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US 2008/0174867 A1Published application
Optical element and projector
AssigneeSeiko Epson Corporation
InventorMasakazu KAWAMURA
Life of this patent
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Abstract
An optical element includes a first rod section that converts an incident light flux into a light flux having a more uniform in-plane light intensity distribution, a reflective polarization beam splitter that reflects a light flux related to one linearly polarization component of light fluxes from the first rod section and transmits a light flux related to the other linearly polarization component, and a second rod section that converts the light flux transmitted through the reflective polarization beam splitter into a light flux having a more uniform in-plane intensity distribution.
Claims8
An optical element comprising:
- a first rod section that converts an incident light flux into a light flux having a more uniform in-plane light intensity distribution;
- a reflective polarization beam splitter that reflects a light flux related to one linearly polarization component of light fluxes from the first rod section and transmits a light flux related to the other linearly polarization component;
- and
- a second rod section that converts the light flux transmitted through the reflective polarization beam splitter into a light flux having a more uniform in-plane intensity distribution.
1 more element
Dependencies are inferred from the claim text.