CN213581693U

CN213581693U - Camera automatic focusing device

Info

Publication number: CN213581693U
Application number: CN202022942300.5U
Authority: CN
Inventors: 宋振朋; 邵方超
Original assignee: Luster LightTech Co Ltd; Suzhou Luster Vision Intelligent Device Co Ltd
Current assignee: Luster LightTech Co Ltd; Suzhou Luster Vision Intelligent Device Co Ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-06-29
Anticipated expiration: 2030-12-07

Abstract

The utility model relates to an optical equipment technical field specifically discloses a camera automatic focusing device. The device comprises a fixing plate, a driving module, a camera module and a control module; the driving module comprises a first driving unit, a movable plate, a second driving unit and a connecting piece, the first driving unit is fixedly connected to the fixed plate and can drive the movable plate to move, and the second driving unit is fixedly connected to the movable plate and can drive the connecting piece to move along the Y-axis direction; the camera module comprises a camera main body, a lens and a dustproof hose, wherein the camera main body, the lens and the dustproof hose are fixedly connected to the movable plate; the dustproof hose is arranged in a telescopic manner and sleeved with the lens, and two ends of the dustproof hose are respectively clamped on the camera main body and the lens; the control module is in communication connection with the camera module and is used for adjusting the relative positions of the movable plate and the fixed plate and the connecting piece and the movable plate. The device can not only automatically complete the positioning and focusing operation, but also perform dustproof and anti-exposure protection on the lens.

Description

Camera automatic focusing device

Technical Field

The utility model relates to an optical equipment technical field especially relates to a camera automatic focusing device.

Background

The display screen industry often needs to inspect products in a specific process section to ensure product yield, and the equipment for performing the Inspection is referred to as Automatic Optical Inspection (AOI) equipment in the industry. The AOI equipment is generally carried with an industrial camera to detect the defects of the display screen, and the industrial camera generally adopts a fixed-focus camera and a lens to detect the display screen.

In the current AOI inspection process, a camera lens is adjusted by a manual sliding table, so that the center of the camera lens is aligned with the center of the inspected product. Namely, the camera lens is fixed on the manual sliding table, the sliding table is manually adjusted to enable the camera lens to be aligned to the center of a detected product, and then detection is carried out. Because the device space is compact, the manual work is inconvenient to adjust in narrow and small space, and the regulation time is very long, and is inefficient. Meanwhile, the lens of the camera is frequently stretched due to the requirement of focusing operation, so that the damage of the camera caused by dust entering and accidental exposure caused by light source entering are extremely easy to occur, the service life of the device is shortened, and the working efficiency of the device is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a camera automatic focusing device to the unable automatic positioning of solution device is focused and the unable dustproof problem of preventing exposing of camera lens.

To achieve the purpose, the utility model adopts the following technical proposal:

an automatic focusing device of a camera comprises a fixed plate, a driving module, a camera module and a control module; the driving module comprises a first driving unit, a movable plate, a second driving unit and a connecting piece, the first driving unit is fixedly connected to the fixed plate and can drive the movable plate to move, and the second driving unit is fixedly connected to the movable plate and can drive the connecting piece to move along the Y-axis direction; the camera module comprises a camera main body, a lens and a dustproof hose, and the camera main body is fixedly connected to the movable plate; the lens is movably arranged on the camera body, can move along the Y-axis direction and is fixedly connected with the connecting piece; the dustproof hose is arranged in a telescopic manner and sleeved on the lens, one end of the dustproof hose is clamped on the camera main body, and the other end of the dustproof hose is clamped on the lens; the control module is in communication connection with the camera module and is used for adjusting the relative positions of the movable plate and the fixed plate and the relative positions of the connecting piece and the movable plate.

The first driving unit comprises a first motor and a first lead screw, the movable plate is movably mounted on the first lead screw, and the first motor is fixedly connected with the first lead screw and can drive the first lead screw to enable the movable plate to move along the X-axis direction.

