Light source device, light source device producing method, and projector

A light source device and light beam technology, applied in the direction of electric light source, projection device, lighting device, etc., can solve the problems of low reflection efficiency, reduced illumination brightness of light source device, low utilization efficiency, etc., achieve easy injection management, improve utilization rate, The effect of increasing the bonding area

Inactive Publication Date: 2006-06-28
SEIKO EPSON CORP
View PDF1 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the existing discharge-type luminous tube, since the reflective and protective film is covered with a mixture of white alumina and silicon dioxide, the reflection efficiency of the reflective and protective film is low, so that the utilization efficiency of the light emitted from the light emitting part is low. , so there is a problem that the illumination luminance of the light source device decreases
[0007] In addition, since the reflective and protective film is formed by vapor deposition, the reflective surface of the film depends on the outer shape of the spherical light-emitting part of the arc tube, so there is a problem that it is not always possible to form an optimal reflective surface for use as light source light.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Light source device, light source device producing method, and projector
  • Light source device, light source device producing method, and projector
  • Light source device, light source device producing method, and projector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] (Structure of the projector)

[0106] The schematic diagram shown in FIG. 1 shows the optical system of a projector 1 according to Embodiment 1 of the present invention. This projector 1 is an optical system that modulates a light beam emitted from a light source according to image information to form an optical image and enlarges and projects it on a screen. An apparatus comprising a light source device 10, a uniform illumination optical system 20, a color separation optical system 30, a relay optical system 35, an optical device 40, and a projection optical system 50, and the optical elements constituting these optical systems 20 to 35 are performed It is housed in the housing 2 for optical components in which a predetermined illumination optical axis A is set for positioning adjustment.

[0107] The light source device 10 is a device that adjusts the light beam emitted from the light source lamp 11 to a certain direction and emits it to illuminate the optical device ...

Embodiment 2

[0199] Next, Embodiment 2 of the present invention will be described. In addition, in the following description, the same code|symbol is attached|subjected to the part and member etc. which were already demonstrated, and the description is abbreviate|omitted or simplified.

[0200] In the above-mentioned first embodiment, the outer peripheral surface 132 of the secondary reflector 13 is a curved surface shape following the curvature of the reflective surface 131, and the reflective surface 131 and the outer peripheral surface of the secondary reflector 13 are formed by grinding the cylindrical member 136. 132.

[0201] In contrast, as shown in FIGS. 14 and 15 , the sub-reflectors 71 to 74 of the second embodiment differ in that their outer peripheral surfaces 712 , 722 , 732 , and 742 are substantially cylindrical or substantially truncated cone. Such sub-mirrors 71 to 74 are formed by grinding the reflecting surface 131 of the cylindrical member 136, but the outer peripheral...

Embodiment 3

[0216] Next, Embodiment 3 of the present invention will be described. In addition, in the following description, the same code|symbol is attached|subjected to the part and member etc. which were already demonstrated, and the description is abbreviate|omitted or simplified.

[0217] The secondary reflection mirror 13 of the above-mentioned embodiment 1 or the secondary reflection mirrors 71, 73, 74 of the embodiment 2, such as Figure 4 As shown in FIG. 14 and FIG. 15 , no processing is performed on the junctions between the outer peripheral surfaces 132 , 712 , 732 , 742 and the bonding surface 134 .

[0218] In contrast, the sub-mirror 76 of the third embodiment is different in that a plurality of notched grooves 761 are formed along the ridgeline of the intersection of the outer peripheral surface 132 and the bonding surface 134 as shown in FIG. 16(A). different.

[0219] The notched grooves 761 are formed to expand outward from the periphery of the opening for inserting t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

Provided is a light source device, a projector and a method for manufacturing the light source device. The light source device 10 comprises: an arc tube 11 having a light emission part 111 and sealing parts 1121, 1122; the elliptical reflector 12; and the sub reflection mirror 13 covering a front side of the arc tube 11, and reflecting light flux emitted from the arc tube 11 onto the elliptical reflector 12. In the light source device 10, a light emission center of discharge light emission of the arc tube 11 is disposed at a first focal position L1 of the elliptical reflector 12, the sub reflection mirror 13 is configured as a member different from the arc tube 11, and a peripheral part of the sub reflection mirror 13 is stored inside a cone shown by lines L3, L4 connecting a second focal position L2 of the elliptical reflector 12 and a sealing part 1122 tip side end part of the arc tube 11 when installed to the sealing part 1122 on the front side of the arc tube 11.

Description

technical field [0001] The present invention relates to an elliptical reflector comprising a luminous tube having a light-emitting portion that discharges and emits light between two electrodes, sealing portions provided at both ends of the luminous portion, and an elliptical reflector that adjusts the light beam emitted from the luminous tube to a certain direction and emits it. , and a reflective surface opposite to the reflective surface of the elliptical reflector, which covers the front side of the light beam emitting direction of the above-mentioned light-emitting tube, and a sub-reflector that reflects the light beam emitted from the above-mentioned light-emitting tube to the above-mentioned elliptical reflector. Light source device and a light source device comprising the A projector of a light source device and a manufacturing method of the light source device. Background technique [0002] Conventionally, there have been projectors that magnify and project an optic...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/14F21S2/00F21V7/00F21V17/00H01J61/35
Inventor 小林弘幸藤泽尚平高户雄二竹泽武士
Owner SEIKO EPSON CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap