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A compact projector light source

A technology with a compact structure and projectors, which is applied in the field of projector light sources, can solve the problems of complex optical paths of light sources, large occupied volume, and many lens components, and achieve the effects of high output luminous flux, small occupied volume, and few lens components

Active Publication Date: 2019-08-02
成都九天光学技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved and the technical task proposed by the present invention are to improve the prior art and provide a light source for a projector with a compact structure, so as to solve the problem of complex light paths, many lens components, large volume and high cost in the current technology. The problem

Method used

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  • A compact projector light source
  • A compact projector light source
  • A compact projector light source

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 with figure 2 As shown, light source one 11 and light source two 12 all adopt blue lasers, preferably light source one 11 is a blue laser with a main wavelength of 460nm, and light source two 12 is a blue laser with a main wavelength of 445nm; in order to improve structural compactness, light source one 11, The second light source 12 is arranged side by side and the light emitted is in the same direction and parallel. The first lens 21 and the second lens 22 are respectively located on the light path of the light emitted by the first light source 11 and the second light source 12. The first lens 21 is located on the side of the second lens 22, and the second lens The first 21 and the second lens 22 intersect to form an X shape at a certain angle. In this embodiment, the first lens 21 and the second lens 22 are perpendicular to each other, and the second lens 22 reflects blue and transmits other colors. The light emitted by the first light source 11 and...

Embodiment 2

[0046] Such as image 3 As shown, the difference from the first embodiment is that the first light source 11 is arranged symmetrically on both sides of the second light source 12. According to the white balance, the number of lasers on one side of the first light source 11 is half of that of the first light source 11 in the first embodiment. Both sides of 22 are symmetrically provided with lens 1 21, so that the blue laser light in the final output beam is located on both sides of the radiation fluorescence, which solves the problem of no blue light in a part of the area when displayed on the screen in Embodiment 1, and improves the overall picture. uniformity.

Embodiment 3

[0048] Such as Figure 4 As shown, the difference from the first embodiment is that the second lens 22 transmits blue light and reflects other colors;

[0049] The generation process of the blue light part in the output light beam is the same as that of Embodiment 1;

[0050] The red light, green light and yellow light in the output light beam are slightly different from the first embodiment. The light source two 12 emits blue laser light, and after passing through the focus shaping component one 4, it irradiates on the lens two 22 and transmits it to the focus shaping component two. 5. After the blue laser passes through the focusing and shaping component 25, it is irradiated on the fluorescent wheel 3, and the fluorescent wheel 3 rotates at a high speed, thereby exciting and producing radiant fluorescence of various colors;

[0051] When the fluorescent wheel 3 rotates to the red fluorescent powder area and is irradiated by the blue laser light emitted by the light source 2...

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Abstract

The invention discloses a projector light source compact in structure. The projector light source comprises a first light source, a second light source, a fluorescent wheel and a light splitting assembly, wherein the first light source and the second light source are the light sources of the same color; the light splitting assembly comprises a first lens and a second lens; the second lens reflectsthe color of the second light source and transmits other colors, or the second lens transmits the color of the second light source and reflects other colors; the first lens reflects the color of thefirst light source; the light emitted from the second light source slantly shoots on the second lens and then is guided by the second lens to shoot on the fluorescent wheel; a fluorescent powder region on the fluorescent wheel is excited to generate reversely transmitted radiation fluorescent light to shoot on the second lens; and the light emitted from the first light source slantly shoots on thefirst lens, and then the light is reflected by the first lens to be mixed with the radiation fluorescent light guided by the second lens to be output. The projector light source compact in structuredisclosed in the invention is simple in structure, compacted, less in lens parts, small in occupied size, low in manufacturing cost and high in use stability.

Description

technical field [0001] The invention relates to the technical field of projection light sources, in particular to a compact projector light source. Background technique [0002] Nowadays, more and more home appliance manufacturers are beginning to move closer to the laser TV product line. With the deepening of a series of brands, laser projection has gradually gained the attention of consumer groups. The light sources of projection systems are mainly divided into three categories, namely Bulb light source, LED light source and laser light source. Laser light source is the projection light source that has received the most attention in recent years. Laser light source has the characteristics of large wavelength selectivity and high spectral brightness. It can synthesize more than 90% of the color gamut coverage of natural colors seen by human eyes, and achieve perfect color reproduction. At the same time, the laser light source has ultra-high brightness and long service life...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/20
CPCG03B21/2013G03B21/204G03B21/2066G03B21/208
Inventor 彭水海
Owner 成都九天光学技术有限公司
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