Light-transmitting cover plate and optical device

A light-transmitting cover and cover technology, applied in the optical field, can solve the problems of high price, expensive light source modules, and large light loss, and achieve the effects of improving light efficiency, reducing costs, and reducing power consumption of the whole machine

Inactive Publication Date: 2020-06-26
HANGZHOU GUANGPO INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This way of implementation, from an optical point of view, the light first passes through the diffuser, the transmittance is about 85%, and then passes through the laser transparent cover, the light efficiency is also about 85%, so the light i

Method used

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  • Light-transmitting cover plate and optical device
  • Light-transmitting cover plate and optical device
  • Light-transmitting cover plate and optical device

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0038] Example 1

[0039] Such as figure 2 As shown, in this embodiment, the micro lens unit adopts an implementation manner in which the micro lens unit is arranged in a one-dimensional plane. In order to form a rectangular light spot, the shape of the micro lens unit is roughly rectangular.

[0040] The micro lens unit of this embodiment includes: a first micro lens 1 and a second micro lens 2.

[0041] Wherein, the first microlens 1 is distributed on the peripheral side of the second microlens 2, that is, the first microlens 1 is continuously arranged around the second microlens 2 described above. The edge of the first microlens 1 and the edge of the second microlens 2 are smoothly connected. Since the shape of the microlens unit of this embodiment is roughly rectangular, the first microlens 1 located on the peripheral side of the second microlens 2 is correspondingly arranged in a rectangular ring structure.

[0042] The above-mentioned first microlens 1 of the rectangular ring...

Example Embodiment

[0045] Example 2

[0046] In this embodiment, the micro lens unit adopts an implementation manner in which the micro lens unit is arranged in a one-dimensional plane. In order to form a pentagonal light spot, the shape of the micro lens unit is roughly a pentagon.

[0047] The micro lens unit of this embodiment includes: a first micro lens and a second micro lens.

[0048] Wherein, the first microlens is distributed on the peripheral side of the second microlens, that is, the first microlens is continuously arranged around the second microlens. The edge of the first microlens and the edge of the second microlens are smoothly connected. Since the shape of the micro lens unit of this embodiment is approximately a pentagon, the first micro lens located on the peripheral side of the second micro lens is correspondingly arranged in a pentagon ring structure.

[0049] The first microlens of the above-mentioned pentagonal ring structure includes a plurality of arcuate curved surfaces, and ...

Example Embodiment

[0051] Example 3

[0052] Such as Image 6 As shown, in this embodiment, the micro lens unit adopts an implementation manner in which the micro lens unit is spatially arranged in planes of different dimensions. Specifically, it is an embodiment in which a plurality of micro lens units are respectively distributed in different spatial dimensions. In order to form a rectangular light spot, the shape of any microlens unit is roughly rectangular.

[0053] The micro lens unit of this embodiment includes: a first micro lens 1 and a second micro lens 2. Wherein, the first microlens 1 is distributed at a local position on the peripheral side of the second microlens 2, and the edge of the first microlens 1 and the edge of the second microlens 2 are smoothly connected.

[0054] In one embodiment, there are two microlens units in this embodiment, and the two microlens units are arranged in a layered manner. The layered arrangement referred to here includes: two microlens units close to each o...

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Abstract

The invention provides a light-transmitting cover plate and an optical device, the light-transmitting cover plate comprises a cover plate body and a light homogenizing structure formed on the cover plate body, and the light homogenizing structure is integrally formed on the cover plate body; the light homogenizing structure is composed of at least one micro lens unit, and each micro lens unit comprises a first micro lens and a second micro lens. The cover plate body and the light homogenizing structure are integrally arranged, so that the light source module is simplified into the laser bare chips, the cost is greatly reduced, the size of the light source module is far larger than that of the laser bare chips, and under the high-power requirement, the number of light sources is increased,and a large amount of PCB layout space is saved for bare chip arrangement compared with light source module arrangement. Besides, only the processing cost of the laser cover plate is needed, the structural function requirement of the cover plate can be met, the optical function of the dodging sheet can be achieved, more importantly, the light source only needs to be transmitted once through the optical lens, the lighting effect is obviously improved, and the power consumption of the whole machine is reduced.

Description

technical field [0001] The invention relates to the field of optical technology, in particular to a light-transmitting cover plate and an optical device. Background technique [0002] The current laser ranging equipment, such as a tof camera, includes a laser module and a laser transparent cover at the light source transmitting end. The laser module is packaged by a laser die and a diffuser (diffuser), which mainly realizes the lighting requirements required for laser testing. The illumination beam emitted by the laser module passes through the laser transparent cover to project an illumination spot. This way of implementation, from an optical point of view, the light first passes through the diffuser, the transmittance is about 85%, and then passes through the laser transparent cover, the light efficiency is also about 85%, so the light is transmitted twice, and the light loss is relatively large. From the perspective of cost, most of the dodging films use American RPC co...

Claims

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Application Information

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IPC IPC(8): G02B3/00G02B27/09G01S17/48G01S7/481
CPCG02B3/0006G02B3/0037G02B27/0961G01S17/48G01S7/481
Inventor 邹自立陈文华张合勇陈嵩白云峰
Owner HANGZHOU GUANGPO INTELLIGENT TECH CO LTD
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