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Total reflection type fluorescent wheel projection device and projection method

A technology of total reflection and projection devices, applied in projection devices, optics, optical components, etc., can solve the problems of optical lenses occupying too much space, and achieve the effects of saving quantity, simple structure and convenient use

Pending Publication Date: 2017-04-05
中航国画(上海)激光显示科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the prior art, the laser projector of the traditional fluorescent wheel method uses part of the blue light to pass through and the other part to obtain yellow light and green light by means of reflective fluorescence. This method in the prior art requires a set of collimation devices to collimate The direct laser emits yellow light and green light, and another set of collimation device collimates the blue laser light passing through the fluorescent wheel, so this method uses more optical lenses and takes up a lot of space

Method used

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  • Total reflection type fluorescent wheel projection device and projection method
  • Total reflection type fluorescent wheel projection device and projection method
  • Total reflection type fluorescent wheel projection device and projection method

Examples

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Effect test

Embodiment 1

[0013] Embodiment 1: as figure 2 As shown, the projection method of the total reflection fluorescent wheel projection device of the present invention is as follows: the laser 4 emits blue laser light and passes through the Glan-Foucault prism 5 horizontally, after passing through the 1 / 4λ wave plate 6, the polarization direction is deflected by 45 degrees, and all the light is transmitted The lower beam splitter 7 is focused by the first lens 8 and the second lens 9, and is incident on the total reflection fluorescent wheel 10. During one rotation period of the total reflection fluorescent wheel 10, part of it is absorbed by the first lens of the total reflection fluorescent wheel 10. The phosphor powder 1 and the phosphor powder 2 of the second segment emit yellow light and green light, which are collimated by the first lens 8 and the second lens 9 in the reverse direction, and deflected by 90 degrees after passing through the lower beam splitter 7; the other part of the blue...

Embodiment 2

[0014] Embodiment 2: as image 3 As shown, the projection method of the total reflection fluorescent wheel projection device of the present invention is: the polarized light of the blue light passes through the Glan-Foucault prism 5 horizontally, and after passing through the 1 / 4λ wave plate 6, the polarization direction is deflected by 45 degrees, and all of them pass through the lower light splitter. The sheet 7 is focused by the first lens 8 and is incident on the total reflection fluorescent wheel 10. During one rotation cycle of the total reflection fluorescent wheel 10, it is partially covered by the first phosphor powder 1 and the second phosphor powder of the total reflection fluorescent wheel 10. Segment phosphor powder 2 fluoresces yellow light and green light, which is collimated by the first lens 8 in the reverse direction, and deflected by 90 degrees after passing through the lower beam splitter 7; the other part of the blue light is totally reflected by the third ...

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Abstract

The invention discloses a total reflection type fluorescent wheel projection device and projection method. The projection device comprises a polarizing beam splitter device, a total reflection type fluorescent wheel, a lower beam splitting plate and a beam combining device; a first fluorescent powder segment of the total reflection type fluorescent wheel receives incidence of blue fluorescence and emits yellow light, a second fluorescent powder segment receives incidence of blue fluorescence and emits green light, and a third blue light reflecting segment reflects blue light; the projection device sequentially comprises a laser, a Glan-Foucault prism, a 1 / 4 lambda wave plate, the lower beam splitting plate, a first lens, a second lens and the total reflection type fluorescent wheel from left to right, a total reflection mirror is arranged over the Glan-Foucault prism, and an upper beam splitting plate is arranged over the lower beam splitting plate. Therefore, the yellow light, the green light and the green light can be completely collimated through one set of collimating devices, and not only is the number of the lenses decreased, but also space is saved. The total reflection type fluorescent wheel projection device is simple in structure and convenient to use.

Description

technical field [0001] The invention belongs to the technical field of projection equipment, and in particular relates to a total reflection fluorescent wheel projection device and a projection method. Background technique [0002] According to different light sources, projectors are mainly divided into three types: bulbs, LEDs and lasers. Among them, laser projectors are the most advanced projection technology at present, and laser projectors with fluorescent wheels are currently the most cost-effective model. In the prior art, the laser projector of the traditional fluorescent wheel method uses part of the blue light to pass through and the other part to obtain yellow light and green light by means of reflective fluorescence. This method in the prior art requires a set of collimation devices to collimate The direct laser emits yellow light and green light, and another set of collimating devices collimates the blue laser light passing through the fluorescent wheel, so this ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20G02B27/10
CPCG02B27/1006G03B21/204G03B21/2073
Inventor 喻斌
Owner 中航国画(上海)激光显示科技有限公司
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