CN214041836U

CN214041836U - Wide-view-field miniature lens for image guidance overload resistance

Info

Publication number: CN214041836U
Application number: CN202021038476.1U
Authority: CN
Inventors: 李海锋
Original assignee: Xi'an Jsbound Technology Corp
Current assignee: Xi'an Jsbound Technology Corp
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2021-08-24
Anticipated expiration: 2030-06-09

Abstract

The utility model belongs to the technical field of optical lens, a wide visual field miniature lens for image guidance anti-overload is disclosed, a through hole is provided in the shell, the diameter of the middle part of the through hole is smaller than the diameter of both ends, a mounting groove is provided on the inner wall of the through hole, a space ring is provided in the mounting groove, and an optical lens is clamped between the mounting groove and the space ring; the front end of the shell is provided with a fairing, and the rear end of the shell is clamped with a pressing ring; the fairing is a negative lens which is fixedly glued with the front end of the shell, and the lens is parallel to the positive direction of the horizontal optical axis; the middle part of the through hole is provided with an aperture diaphragm. The utility model can ensure that the lens has no displacement deformation and fracture under the condition of high overload, the appearance has no change, and the imaging quality is not influenced; the utility model has the characteristics of field of vision is wide, and is small, light in weight, no ghost image, resolution ratio is high, is applicable to miniature image class optical guidance weapon.

Description

Wide-view-field miniature lens for image guidance overload resistance

Technical Field

The utility model belongs to the technical field of optical lens, especially, relate to a be used for anti wide visual field miniature camera lens that transships of image guidance.

Background

Currently, guidance is a technology for guiding and controlling an aircraft to fly to a predetermined target or a predetermined track according to a certain rule, and includes optical guidance, wire guidance, radio guidance, radar guidance, infrared guidance, laser guidance, acoustic guidance, geomagnetic guidance, inertial guidance, astronomical guidance, and the like. In the guidance process, the relative position relation between the aircraft and the preset target or the preset orbit is continuously measured through the guidance system, and guidance information is sent out and transmitted to the aircraft control system so as to control the aircraft to fly to the preset target or the preset orbit.

In recent years, various types of aircrafts are developed towards full-automatic high-precision guidance, and various types of airborne, vehicular, guidance and missile-borne cameras are developed. This presents a significant difficulty in the use of optical lenses, as the camera needs to operate in a high overload environment. This is because the lenses produced at home and abroad at present cannot normally work 100% under a high overload environment, so that the whole product cannot achieve an expected result.

Through the above analysis, the problems and defects of the prior art are as follows: at present, lenses produced at home and abroad can not normally work 100% under a high overload environment, so that the whole product can not achieve an expected result.

The difficulty in solving the above problems and defects is: the optical design, the lens core thickness, the material selection and the structural design meet the overload and assembly requirements.

The significance of solving the problems and the defects is as follows: reliable design and mature process ensure that the lens meets overload requirements and imaging quality is not affected.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model provides a be used for anti wide visual field miniature camera lens that transships of image guidance.

The utility model discloses a realize like this, one kind is used for the anti wide visual field miniature camera lens that transships of image guidance to be provided with:

a housing;

a through hole is formed in the shell, the diameter of the middle of the through hole is smaller than the diameters of the two ends of the through hole, an installation groove is formed in the inner wall of the through hole, a space ring is arranged in the installation groove, and an optical lens is clamped between the installation groove and the space ring; the front end of the shell is provided with a fairing, and the rear end of the shell is connected with a clamping ring in a clamping mode.

Further, the fairing is a negative lens which is fixed with the front end of the shell in an adhesive mode, and the lens is parallel to the optical axis and is horizontally placed in the positive direction.

Further, an aperture diaphragm is arranged in the middle of the through hole.

Further, the shell is trumpet-shaped.

Further, the shell is made of 2A12 aluminum.

Further, the tooth pitch of the pressing ring is larger than 0.5mm, and the thickness of the pressing ring is larger than 1.5 mm.

Further, each lens is individually fixed by a clamping ring.

Further, an air layer between the lenses is controlled by a space ring.

Combine foretell all technical scheme, the utility model discloses the advantage that possesses and positive effect are:

first, the utility model discloses can be under the high condition of overloading, the lens does not have the displacement and warp and break, and the appearance does not have the change, and imaging quality is not influenced.

