CN217333088U

CN217333088U - Collimator with built-in coaxial light

Info

Publication number: CN217333088U
Application number: CN202221248037.2U
Authority: CN
Inventors: 李文渊; 谢胜; 朱周德; 刘强生
Original assignee: Shenzhen Daoxian Technology Co ltd
Current assignee: Shenzhen Daoxian Technology Co ltd
Priority date: 2022-05-20
Filing date: 2022-05-20
Publication date: 2022-08-30
Anticipated expiration: 2032-05-20

Abstract

The utility model discloses a collimator of built-in coaxial light, this collimator butt joint is installed between optical module and camera body, collimator has the first lens cone and the second lens cone of coaxial butt joint, the first optical cavity of shaping in the first lens cone, form communicating second optical cavity in proper order in the second lens cone, third optical cavity and fourth optical cavity, it sets up optical lens to deviate from second lens cone one end in the first lens cone, optical lens becomes optical axis and the coaxial setting of first lens cone, radially set up on the second lens cone with the communicating light source entry of third optical cavity, the slant sets up beam splitter prism in the second optical cavity, the cover is served to keep away from the second lens cone of first lens cone one and is equipped with the focusing barrel that is used for rotating and adjusts the angle between focusing lens and sensing chip image planes alignment and light source and sensor. The focus of the optical module is conveniently, quickly and accurately aligned to be flush with the position of the sensing image surface, and the consistency of image quality is improved.

Description

Collimator with built-in coaxial light

Technical Field

The utility model relates to an optical shooting technical field specifically is a collimator of built-in coaxial light.

Background

A camera is a device that converts a light image of a scene into an electrical signal. The structure can be roughly divided into three parts: an optical system (mainly referred to as a lens), a photoelectric conversion system (mainly referred to as a camera tube or a solid-state imaging device), and a circuit system (mainly referred to as a video processing circuit).

In the field of aerial photography, because work is shot closely and is surpassed 3 meters beyond, there is the difference when the picture quality of people's eye observation reads data on the sensitization, the photo after a plurality of optical module combination gathers, it is obvious with the true object difference through the algorithm picture arragement back, its reason is mainly after through a plurality of optical module combinations, the angle and the optical axis focus after lens change light shift, so, the problem of optical module projection image quality uniformity needs to be solved urgently.

Based on this, the utility model designs a built-in coaxial light's collimator to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a collimator of built-in coaxial light to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: a collimator with built-in coaxial light is installed between an optical module and a camera body in a butt joint mode, the collimator is provided with a first lens barrel and a second lens barrel which are in coaxial butt joint, a first optical cavity is formed in the first lens barrel, a second optical cavity, a third optical cavity and a fourth optical cavity are formed in the second lens barrel and are communicated in sequence, an optical lens is arranged at one end, away from the second lens barrel, in the first lens barrel, an optical axis formed by the optical lens and the first lens barrel are arranged coaxially, a light source inlet communicated with the third optical cavity is formed in the second lens barrel in the radial direction, a light splitting prism is arranged in the second optical cavity in an inclined mode, and a focusing barrel used for adjusting the angle between an image surface and a sensor chip in an alignment mode and the angle between the light source and the sensor is sleeved on one end, away from the first lens barrel, of the second lens barrel in a rotating mode.

Preferably, the first lens barrel and the second lens barrel are coaxially arranged with the focusing barrel, and have the same outer diameter.

Preferably, the optical lens is clamped at the front end of the first optical cavity in the first lens barrel, and the optical lens is locked in the first lens barrel through a press ring in a screwing mode.

Preferably, the light source inlet axis is perpendicular to the third optical cavity axis.

Preferably, the beam splitter prism is installed in the third optical cavity at an inclination angle of 45 degrees with respect to the horizontal plane, and the inclined plane of the beam splitter prism receives the light source from the light source inlet.

Preferably, the inclined plane of the beam splitter prism is plated with a semi-transparent and semi-reflective film.

Preferably, the focusing barrel is sleeved with a connecting sleeve, the outer end face of the connecting sleeve is provided with threads for connecting and mounting the sensor, and the outer side of the other end of the connecting sleeve is provided with a screw hole.

Compared with the prior art, the beneficial effects of the utility model are that: the collimator is arranged between the optical module and the camera body, the optical lens is installed in the front end of the first lens barrel through the compression ring, an optical axis formed by the optical lens is kept to be overlapped with the axis of the first lens barrel, external parallel light is received to be incident into the first optical cavity, the second optical cavity and the third optical cavity through the optical lens, an external standard light source enters through a light source inlet and is projected through the beam splitter prism, so that the light angle changed by the optical lens is accurately focused on the central focus of the optical axis, the optical focus is adjusted to be aligned with the image surface of the sensing chip through the rotation of the focusing barrel, the angle between the light source and the sensor is adjusted, the purpose of conveniently, quickly and accurately aligning the focus of the optical module and the position of the image surface is achieved, and the consistency of the image quality is improved.

