are required to participate together, but in the prior art, in order to reduce the number of the lenses of the ocular lenses, a fixing structure adopting double-parallelogram prism light splitting is adopted, but the comfort degree of users with different diopters is not good; the problems are difficult to solve by using aspheric lenses and cemented lenses. Therefore, a handheld low-light level observation mirror capable of effectively controlling the length and the weight on the premise of ensuring the imaging quality and the cost is urgently needed to be researched.

SUMMERY OF THE UTILITY MODEL

To the not enough among the prior art, this application provides a compact structure, be convenient for equipment and maintenance, with low costs, use comfortable handheld type shimmer binocular monocular sight glass.

The application is realized as follows: the micro-optical detector is fixedly arranged at the rear end of the objective assembly in the shell along a light path; the eyepiece lens assembly comprises a front lens group, a beam splitter prism, a rear lens group and an eyepiece lens cone which are fixedly arranged at the rear end of the low-light detector, wherein the two eyepiece lens cones are fixedly arranged at the rear end of the shell respectively, the rear lens group is arranged in the eyepiece lens cone, the front lens group and the beam splitter prism are fixedly arranged in the shell along a light path, and an eyepiece hand wheel capable of moving the rear lens group along the light path is arranged at the rear end of the light path of the eyepiece lens cone; the power supply assembly is fixedly arranged on one side of the objective lens assembly of the front cover plate in a penetrating mode, and the micro-light detector is electrically connected with the power supply assembly.

The beneficial effect of this application:

1. this application establishes objective lens subassembly and power supply module on the front shroud, then locate the preceding mirror group and the beam splitter prism of objective lens subassembly in the casing, but the later mirror group is located in the adjustable focused eyepiece lens cone, and through the overall arrangement and the focal power distribution of reasonable optimization objective lens and eyepiece, not only can effectively reduce the lens quantity of objective lens and eyepiece light path, reduce the shared space of optical component, thereby can show size and the weight that reduces the sight glass, and the casing also is convenient for the production equipment and the later maintenance of objective lens subassembly etc. with the components of a whole that can function independently connection structure of front shroud, and can also improve the definition of formation of image through reasonable and targeted lens configuration.

2. This application objective lens subassembly adopts conical objective lens barrel to the objective lens that the cooperation corresponds not only can improve the light flux volume and the angle of vision of camera lens, thereby guarantees little light detector imaging effect and observation distance under the low light level, and the objective lens of this application can also effectual correction to spherical aberration, coma moreover, thereby can improve imaging quality.

3. This application still sets up the eyepiece hand wheel on the eyepiece lens cone to realize the focus regulatory function of eyepiece, can carry out the adaptability according to different users 'diopter and adjust, thereby improve user's use comfort level and formation of image definition.

In conclusion, the device has the characteristics of compact structure, convenience in assembly and maintenance, low cost and comfort in use.

Drawings

FIG. 1 is a schematic cross-sectional view of the present application;

FIG. 2 is an enlarged view of a portion of the objective lens assembly and the micro-detector of FIG. 1;

FIG. 3 is a partial enlarged view of the eyepiece of FIG. 1;

in the figure: 1-shell, 2-objective lens assembly, 201-objective lens barrel, 202-planoconvex lens I, 203-cemented lens I, 204-meniscus lens I, 205-pressing ring I, 206-spacing ring I, 207-pressing ring II, 208-elastic ring I, 209-glare-proof glass, 210-pressing ring III, 3-front cover plate, 4-micro light detector, 401-fixing plate, 402-CCD device, 403-OLED module, 5-eyepiece lens assembly, 501-front lens assembly, 5011-cemented lens II, 5012-meniscus lens II, 5013-biconvex lens I, 5014-cemented lens III, 502-beam splitter, 503-rear lens assembly, 5031-planoconvex lens II, 5032-eyepiece lens IV, 504-eyepiece lens barrel, 505-eyepiece lens barrel, 506-holophote, 6-power supply assembly, 7-connecting lug and 8-rear cover plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.

As shown in fig. 1, 2 and 3, the micro-optical detector comprises a housing 1, an objective lens assembly 2, a front cover plate 3, a micro-optical detector 4, an eyepiece assembly 5 and a power supply assembly 6, wherein the front cover plate 3 is fixedly arranged at the front end of the hollow housing 1, the objective lens assembly 2 is fixedly arranged in the middle of the front cover plate 3 in a penetrating manner, and the micro-optical detector 4 is fixedly arranged at the rear end of the objective lens assembly 2 in the housing 1 along an optical path; the eyepiece assembly 5 comprises a front lens group 501, a beam splitter prism 502, a rear lens group 503 and an eyepiece lens barrel 504 which are fixedly arranged at the rear end of the micro-light detector 4, the eyepiece lens barrel 504 is provided with two eyepiece lens barrels, the two eyepiece lens barrels are respectively and fixedly arranged at the rear end of the shell 1, the rear lens group 503 is arranged in the eyepiece lens barrel 504, the front lens group 501 and the beam splitter prism 502 are fixedly arranged in the shell 1 along a light path, and the rear end of the light path of the eyepiece lens barrel 504 is provided with an eyepiece handwheel 505 capable of moving the rear lens group 503 along the light path; the power supply assembly 6 is fixedly arranged on one side of the objective lens assembly 2 of the front cover plate 3 in a penetrating mode, and the micro-light detector 4 is electrically connected with the power supply assembly 6.

