JPS56158329A - Transmission type screen - Google Patents

Transmission type screen

Info

Publication number
JPS56158329A
JPS56158329A JP4639380A JP4639380A JPS56158329A JP S56158329 A JPS56158329 A JP S56158329A JP 4639380 A JP4639380 A JP 4639380A JP 4639380 A JP4639380 A JP 4639380A JP S56158329 A JPS56158329 A JP S56158329A
Authority
JP
Japan
Prior art keywords
refractive index
linear part
angle
linear
value smaller
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
JP4639380A
Other languages
Japanese (ja)
Inventor
Yasutomo Funakoshi
Tamotsu Wakahata
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP4639380A priority Critical patent/JPS56158329A/en
Priority to CA000374881A priority patent/CA1158898A/en
Priority to DE8181301520T priority patent/DE3162926D1/en
Priority to US06/251,903 priority patent/US4379617A/en
Priority to EP81301520A priority patent/EP0037739B1/en
Priority to AU69134/81A priority patent/AU523917B2/en
Publication of JPS56158329A publication Critical patent/JPS56158329A/en
Pending 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

Abstract

PURPOSE:To easily obtain a directive property as desired, by forming the 1-pitch section of a lenticular lens with a linear part and a circular part and setting the angle formed by the linear part and the surface vertical to the incident direction from a projection tube at a value smaller than the full reflection angle. CONSTITUTION:The base material 5 of transparent polymethyl methacrylate has the 1.492 refractive index plus a lenticular surface 6 formed with a linear and round parts in terms of its section and on a single surface and contains 3.0wt% silicon oxide 7 having 1.544 refractive index and 8.7 mean grain size. The angle of inclination at the linear part is set at the value smaller than the full reflection angle caused by the refractive index of the material 5. As a result, a high-contrast image can be obtained without lowering the quality of image.
JP4639380A 1980-04-08 1980-04-08 Transmission type screen Pending JPS56158329A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP4639380A JPS56158329A (en) 1980-04-08 1980-04-08 Transmission type screen
CA000374881A CA1158898A (en) 1980-04-08 1981-04-07 Rear projection screen for a color television projector
DE8181301520T DE3162926D1 (en) 1980-04-08 1981-04-07 Light-transmitting type screen for a color television projector
US06/251,903 US4379617A (en) 1980-04-08 1981-04-07 Rear projection screen for a color television projector
EP81301520A EP0037739B1 (en) 1980-04-08 1981-04-07 Light-transmitting type screen for a color television projector
AU69134/81A AU523917B2 (en) 1980-04-08 1981-04-07 Rear projection screen for a colour television projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4639380A JPS56158329A (en) 1980-04-08 1980-04-08 Transmission type screen

Publications (1)

Publication Number Publication Date
JPS56158329A true JPS56158329A (en) 1981-12-07

Family

ID=12745896

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4639380A Pending JPS56158329A (en) 1980-04-08 1980-04-08 Transmission type screen

Country Status (1)

Country Link
JP (1) JPS56158329A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58198035A (en) * 1982-05-14 1983-11-17 Mitsubishi Rayon Co Ltd Screen of back projection

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3578841A (en) * 1967-12-15 1971-05-18 William B Elmer Rear projection screen
JPS4877830A (en) * 1971-12-15 1973-10-19
FR2276605A1 (en) * 1974-06-28 1976-01-23 Bachelot Andre Double sided optical projection surface - improved image contrast transfer and improved luminous transfer efficiency
JPS5189419A (en) * 1975-02-03 1976-08-05

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3578841A (en) * 1967-12-15 1971-05-18 William B Elmer Rear projection screen
JPS4877830A (en) * 1971-12-15 1973-10-19
FR2276605A1 (en) * 1974-06-28 1976-01-23 Bachelot Andre Double sided optical projection surface - improved image contrast transfer and improved luminous transfer efficiency
JPS5189419A (en) * 1975-02-03 1976-08-05

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58198035A (en) * 1982-05-14 1983-11-17 Mitsubishi Rayon Co Ltd Screen of back projection
JPH0261727B2 (en) * 1982-05-14 1990-12-20 Mitsubishi Rayon Co

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