Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Making named article
Patent
1990-01-25
1991-01-08
Robinson, Ellis P.
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Making named article
430324, 430327, 350 961, 350 9612, 1566591, 427162, 4273835, 148DIG30, G03C 500, B05D 506, G02B 610
Patent
active
049834991
ABSTRACT:
A method of forming on a substrate a waveguide lens having a predetermined distribution of refractive index, for converging or diverging light rays which propagate through a two-dimensional waveguide formed on a surface of the substrate. The method includes a step of forming a film of a diffusion metal having a constant thickness, a step of removing local portions of said film, by using a mask so that a density of the removed local portions of the film per unit area is continuously varied, and a step of effecting thermal diffusion of the remainder of the film into the substrate. Alternatively, the method includes a step of forming a mask having a multiplicity of separate openings whose density per unit area is continuously varied, a step of exposing a multiplicity of separate exposed areas of the substrate aligned with the separate openings to a material which serves to change a refractive index of the substrate, and a step of moving the material from the surface of the substrate into its interior.
REFERENCES:
patent: 3795433 (1974-03-01), Channin
patent: 3841733 (1974-10-01), Ebersole
patent: 3870394 (1975-03-01), Ploeckl
patent: 3884549 (1975-05-01), Wang et al.
patent: 3891302 (1975-06-01), Dabby et al.
patent: 3893856 (1975-07-01), Bestenreiner et al.
patent: 4000937 (1977-01-01), Kaminow
patent: 4070092 (1978-01-01), Burns
patent: 4175827 (1979-11-01), McMahon
patent: 4262996 (1981-04-01), Yao
patent: 4332879 (1982-06-01), Pastor et al.
patent: 4343890 (1982-08-01), Phillips et al.
patent: 4348079 (1982-09-01), Johnson
patent: 4375312 (1983-03-01), Tangonan
patent: 4396246 (1983-08-01), Holman
patent: 4413270 (1983-11-01), Sprague
patent: 4425023 (1984-01-01), Matsumoto et al.
patent: 4440468 (1984-04-01), Auracher et al.
patent: 4445759 (1984-05-01), Valette
patent: 4468084 (1984-08-01), Hutcheson
patent: 4470661 (1984-09-01), Matsumoto
patent: 4478483 (1984-10-01), Sprague
patent: 4492970 (1985-01-01), Lee
patent: 4523803 (1985-06-01), Arao
patent: 4547262 (1985-10-01), Spillman et al.
patent: 4548464 (1985-10-01), Auracher et al.
patent: 4554050 (1985-11-01), Minford et al.
patent: 4637681 (1987-01-01), Yamamoto et al.
patent: 4649101 (1987-03-01), Thiel et al.
patent: 4686162 (1987-08-01), Stangl et al.
patent: 4693548 (1987-09-01), Tsunoi
Osamu Mikami, "LiNbO.sub.3 Coupled-Waveguide TE/TM Mode Splitter", Applied Physics Letters, vol. 36, No. 7, Apr. 1980, pp. 491-493 (350/96.14).
Delavaux et al., "Fundamental Limitations in the Performance of Chirped Grating Lenses on Planar Optical Waveguides", 8106 IEEE Journal of Quantum Electronics, QE-21, No. 1, Jan. 1985, pp. 86-93.
Matsunaga et al., "Optical Waveguide Isolator in Ti-Diffused LiNbO.sub.3 ", Optics Communications, Dec. 1978, vol. 27, No. 3, pp. 361-364.
Tsao et al., "Photodeposition of Ti and Application to Direct Writing Of Ti: LiNbO.sub.3 Waveguides", Appl. Phys. Lett., vol. 42, No. 7, Apr. 1983, pp. 559-561.
Takizawa, "Electrooptical Fresnel Lens . . . ", Applied Optics, vol. 22, No. 16, Aug. 15, 1983, pp. 2468-2473.
Suzuki Akihiro
Suzuki Makoto
Taki Kazunari
Yamada Shoji
Brother Kogyo Kabushiki Kaisha
Loney Donald J.
Robinson Ellis P.
LandOfFree
Method of forming waveguide lens having refractive index distrib does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of forming waveguide lens having refractive index distrib, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of forming waveguide lens having refractive index distrib will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-934101