The objective lens assembly 2 comprises a conical objective lens barrel 201 and a planoconvex lens I202, a cemented lens I203 and a meniscus lens I204 which are sequentially fixedly arranged in the objective lens barrel 201 along a light path at intervals, wherein the planoconvex lens I202 and the cemented lens I203 are convex to an object plane, and the meniscus lens I204 is convex to an image plane.

The plano-convex lens I202 is fixed in the objective lens barrel 201 close to one end of an object plane through a pressing ring I205, the cemented lens I203 is fixedly arranged in the middle of the objective lens barrel 201 through a space ring I206, and the meniscus lens I204 is fixedly arranged in the objective lens barrel 201 close to one end of the image plane through a pressing ring II 207.

An elastic ring I208 is also arranged between each lens in the objective lens barrel 201 and the corresponding pressing ring and the corresponding space ring.

The eyepiece lens barrel 504 is fixedly arranged on the outer side of an eyepiece hole of the rear cover plate 8, and the rear cover plate 8 is detachably and fixedly arranged at the rear end of the hollow shell 1.

Strong light prevention glass 209 is further arranged at the front end of the plano-convex lens I202 in the objective lens barrel 201 at intervals, and the strong light prevention glass 209 is fixed in the objective lens barrel 201 through a pressing ring III 210.

The micro light detector 4 comprises a fixing plate 401, a CCD device 402, a control module and an OLED module 403, the fixing plate 401 is detachably and fixedly arranged at the rear end of the objective lens barrel 201, the CCD device 402 is fixedly arranged on the fixing plate 401 and coaxial with the optical path of the objective lens assembly 2, the control module is fixedly arranged on one side of the fixing plate or fixedly connected with the inner wall of the shell 1, and the OLED module 403 is fixedly arranged at the rear end of the fixing plate or fixedly connected with the inner wall of the shell 1.

The front mirror group 501 is arranged at the rear side of the OLED module 403, and the beam splitter prism 502 is an isosceles prism; preceding mirror group 501 is including the cemented lens II 5011, meniscus lens II 5012, biconvex lens I5013, cemented lens III 5014 that set gradually according to the light path, the exit surface of cemented lens II 5011 sets up with the concave surface of meniscus lens II 5012 relatively, the convex surface of meniscus lens II 5012 sets up with the big convex surface of biconvex lens I5013 relatively, the little convex surface of biconvex lens I5013 sets up with the convex surface of cemented lens III 5014 relatively, the concave surface of cemented lens III 5014 sets up with the topside of beam splitter prism 502 relatively.

A total reflection mirror 506 for deflecting the light path by 90 ° is fixedly disposed on the light path of the housing 1 on both sides of the beam splitter prism 502, and the rear mirror group 503 is disposed at the rear end of the light path of the total reflection mirror 506.

The rear lens group 503 comprises a plano-convex lens II 5031 and a cemented lens IV 5032 which are sequentially arranged along a light path, wherein a convex surface of the plano-convex lens II 5031 is opposite to a large convex surface of the cemented lens IV 5032, and a small convex surface of the cemented lens IV 5032 is convex to an image surface.

The lenses of the objective lens assembly 2 are isolated from the objective lens barrel 201, the rear lens group 503 and the eyepiece lens barrel 504 by vibration-damping and impact-resistant glue layers, so that the impact energy of large overload impact on optical glass can be relieved.

The vibration-damping impact-resistant glue is a glue made of any material capable of achieving vibration damping and impact resistance in the existing optical lens.

The hand guard is characterized in that connecting lugs 7 used for fixing hand guard belts are fixedly arranged on two sides of the rear end of the shell 1 and/or two sides of the front cover plate 3, and a control plate is arranged on the top end of the shell 1.

The working process of the application is as follows:

as shown in fig. 1, 2 and 3, when the device is used, the observation mirror of the device is held by hand to a target, a control key on a control panel at the top end of the shell 1 is pressed, the magnification of the low-light detector 4 is adjusted, so that a remote target image is clearly imaged as a standard, then the control key on the control panel can be adjusted as required, parameters of the low-light detector 4 are continuously adjusted, and the adjustment of the brightness, the contrast and the like of the imaged image is realized; then, the eyepiece handwheel 505 is adjusted according to the diopter of the user, and the rear lens group 503 moves axially along the optical axis in the eyepiece barrel 504, so that the image is clear and the vision is comfortable.

