Laser projection equipment

Abstract

The invention provides laser projection equipment which comprises a first light combining module and a light splitting module. The first light combining module comprises a plurality of laser sources, a plurality of second laser sources and a first spectroscope. The plurality of laser sources are respectively used for transmitting first polarized light. The plurality of second laser sources are respectively used for transmitting second polarized light with polarity that is different from that of the first polarized light. The first spectroscope is arranged between the first laser sources and the second laser sources and comprises a first surface that opposes each first laser source and a second surface that opposes the second laser sources. The first surface reflects the first polarized light. The second polarized light penetrates through the second surface and the first surface and combines with the first polarized light for forming a first laser beam. The light splitting module is used for receiving the first laser beam for dividing the first laser beam to a plurality of beams of color light.

Description

technical field [0001] The present invention relates to a laser projection device, especially a laser projection that uses a beam splitter to reflect a first polarized light, but allows a second polarized light having a different polarization from the first polarized light to pass through to form a laser beam equipment. Background technique [0002] Generally speaking, common laser projection equipment adopts the configuration of light combining module and light splitting module to generate multiple color lights for subsequent projection and imaging. For the relevant configuration, please refer to figure 1 . figure 1 It is a schematic diagram of a laser projection device 10 in the prior art. Such as figure 1 As shown, the laser projection device 10 includes a light combining module 12, a light guide module 14, and a light splitting module 16, and the light combining module 12 includes a plurality of mirrors 18, a plurality of first laser light sources 20, and a plurality ...

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Problems solved by technology

[0005] However, as can be seen from the above, due to the fact that the multiple reflectors 18 must be arranged in a spaced manner with gaps between them and the multiple first laser light sources 20 must be aligned with the multiple reflectors 18 respectively and the multiple second laser light sources 22 must be aligned with each other. Respectively with a plurality of reflection mirrors 18 staggered restrictions, therefore, the gap between the reflection mirror 18 and the adjacent reflection mirror 18, the gap between the first laser light source 20 and the adjacent first laser light source 20, and the gap between the second laser light source 22 and the phase The gap adjacent to the second laser light source 22 cannot be reduced or eliminated, resulting in the problem that the overall size of the light-combining module 12 cannot be further reduced, which is not conducive to the miniaturization design of the laser projection device 10

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