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Optical unit, optical apparatus using the same, light source apparatus, and projection display apparatus

A technology of optical units and optical devices, which is applied in the direction of optical components, optics, projection devices, etc., and can solve the problems of increasing the size of light source devices

Active Publication Date: 2016-04-06
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] However, with the structure described in U.S. Patent Laid-Open Application No. 2014 / 0111775, when the number of LDs increases to obtain higher luminance, the area of ​​the parabolic mirror becomes wider and the parabolic mirror becomes deeper, which may increase the size of

Method used

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  • Optical unit, optical apparatus using the same, light source apparatus, and projection display apparatus
  • Optical unit, optical apparatus using the same, light source apparatus, and projection display apparatus
  • Optical unit, optical apparatus using the same, light source apparatus, and projection display apparatus

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Embodiment Construction

[0021] Exemplary embodiments according to the present invention will be described below with reference to the accompanying drawings. The shapes or relative arrangements of components described in the exemplary embodiments should be changed as needed based on the structure of the device to which the present invention is applied or various situations. That is, the shape or relative arrangement of components is not limited to limit the scope of the present invention to the following exemplary embodiments.

[0022] [Structure of Projection Display Device]

[0023] will first refer to figure 1 A structure of an optical device-mounted projector 1000 according to an exemplary embodiment of the present invention is described.

[0024] A projector (projection display device) 1000 includes a light source device 100 , an illumination optical system 200 , a color separation-combination system 300 and a projection lens 400 . With this configuration, projector 1000 can project an image o...

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Abstract

The invention relates to an optical unit, optical apparatus using the same, light source apparatus, and projection display apparatus. The optical unit includes a plurality of paraboloid mirrors configured to reflect light fluxes from a plurality of LDs and to guide them to a concave lens. The light fluxes from the paraboloid mirrors are a plurality of convergent light fluxes, and the paraboloid mirrors reflect the light fluxes from the LDs such that as the convergent light fluxes travel farther away from the paraboloid mirrors, distances therebetween become shorter.

Description

technical field [0001] The present invention relates to an optical unit, an optical device using the optical unit, a light source device and a projection display device. The present invention particularly relates to a light source device using a solid-state light source such as a semiconductor laser as a light source. Background technique [0002] In recent years, a projector has been developed that irradiates a phosphor with a light beam emitted from a high-output laser diode (LD) as excitation light, and uses wavelength-converted fluorescent light. [0003] It is assumed that many LDs are arranged and used to realize high luminance in a projector. However, the light output of LDs decreases at higher temperatures, and thus when LDs are densely arranged with priority given to projector miniaturization, the LDs heat each other and the light output of the LDs decreases, which degrades the brightness of a projected image. [0004] For this reason, it is necessary to arrange L...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20G03B21/14
CPCG03B21/2013G03B21/2066G03B21/204G03B21/208G02B27/141G02B5/10G02B27/106G03B21/2033
Inventor 猪子和宏须藤贵士
Owner CANON KK
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