Geometrical instruments – Miscellaneous – Light direction
Patent
1999-03-08
2000-12-05
Davis, Cassandra H.
Geometrical instruments
Miscellaneous
Light direction
40709, B43L 560
Patent
active
061549681
ABSTRACT:
A compact viewing frame is described for use by artists to change the size and shape of viewed subject area. The viewing frame includes an opaque frame having a central opening, and an opaque panel which is slidable within the frame to change the size and shape of the opening in the frame. By moving the panel inwardly and outwardly relative to the frame, the artist can easily determine the most desirable composition of the subject to be painted, sketched, etc. It can also be used by photographers or cinematographers.
REFERENCES:
patent: 216460 (1879-06-01), Rosquist
patent: 223569 (1880-01-01), White
patent: 822633 (1906-06-01), Schrick
patent: 2193518 (1940-03-01), Lubin
patent: 2881544 (1959-04-01), Knox
patent: 5247744 (1993-09-01), Ferris et al.
Davis Cassandra H.
Edmundson Dean P.
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