CN215818288U - Infrared module - Google Patents

Abstract

The utility model discloses an infrared module, which comprises: PCB board, detector, support, shutter subassembly, first lens subassembly and second lens subassembly are installed on the support, are equipped with the cavity that is used for placing the shutter subassembly in the support, and the cavity is located between first lens subassembly and the second lens subassembly, and the shutter subassembly is located between first lens and the second lens promptly, and the FPC of shutter subassembly is drawn forth from the lateral part of support and is connected with the PCB board. Because the shutter assembly is located between the first lens assembly and the second lens assembly, the probability that shutter particles fall onto the surface of the detector is reduced, the falling position of the particles is the upper surface of the second lens assembly, the height from the particles to the pixel area of the detector is increased, the influence of the particle size on imaging is reduced, and the product yield is further improved.

Description

Infrared module

Technical Field

The utility model relates to the technical field of camera shooting, in particular to an infrared module.

Background

For infrared module, once there is the granule to drop on the window surface, then can make infrared imaging appear the bad problem of diffuse speckle. Wherein the shutter is one of the main sources of particles of the module product.

The infrared module mainly comprises a detector, a shutter and a lens, wherein the shutter can be electrified to control the opening and closing of blades, the shutter behind the mirror is more applied at present, namely the shutter is placed between the last lens of the lens and a chip, and the probability of particles falling from the surface of the detector is greatly increased due to factors such as the processing environment, the material characteristics and the blade action friction of the shutter.

In order to reduce the risk that the shutter introduces particles, the design that has the shutter before the mirror at present, be about to the shutter place before the first piece mirror of camera lens, but to same style camera lens, back intercept parameter is fixed, sets up the shutter before the mirror and can lead to the whole height increase of infrared module product, is unfavorable for realizing infrared module product miniaturization and lightweight.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an infrared module which can prevent particles of a shutter component from falling to the surface of a detector, so that the imaging quality is improved.

In order to achieve the purpose, the utility model provides the following technical scheme:

an infrared module, comprising: PCB Board (Printed Circuit Board, the name of chinese characters is Printed Circuit Board), detector, support, shutter assembly, first lens subassembly and second lens subassembly, first lens subassembly with the second lens subassembly is installed on the support, be equipped with in the support and be used for placing the cavity of shutter assembly, the cavity is located first lens subassembly with between the second lens subassembly, the detector is installed on the PCB Board, the PCB Board is installed on the support, the FPC (Flexible Printed Circuit Board, the name of chinese characters is Flexible Circuit Board) of shutter assembly is followed the lateral part of support is drawn forth with the PCB Board is connected.

Preferably, the side wall of the support is provided with an opening for the shutter assembly to extend into the cavity.

Preferably, the outer side wall of the support is provided with a groove for the FPC to pass through.

Preferably, the FPC is stuck in the groove.

Preferably, the opening and the recess are disposed on the same side of the support.

Preferably, a cover plate is hermetically connected to the opening, and the cover plate is used for limiting the shutter assembly in the cavity.

Preferably, the one end of support is equipped with outer lens mount pad, first lens subassembly includes first lens and first clamping ring, first lens threaded connection be in on the outer lens mount pad, first clamping ring is used for with first lens locking is in on the outer lens mount pad.

Preferably, be equipped with interior lens mount pad in the support, second lens subassembly includes second lens and second clamping ring, second lens threaded connection be in on the interior lens mount pad, the second clamping ring be used for with the second lens is locked on the interior lens mount pad.

Compared with the prior art, the technical scheme has the following advantages:

the utility model provides an infrared module, comprising: PCB board, detector, support, shutter subassembly, first lens subassembly and second lens subassembly are installed on the support, are equipped with the cavity that is used for placing the shutter subassembly in the support, and the cavity is located between first lens subassembly and the second lens subassembly, and the shutter subassembly is located between first lens and the second lens promptly, and the FPC of shutter subassembly is drawn forth from the lateral part of support and is connected with the PCB board. Because the shutter assembly is located between the first lens assembly and the second lens assembly, the probability that shutter particles fall onto the surface of the detector is reduced, the falling position of the particles is the upper surface of the second lens assembly, the height from the particles to the pixel area of the detector is increased, the influence of the particle size on imaging is reduced, and the product yield is further improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is an exploded view of an infrared module;

FIG. 2 is a schematic structural diagram of an infrared module;

FIG. 3 is a cross-sectional view of an infrared module;

FIG. 4 is a schematic structural view of a pedestal;

FIG. 5 is a cross-sectional view of the pedestal;

fig. 6 is a schematic structural view of the shutter assembly.

The reference numbers are as follows:

1 is the PCB board, 2 is the support, 201 is the cavity, 202 is the recess, 203 is outer lens mount pad, 204 is interior lens mount pad, 3 is the apron, 4 is the second lens, 5 is first lens, 6 is first clamping ring, 7 is the second clamping ring, 8 is the shutter assembly, 9 is the detector, 10 is FPC.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 6, fig. 1 is an exploded view of an infrared module; FIG. 2 is a schematic structural diagram of an infrared module; FIG. 3 is a cross-sectional view of an infrared module; FIG. 4 is a schematic structural view of a pedestal;

FIG. 5 is a cross-sectional view of the pedestal; fig. 6 is a schematic structural view of the shutter assembly.

