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High-precision large-view optical measurement device and detection system

A technology of optical measurement and large field of view, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of small pixel size and high frame rate of cameras

Pending Publication Date: 2021-05-11
TZTEK TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The expansion of the field of view means the increase of the target surface of the camera. At the same time, it is necessary to ensure that the pixel size is small and the frame rate of the camera is high. A single camera cannot meet the above requirements.

Method used

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  • High-precision large-view optical measurement device and detection system
  • High-precision large-view optical measurement device and detection system
  • High-precision large-view optical measurement device and detection system

Examples

Experimental program
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Effect test

no. 1 example

[0022] A zoom lens with an optical magnification of 0.7-4.5 times, supports a maximum of 2 / 3" camera, the interface is C-mount, the field of view at the minimum magnification must meet ≥10mm×10mm, and the pixel resolution is ≤4um. The field of view is divided by a beam splitter It is divided into two image planes, and two cameras are installed on two image square spaces to cover the entire field of view to achieve the purpose. Specifically, see figure 1 , an optical measuring device (a dotted frame in the figure) and a schematic diagram of the system, the light source 1 adopts a diffuse light source, the stage 2 is a glass stage, the multi-port lens 3 adopts a dual-port variable magnification lens, and the beam splitting component adopts a beam splitter 4, so The above-mentioned camera group adopts two cameras (the first camera 51 and the second camera 52), and the large field of view is two spliced ​​"day"-shaped rectangular fields of view.

[0023] 1. Camera description:

...

no. 2 example

[0033] A three-port telecentric lens 3 with an optical magnification of 0.5 times supports full-frame cameras at most. The field of view is divided into four image planes by three beam-splitting prisms, and four low-cost high-resolution High-efficiency cameras cover the entire field of view, achieving a large field of view of 50mm×33mm, and achieving the goal of high resolution and low cost. Specifically, see image 3 , Schematic diagram of the optical measurement device (dashed box in the figure) and the system. The light source adopts a telecentric light source, the stage 2 is a glass stage, and the multi-port lens 3 adopts a single-magnification four-port telecentric lens. and the third dichroic prism 43), the camera group adopts four cameras (the first camera 51, the second camera 52, the third camera 53, the fourth camera 54), and the large field of view is four spliced ​​"field" shaped rectangles vision.

[0034] 1. Camera description:

[0035] 1”, pixel 5472x3648, f...

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Abstract

The invention discloses a high-precision large-view optical measurement device and a detection system. The optical measurement device comprises a light source, a carrying table, a multi-port lens, a light splitting assembly and a camera group. The detection system includes an optical measurement device, a processor, a memory, and a display. Through the optical scheme design that the high-magnification multi-port lens is configured with the high-resolution and high-frame-rate camera, the purpose of high-precision large-view measurement is achieved in combination with multi-camera regional calibration. The technical scheme is easy to implement, is free of a moving part, ensures the stability of detection or measurement, is low in overall cost, achieves the purpose of high-precision large-view measurement and detection, and is convenient to popularize and apply.

Description

technical field [0001] The invention relates to optical imaging or quantity detection technology, in particular to a high-precision large-field optical measurement device and a detection system. Background technique [0002] Optical measurement equipment (imager) is one of the most widely used precision measurement methods at present. With the rapid development of science and technology, not only high measurement accuracy is required, but also measurement efficiency must be improved. Therefore, high precision and large field of view are one of the most important aspects of precision measurement technology a development trend. The expansion of the field of view means the increase of the target surface of the camera. At the same time, it is necessary to ensure the small pixel size and high frame rate of the camera. A single camera cannot meet the above requirements. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the purpose of the...

Claims

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Application Information

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IPC IPC(8): G01B11/00
CPCG01B11/00
Inventor 王志伟朱小琴李祥袁春辉曹葵康蔡雄飞
Owner TZTEK TECH