Method of making lenticular surfaces

Details Method of making lenticular surfaces Method of making lenticular surfaces

1974-11-15

1976-11-16

Kimlin, Edward C.

Gas separation: apparatus

Electric field separation apparatus

Electrode cleaner, apparatus part flusher, discharger, or...

96 81, 96 27E, 96 41, G03C 500, G03C 504

Patent

active

039922065

ABSTRACT:
Lenticules of predetermined optical power and size are formed photographically in the emulsion of a photographic film. An emulsion is exposed to a target having a profile mathematically related to the cross sections desired in the lenticules to be formed. Exposure can be to a cyclically uniform target through a cylindrical lens, by scanning the cyclical target across the emulsion, or by scanning a single profile across the film emulsion in a raster pattern. Upon processing the emulsion in a prescribed manner, a phase image comprising contiguous cylindrical lenticules having cross sections which are predetermined in accordance with the target profile is formed in the emulsion. In a second embodiment, lenticules in an array or matrix having predetermined profiles are produced by exposing two emulsions to a target as above described and processing both emulsions to density images. The density image carrying processed emulsions are then superimposed, the density images formed thereon being orthogonally oriented. A third emulsion is then exposed to the superimposed orthogonally oriented emulsions. Upon processing the third emulsion to an image, lenticules having the desired cross sections are formed in relief in the third emulsion.

REFERENCES:
patent: 2794739 (1957-06-01), Gretener
patent: 3425770 (1969-02-01), Mueller et al.
patent: 3582329 (1971-06-01), Ivanov et al.
patent: 3592529 (1971-07-01), Juhlin et al.
patent: 3775110 (1973-11-01), Bestenreiner et al.
R. L. Lamberts, "Characterization of a Bleached Photographic Material", Jan. '72, Applied Optics, v. 11, No. 1.

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