The embodiment of the utility model provides an infrared module, which comprises: PCB board 1, detector 9, support 2, shutter subassembly 8, first lens subassembly and second lens subassembly are installed on support 2, specifically first lens subassembly is installed in the one end of support 2, second lens subassembly is installed in support 2, PCB board 1 is installed at the other end of support 2, be equipped with the cavity 201 that is used for placing shutter subassembly 8 in support 2, cavity 201 is located between first lens subassembly and the second lens subassembly, shutter subassembly 8 is located between first lens and the second lens promptly, shutter subassembly 8's FPC10 is drawn forth from the lateral part of support 2 and is connected with PCB board 1. The detector 9 is mounted on the PCB 1, the detector 9 can be attached to the PCB 1 through an adhesive, and then heating and curing are carried out, and because the detector 9 can release heat during working, high-thermal-conductivity silica gel which is high in thermal conductivity, low in expansion coefficient and small in internal stress along with temperature change is preferred. Because shutter subassembly 8 is located between first lens subassembly and the second lens subassembly, has reduced the probability that the shutter granule dropped detector 9 surface, and the granule drops the position and is the upper surface of second lens subassembly, has drawn the height that the granule reaches detector 9 pixel area, has reduced the influence of granule size to the formation of image, has further improved the product yield. In addition, the setting mode of the shutter assembly 8 enables the size of the optical axis direction to be almost consistent with the optical size of the lens, and the miniaturization of the infrared module product can be further realized.

To facilitate the installation of the shutter assembly 8, the side wall of the support 2 is provided with an opening, the opening is communicated with the chamber 201, and the shutter assembly 8 can extend into the chamber 201 through the opening and then be hermetically connected to the opening through the cover plate 3 to limit the shutter assembly 8 in the chamber 201.

In order to facilitate the connection of the shutter assembly 8 to the PCB 1, as shown in fig. 4, the outer sidewall of the holder 2 is provided with a groove 202, and the groove 202 through which the FPC10 passes is connected to the PCB 1. Wherein the opening and the groove 202 are arranged on the same side of the support 2, namely after the FPC10 is led out from the opening of the cavity 201, the FPC is connected with the PCB 1 through the groove 202, and preferably the FPC10 is pasted in the groove 202, so as to improve the connection stability and the production efficiency of the FPC 10.

Regarding the specific installation manner of the first lens assembly and the second lens assembly, as shown in fig. 3 and 5, an outer lens installation seat 203 is arranged at one end of the support 2, the first lens assembly includes a first lens 5 and a first press ring 6, the first lens 5 is located in the outer lens installation seat 203, the first press ring 6 is used for locking the first lens 5 in the outer lens installation seat 203, for example, an internal thread is arranged in the outer lens installation seat 203, the first press ring 5 is provided with an external thread, a first step surface is arranged in the outer lens installation seat 203, and the first lens 5 is abutted against the first step surface through the threaded connection; be equipped with interior lens mount pad 204 in the support 2, the second lens subassembly includes second lens 4 and second clamping ring 7, second lens 4 is located interior lens mount pad 204, second clamping ring 7 is used for locking second lens 4 in interior lens mount pad 204, be equipped with the internal thread in interior lens mount pad 204, second clamping ring 7 is equipped with the external screw thread, be equipped with the second step face in interior lens mount pad 204, both pass through threaded connection, in order to support second lens 4 tightly on the second step face, it is sealed to carry out annular point again after first lens 5 and the locking of second lens 4. Wherein the support 2 is preferably rectangular shell structure, is equipped with the baffle in the casing, forms the space that is used for placing the subassembly that opens the door between one of them lateral wall of baffle and casing, is equipped with above-mentioned interior lens mount pad 204 on the baffle, is equipped with logical unthreaded hole on the baffle, after installing first lens and second lens on support 2 and apron 3 seal on support 2, and cavity 201 is in airtight space, has avoided the granule to drop the surface of detector 9.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The infrared module provided by the utility model is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (8)

1. An infrared module, comprising: PCB board (1), detector (9), support (2), shutter subassembly (8), first lens subassembly and second lens subassembly, first lens subassembly with second lens subassembly installation is in on support (2), be equipped with in support (2) and be used for placing cavity (201) of shutter subassembly (8), cavity (201) are located first lens subassembly with between the second lens subassembly, install detector (9) on PCB board (1), install PCB board (1) on support (2), FPC (10) of shutter subassembly (8) are followed the lateral part of support (2) draw forth with PCB board (1) is connected.

2. Infrared module according to claim 1, characterized in that the side walls of the holder (2) are provided with openings for the shutter assembly (8) to protrude into the chamber (201).

3. Infrared module according to claim 2, characterized in that the outer side wall of said support (2) is provided with a groove (202) for the passage of said FPC (10).

4. Infrared module according to claim 3, characterized in that said FPC (10) is glued inside said recess (202).

5. Infrared module according to claim 3, characterized in that said opening and said recess (202) are arranged on the same side of said support (2).

6. Infrared module according to claim 2, characterized in that a cover plate (3) is hermetically connected to said opening, said cover plate (3) being intended to confine said shutter assembly (8) within said chamber (201).

7. Infrared module according to any of claims 1 to 6, characterised in that one end of the mount (2) is provided with an outer lens mount (203), the first lens assembly comprising a first lens (5) and a first clamping ring (6), the first lens (5) being located in the outer lens mount (203), the first clamping ring (6) being adapted to lock the first lens (5) in the outer lens mount (203).

8. The infrared module as set forth in claim 7, characterized in that an inner lens mount (204) is provided in the mount (2), the second lens assembly comprises a second lens (4) and a second snap ring (7), the second lens (4) is located in the inner lens mount (204), and the second snap ring (7) is used for locking the second lens (4) in the inner lens mount (204).

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