JPS63271301A - Light source for optical shutter array - Google Patents

Light source for optical shutter array

Info

Publication number
JPS63271301A
JPS63271301A JP62104678A JP10467887A JPS63271301A JP S63271301 A JPS63271301 A JP S63271301A JP 62104678 A JP62104678 A JP 62104678A JP 10467887 A JP10467887 A JP 10467887A JP S63271301 A JPS63271301 A JP S63271301A
Authority
JP
Japan
Prior art keywords
light
optical shutter
toward
shutter array
array
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62104678A
Inventor
Masashi Fuse
Original Assignee
Alps Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alps Electric Co Ltd filed Critical Alps Electric Co Ltd
Priority to JP62104678A priority Critical patent/JPS63271301A/en
Publication of JPS63271301A publication Critical patent/JPS63271301A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE: To enable supply of a sufficient quantity of light to an optical shutter array with high efficiency of light utilization by providing a diffusion pipe which reflects the light emitted from a lamp and reflecting mirror so as to constitute a luminous flux having nearly isotropy heading toward the adequate incident direction of the optical shutter array and a light guide.
CONSTITUTION: The light from the halogen lamp 21 heads partly directly toward an IR cut filter 24 and partly to a dichroic mirror 22. The light heading to the mirror 22 is reflected on the inside surface and is advanced toward the filter 24 and the diffusion pipe 23 to constitute the luminous flux nearly parallel with the light heading to the filter 24 and the arranging direction of the LCS array 9. The light which is thereafter made into white light by being removed of IR rays enters the inside of the body 25 of the diffusion pipe 23, by which the quantity of the light is uniformly dispersed and the isotropy toward the adequate incident direction to the LCS array 9 is imparted on the light. This light is entered through a slit 27 into the light guide 8. The sufficient quantity of the light is thereby supplied to the optical shutter array with the high efficiency of light utilization.
COPYRIGHT: (C)1988,JPO&Japio
JP62104678A 1987-04-30 1987-04-30 Light source for optical shutter array Pending JPS63271301A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62104678A JPS63271301A (en) 1987-04-30 1987-04-30 Light source for optical shutter array

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62104678A JPS63271301A (en) 1987-04-30 1987-04-30 Light source for optical shutter array

Publications (1)

Publication Number Publication Date
JPS63271301A true JPS63271301A (en) 1988-11-09

Family

ID=14387128

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62104678A Pending JPS63271301A (en) 1987-04-30 1987-04-30 Light source for optical shutter array

Country Status (1)

Country Link
JP (1) JPS63271301A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03167520A (en) * 1989-11-28 1991-07-19 Pioneer Electron Corp Light source device for liquid crystal projection device
US5050946A (en) * 1990-09-27 1991-09-24 Compaq Computer Corporation Faceted light pipe
US5420761A (en) * 1993-03-29 1995-05-30 Precision Lamp, Inc. Flat, thin, uniform thickness large area light source
US5485354A (en) * 1993-09-09 1996-01-16 Precision Lamp, Inc. Flat panel display lighting system
US5485291A (en) * 1994-02-22 1996-01-16 Precision Lamp, Inc. Uniformly thin, high efficiency large area lighting panel with two facet grooves that are spaced apart and have light source facing facets with smaller slopes than the facets facing away from the light source
US5506929A (en) * 1994-10-19 1996-04-09 Clio Technologies, Inc. Light expanding system for producing a linear or planar light beam from a point-like light source
US5608837A (en) * 1995-05-15 1997-03-04 Clio Technologies, Inc. Transmissive type display and method capable of utilizing ambient light
US5664862A (en) * 1994-11-29 1997-09-09 Precision Lamp, Inc. Edge light for panel display
US5671994A (en) * 1994-06-08 1997-09-30 Clio Technologies, Inc. Flat and transparent front-lighting system using microprisms
US5926601A (en) * 1996-05-02 1999-07-20 Briteview Technologies, Inc. Stacked backlighting system using microprisms

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03167520A (en) * 1989-11-28 1991-07-19 Pioneer Electron Corp Light source device for liquid crystal projection device
US5050946A (en) * 1990-09-27 1991-09-24 Compaq Computer Corporation Faceted light pipe
US5420761A (en) * 1993-03-29 1995-05-30 Precision Lamp, Inc. Flat, thin, uniform thickness large area light source
US5485354A (en) * 1993-09-09 1996-01-16 Precision Lamp, Inc. Flat panel display lighting system
US5485291A (en) * 1994-02-22 1996-01-16 Precision Lamp, Inc. Uniformly thin, high efficiency large area lighting panel with two facet grooves that are spaced apart and have light source facing facets with smaller slopes than the facets facing away from the light source
US5671994A (en) * 1994-06-08 1997-09-30 Clio Technologies, Inc. Flat and transparent front-lighting system using microprisms
US5506929A (en) * 1994-10-19 1996-04-09 Clio Technologies, Inc. Light expanding system for producing a linear or planar light beam from a point-like light source
US5668913A (en) * 1994-10-19 1997-09-16 Tai; Ping-Kaung Light expanding system for producing a linear or planar light beam from a point-like light source
US5835661A (en) * 1994-10-19 1998-11-10 Tai; Ping-Kaung Light expanding system for producing a linear or planar light beam from a point-like light source
US5664862A (en) * 1994-11-29 1997-09-09 Precision Lamp, Inc. Edge light for panel display
US5608837A (en) * 1995-05-15 1997-03-04 Clio Technologies, Inc. Transmissive type display and method capable of utilizing ambient light
US5926601A (en) * 1996-05-02 1999-07-20 Briteview Technologies, Inc. Stacked backlighting system using microprisms

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