Title:
【発明の名称】反射型LCD用光学系
Document Type and Number:
Japanese Patent JP2002542509
Kind Code:
A
Abstract:
Optical systems for use with reflective LCDs (8, 9, 32, 34, 36) are provided. The systems include a polarization beam splitter (5) which can be composed of polarization beam splitting cubes (26A-26D) having sheet polarizers (30) and/or half wave plates (28) at their mating surfaces. By orienting the half wave plates so that they convert S polarization to P polarization and P polarization to S polarization, the polarization beam splitter can provide a high contrast ratio at a viewing screen between light from the "on" and "off" pixels of the reflective LCDs.
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Inventors:
Full Carson, E. Gregory
Magalil, Simon
Rudolph, John Dee
Magalil, Simon
Rudolph, John Dee
Application Number:
JP2000612791A
Publication Date:
December 10, 2002
Filing Date:
April 10, 2000
Export Citation:
Assignee:
US Precision Lens Inc.
International Classes:
G02B5/04; G02B5/30; G02B27/28; G02F1/1335; H04N5/74; H04N9/31; (IPC1-7): G02B27/28; G02B5/04; G02B5/30; G02F1/1335
Attorney, Agent or Firm:
Seiji Yanagida (1 person outside)