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Structured light emitting module and image acquisition device

A structured light and module technology, applied in the field of 3D imaging, can solve problems affecting detection results, offset, etc.

Pending Publication Date: 2021-05-21
TRIPLE WIN TECHSHENZHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, during the detection process, the structured light device will inevitably move. For example, when a hand-held structured light device is used for detection, since the arm cannot be guaranteed to be completely stationary, the structured light device will be displaced, and the displacement of the structured light device will cause its output. The position where the structured light is irradiated on the object to be tested is shifted relative to the specific position, thus affecting the detection result

Method used

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  • Structured light emitting module and image acquisition device
  • Structured light emitting module and image acquisition device
  • Structured light emitting module and image acquisition device

Examples

Experimental program
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Embodiment 1

[0024] see figure 1 , the image acquisition device 10 provided in this embodiment is used to measure a three-dimensional image of the object 400 to be tested, and can be applied to fields such as 3D scanning and face recognition. The image acquisition device 10 can be a smart phone, a camera, a smart door lock and other devices.

[0025] read on figure 1 , the image acquisition device 10 provided in this embodiment includes a structured light emitting module 100 , a sensor module 200 and an image processing module 300 . The structured light emitting module 100 is used for emitting structured light. The structured light is irradiated on the object under test 400 and reflected by the object under test 400. The sensor module 200 is used to receive the structured light reflected by the object under test 400, and generate a structured light image according to the reflected structured light. The sensor module 200 can be, for example, a Charge Coupled Device (CCD) or a Complementa...

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Abstract

The invention provides a structured light emitting module, which is used for emitting structured light to an object to be detected. The structured light emitting module comprises: a light emitting element used for emitting light source light; the light modulator that is arranged on an emitting path of the light source light and is used for modulating the light source light to obtain structured light and emitting the structured light; lens, of which the structured light is emitted from; the lens control assembly that is used for driving the lens to move synchronously according to the current motion information of the structured light emitting module, so that the structured light is emitted to a preset position of the to-be-detected object; and the controller that is electrically connected with the light-emitting element and the light modulator, and is used for controlling the light-emitting element to emit light source light and controlling the light modulator to modulate the light source light. The invention also provides an image acquisition device.

Description

technical field [0001] The invention relates to the technical field of 3D imaging, in particular to a structured light emitting module and an image acquisition device using the structured light emitting module. Background technique [0002] In the existing 3D visual structured light device, if the measurement of depth information is realized, the structured light carrying a specific optical pattern (such as laser speckle) needs to be projected onto the surface of the object to be measured, because the light source in the structured light device The beam emitted by itself does not carry a specific optical pattern, so diffractive optical elements (Diffractive Optical Elements, DOE) are often used to scatter the beam emitted by the light source so that the beam has a specific optical pattern. [0003] On the one hand, since the diffractive optical element is based on the principle of light diffraction, using computer-aided design and semiconductor chip manufacturing process, a ...

Claims

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Application Information

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IPC IPC(8): G06K9/20G06T15/00G03B15/05
CPCG06T15/005G03B15/05G06V10/143H04N13/254H04N13/271G01B11/2513H04N23/56H04N13/204G02B26/0833G02B5/003H04N23/55H04N23/75
Inventor 黄俊耀林政安
Owner TRIPLE WIN TECHSHENZHEN CO LTD
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