Projector unit

Details Projector unit Projector unit

2011-04-19

2011-04-19

Alavi, Ali (Department: 2875)

Illumination

Supported by vehicle structure

Projection-type headlamp

C362S282000, C362S284000, C362S507000, C362S276000

Reexamination Certificate

active

07926993

ABSTRACT:
A projector unit is provided with a mechanism for changing the spatial distribution of a light beam. The projector unit includes a housing, an action element having a revolving shaft, a first diaphragm for cropping the light beam, wherein the first diaphragm is fixedly coupled to the shaft of the action element, a second diaphragm for cropping the light beam, wherein the second diaphragm is rotatingly coupled to the shaft of the action element, a first biasing element disposed between the second diaphragm and the housing, wherein the first biasing element regulates a positioning of the second diaphragm relative to the housing, and a second biasing element disposed between the first diaphragm and the second diaphragm, wherein the second biasing element regulates a spacing between the first biasing element and the second biasing element.

REFERENCES:
patent: 3046864 (1962-07-01), Batterman et al.
patent: 5339226 (1994-08-01), Ishikawa
patent: 5343371 (1994-08-01), Kobayashi et al.
patent: 7364331 (2008-04-01), Tajima
patent: 2007/0153238 (2007-07-01), Takeuchi et al.
patent: 199 09 413 (2000-09-01), None
patent: 0 690 261 (1996-01-01), None

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