FRESNEL LENS, SCREEN, IMAGE DISPLAY DEVICE, LENS MOLD MANUFACTURING METHOD, AND LENS MANUFACTURING METHOD

Title:

FRESNEL LENS, SCREEN, IMAGE DISPLAY DEVICE, LENS MOLD MANUFACTURING METHOD, AND LENS MANUFACTURING METHOD

Document Type and Number:

WIPO Patent Application WO/2002/027399

Kind Code:

A1

Abstract:

A Fresnel lens has a pitch including a hybrid prism comprising a refraction prism unit (3A) for emitting an incident light (li1) of an incident angle (a) as an outgoing light (lo1) of an outgoing angle (f) by two refractions, and a total reflection prism unit (4A) for emitting an incident light (li2) of an incident angle (a) as an outgoing light (lo2) parallel to the outgoing light (lo1) by a refraction, a total reflection, and a refraction.

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Inventors:

SUZUKI HIROSHI (JP)
TERAMOTO KOHEI (JP)
ASHIZAKI YOSHIHIRO (JP)
SIKAMA SHINSUKE (JP)
SEKIGUCHI HIROSHI (JP)
RYUUGOU TADAHIKO (JP)
KOJIMA KUNIKO (JP)

Application Number:

PCT/JP2001/008578

Publication Date:

April 04, 2002

Filing Date:

September 28, 2001

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)
DAINIPPON PRINTING CO LTD (JP)
SUZUKI HIROSHI (JP)
TERAMOTO KOHEI (JP)
ASHIZAKI YOSHIHIRO (JP)
SIKAMA SHINSUKE (JP)
SEKIGUCHI HIROSHI (JP)
RYUUGOU TADAHIKO (JP)
KOJIMA KUNIKO (JP)

International Classes:

G02B3/08; G03B21/62; (IPC1-7): G03B21/60; G02B3/08; B29C39/26; B29C39/02; B23B5/00; B29C33/38; B23B27/20

Foreign References:

JPS6152601A	1986-03-15
JPS632031A	1988-01-07
JPH04152332A	1992-05-26
JPH02134527U	1990-11-08
JPS55111936A	1980-08-29
JPS5915925A	1984-01-27
JPH04362625A	1992-12-15
JPH07276371A	1995-10-24
JPH10166202A	1998-06-23
JPS61277935A	1986-12-08
JPS6219837A	1987-01-28

Other References: