Optical test device
A technology of optical testing and equipment, which is applied in the field of optical testing, can solve problems such as excessive deflection angles of projected patterns and affect depth calculations, and achieve the effect of avoiding missing depth values and solving deflection
Active Publication Date: 2019-08-16
SHENZHEN ORBBEC CO LTD
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Problems solved by technology
[0004] The purpose of the present invention is to provide an optical testing device, aiming to solve the technical problem that the depth calculation is affected when the deflection angle of the projection pattern of the existing projection module is too large
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[0032] The present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings, so as to better understand the present invention, but the following embodiments do not limit the scope of the present invention. In addition, it should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and only the components related to the present invention are shown in the drawings rather than the number of components, Shape and size drawing, the shape, quantity and proportion of each component can be changed arbitrarily during actual implementation, and the layout of the components may also be more complicated.
[0033] It should be noted that when an element is referred to as being “fixed” or “disposed on” another element, it may be directly on the other element or be indirectly on the other element. When an element is referred to as being "co...
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The invention is applied to the technical field of optical test, and provides an optical test device. The optical test device comprises a projection screen, a projection module to be tested, a camera,a deflection angle adjusting element and a controller; the projection module to be tested includes a light source and a diffractive optical element; the light source is used for emitting a patternedbeam, and the diffractive optical element is used for receiving the patterned beam and projecting a structured light pattern; the camera is used for collecting the structured light pattern; the deflection angle adjusting element is used for adjusting a deflection angle of the diffractive optical element; and the controller is connected to the projection module to be tested, the camera and the deflection angle adjusting element separately, used for receiving and processing the structured light pattern, and determining whether the deflection angle of the structured light pattern is within a preset range; and when the deflection angle of the structured light pattern is not within the preset range, the controller is further used for controlling the deflection angle adjusting element to adjustthe deflection angle of the diffractive optical element; therefore, the deflection of the structured light pattern due to the deflection of the diffractive optical element is effectively solved, and the problem of missing depth values in the subsequently collected structured light pattern is avoided.
Description
technical field [0001] The invention relates to the technical field of optical testing, in particular to an optical testing device. Background technique [0002] At present, optical modules are widely used in mobile phones, robots and various intelligent vision hardware markets, etc., which mainly include infrared modules, RGB modules and projection modules. These optical modules must pass a series of strict performance tests before they are put into the market, such as testing the optical power, wavelength, and speckle quality of the infrared structured light projection module. The qualified optical modules can be screened out through the output results of these tests. mod. [0003] However, there are few records in the prior art about optical testing equipment for testing whether the projected pattern is deflected. However, it can be understood that once the projected pattern is deflected beyond a certain angle, it will affect the depth calculation of the subsequently col...
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IPC IPC(8): G01M11/02
CPCG01M11/0264
Inventor 陈醒身许星黄源浩
Owner SHENZHEN ORBBEC CO LTD