Illumination – Photographic lighting – Including specific light modifier
Patent
1992-03-09
1993-02-23
Ostrager, Allen M.
Illumination
Photographic lighting
Including specific light modifier
362 3, 362351, 362457, 248284, G03B 1502, E04G 300
Patent
active
051884437
ABSTRACT:
A shade control arrangement comprises a shade panel having inner and outer edges with an attachment clamp or attachment clips at the inner edge and additional clips at the outer edge. The outer clips can be used to hold the edge of a gelatin sheet or a perforated sheet to stretch the sheet across a source of light to which a pair of panels is connected using the inner clips or clamp. The clamp comprises inner and outer jaws which form a pocket that can be closed with a screw, at least one of the jaws being pivotally connected between the legs of a U-shaped fork that is detachably connected to the shade panel near the inner edge thereof. A flexible shaft is detachably connected to the clamp. A similarly structured clamp can be used to capture the edge of a flexible sheet that contains a plurality of parallel bend troughs so that the sheet can be bent into a variety of shapes. The arrangement also includes an articulated shade device which comprises a base plate to which are pivotally connected a pair of articulated arms. Each arm is made of rectangular arm segments that are connected to each other in series.
REFERENCES:
patent: 3852582 (1974-12-01), Lowell
patent: 4832299 (1989-05-01), Gorton et al.
Lowell Ross
Pronputhsri Apiruk
Lowel-Light Manufacturing Inc.
Ostrager Allen M.
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