Latent image projecting mirror surface body

Details Latent image projecting mirror surface body Latent image projecting mirror surface body

1989-11-30

1992-01-14

Epstein, Henry F.

Stock material or miscellaneous articles

Article having latent image or transformation

272 8M, 4289122, 434303, 359838, G02B 508

Patent

active

050809407

ABSTRACT:
Provided is a magic mirror device comprising a substrate having a front surface which is mirror-finished while having slight recesses and a rear surface having no protrusion on which nicked marks are formed in stead of protrusions, wherein the thickness of the substrate is less than 10 mm while the depth of nicked marks are less than 20 .mu.m, thereby it is possible to precisely read a latent image on the mirror-finished front surface thereof upon irradiation of light onto the front surface.

REFERENCES:
patent: 4141058 (1979-02-01), Mizohata et al.
patent: 4547073 (1985-10-01), Kugimiya
patent: 4585931 (1986-04-01), Duncan et al.

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