Projector emitting laser light of multiple colors and optical axis adjusting method for the projector

A projector and emission direction technology, which is applied in the field of projector and the optical axis adjustment of the projector, and can solve problems such as optical axis misalignment of multicolor laser light.

Inactive Publication Date: 2009-07-29
FUNAI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Because the light source and the lens holder are fixed together with an adhesive in a three-point contact, curing shrinkage may occur in the adhesive due to temperature, etc. optical axis misalignment

Method used

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  • Projector emitting laser light of multiple colors and optical axis adjusting method for the projector
  • Projector emitting laser light of multiple colors and optical axis adjusting method for the projector
  • Projector emitting laser light of multiple colors and optical axis adjusting method for the projector

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Embodiment Construction

[0031] Embodiments of the present invention will be described below with reference to the drawings.

[0032] (structure)

[0033] FIG. 1 shows the structure of a projector of an embodiment of the present invention.

[0034]Referring to Fig. 1, projector 100 comprises front-end FPGA (Field Programmable Gate Array) 310, digital signal processor 320, operation panel 330, back-end block 340, SDRAM (Synchronous Dynamic Random Access Memory) 344, video RAM (random access memory) access memory) 345, laser control circuits 351, 352 and 353, laser output unit 5, galvanometer mirror 372 and driver 373. The driver 373 includes, for example, a driver motor, a coil, and the like.

[0035] The front-end FPGA 310 includes a data / level converter 314 , a timing controller 311 , a data controller 312 and a bit-to-data converter 313 . The digital signal processor 320 includes a mirror servo block 321 and a converter 322 .

[0036] The operation panel 330 is provided on the front surface or t...

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Abstract

The present invention relates to a projector reflecting laser of multiple colors and an optical axis adjusting method therefor. A first light output unit (31)integrally has a first light source (11) and a first prism (17), a second light output unit integrally has a second light source (13) and a second prism (18), and a third light output unit (33) integrally has a third light source (15) and a third prism (19). A first surface (34) of the first prism (17) and a second surface (35) of the second prism (18) are adhered together by an adhesive with a first film located therebetween, and first film (20) passes green laser light and reflects blue laser light. A third surface (36) of the second prism (19) and a fourth surface (37) of the third prism (19) are adhered together by an adhesive with a second film located therebetween, and second film (21) passes the green laser light and the blue laser light, and reflects red laser light.

Description

technical field [0001] The present invention relates to a projector and a method for adjusting the optical axis of the projector, and more particularly relates to a projector emitting polychromatic laser light and a method for adjusting the optical axis of the projector. Background technique [0002] Various techniques have been proposed to reduce the size of the projector. [0003] For example, Japanese Patent Publication No. 2006-527392 has disclosed a projector integrally having a light source chip and an optically transparent beam shaping element substantially surrounding a hemispherical area surrounding the light source chip. [0004] Japanese Patent Publication No. 2005-208183 discloses a projector that guides the luminous flux emitted from a three-color (i.e. RGB) LED (light-emitting diode) light source into a light guide after combining these luminous fluxes by a color combination device, and then transfers the luminous flux from the light The light guide of the gui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/00G03B21/14G02B27/18
CPCG03B21/2033G03B21/14G02B27/1073G02B27/145H04N9/3152H04N9/3129G02B27/104G03B21/2066G03B21/208G03B33/12
Inventor 高桥裕松原宏树西垣宏村山学
Owner FUNAI ELECTRIC CO LTD
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