Further, the X-axis is perpendicular to the Y-axis.

Preferably, the second driving unit includes a second motor and a second lead screw, the connecting member is movably mounted on the second lead screw, and the second motor is fixedly connected to the second lead screw and can drive the second lead screw to move the connecting member along the Y-axis direction.

Preferably, the first lead screw is further fixedly connected with two lead screw limiting blocks, and the lead screw limiting blocks are used for limiting the moving range of the movable plate.

Preferably, the side surface of the fixed plate is fixedly connected with at least one first auxiliary slide rail arranged along the X-axis direction, the movable plate is provided with a first auxiliary slide rail groove matched with the first auxiliary slide rail, and the first auxiliary slide rail is slidably arranged in the first auxiliary slide rail groove.

Preferably, the fixed plate is fixedly connected with an auxiliary sliding shaft arranged along the X-axis direction, the movable plate is provided with an auxiliary sliding shaft hole matched with the auxiliary sliding shaft, and the auxiliary sliding shaft penetrates through the auxiliary sliding shaft hole.

Furthermore, two ends of the auxiliary sliding shaft are fixedly connected with two sliding shaft limiting blocks, and the sliding shaft limiting blocks are used for limiting the moving range of the movable plate.

Preferably, the side surface of the movable plate is fixedly connected with at least one second auxiliary slide rail arranged along the Y-axis direction, a second auxiliary slide rail groove matched with the second auxiliary slide rail is formed in the connecting piece, and the second auxiliary slide rail is arranged in the second auxiliary slide rail groove in a sliding manner.

Preferably, the camera module further comprises a cable harness capable of protecting cables used to communicatively connect the control module.

The utility model has the advantages that:

positioning operation of the camera body can be completed by means of the first drive unit; the focusing operation of the lens can be completed by the second driving unit; establish the dustproof hose of camera lens through setting up the cover, built camera body and camera lens inner space's darkroom environment, prevented that the veiling glare from influencing imaging quality, still guaranteed camera body and camera lens simultaneously and not polluted by the external world.

Drawings

Fig. 1 is a schematic structural diagram of an auto-focusing device of a camera according to an embodiment of the present invention.

In the figure:

100. a drive module; 110. a first motor; 120. a first lead screw; 121. a lead screw limiting block; 130. a movable plate; 140. a second motor; 150. a second lead screw; 160. a connecting member; 170. a first auxiliary slide rail; 180. an auxiliary slide shaft; 181. a sliding shaft limiting block; 190. a second auxiliary slide rail;

200. a camera module; 210. a camera body; 220. a lens; 230. a dust-proof hose; 240. a cable harness.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the following will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1, the present embodiment provides an auto-focusing apparatus for a camera, which includes a fixing plate 300, a driving module 100, a camera module 200, and a control module; the driving module 100 includes a first driving unit, a movable plate 130, a second driving unit and a connecting member 160, the first driving unit is fixedly connected to the fixed plate 300 and can drive the movable plate 130 to move, the second driving unit is fixedly connected to the movable plate 130 and can drive the connecting member 160 to move along the Y-axis direction; the camera module 200 includes a camera body 210, a lens 220 and a dust hose 230, wherein the camera body 210 is fixedly connected to the movable plate 130; the lens 220 is movably mounted on the camera body 210, can move along the Y-axis direction, and is fixedly connected with the connecting member 160; the dust-proof hose 230 is telescopically arranged and sleeved on the lens 220, one end of the dust-proof hose is clamped on the camera body 210, and the other end of the dust-proof hose is clamped on the lens 220; the control module is communicatively connected to the camera module 200 for adjusting the relative positions of the movable plate 130 and the fixed plate 300 and the connecting member 160 and the movable plate 130. The positioning operation of the camera body 210 can be completed by the first driving unit; the focusing operation of the lens 220 can be completed by means of the second driving unit; the dust-proof hose 230 for sleeving the lens 220 is arranged, so that a darkroom environment of the inner space of the camera body 210 and the lens 220 is created, the imaging quality is prevented from being influenced by stray light, and meanwhile, the camera body 210 and the lens 220 are prevented from being polluted by the outside.

