Method and device for establishing and writing a luminous patter

Details Method and device for establishing and writing a luminous patter Method and device for establishing and writing a luminous patter

1988-05-10

1990-03-27

Haroian, Harry N.

Optics: image projectors

Simultaneous projection and manual delineation

353 95, G03B 2100

Patent

active

049127519

ABSTRACT:
In a method of establishing and writing a pattern which, when placed in a light beam from a projector, produces an illuminated area of any shape and size displayed on a screen, a reference point is defined which, when projected onto the screen, forms a contrasted light area thereon. The reference point is moved in the light beam so that its trajectory defines an illuminated area of required shape displaying this movement. This trajectory is written onto a pattern storage device simultaneously with or subsequently to movement of the reference point. The device for implementing this method comprises a plate incorporating a plurality of writable locations, a displacement device for moving from location to location, a pattern defining device, a memorizing device and a pattern writing device. The method and device are primarily intended for use in the theatre and entertainment for producing luminous decorative effects and luminous areas related to the decor, objects and persons in the projection space.

REFERENCES:
patent: 2859659 (1958-11-01), Fenske et al.
patent: 3364606 (1968-01-01), Wengryn
patent: 4026644 (1977-05-01), Tsuchida et al.
patent: 4254552 (1981-03-01), Samis
patent: 4609268 (1986-09-01), Crawford
"New PNC Programming Aid" Newing Hall Ltd.-Metalworking Production, vol. 129, No. 2, Feb. 1985-p. 67.

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