Shadow control system

Details Shadow control system Shadow control system

1991-05-16

1992-08-11

Ostrager, Allen M.

Illumination

Photographic lighting

Including specific light modifier

362283, 362323, F21V 1702

Patent

active

051385309

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 varity 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: 2976511 (1961-03-01), Lipsitz
patent: 4777566 (1988-10-01), Lowell et al.

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