Prism set and light emitting apparatus using the same

Details Prism set and light emitting apparatus using the same Prism set and light emitting apparatus using the same

2008-04-08

2008-04-08

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

Illumination

Light modifier

Refractor

C362S339000, C362S626000, C359S832000

Reexamination Certificate

active

11401387

ABSTRACT:
A prism unit includes a first prism having a first incident face and a first refraction face that is adjacent to and that cooperates with the first incident face to define a first angle ranging 50° to 70°, a second prism having a second incident face that is generally parallel to the first refraction face and a medium layer sandwiched between the first refraction face and the second incident face, and having a refractive index smaller than that of the first and second prisms.

REFERENCES:
patent: 5191485 (1993-03-01), Kahle
patent: 5835276 (1998-11-01), Asai et al.
patent: 6437921 (2002-08-01), Whitehead
patent: 6994459 (2006-02-01), Worsdell et al.
patent: 7080933 (2006-07-01), Chen et al.

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