Vehicle lamp

Illumination – Supported by vehicle structure – Light modifier

Reexamination Certificate

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Details

C362S538000, C362S521000, C362S522000, C362S606000, C362S620000

Reexamination Certificate

active

08070337

ABSTRACT:
A vehicle lamp can include a light source unit including a light guide plate with a light emission surface, and a point or line light source opposed to one end face of the light guide plate. The light guide plate can be made of a transparent plate-like material. A convex projection lens can be configured to focus light emitted from the light source unit and project the light forward in a direction of light illumination. The light guide plate can have a prism array on a rear surface thereof extending with a serrated cross section from the one end face to the opposite end face of the light guide plate, and in a direction parallel with the end face. The prism array can include a plurality of prism surfaces, with each prism surface being obliquely formed so that when light enters the light guide plate from the light source side and impinges thereon, a substantial amount of the light can be totally reflected into small angles of incidence to the emission surface. The projection lens can be disposed such that a focus thereof on a light source unit side is located on the light emission surface of the light guide plate.

REFERENCES:
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patent: 5095477 (1992-03-01), Shimozawa
patent: 6471383 (2002-10-01), Oyama et al.
patent: 7204627 (2007-04-01), Ishida
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patent: 2004/0114390 (2004-06-01), Yamamura
patent: 2006/0044825 (2006-03-01), Sa
patent: 2006/0087861 (2006-04-01), Tessnow et al.
patent: 2007/0223247 (2007-09-01), Lee et al.
patent: 2008/0014995 (2008-01-01), Noba
patent: 2008/0024737 (2008-01-01), Iwasaki
patent: 2001076510 (2001-03-01), None
patent: 2006509343 (2006-03-01), None
patent: 2008226542 (2008-09-01), None

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