Ultrasonic holographic imaging apparatus having an improved opti

Details Ultrasonic holographic imaging apparatus having an improved opti Ultrasonic holographic imaging apparatus having an improved opti

1991-11-22

1993-01-12

Lerner, Martin

Optical: systems and elements

Holographic system or element

For synthetically generating a hologram

73603, 73605, 359559, 359901, 367 8, 367 10, G01N 2904, G03H 300

Patent

active

051794551

ABSTRACT:
A preferred embodiment of the optical reconstruction assembly 50 in which the assembly 50 includes an assembly housing 52 that is a unitary unit for supporting a spatial filter 72 and a light source 74 in a single plane at the optical length "L" from a collimating lens 86. A liquid container 88 is mounted to the assembly housing 52 containing the holographic liquid 90. The light source 74 and the spatial filter 72 are spaced a fixed distance "A" which is less than the optical diameter "D" of the collimating lens 86.

REFERENCES:
patent: 3561257 (1971-02-01), Brenden
patent: 3564905 (1971-02-01), Brenden et al.
patent: 3585847 (1971-06-01), Brenden
patent: 3715482 (1973-02-01), Haines et al.
patent: 3721312 (1973-03-01), St. John
patent: 3765403 (1973-10-01), Brenden
patent: 3829827 (1974-08-01), Ernvein
patent: 3879989 (1975-04-01), Brenden
patent: 5084776 (1992-01-01), Watson

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