JPS57205727A - Renticular lens for screen - Google Patents

Renticular lens for screen

Info

Publication number
JPS57205727A
JPS57205727A JP56090544A JP9054481A JPS57205727A JP S57205727 A JPS57205727 A JP S57205727A JP 56090544 A JP56090544 A JP 56090544A JP 9054481 A JP9054481 A JP 9054481A JP S57205727 A JPS57205727 A JP S57205727A
Authority
JP
Japan
Prior art keywords
parts
lens
crest
trough
renticular
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.)
Granted
Application number
JP56090544A
Other languages
Japanese (ja)
Other versions
JPS6130252B2 (en
Inventor
Yukio Yada
Koichi Inagaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Rayon Co Ltd
Original Assignee
Mitsubishi Rayon 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 Mitsubishi Rayon Co Ltd filed Critical Mitsubishi Rayon Co Ltd
Priority to JP56090544A priority Critical patent/JPS57205727A/en
Priority to US06/364,193 priority patent/US4418986A/en
Priority to CA000400430A priority patent/CA1181272A/en
Priority to DE8282102985T priority patent/DE3274155D1/en
Priority to EP85106693A priority patent/EP0166262B1/en
Priority to EP82102985A priority patent/EP0063317B1/en
Priority to DK158582A priority patent/DK156019C/en
Priority to DE8585106693T priority patent/DE3280211D1/en
Priority to KR8201529A priority patent/KR890000783B1/en
Publication of JPS57205727A publication Critical patent/JPS57205727A/en
Priority to DK573885A priority patent/DK159841C/en
Publication of JPS6130252B2 publication Critical patent/JPS6130252B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/62—Translucent screens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)

Abstract

PURPOSE:To obtain a bright renticular lens of large visual field angles by forming a total reflection surface on the sloped parts between the crest and trough parts of a medium, and forming lens surfaces on the crest and trough parts. CONSTITUTION:A lens surface of a circular shape in section is formed on the peak surface 1a of each crest part 1 and a lens surface of a concave surface shape is formed on the bottom surface 2a of each trough part 2. The parts 1 and the parts 2 are connected to each other by means of sloped parts 3, and total reflection surfaces 3a are formed on the parts 3. When parallel light is made incident from an opposite surface 4, it advances rectilinear in the medium, reflects on the lens surfaces of the surfaces 1a and the surfaces 2a, and diffuses. The light incident to the surfaces 3a of the parts 3 is totally relfected and emits from the surfaces 1a of the parts 1. Therefore, the bright renticular lens of large visual field angles is obtained.
JP56090544A 1981-04-07 1981-06-12 Renticular lens for screen Granted JPS57205727A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
JP56090544A JPS57205727A (en) 1981-06-12 1981-06-12 Renticular lens for screen
US06/364,193 US4418986A (en) 1981-04-07 1982-03-31 Rear projection screen
CA000400430A CA1181272A (en) 1981-04-07 1982-04-05 Rear projection screen
EP82102985A EP0063317B1 (en) 1981-04-07 1982-04-06 Rear projection screen
EP85106693A EP0166262B1 (en) 1981-04-07 1982-04-06 Rear projection screen
DE8282102985T DE3274155D1 (en) 1981-04-07 1982-04-06 Rear projection screen
DK158582A DK156019C (en) 1981-04-07 1982-04-06 Back side PROJEKTIONSSKAERM
DE8585106693T DE3280211D1 (en) 1981-04-07 1982-04-06 TRANSPARED PROJECTION SCREEN.
KR8201529A KR890000783B1 (en) 1981-04-07 1982-04-07 Rear projection screen
DK573885A DK159841C (en) 1981-04-07 1985-12-11 Back side PROJEKTIONSSKAERM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56090544A JPS57205727A (en) 1981-06-12 1981-06-12 Renticular lens for screen

Publications (2)

Publication Number Publication Date
JPS57205727A true JPS57205727A (en) 1982-12-16
JPS6130252B2 JPS6130252B2 (en) 1986-07-12

Family

ID=14001351

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56090544A Granted JPS57205727A (en) 1981-04-07 1981-06-12 Renticular lens for screen

Country Status (1)

Country Link
JP (1) JPS57205727A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5948744A (en) * 1982-09-13 1984-03-21 Mitsubishi Rayon Co Ltd Back projection screen
JPS5960431A (en) * 1982-09-30 1984-04-06 Mitsubishi Rayon Co Ltd Back projection screen
JPS59133535A (en) * 1983-01-20 1984-07-31 Dainippon Printing Co Ltd Translucent screen
JPS59204833A (en) * 1983-05-09 1984-11-20 Mitsubishi Rayon Co Ltd Back projection screen
JPS6075826A (en) * 1983-06-13 1985-04-30 Mitsubishi Rayon Co Ltd Back projecting screen
JP2003504657A (en) * 1999-07-02 2003-02-04 トムソン ライセンシング ソシエテ アノニム Projection screen for television

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04180253A (en) * 1990-11-14 1992-06-26 Matsushita Electric Ind Co Ltd Method of mounting electronic component

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5948744A (en) * 1982-09-13 1984-03-21 Mitsubishi Rayon Co Ltd Back projection screen
JPS5960431A (en) * 1982-09-30 1984-04-06 Mitsubishi Rayon Co Ltd Back projection screen
JPS59133535A (en) * 1983-01-20 1984-07-31 Dainippon Printing Co Ltd Translucent screen
JPS59204833A (en) * 1983-05-09 1984-11-20 Mitsubishi Rayon Co Ltd Back projection screen
JPH0527097B2 (en) * 1983-05-09 1993-04-20 Mitsubishi Rayon Co
JPS6075826A (en) * 1983-06-13 1985-04-30 Mitsubishi Rayon Co Ltd Back projecting screen
JP2003504657A (en) * 1999-07-02 2003-02-04 トムソン ライセンシング ソシエテ アノニム Projection screen for television

Also Published As

Publication number Publication date
JPS6130252B2 (en) 1986-07-12

Similar Documents

Publication Publication Date Title
EP0317291A3 (en) Automotive lighting element
DE69013196D1 (en) TV scan line doubler with a temporal mean filter.
CA2026834A1 (en) Light fixture with beam shaping lens
JPS57205727A (en) Renticular lens for screen
JPS53131835A (en) Reflecting objective lens
DE68918446D1 (en) COMPRESSOR WITH A LIQUID RING.
JPS57207235A (en) Renticular lens for screen
JPS5357244A (en) Plastics looking white by light reflection and transmission
JPS5370589A (en) Illuminator
JPS57165830A (en) Lenticular lens for screen
JPS56111803A (en) Direction-selective light-shielding body
JPS51131340A (en) Optical interference filter
JPS5477488A (en) Lamp shade
JPS57211870A (en) Lighting device
JPS5317351A (en) Optical filter
JPS5677815A (en) Optical reflection system
JPS57121285A (en) Light coupling device
JPS5445986A (en) Lighting apparatus for vehicles
JPS5461575A (en) Liquid crystal watch
JPS57195237A (en) Fresnel lens for screen
JPS56111801A (en) Direction-selective light-beam reflecting body
JPS5794740A (en) Transmission type screen
JPS57210769A (en) Close contact type line sensor
JPS5440095A (en) Display unit with illumination
JPS5425111A (en) Lighting optical apparatus