In this embodiment, the first driving unit includes a first motor 110 and a first lead screw 120, the movable plate 130 is movably mounted on the first lead screw 120, the first motor 110 is fixedly connected to the first lead screw 120 and can drive the first lead screw 120, so that the movable plate 130 moves along the X-axis direction; the second driving unit includes a second motor 140 and a second lead screw 150, the connecting member 160 is movably mounted on the second lead screw 150, the second motor 140 is fixedly connected to the second lead screw 150 and can drive the second lead screw 150 to move the connecting member 160 along the Y-axis direction. The movable plate 130 is adjusted to perform positioning operation, so that the position relationship between the camera module 200 and the shot object is adjusted, the camera module 200 is aligned with the center of the shot object, and the image of the camera module 200 is completely captured; the focusing operation is performed by adjusting the connecting member 160, and the focal length between the camera body 210 and the lens 220 is adjusted to ensure clear imaging. The lead screw has high transmission efficiency, high transmission precision, reversibility in movement and long service life.

Specifically, the X-axis is perpendicular to the Y-axis. The X axis and the Y axis are perpendicular to each other, so that the positioning operation and the focusing operation are not mutually influenced, the operation process is simplified, and the working efficiency is improved.

Preferably, the first lead screw 120 is further fixedly connected with two lead screw limiting blocks 121, and the lead screw limiting blocks 121 are used for limiting the moving range of the movable plate 130. The arrangement of the screw limiting block 121 avoids the occurrence of accidents, ensures the operation safety of the first driving unit, and prolongs the service life of the device.

In this embodiment, the side surface of the fixed plate 300 is further fixedly connected with at least one first auxiliary slide rail 170 arranged along the X-axis direction, the movable plate 130 is provided with a first auxiliary slide rail groove matched with the first auxiliary slide rail 170, and the first auxiliary slide rail 170 is slidably arranged in the first auxiliary slide rail groove; an auxiliary sliding shaft 180 arranged along the X-axis direction is fixedly connected above the fixed plate 300, an auxiliary sliding shaft hole matched with the auxiliary sliding shaft 180 is formed in the movable plate 130, and the auxiliary sliding shaft 180 penetrates through the auxiliary sliding shaft hole; the side of the movable plate 130 is further fixedly connected with at least one second auxiliary sliding rail 190 arranged along the Y-axis direction, the connecting member 160 is provided with a second auxiliary sliding rail groove matched with the second auxiliary sliding rail 190, and the second auxiliary sliding rail 190 is slidably arranged in the second auxiliary sliding rail groove. The first auxiliary slide rail 170 and the first auxiliary slide rail groove, and the auxiliary slide shaft 180 and the auxiliary slide shaft hole respectively limit the moving range of the movable plate 130 on different planes of the fixed plate 300, so that the movable plate 130 can only move in the X-axis direction relative to the fixed plate 300; the second auxiliary rail 190 and the second auxiliary rail groove define a moving range of the link 160 on the movable plate 130, so that the link 160 can move only in the Y-axis direction with respect to the movable plate 130; the above arrangement prevents the movable plate 130 from being separated from the fixed plate 300 during the moving process, and the connection member 160 from being separated from the movable plate 130 during the moving process, thereby ensuring the stability of the device operation.

Specifically, two ends of the auxiliary sliding shaft 180 are fixedly connected with two sliding shaft limiting blocks 181, and the sliding shaft limiting blocks 181 are used for limiting the moving range of the movable plate 130. The sliding shaft limiting block 181 avoids the occurrence of an accident, ensures the safety of the operation of the first driving unit, and prolongs the service life of the device.

