CN-122015642-A - Double-light-path detection device and method for optical element gluing

CN122015642ACN 122015642 ACN122015642 ACN 122015642ACN-122015642-A

Abstract

The invention discloses a double-light path detection device and a double-light path detection method for optical element gluing. The optical signal of the tested glued optical element is received by the common objective lens and has bidirectional imaging capability, the optical signal is split into two different light paths by the beam splitting prism, the parallel light reflected by the plane is converged by the collimation module to detect space information, the spherical wave reflected by the spherical surface is converted into parallel light by the second path of optical signal and is converged to carry out amplification imaging by the micro module, and the translational position information is detected. The invention realizes the integration of the collimation detection and microscopic detection systems through the bidirectional imaging capability of the shared objective lens, can synchronously acquire the spatial position information and the translational position information of the tested glued optical element, improves the production efficiency and the data consistency, and solves the problem that the detection needs to be switched among a plurality of devices during the production adjustment of the traditional method.

Inventors

Lan Wankun
PAN SHIYUE
ZOU ZHIYUAN

Assignees

丹阳丹耀光学股份有限公司

Dates

Publication Date: 20260512
Application Date: 20251231

Claims (7)

1. A dual optical path inspection apparatus for optical component bonding, comprising: the optical system comprises a shared objective lens, a beam splitter prism, a first optical signal processing component and a second optical signal processing component; the common objective lens is used for receiving the optical signals reflected by the optical element to be glued; the beam splitting prism is optically connected with the common objective lens and is used for splitting the optical signal received by the common objective lens into a first path of optical signal and a second path of optical signal which are independent, so as to realize double-light path contrast detection; the first optical signal processing component is optically connected with the beam splitting prism and is used for receiving the first path of optical signals and detecting first type position parameters of optical elements to be glued; the second optical signal processing component is optically connected with the beam splitting prism and is used for receiving the second path of optical signals and detecting second type position parameters of the optical element to be glued.
2. The dual optical path inspection apparatus for optical component bonding according to claim 1, wherein the first optical processing assembly comprises a collimating eyepiece, a reticle, and a first imaging unit, which are optically connected in sequence, and the first imaging unit is configured to receive the first optical signal after the collimating eyepiece and the reticle are processed.
3. A dual optical path inspection apparatus for optical component bonding according to claim 2, wherein the first imaging unit is a CCD imaging unit.
4. The dual optical path inspection apparatus for optical component bonding according to claim 1, wherein the second optical processing assembly comprises a tube mirror and a second imaging unit optically connected in sequence, the second imaging unit being configured to receive the second optical signal processed by the tube mirror.
5. The dual light path inspection device for optical component bonding as set forth in claim 4, wherein the second imaging unit is a microscopic CCD imaging unit.
6. The device according to claim 1, wherein the first type of position parameter is spatial position information of the optical element to be glued, including three-dimensional coordinate information and/or tilt angle information, and the second type of position parameter is translational position information of the optical element to be glued, including translational deviation information in an XY plane.
7. The method for detecting a double optical path detecting apparatus for optical element bonding according to any one of claims 1 to 6, comprising the steps of: S1, placing a tested glued optical element on the object side of the common objective lens; s2, receiving the optical signal reflected by the tested glued optical element through the common objective lens; S3, splitting the optical signal into the collimation module and the microscopic module through the beam splitting prism; s4, acquiring spatial position information of the gluing optical element to be tested through the collimation module, and acquiring translational position information of the gluing optical element to be tested through the microscopic module; s5, synchronously outputting the space position information and the translation position information to complete integrated detection; The spatial position information comprises the inclination angle and the spatial posture of the gluing optical element to be tested, and the translational position information comprises the position change of the surface of the gluing optical element to be tested.

Description

Double-light-path detection device and method for optical element gluing Technical Field The invention relates to the technical field of optical detection, in particular to a double-light-path detection device and method for optical element gluing. Background The glued optical element is a composite optical element formed by bonding two or more optical elements through optical cement, and is widely applied to optical instruments such as camera lenses, telescopes, microscopes and the like. In the production process of glued optical elements, accurate detection of the spatial position (e.g. tilt angle, spatial attitude) and translational position (e.g. position change) of the optical element is required to ensure that the product quality meets the design requirements. Currently, the spatial position detection and translational position detection of glued optical elements generally require the use of two separate systems, a collimation system for detecting the spatial position information and a microscopy system for detecting the translational position information. However, the prior art has the following drawbacks: firstly, two sets of detecting systems work independently, gluing production personnel need to switch among different devices, the production flow is tedious, the efficiency is low, synchronous detection cannot be realized, and the consistency of data is difficult to guarantee. Secondly, the traditional objective lens can only realize unidirectional high-quality imaging, and the collimating system and the microscopic system are required to be respectively provided with special objective lenses and cannot be shared, so that the cost of the device and the complexity of the system are increased. Accordingly, there is a need in the art for a dual optical path optical element gluing device that is capable of simultaneously detecting spatial position information and translational position information of a glued optical element. Disclosure of Invention The invention aims to overcome the defects of the prior art, and provides a double-light-path detection device and a detection method for optical element gluing, which realize synchronous detection of spatial position information and translational position information through innovative optical system design. In order to achieve the above purpose, the invention adopts the following technical scheme: the invention provides a double-light path detection device for optical element gluing, which comprises: the optical system comprises a shared objective lens, a beam splitter prism, a first optical signal processing component and a second optical signal processing component; the common objective lens is used for receiving the optical signals reflected by the optical element to be glued; the beam splitting prism is optically connected with the common objective lens and is used for splitting the optical signal received by the common objective lens into a first path of optical signal and a second path of optical signal which are independent, so as to realize double-light path contrast detection; the first optical signal processing component is optically connected with the beam splitting prism and is used for receiving the first path of optical signals and detecting first type position parameters of optical elements to be glued; the second optical signal processing component is optically connected with the beam splitting prism and is used for receiving the second path of optical signals and detecting second type position parameters of the optical element to be glued. The first light processing assembly comprises a collimating eyepiece, a reticle and a first imaging unit which are sequentially and optically connected, and the first imaging unit is used for receiving a first path of light signals processed by the collimating eyepiece and the reticle. The first imaging unit is a CCD imaging unit. The second light processing assembly comprises a tube mirror and a second imaging unit which are sequentially and optically connected, and the second imaging unit is used for receiving a second path of light signals processed by the tube mirror. The second imaging unit is a microscopic CCD imaging unit. The first type of position parameters are spatial position information of the optical element to be glued and comprise three-dimensional coordinate information and/or inclination angle information, and the second type of position parameters are translational position information of the optical element to be glued and comprise translational deviation information in an XY plane. The invention also provides a detection method of the double-light-path detection device, which comprises the following steps: S1, placing a tested glued optical element on the object side of the common objective lens; s2, receiving the optical signal reflected by the tested glued optical element through the common objective lens; s3, splitting the optical signals to the collimation module and the microsc