1983-01-21
1985-02-05
Henry, Jon W.
350319, 354191, G02B 722
Patent
active
044975490
ABSTRACT:
A collapsible lens shade comprises a foldable bellows connected between front and second plate-like members. A track member is pivotally connected to one of the front and rear plate-like members, preferably the front member, and locking means is provided for locking the track in a position extending from the member to which it is pivotally connected. Slide means is coupled to the other of the front and rear members to permit same to slide along the length of the track member when the track member is in its extended, locked position, and second locking means is provided for locking the slide means at selected positions along the length of the track means. Replaceable adaptors are preferably provided to enable the lens shade to be used with lenses of various barrel diameters. Also, means for inserting filters or other special effect plates is provided, as well as a flash or accessory shoe.
REFERENCES:
patent: 2408184 (1946-09-01), Aiken
patent: 2482629 (1949-09-01), Little
patent: 2933996 (1960-04-01), Dalton
Photos of newly discovered Zenza Bronica Unit, Hasselblad brochure, dated 1975.
Monti Carmel S.
Yurdin Carl
Henry Jon W.
Photographic Peripherals, Inc.
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