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Light source device

A technology of light source device and concave reflector, which is applied in the direction of light source, electric light source, projection device, etc., which can solve the problems of heat-resistant absorbing layer, inability to play the function of heat-ray absorbing layer, large structural changes, etc., and achieve high adhesion Effect

Inactive Publication Date: 2009-07-22
USHIO DENKI KK
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Problems solved by technology

[0013] However, the heat ray absorbing layer disclosed in Patent Document 4 is not heat-resistant, and the structure of the layer changes greatly due to heat, so it cannot function as a heat ray absorbing layer in about 200 hours, for example, when using the above-mentioned ultra-high pressure mercury lamp or the like. As a result the above problem

Method used

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Embodiment Construction

[0033] Hereinafter, the light source device of the present invention will be described in detail with reference to the drawings.

[0034] figure 1 It is an explanatory sectional view showing a schematic configuration of an example of the light source device of the present invention. figure 2 yes means figure 1 An enlarged cross-sectional view of the profile of the concave reflector of the light source device shown.

[0035] This light source device 10 includes a concave reflector 20 having a light irradiation port 24 on the front, and a light source lamp 40 made of, for example, an ultrahigh pressure mercury lamp.

[0036] The concave reflector 20 has a base 21 made of metal, and the base 21 has: a concave light concentrating portion 22 forming a space for converging light emitted from the light source lamp 40; A cylindrical neck portion 23 formed by extending from the central position to the rear.

[0037] Then, on the back surface of the condensing part 22, for example,...

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Abstract

The present invention provides a light source device capable of being structured as restraining projection of unnecessary light beams such as heat ray although equipped with a reflecting mirror itself with high enough mechanical strength and radiating property, and therefore, capable of stably projecting visible light of enough intensity. In the light source device equipped with a high-pressure discharge lamp and a concave reflecting mirror, a base body of the concave reflecting mirror is structured of metal, on an inner surface of which, a nickel layer, a nickel oxide layer and a visible light beam reflecting layer consisting of a dielectric multilayer film are laminated in that order.

Description

technical field [0001] The present invention relates to a light source device equipped with a high-pressure discharge lamp and a concave reflector, in particular to a light source device such as sealing a 0.15mg / mm 3 For the above mercury, the mercury vapor pressure at the time of lighting becomes an ultrahigh pressure mercury lamp, such as a liquid crystal display device or a DLP (Digital Light Processor: registered trademark) using a DMD (Digital Mirror Device: registered trademark) as a light source, etc. A light source device used in a projector device. Background technique [0002] Currently, for example, in a projection type projector device, for example, a rectangular screen or the like is required to illuminate an image with uniform and comparable color rendering, and a light source device capable of obtaining high light output is used as a light source. [0003] In such a light source device, for example, a metal halide lamp configured by sealing mercury or metal h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/20G03B21/14H01J61/00G02B5/08F21S2/00F21V7/00F21V7/22F21V15/00F21Y101/00G02B5/10
Inventor 岩林弘久
Owner USHIO DENKI KK
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