Diffraction optical element, lighting device, and projector

Details Diffraction optical element, lighting device, and projector Diffraction optical element, lighting device, and projector

2011-08-30

2011-08-30

Lee, Jong-Suk (James) (Department: 2885)

Illumination

Light modifier

Refractor

C362S293000, C362S332000, C359S558000

Reexamination Certificate

active

08007141

ABSTRACT:
A diffraction optical element includes: a first diffraction pattern which diffracts entering light to produce illumination light for illuminating a first area; and a second diffraction pattern which is disposed adjacent to the first diffraction pattern and diffracts entering light to produce illumination light for illuminating a second area other than the first area by using at least a part of the diffracted light.

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