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Light homogenizing sheet and TOF module

A dodging film and module technology, applied in optics, optical components, lenses, etc., can solve problems such as poor dodging effect, achieve the effects of improving utilization rate, reducing occupation angle, and improving dodging efficiency

Pending Publication Date: 2020-10-30
宁波舜宇奥来技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to provide a dodging sheet and a TOF module to solve the problem of poor dodging effect of the dodging sheet in the prior art

Method used

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  • Light homogenizing sheet and TOF module
  • Light homogenizing sheet and TOF module
  • Light homogenizing sheet and TOF module

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Embodiment Construction

[0027] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs.

[0029] In the present invention, unless stated otherwise, the used orientation words such as "upper, lower, top, bottom" are usually for the directions shown in the drawings, or for the parts themselves in the vertical, In terms of vertical or gravitational direction; similarly, for the convenience of understanding and description, "inner and outer" refer to the inner and outer relative to the outline of each component itself, but the above orientation words ...

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Abstract

The invention provides a light homogenizing sheet and a TOF module. The light homogenizing sheet comprises a substrate layer, a microstructure layer and a collimating mirror layer. The microstructurelayer is connected to the surface of one side of the substrate layer, the surface of the side, away from the substrate layer, of the microstructure layer is provided with a microstructure area, and the microstructure area is provided with a plurality of micro lenses. The collimating mirror layer is connected to the surface of the side, away from the substrate layer, of the microstructure layer, araised collimating mirror is arranged on the surface of the side, away from the microstructure layer, of the collimating mirror layer, and the projection of the collimating mirror to the microstructure layer coincides with at least one part of the microstructure area. According to the invention, the problem of poor light homogenizing effect of a light homogenizing sheet in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of optical imaging equipment, in particular to a dodging sheet and a TOF module. Background technique [0002] With the rapid development of the optical industry, the functions of 3D sensing systems are becoming more and more powerful, which has become a major industry trend in the next few years. The TOF lens module has more and more applications in the current face recognition and three-dimensional detection technology, and its projection end is generally composed of a VCSEL light source chip and a dodging film. The traditional dodging sheet generally includes two layers, the base layer and the microstructure layer, which can realize the diffusion effect of the VCSEL light source. The light emitted by the VCSEL light source chip generally has a divergence angle of about 28°. After passing through the non-collimated layer uniform light sheet, the area with higher intensity in the center of the outgoing lig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B3/00G02B27/09
CPCG02B3/0043G02B27/0961G02B27/0916
Inventor 吴沣原明玉生魏明贵孙理斌汪杰陈远
Owner 宁波舜宇奥来技术有限公司
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