Diffusion system
OwnerDaniel Nauminventor
Life of this patent
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Abstract
A mixture of approximately 95% barium sulfate and 5% polyvinyl alcohol in powdered form is mixed into a solvent, heated and sprayed onto a diffusion surface to be used in conjunction with high-intensity lamps ranging from 200 watts to 18 kilowatts to convert the irregular lighting from these sources to a smooth, broad, even diffused source suitable for use in motion picture and television settings and other situations in which a very bright, but soft, evenly dispersed light is desirable.
Claims1
Add-on diffuser module attachment for a high-intensity HMI lamp having a light source within a light casing and having spaced filter mounting supports extending from said casing, said diffuser module attachment comprising:
- (a) a housing having a light entrance opening and a light exit opening approximately 90.degree. from said entrance opening and spaced screw mounts position about said light entrance opening and adapted to engage said filter mounting supports to mount said housing to the casing of a high-intensity lamp;
- (b) said housing defining a primary reflecting surface at an angle of on the order of 45.degree. between said light entrance opening and said light exit opening;
- and
- (c) substantially the complete interior surface of said enclosure including all of said primary reflective surface having a coating of highly diffusive material comprising on the order of 95% barium sulfate thereon such that light form a high-intensity lamp to which said housing is mounted will be diffused and integrated and exit through said opening as high-intensity lambertian light.
Dependencies are inferred from the claim text.