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Laser projection device

A projection device and laser projection technology, applied in the laser field, can solve the problems of not being wearable by the human body, bulky, high cost of dual-machine equipment, etc., and achieve the effects of multiple functions, simplified structure, and high work efficiency

Inactive Publication Date: 2018-11-23
GOERTEK OPTICAL TECH CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

However, its dual-machine equipment is expensive and bulky, and cannot be used for human body wear

Method used

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  • Laser projection device

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Embodiment Construction

[0026] In order to explain the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and drawings. Similar components in the drawings are denoted by the same reference numerals. Those skilled in the art should understand that the content described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.

[0027] Such as figure 1 As shown, a laser projection device disclosed in the present invention includes: a dual-frequency laser module 2, a controller 1, a polarizer 3, a beam splitting unit 4, a first imaging module 7 and a second imaging module 8. The dual-frequency laser module 2 can emit laser beams of different frequencies. After the laser beam passes through the polarizer 3, it becomes a mixed beam of different frequencies composed of the first polarized light and the second polarized light whose polarization directions are perpendicular to e...

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Abstract

The invention discloses a laser projection device which comprises a dual-frequency laser module, a controller, a beam splitting unit, a first imaging module and a second imaging module. The dual-frequency laser module emits a laser beam having a first frequency and a laser beam having a second frequency. A polarizer generates first polarized light and second polarized light from the laser having the first frequency and the laser having the second frequency respectively. The beam splitting unit splits an incident laser beam into the first polarized light propagated along a first optical path and second polarized light propagated along a second optical path vertical to the first optical path. The first imaging module projects a first image onto a screen based on the first polarized light. The second imaging module projects a second image onto the same screen based on the second polarized light to form a 3D image. The laser projection device is beneficial to the miniaturized and modular development of projectors, is suitable for the wearable field, and can achieve 3D projection unlimited to a specific site. In addition, in the case where 3D projection is not required, the laser projection device can switch an operating mode freely to realize 2D projection, has various functions and enhances user experience.

Description

Technical field [0001] The invention relates to the field of laser technology. More specifically, it relates to a laser projection device. Background technique [0002] With the development of VR and AR technologies, 3D imaging technology has become more and more popular. At present, the most common 3D on the market is cinema 3D. The principle is to use two projectors to project light beams whose polarization directions are perpendicular to each other. Polarized glasses (3D glasses) to watch. However, its dual-machine equipment is expensive and bulky, and cannot be used for human wear. [0003] Therefore, there is a need to provide a laser projection device. Summary of the invention [0004] The purpose of the present invention is to provide a miniature 3D laser projection device using dual-frequency laser as the light source. A single light source can form the characteristics of two beams of light whose polarization directions are perpendicular to each other, which is conducive ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/26G03B35/20G03B35/26G02B30/25
CPCG03B35/20G03B35/26G02B30/25
Inventor 丁卫涛
Owner GOERTEK OPTICAL TECH CO LTD
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