Illumination – Photographic lighting – Convertible
Patent
1984-08-29
1986-10-07
Lazarus, Ira S.
Illumination
Photographic lighting
Convertible
362 16, 362 18, 362320, 362352, G03B 1506
Patent
active
046162933
ABSTRACT:
A light-diffusion box for illuminating a subject by means of a lamp placed within the box comprises in combination: a hollow rear casing having multiple facets and a reflecting internal face, the casing being constituted by a first sheet of opaque semi-rigid material provided with folding lines between the facets for collapsing the box to a flat state or for erecting the box in three dimensional form in readiness for use; a light-diffusing screen consisting of a translucent second sheet which is capable of assuming a flat shape; fasteners fitted respectively on the edges of the first sheet and on the edges of the second sheet; a central opening formed in the first sheet in order to place a light source in position within the diffusion box; folding lines which extend from the central opening to the periphery of the first sheet; a series of peripheral cut-outs formed in the first sheet with fastenable edges for converting the first sheet to a hollow casing; a polygonal contour at the periphery of the second sheet and corresponding in shape to the contour of the hollow casing formed by the first sheet.
REFERENCES:
patent: 2907873 (1959-10-01), Smith
patent: 4052607 (1977-10-01), Larson
patent: 4428030 (1984-01-01), Baliozian
patent: 4446506 (1984-05-01), Larson
patent: 4490776 (1984-12-01), Kluch
Lazarus Ira S.
Roehrig, Jr. August E.
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