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Calibration board and calibration device for integrated calibration of multi-type TOF camera modules

A camera module and calibration device technology, applied in image analysis, image data processing, instruments, etc., can solve the problems of low utilization rate of equipment, small application range, low calibration efficiency, etc., achieve wide application range, improve calibration efficiency, The effect of increasing equipment utilization

Pending Publication Date: 2022-07-01
ZHEJIANG SUNNY INTELLIGENT OPTICAL TECH CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the prior art, there is a singleness in the LED light source calibration board, and one calibration board can only be used to calibrate TOF camera modules of the same type (such as the field of view FOV and the same light source wavelength), resulting in low calibration efficiency and equipment Low utilization rate and small scope of application

Method used

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  • Calibration board and calibration device for integrated calibration of multi-type TOF camera modules
  • Calibration board and calibration device for integrated calibration of multi-type TOF camera modules
  • Calibration board and calibration device for integrated calibration of multi-type TOF camera modules

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Embodiment Construction

[0046]The following description serves to disclose the application to enable those skilled in the art to practice the application. The embodiments described below are by way of example only, and other obvious modifications will occur to those skilled in the art. The basic principles of the present application defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions without departing from the spirit and scope of the present application.

[0047] Application overview

[0048] At present, there are various types of TOF camera modules in the market. Different types of TOF camera modules have different angles such as FOV or different light source wavelengths. Therefore, different types of TOF camera modules need to correspond to different LED light source wavelengths and arrays in the calibration board. Arrange and complete the calibration.

[0049] However, in the prior art, the LED light sou...

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Abstract

The invention discloses a calibration board and a calibration device for integrated calibration of a multi-type TOF camera module. The calibration board comprises a circuit board; the light-emitting units can be installed on the circuit board in an electric conduction mode, and the light-emitting units are arranged on the circuit board in an array mode; the cover plate is arranged above the plurality of light-emitting units, the cover plate is provided with a plurality of light-limiting through holes penetrating through the cover plate, and the plurality of light-limiting through holes correspond to the plurality of light-emitting units respectively so that each light-emitting unit can form a point light source through the light-limiting through holes. The plurality of light-emitting units form an area light source, the plurality of light-emitting units comprise a first preset number of first light-emitting units and a second preset number of second light-emitting units, and the first preset number of first light-emitting units and the second preset number of second light-emitting units are alternately arranged in a preset mode.

Description

technical field [0001] The present application relates to the technical field of TOF camera modules, and in particular, to a calibration board and a calibration device for integrated calibration of multiple types of TOF camera modules. Background technique [0002] TOF (Time of Flihgt) is a technology based on time of flight. The TOF camera module (or TOF camera) generally emits modulated near-infrared light through a sensor (such as a Vcsel laser sensor, etc.), and is received by the sensor after being reflected by the object, and then calculates the time difference or phase difference between light emission and reflection, to convert the distance of the object to be photographed to generate depth information. [0003] In practical applications, the calibration of TOF camera module is one of the important tasks to ensure that its technical parameters meet the standards. Therefore, in the process of TOF camera module calibration, it is necessary to use a calibration board (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/80
CPCG06T7/80G06T2207/10016
Inventor 陈瑞健韩华清聂成林汪小耀
Owner ZHEJIANG SUNNY INTELLIGENT OPTICAL TECH CO LTD
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