Sandwich reflection hologram

Details Sandwich reflection hologram Sandwich reflection hologram

1989-12-28

1991-12-10

Arnold, Bruce Y.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 15, 359618, G02B 532

Patent

active

050712101

ABSTRACT:
A transmission holographic element (1) composed of a first reflection holographic optical element (2) and a second reflection holographic optical element (3). Reflection holographic optical elements (2,3) are adhesively mated such that the distance separating the two elements is no more than a few wavelengths of the incident light beam (9). The incident light beam (9) passes through first element (2) and is reflected off of the second element (3) which reflects the light beam back towards first element (2) which again reflects the light beam through the second optical element (3). In this manner, two discrete reflection holographic elements (2,3) behave as a single transmission holographic element.

REFERENCES:
patent: 4261647 (1981-04-01), Ellis
patent: 4407564 (1983-10-01), Ellis
patent: 4592620 (1986-06-01), Poole
patent: 4709666 (1987-11-01), Davis
patent: 4713738 (1987-12-01), Davis
patent: 4795223 (1989-01-01), Moss
patent: 4874214 (1989-10-01), Cheysson et al.
patent: 4930847 (1990-06-01), Cederquist
Applications of Holographic Optical Elements Richard Rallison, 12/84.
Holographic Distant Display in Dichromated Gelatin S. Sjolinder & D. Von Gegerfelt, 12/85.

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