The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application are included in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A handheld low-light-level binocular monocular observation mirror is characterized by comprising a shell (1), an objective lens assembly (2), a front cover plate (3), a low-light-level detector (4), an objective lens assembly (5) and a power supply assembly (6), wherein the front cover plate (3) is fixedly arranged at the front end of the hollow shell (1), the objective lens assembly (2) is fixedly arranged in the middle of the front cover plate (3) in a penetrating manner, and the low-light-level detector (4) is fixedly arranged at the rear end of the objective lens assembly (2) in the shell (1) along a light path; the eyepiece assembly (5) comprises a front lens group (501), a beam splitter prism (502), a rear lens group (503) and an eyepiece lens barrel (504) which are fixedly arranged at the rear end of the micro-light detector (4), the eyepiece lens barrel (504) is provided with two eyepiece lens barrels which are respectively and fixedly arranged at the rear end of the shell (1), the rear lens group (503) is arranged in the eyepiece lens barrel (504), the front lens group (501) and the beam splitter prism (502) are fixedly arranged in the shell (1) along a light path, and an eyepiece handwheel (505) capable of moving the rear lens group (503) along the light path is arranged at the rear end of the light path of the eyepiece lens barrel (504); the power supply assembly (6) is fixedly arranged on one side of the objective lens assembly (2) of the front cover plate (3) in a penetrating mode, and the micro-light detector (4) is electrically connected with the power supply assembly (6).

2. The handheld micro-binocular monocular microscope of claim 1, wherein the objective lens assembly (2) comprises a conical objective lens barrel (201), and a planoconvex lens I (202), a cemented lens I (203), and a meniscus lens I (204) which are sequentially and fixedly arranged in the objective lens barrel (201) along an optical path at intervals, wherein the planoconvex lens I (202) and the cemented lens I (203) are convex to an object plane, and the meniscus lens I (204) is convex to an image plane.

3. The handheld micro-optic binocular monocular viewer of claim 2, wherein the plano-convex lens i (202) is fixed in the objective lens barrel (201) near one end of the object plane by a pressing ring i (205), the cemented lens i (203) is fixed in the middle of the objective lens barrel (201) by a spacer ring i (206), and the meniscus lens i (204) is fixed in the objective lens barrel (201) near one end of the image plane by a pressing ring ii (207).

4. The handheld micro-binocular monocular viewer of claim 3, wherein an elastic ring I (208) is further disposed between each lens and the corresponding pressing ring and spacer ring in the objective lens barrel (201).

5. The hand-held type micro-optic binocular monocular viewer of claim 3, wherein the objective lens barrel (201) is further provided with glare proof glass (209) at intervals in front of the plano-convex lens I (202), and the glare proof glass (209) is fixed in the objective lens barrel (201) through a pressing ring III (210).

6. The handheld micro-optic binocular monocular viewer of any one of claims 2 to 5, wherein the micro-optic detector (4) comprises a fixing plate (401), a CCD device (402), a control module, and an OLED module (403), the fixing plate (401) is fixedly disposed at the rear end of the objective lens barrel (201), the CCD device (402) is fixedly disposed on the fixing plate (401) and coaxial with the optical path of the objective lens assembly (2), the control module is fixedly disposed at one side of the fixing plate or fixedly connected with the inner wall of the housing (1), and the OLED module (403) is fixedly disposed at the rear end of the fixing plate or fixedly connected with the inner wall of the housing (1).

7. The handheld low-light-level binocular monocular viewing scope of claim 6, wherein the front lens group (501) is disposed at the rear side of the OLED module (403), the beam splitter prism (502) is an isosceles triangular prism; preceding mirror group (501) are including the cemented lens II (5011), meniscus lens II (5012), biconvex lens I (5013), cemented lens III (5014) that set gradually according to the light path, the concave surface of the exit surface of cemented lens II (5011) and meniscus lens II (5012) sets up relatively, the convex surface of meniscus lens II (5012) and the big convex surface of biconvex lens I (5013) set up relatively, the little convex surface of biconvex lens I (5013) and the convex surface of cemented lens III (5014) set up relatively, the concave surface of cemented lens III (5014) and the relative setting of the topside of beam splitter prism (502).

8. The handheld micro-optic binocular monocular viewing mirror according to claim 7, wherein the housing (1) is fixedly provided with total reflection mirrors (506) for deflecting the optical path by 90 ° on the optical paths at both sides of the beam splitter prism (502), and the rear mirror group (503) is disposed at the rear ends of the optical paths of the total reflection mirrors (506).

9. The hand-held low-light-level binocular monocular viewer of claim 8, wherein the rear mirror group (503) comprises a plano-convex lens II (5031) and a cemented lens IV (5032) which are sequentially arranged according to a light path, a convex surface of the plano-convex lens II (5031) is opposite to a large convex surface of the cemented lens IV (5032), and a small convex surface of the cemented lens IV (5032) is convex to an image surface.

10. The handheld low-light-level binocular monocular viewer of claim 6, wherein both sides of the rear end of the housing (1) and/or both sides of the front cover plate (3) are fixedly provided with attachment lugs (7) for fixing a handguard band, and a control panel is provided on the top end of the housing (1).