Preferably, the camera module 200 further includes a cable harness 240, the cable harness 240 capable of protecting cables used to communicatively connect the control module. The arrangement of the cable bundle sleeve 240 not only reduces the probability of damage to the cable caused by accidents, but also enables the cable to be easily stored and arranged, and saves the space occupied by the device.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An auto-focusing device of a camera, comprising:

a fixing plate (300);

the driving module (100) comprises a first driving unit, a movable plate (130), a second driving unit and a connecting piece (160), wherein the first driving unit is fixedly connected to the fixed plate (300) and can drive the movable plate (130) to move, and the second driving unit is fixedly connected to the movable plate (130) and can drive the connecting piece (160) to move along the Y-axis direction;

the camera module (200) comprises a camera body (210), a lens (220) and a dust-proof hose (230), wherein the camera body (210) is fixedly connected to the movable plate (130); the lens (220) is movably arranged on the camera body (210), can move along the Y-axis direction and is fixedly connected with the connecting piece (160); the dustproof hose (230) is arranged in a telescopic manner and sleeved on the lens (220), one end of the dustproof hose is clamped on the camera body (210), and the other end of the dustproof hose is clamped on the lens (220);

a control module, communicatively connected to the camera module (200), for adjusting the relative positions of the movable plate (130) and the fixed plate (300) and the connecting member (160) and the movable plate (130).

2. The camera autofocus device according to claim 1, wherein the first driving unit includes a first motor (110) and a first lead screw (120), the movable plate (130) is movably mounted on the first lead screw (120), and the first motor (110) is fixedly connected to the first lead screw (120) and can drive the first lead screw (120) to move the movable plate (130) along the X-axis direction.

3. The camera autofocus device of claim 2, wherein the X axis is perpendicular to the Y axis.

4. The camera autofocus device according to claim 1, wherein the second driving unit includes a second motor (140) and a second lead screw (150), the connecting member (160) is movably mounted on the second lead screw (150), and the second motor (140) is fixedly connected to the second lead screw (150) and can drive the second lead screw (150) to move the connecting member (160) along the Y-axis direction.

5. The camera auto-focusing device according to claim 2, wherein the first lead screw (120) is further connected with two lead screw limiting blocks (121), and the lead screw limiting blocks (121) are used for limiting the moving range of the movable plate (130).

6. The automatic focusing device of claim 2, wherein the side of the fixed plate (300) is further fixedly connected with at least one first auxiliary sliding rail (170) disposed along the X-axis direction, the movable plate (130) is provided with a first auxiliary sliding rail groove engaged with the first auxiliary sliding rail (170), and the first auxiliary sliding rail (170) is slidably disposed in the first auxiliary sliding rail groove.

7. The automatic focusing device of a camera according to claim 2, wherein an auxiliary sliding shaft (180) is further fixedly connected above the fixed plate (300) along the X-axis direction, an auxiliary sliding shaft hole matched with the auxiliary sliding shaft (180) is formed on the movable plate (130), and the auxiliary sliding shaft (180) is inserted into the auxiliary sliding shaft hole.

8. The camera automatic focusing device according to claim 7, wherein two sliding shaft limiting blocks (181) are fixed to two ends of the auxiliary sliding shaft (180), and the sliding shaft limiting blocks (181) are used for limiting the moving range of the movable plate (130).

9. The automatic focusing device of claim 1, wherein the side of the movable plate (130) is further fixedly connected with at least one second auxiliary sliding rail (190) disposed along the Y-axis direction, the connecting member (160) is provided with a second auxiliary sliding rail groove engaged with the second auxiliary sliding rail (190), and the second auxiliary sliding rail (190) is slidably disposed in the second auxiliary sliding rail groove.

10. The camera autofocus device of any of claims 1 to 9, wherein the camera module (200) further comprises a cable harness (240), the cable harness (240) being capable of protecting cables used to communicatively connect the control module.