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A Cylindrical Structured Light Projection Device Based on Panoramic Ring Projection Objective Lens

A technology of structured light projection and projection objective lens, which is applied in the field of projection optical systems, can solve problems such as crosstalk, high integration in extremely difficult panoramic spaces, and difficulty in synchronous use and integration. It achieves good imaging quality, superior thermal stability, and no The effect of splicing crosstalk

Active Publication Date: 2020-06-19
杭州环峻科技有限公司
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Problems solved by technology

However, the existing structured light projection technology can only project in a small field of view, and there will be strong crosstalk between independent structured light projection systems. Highly integrated structured light projection

Method used

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  • A Cylindrical Structured Light Projection Device Based on Panoramic Ring Projection Objective Lens
  • A Cylindrical Structured Light Projection Device Based on Panoramic Ring Projection Objective Lens
  • A Cylindrical Structured Light Projection Device Based on Panoramic Ring Projection Objective Lens

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] The present invention provides a cylindrical structured light projection device based on a panoramic annular projection objective lens, such as figure 1 As shown, it includes coaxially arranged projection light source, structured light emitting device, panoramic annular projection objective lens and image processor; the image processor maps the planar structured light pattern into an annular structured light pattern, and outputs it to the structured light emitting device display; the panoramic annular projection objective conforms to the law of cylindrical imaging, and projects cylindrical structured light; the projection mapping relationship is as follows figure 2 As shown, the flow chart of the structured light projection pattern preprocessing algorithm of the image processor is shown in image 3 shown.

[0027] In the pre...

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Abstract

The invention discloses a cylindrical structured light projection device based on a panoramic annular projection objective lens, which comprises a coaxially arranged projection light source, a structured light emitting device, a panoramic annular projection objective lens and an image processor; The structured light pattern is mapped into an annular structured light pattern, which is output to the structured light emitting device for display; the panoramic annular projection objective lens conforms to the cylindrical imaging law, and projects cylindrical structured light. The aberration balance mirror group arranged coaxially and The panoramic ring is composed of block-shaped unit mirror groups; the panoramic ring-band block-shaped unit mirror groups transform paraxial light into off-axis light with a large field of view. The invention can realize cylindrical panoramic structured light projection, significantly expands the projection range of structured light, effectively enhances the surface image characteristics of surrounding objects, and is beneficial to image matching and three-dimensional reconstruction encoding and decoding; at the same time, a single display module, a single The projection lens method avoids the crosstalk problem of multi-light source structured light projection. It has a simple structure, light weight and controllable cost.

Description

technical field [0001] The invention relates to a projection optical system in projection display technology, in particular to a cylindrical structured light projection device based on a panoramic annular projection objective lens. Background technique [0002] The three-dimensional information perception of objects is the basis of accurate spatial positioning and surface contour detection, and also constitutes the basic technology of machine vision. On the macro scale, common 3D sensing optical technologies are divided into passive and active. [0003] Passive 3D sensing technologies include multi-view stereo vision, estimating 3D information from motion information, estimating 3D information from texture information, estimating 3D information from shadow information, etc. Among them, multi-view stereo vision technology is the most commonly used. The multi-view stereo vision technology imitates the human eyes, and calculates the depth through the image parallax obtained by...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G03B15/02
Inventor 白剑黄潇王佳郑臻荣刘向东
Owner 杭州环峻科技有限公司
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