Optical: systems and elements – Prism – With reflecting surface
Patent
1977-10-28
1979-12-18
Stern, Ronald J.
Optical: systems and elements
Prism
With reflecting surface
350 386, 359 360, G03H 120, G03H 124
Patent
active
041791827
ABSTRACT:
A jewel and method of making same, the jewel being a unique hologram and lens combination. A reflection hologram of an object is first made and the psuedoscopic image is then used in recording a second generation hologram which permits reconstruction of the virtual image near or within the lens upon which the second generation hologram is located, usually being adhered thereto, the lens functioning to refract incident white light and enhancing spectral changes and brightness, while virtually eliminating the critical angle effect in the viewing of the jewel, and dramatically increasing the optical leverage or proportional magnification of apparent movement of the image for any given alteration in the incident light or viewing angle relative to the jewel.
REFERENCES:
patent: 3515452 (1970-06-01), Pole
patent: 3552853 (1971-01-01), Sanders et al.
patent: 3754808 (1973-08-01), Clay et al.
patent: 3778361 (1973-12-01), Courtney-Pratt
Stroke et al., Physics Letters, vol. 20, No. 4, Mar. 1966, pp. 368-370.
Rotz et al., Applied Physics Letters, vol. 8, No. 6, Mar. 1966, pp. 146-148.
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