CN216792922U

CN216792922U - Device for correcting center point of lens mount of binocular 3D fisheye camera

Info

Publication number: CN216792922U
Application number: CN202221209865.5U
Authority: CN
Inventors: 张耿
Original assignee: Shenzhen Viewpt Technology Co ltd
Current assignee: Shenzhen Viewpt Technology Co ltd
Priority date: 2022-05-20
Filing date: 2022-05-20
Publication date: 2022-06-21
Anticipated expiration: 2032-05-20

Abstract

The utility model discloses a device for correcting the central point of a lens mount of a binocular 3D fisheye camera, and relates to the technical field of optical structure fixing devices. The device comprises a test frame, a test card, a limiting part and a test card fixing part; the lens module is fixed on the acrylic panel of the test frame through the limiting piece, and the test card is fixed on the acrylic panel of the test frame through the test card fixing piece; the fixing surface of the lens module and the fixing surface of the test card are perpendicular to the horizontal plane, and the physical center position of the lens module is superposed with the center point of the cross line of the test card. The utility model can make the lens mount coincide with the central point of the image sensor before the lens carries out image calibration, and avoid the waste of effective pixels of the image sensor, thereby improving the utilization rate of the image sensor and reducing the cost.

Description

Device for correcting center point of lens mount of binocular 3D fisheye camera

Technical Field

The utility model relates to the technical field of optical structure fixing devices, in particular to a device for correcting a center point of a lens mount of a binocular 3D fisheye camera.

Background

The accuracy of the PCB and lens holder is currently approximately within the error range of 0.1 mm, but 0.1 mm, for an image sensor, results in an error range of tens or even hundreds of pixels. The current main technical method is to calibrate an image after a lens mount is fixed, and cut the image according to the radius of a circle center after the position of the circle center is calibrated. Therefore, it is an urgent problem for those skilled in the art to overlap the lens mount and the center point of the image sensor to avoid wasting effective pixels of the image sensor.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a device for correcting a center point of a lens mount of a binocular 3D fisheye camera, which can make the lens mount coincide with the center point of an image sensor before a lens performs image calibration, so as to avoid waste of effective pixels of the image sensor as much as possible, thereby improving a utilization rate of the image sensor and reducing cost.

In order to achieve the purpose, the utility model adopts the following technical scheme: a device for correcting the center point of a lens mount of a binocular 3D fisheye camera comprises a test frame, a test card, a limiting piece and a test card fixing piece; the lens module is fixed on the acrylic panel of the test frame through the limiting piece, and the test card is fixed on the acrylic panel of the test frame through the test card fixing piece; the fixing surface of the lens module and the fixing surface of the test card are perpendicular to the horizontal plane, and the physical center position of the lens module is superposed with the center point of the cross line of the test card.

Optionally, the test jig is of a U-shaped structure.

Optionally, the lens module includes two lenses, and a screw locking module and a spring rebound module are respectively disposed on the lens mount.

Optionally, the screw locking module is configured to fix a position of the lens mount when the lens mount is aligned with the central point of the image sensor.

Optionally, the test jig is an acrylic test jig.

According to the technical scheme, compared with the prior art, the device for correcting the central point of the lens mount of the binocular 3D fisheye camera is disclosed, the central points of the lens mount and the image sensor can be overlapped as much as possible before the lens carries out image calibration, so that the waste of effective pixels of the image sensor can be avoided as much as possible, the utilization rate of the image sensor is improved, and the cost is reduced.

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 a schematic structural view of the present invention;

FIG. 2 is a schematic view of a lens module according to the present invention;

wherein, 1 is a testing frame, 2 is a testing card, 3 is a limiting piece, and 4 is a lens module.

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.

The embodiment of the utility model discloses a device for correcting the center point of a lens mount of a binocular 3D fisheye camera, which comprises a test frame 1, a test card 2, a limiting piece 3 and a test card fixing piece, wherein the test frame 1 is provided with a plurality of test holes; the lens module 4 is fixed on the acrylic panel of the test frame 1 through the limiting piece 3, and the test card 2 is fixed on the acrylic panel of the test frame 1 through the test card fixing piece; the fixing surface of the lens module 4 and the fixing surface of the test card 2 are perpendicular to the horizontal plane, and the physical center position of the lens module 4 is coincided with the center point of the cross line of the test card 2.

Further, the test jig 1 is a U-shaped structure, and the test jig 1 is made of an acrylic material.

Further, the lens module 4 includes two lenses, as shown in fig. 2, and a screw locking module and a spring rebounding module are respectively disposed on the lens mount.

The left lens mount and the right lens mount are respectively provided with a screw locking device for adjusting the horizontal direction and the vertical direction, and the position of the lens mount can be finely adjusted by screwing or unscrewing. The image of the lens module can be output to a display through a matched camera main board, and an auxiliary line is added to the central part of the image so as to mark the central point position and the maximum error range of the image. When the auxiliary line and the image acquired from the lens by the actual image sensor are superimposed, the relative position of the center point of the actual picture on the auxiliary line can be seen. When the center point of the picture is within the error range of the auxiliary line, the screw on the lens mount can be screwed down, and the position is fixed, namely the center point of the lens is aligned with the cross line of the test card, so that the center points of the lens mount and the image sensor can be coincided.

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 device disclosed in the embodiment corresponds to the method disclosed in the embodiment, so that the description is simple, and the relevant points can be referred to the description of the method part.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for correcting the center point of a lens mount of a binocular 3D fisheye camera is characterized by comprising a test frame, a test card, a limiting piece and a test card fixing piece; the lens module is fixed on the acrylic panel of the test frame through the limiting piece, and the test card is fixed on the acrylic panel of the test frame through the test card fixing piece; the fixing surface of the lens module and the fixing surface of the test card are perpendicular to the horizontal plane, and the physical center position of the lens module is coincident with the center point of the cross line of the test card.

2. The apparatus of claim 1, wherein the test frame is U-shaped.

3. The apparatus of claim 1, wherein the lens module comprises two lenses, and the lens mount is respectively provided with a screw locking module and a spring rebound module.

4. The apparatus of claim 3, wherein the screw locking module is configured to fix a position of the lens mount when the lens mount is aligned with the image sensor center point.

5. The apparatus of claim 1, wherein the test frame is an acrylic test frame.