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Light source device and projector

A light source device and light source technology, applied in the direction of light source, electric light source, projection device, etc., can solve the problems of light source device temperature rise, light source device cooling difficulty, and cannot seek long life of light source device, so as to improve the degree of freedom and improve utilization efficiency effect

Inactive Publication Date: 2009-07-15
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the temperature inside the light source device rises, the cooling of the light source device becomes difficult, and the long life of the light source device cannot be achieved.

Method used

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  • Light source device and projector
  • Light source device and projector
  • Light source device and projector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] Hereinafter, an embodiment of the present invention will be described based on the drawings.

[0048] "Projector Composition"

[0049] figure 1 , is a plan view showing a schematic configuration of the projector 1 in this embodiment.

[0050] The projector 1 is an optical device that modulates a light beam emitted from a light source according to image information to form image light, and magnifies and projects the image light onto a projection surface such as a screen. The projector 1, as shown in the figure 1 The center is generally composed of a substantially rectangular parallelepiped outer case 2 and an optical unit 3 housed and arranged inside the outer case 2 .

[0051] In addition, although specific illustrations are omitted, in the interior of the exterior case 2, in addition to the optical unit 3, a power supply unit for supplying external power to the constituent members of the projector 1 is arranged, and a power supply unit for supplying power to the pro...

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PUM

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Abstract

A light source device (10) comprises: a source light (11) including a luminous tube and a pair of electrodes, and a primary reflection mirror with concave profile to reflect the light beam from the source light (11). Non-utilization light reflex component (16) with non-utilization light reflex surface (1621) is located in front of the light from the primary reflection mirror, to reflect non-utilization light (R3) departing from the primary reflection mirror in the light beam from the source light (11). The non-utilization light reflex surface (1621) is composed of: center position (0) using the first focus position (F3) as arc light image of the source light (11), and rotation elliptical surface reflecting the non-utilization light (R3) to focus in second focus position (F4) and guiding to the outside of the light source device (10). The source light (11) and the primary reflection mirror are designed without entering the space (S) between the second focus position (F4) and the non-utilization light reflex surface (1621).

Description

technical field [0001] The present invention relates to a light source device and a projector. Background technique [0002] Conventionally, projectors for enlarging and projecting an optical image by modulating a light beam emitted from a light source according to image information have been used. [0003] As a light source device of such a projector, a multi-purpose configuration includes: a discharge type light source lamp such as a metal halide lamp or a high-pressure mercury lamp; a reflector for reflecting a light beam emitted from the light source lamp; A lampshade in which the reflector is accommodated (for example, a document: refer to JP-A-2005-148293). [0004] However, in the light source device described in the literature, among the light beams emitted from the light source lamp, the light beams directed toward the reflector side are reflected by the reflector, and become usable light that can be irradiated to an illumination target. In addition, among the lig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21S2/00F21V7/00F21V17/00F21V29/00G03B21/00F21V29/10F21V29/15F21V29/50F21V29/503F21V29/67F21V29/74F21V29/83F21Y101/00
Inventor 山内健太郎桥爪俊明
Owner SEIKO EPSON CORP