Framing projector with adjustable shutter

Details Framing projector with adjustable shutter Framing projector with adjustable shutter

2007-03-27

2007-03-27

Mahopney, Christopher (Department: 2851)

Optics: image projectors

Light shield, mask, hood, or diaphragm

C362S281000

Reexamination Certificate

active

11044835

ABSTRACT:
A light fixture includes an adjustable shutter to illuminate a desired area. The fixture resides substantially behind a room surface (e.g., a ceiling) and includes a fixed portion residing on and behind the surface, and a movable portion which is extendable from the surface for adjustment of the shutter. A tilting member rotates in a rotating member to allow two axis of adjustment. A light bulb mounts in the tilting member, and light from the bulb is reflected by a mirror or prism to provide a compact fixture. A four part shutter is imposed between the bulb and the mirror or prism to adjust the shape and area which is illuminated.

REFERENCES:
patent: 4468720 (1984-08-01), Arai
patent: 4623956 (1986-11-01), Conti
patent: 5510969 (1996-04-01), Rodger et al.
patent: 5904417 (1999-05-01), Hewett
patent: 2002/0060911 (2002-05-01), Brockmann et al.

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