Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Including step of mold making
Patent
1995-02-07
1997-09-16
Vargot, Mathieu D.
Plastic and nonmetallic article shaping or treating: processes
Optical article shaping or treating
Including step of mold making
264 137, 264 19, 362299, 362300, B29D 1100
Patent
active
056677367
ABSTRACT:
A lighting fixture includes a grating of discontinuities that is integrally molded in a translucent member for spatially modulating light from a light source of the fixture. A translucent lens forms an outer envelope portion of the fixture, the grating being mounted between the light source and the lens. A reflector mounted opposite the light source from the grating enhances light transmission through the grating. A semi-reflective shell member in front of the light source, used alone or in combination with a geodesicly segmented reflector opposite the light source, greatly enhances the visual effects of the fixture by projecting multiple images of the light source through the grating. A mold for molding the grating includes a large plurality of metallic grating lines corresponding to a diffraction pattern for defining the grating surface; a metallic substrate rigidly connecting the grating lines; a cavity member for defining portions of a mold cavity, the substrate being connected to the cavity member with the grating lines facing the cavity and defining at least a portion of the cavity, whereby the grating surface forms a multiplicity of surface discontinuities on a molded article.
REFERENCES:
patent: 1231710 (1917-07-01), Comstock
patent: 2907249 (1959-10-01), Hjermstad
patent: 3513305 (1970-05-01), Joncas
patent: 3581275 (1971-05-01), Petersen
patent: 3588492 (1971-06-01), Pollock
patent: 3611603 (1971-10-01), Gessner
patent: 3694945 (1972-10-01), Detiker
patent: 4536833 (1985-08-01), Davis
patent: 4545000 (1985-10-01), Fraley et al.
patent: 4704666 (1987-11-01), Davis
patent: 4716506 (1987-12-01), Shang
patent: 4994948 (1991-02-01), Cooch
patent: 5013494 (1991-05-01), Kubo et al.
patent: 5071597 (1991-12-01), D'Amato et al.
patent: 5431862 (1995-07-01), Win
"Quattro"brochure; Schonbeck Worldwide Lighting Inc. Dallas, Texas; 4 pages, undated.
"Lamps Plus Jan. Sale" ad; pp. 1, 4, 6, 8; Jan. 1992.
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