Drawings

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

Fig. 1 is a schematic view of the installation positions of a collimator with coaxial light inside, an optical module and a camera body according to the present invention;

fig. 2 is a schematic front sectional view of a collimator with a coaxial light inside according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

the optical module 1, the camera body 2, the first lens barrel 3, the second lens barrel 4, the first optical cavity 30, the second optical cavity 40, the third optical cavity 41, the fourth optical cavity 42, the optical lens 5, the press ring 6, the light source inlet 43, the focusing barrel 7, the connecting sleeve 8, the screw hole 80 and the beam splitter prism 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution:

specifically, a collimator with coaxial light inside, as shown in fig. 1, is installed between an optical module 1 and a camera body 2 in a butt joint manner.

Referring to fig. 2, the collimator has a first lens barrel 3 and a second lens barrel 4 which are coaxially butted with each other, a first optical cavity 30 is formed in the first lens barrel 3, a second optical cavity 40, a third optical cavity 41 and a fourth optical cavity 42 which are sequentially communicated with each other are formed in the second lens barrel 4, an optical lens 5 is arranged at one end of the first lens barrel 3, which is far away from the second lens barrel 4, an optical axis formed by the optical lens 5 is coaxially arranged with the first lens barrel 3, the optical lens 5 is clamped at the front end of the first optical cavity 30 in the first lens barrel 3, the optical lens 5 is locked in the first lens barrel 3 by a rotation of a press ring 6, the optical lens 5 is fixed, the optical axis formed by the optical lens 5 is kept to be overlapped with the axis of the first lens barrel 3, and external parallel light is received to enter the first optical cavity 30, the second optical cavity 40 and the third optical cavity 41 through the optical lens 5.

A light source inlet 43 communicated with the third light cavity 41 is radially arranged on the second lens barrel 4, the axis of the light source inlet 43 is vertical to the axis of the third light cavity 41, a beam splitter prism 9 is obliquely arranged in the second light cavity 40, the beam splitter prism 9 and the horizontal plane form an inclined angle of 45 degrees and are arranged in the third light cavity 41, the inclined plane of the beam splitter prism 9 is plated with a semi-transparent and semi-reflective film, the inclined plane of the beam splitter prism 9 receives a light source from the light source inlet 43, the diameter of the light source inlet 43 is preferably 8mm, natural light incident through the light source inlet 43 is incident on the inclined plane of the beam splitter prism 9, the focus is coincided with the central focus of the beam splitter prism 9, a focusing barrel 7 for rotatably adjusting the light focus to be aligned with the image plane of the sensing chip and the angle between the light source and the sensor is sleeved at one end of the second lens barrel 4 far away from the first lens barrel 3, the second lens barrel 4 and the focusing barrel 7 are coaxially arranged, and the external diameters are consistent, in addition, the adapter sleeve 8 is sleeved outside the focusing barrel 7, the outer end face of the adapter sleeve 8 is provided with threads for connecting and installing a sensor, and the outer side of the other end of the adapter sleeve 8 is provided with a screw hole 80, so that an external standard light source enters through a light source inlet 43 and is projected through a beam splitter prism 9, the light angle changed by an optical lens 5 is accurately focused on the central focus of an optical axis, the focusing barrel 7 rotates to adjust the alignment of the optical focus and the image surface of a sensing chip, the angle between the light source and the sensor is adjusted, the alignment of the focus of the optical module 1 and the position of the image surface of the sensing chip is conveniently, quickly and accurately realized, and the consistency of the image quality is improved.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A collimator tube with built-in coaxial light is characterized in that the collimator tube is installed between an optical module and a camera body in a butt joint mode, the collimator tube is provided with a first lens barrel and a second lens barrel which are in coaxial butt joint, a first optical cavity is formed in the first lens barrel, a second optical cavity, a third optical cavity and a fourth optical cavity which are communicated in sequence are formed in the second lens barrel, an optical lens is arranged at one end, away from the second lens barrel, in the first lens barrel, of the second lens barrel, an optical axis formed by the optical lens is arranged coaxially with the first lens barrel, a light source inlet communicated with the third optical cavity is formed in the second lens barrel in the radial direction, a light splitting prism is obliquely arranged in the second optical cavity, and a focusing barrel used for rotatably adjusting an optical focus to be aligned with an image surface of a sensing chip and an angle between the light source and a sensor is sleeved at one end, away from the first lens barrel.

2. The collimator of claim 1, wherein: the first lens cone, the second lens cone and the focusing cylinder are coaxially arranged, and the outer diameters of the first lens cone and the second lens cone are consistent.

3. The collimator of claim 1, wherein: the optical lens is clamped at the front end of the first optical cavity in the first lens barrel, and the optical lens is locked in the first lens barrel through the pressing ring in a screwing mode.

4. The collimator of claim 1, wherein: the light source inlet axis is perpendicular to the third optical cavity axis.

5. The collimator of claim 4, wherein: the beam splitter prism and the horizontal plane form an inclined angle of 45 degrees and are arranged in the third light cavity, and the inclined plane of the beam splitter prism receives a light source from the light source inlet.

6. The collimator of claim 5, wherein: the inclined plane of the beam splitter prism is plated with a semi-transparent and semi-reflective film.

7. The collimator as claimed in any one of claims 1-6, wherein: the focusing barrel is sleeved with a connecting sleeve, the outer end face of the connecting sleeve is provided with threads for connecting and mounting a sensor, and the outer side of the other end of the connecting sleeve is provided with a screw hole.