Second, the utility model has the characteristics of the field of view is wide, and is small, light in weight, no ghost image, resolution ratio is high, is applicable to miniature image class optical guidance weapon.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a wide-field miniature lens for image guidance overload resistance provided by an embodiment of the present invention;

in the figure: 1. a cowling; 2. a lens; 3. a housing; 4. an aperture diaphragm; 5. a space ring; 6. and (5) pressing a ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

To the problem that prior art exists, the utility model provides a be used for the anti wide visual field miniature camera lens that transships of image guidance, it is right to combine the figure below the utility model discloses do detailed description.

As shown in fig. 1, the utility model provides a be used for anti wide visual field miniature camera lens that transships of image guidance includes: fairing 1, lens 2, shell 3, aperture diaphragm 4, space ring 5, clamping ring 6.

Example 1

In the embodiment, a through hole is formed in a shell 3, the diameter of the middle part of the through hole is smaller than the diameters of two ends of the through hole, an installation groove (thread) is formed in the inner wall of the through hole, a space ring 5 is arranged between a lens and a pressing ring, and an optical lens 2 is clamped between the pressing ring and the space ring 5; the front end of the shell 3 is provided with a fairing 1.

Example 2

On the basis of embodiment 1, the shell of the embodiment is made of 2A12 aluminum, the rear end of the shell is clamped with a pressing ring 6, the tooth pitch A of the pressing ring 6 is more than or equal to 0.5, the thickness D is more than or equal to 3A, the inner diameter Q of the pressing ring 6 is more than or equal to 0.1 phi, and phi is the outer diameter of the lens; the inner diameter of the spacer ring 5 is unilateral larger than the effective aperture by more than 0.2mm, the outer diameter is equal to the outer diameter of the corresponding lens, the thickness is increased by 0.1mm on the theoretical value during processing according to the theoretical value, and the assembly process is polished according to actual measurement.

Example 2

On the basis of embodiment 1, the fairing 1 of this embodiment is a negative lens, and is fixed with the front end of the housing 3 by gluing, the lens is parallel and is horizontally placed in the positive direction of the optical axis, the unilateral edge pressing of the lens is not less than 0.1T, and T is the outer diameter of the lens.

Example 3

On the basis of the embodiment 1, the aperture diaphragm 4 is arranged in the middle of the through hole of the embodiment, and the inner aperture of the diaphragm 4 is as large as the aperture requirement of the optical design diaphragm 4 with the tolerance of 0.02 mm. The light-emitting hole is made into a horn type, the thickness of the light-emitting hole is larger than 1mm, and the overload requirement is met.

Example 4

On the basis of the embodiment 1, the periphery of the lens 2 in the shell of the embodiment needs to be coated with polysulfide sealant, and the space ring 5 and the pressing ring 6 also need to be coated with polysulfide sealant.

The utility model discloses a theory of operation does: a through hole is formed in the shell 3, the diameter of the middle of the through hole is smaller than the diameters of the two ends of the through hole, an installation groove (thread) is formed in the inner wall of the through hole, a space ring 5 is arranged between the lenses, and an optical lens 2 is clamped between the pressing ring 6 and the space ring 5; the front end of the shell 3 is provided with a fairing 1.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships 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 being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be covered within the protection scope of the present invention by those skilled in the art within the technical scope of the present invention.

Claims

1. An anti-overload wide-field miniature lens for image guidance is characterized in that the anti-overload wide-field miniature lens for image guidance is provided with:

a housing;

a through hole is formed in the shell, the diameter of the middle of the through hole is smaller than the diameters of the two ends of the through hole, an installation groove is formed in the inner wall of the through hole, each lens is independently fixed through a pressing ring, the lenses and the spacing rings are provided with spacing rings, and optical lenses are clamped between the pressing rings and the spacing rings; and the front end of the shell is provided with a fairing.

2. The wide field of view miniature lens for image guidance anti-overloading of claim 1 wherein said fairing is a negative lens adhesively secured to the front end of the housing, the lens being parallel to and lying in the positive direction of the optical axis.

3. The wide-field miniature lens for image guidance anti-overloading of claim 1 wherein an aperture stop is provided in the middle of said through hole.

4. The wide field of view miniature lens for image guidance resistant to overload of claim 1 wherein said housing is flared.

5. The wide field of view miniature lens for image guidance resistant to overloading of claim 1 wherein said housing is 2a12 aluminum.

6. The wide field of view miniature lens for image guidance anti-overloading of claim 1 wherein said clamping ring has a pitch greater than 0.5mm and a thickness greater than 1.5 mm.

7. The wide field of view miniature lens for image guidance anti-overloading of claim 1 wherein each of said mirrors is individually fixed and spacer thickness is used between the mirrors to control the air layer.

8. The wide field of view miniature lens for image guidance resistant to overloading of claim 1 wherein said mounting slot is threaded.