Title: Method of adjusting a Luneburg lens

Abstract: A method for forming a Luneburg lens having a predetermined focal length on an optical waveguide includes fabricating the lens on a waveguide from a photorefractive material and then exposing the lens to energy radiation, particularly ultra violet light, to thereby adjust the refractive index until the predetermined focal length is established.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Verber, Carl M. (Columbus, OH)
Wood, Van E. (Delaware, OH)

Application Number: 06/254465
Filing Date: 1981-04-15
Publication_date: 1983-01-18
Assignee: CANON KK (JP)

Primary Class(es): 427/8 427/554, 427/553, 427/557, 385/129, 385/33
Other Classes: G02B3/00; G02B6/124; G02B27/62; G02B3/00; B05D3/06
US Patent Ref:
Other Refs: Other References: S. K. Yao, Theoretical Model of Thin-Film Deposition Profile with Shadow Effect, J. App. Phys., 50, 3390 (May 1979).
S. K. Yao and D. B. Anderson, Shadow Sputtering Diffraction-Limited Waveguide Luneburg Lenses, App. Phys. Lett. 33,307 (Aug. 1978).
S. A. Keneman, et al., Evaporated Films of Arsenic Trisulfide: Dependence of Optical Properties on Light Exposure and Heat Cycling, J. Opt. Soc. Am., 68, 32 (Jan. 1978).
J. S. Berkes, et al., Photodecomposition of Amorphous As.sub.2 Se.sub.3 and As.sub.2 S.sub.3, J. Appl. Phys., 42, 4908 (Nov. 1971).
R. G. Brandes, et al., Optically Formed Dielectric Gratings in Thick Films of Arsenic-Sulfur Glass, Applied Optics, 9, 1712 (Jul. 1970).
Y. Ohmachi and T. Igo, Laser-Induced Refractive-Index Change in As-S-Ge Glasses, App. Phys. Letter., 20, 506 (Jun. 1972).
S. K. Yao, et al., Guided-Wave Optical Thin-Film Luneburg Lenses: Fabrication Technique and Properties, Appl. Optics, 18, 4067 (1979).

Primary Examiner: Hoffman, James R.
Assistant Examiner:
Attorney: Fitzpatrick, Cella, Harper & Scinto

Claims: