Varifocal optical element

Details Varifocal optical element Varifocal optical element

1988-01-11

1989-10-10

Arnold, Bruce Y.

Electric heating

Microwave heating

Tunnel furnace

219539, 350351, 350354, 350419, G02F 129, G02B 314

Patent

active

048727431

ABSTRACT:
An optical element whose focal length is variable comprises a medium whose refractive index is variable by temperature, a heating device for imparting heat to the medium to cause an index gradient resulting from a temperature distribution to be created in the medium, and a device for controlling the amount of heat imparted to the medium by the heating device to vary the shape of the index gradient formed in the medium.

REFERENCES:
patent: 1832532 (1931-11-01), Church
patent: 3403956 (1968-10-01), Miller
patent: 3434779 (1969-03-01), Damen et al.
patent: 3609584 (1971-09-01), Stitch et al.
patent: 3729253 (1973-04-01), Moore et al.
patent: 3736046 (1973-05-01), Zook
patent: 4099046 (1978-07-01), Boynton et al.
patent: 4108622 (1978-08-01), Martin
patent: 4124273 (1978-11-01), Huignard
patent: 4151401 (1979-04-01), Van Bokestal et al.
patent: 4262198 (1981-04-01), Gupta et al.
patent: 4268871 (1981-05-01), Kawamura
patent: 4466703 (1984-08-01), Nishimoto
patent: 4490611 (1984-12-01), Sekimoto et al.
patent: 4509824 (1985-04-01), Yamasaki et al.
patent: 4523801 (1985-06-01), Baba et al.
patent: 4563056 (1986-01-01), Tagawa et al.
patent: 4572616 (1986-02-01), Kowel et al.
Leite et al., "Low Absorption Measurements by Means of the Thermal Lens Effect Using an He-Ne Laser", App. Phys. Letts., 10-1964, pp. 141-143.
Rieckhoff, K. E., Self-Induced Divergence of CW Laser Beams in Liquids--A New Nonlinear Effect in the Propagation of Light, App. Phys. Letts. 7-1966, pp. 87-88.
Koyama, M. H., "Thermo-Optic Effect in LiNbO.sub.3 for Light Deflection & Switching", Electronics Letts., 10-29-81, pp. 842-844.
Sliusarey, G. G., "The Influence of Temperature Gradient of Glass of Optical Systems on the Image Produced by the Latter", Optika I Spektroposkopia (Optics and Spectroscopy) 2-1959, pp. 134-138.

Affiliated with

Also associated with

Rating

Varifocal optical element does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Varifocal optical element, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Varifocal optical element will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1953483