Coating processes – Measuring – testing – or indicating – Thickness or uniformity of thickness determined
Patent
1987-01-23
1989-06-06
Morgenstern, Norman
Coating processes
Measuring, testing, or indicating
Thickness or uniformity of thickness determined
427 531, 427162, 427167, B05D 306, B05D 506
Patent
active
048370444
ABSTRACT:
A method for fabricating graded refractive index (rugate, optical filters as well as complex rugate filters having prespecified refractive index verses thickness profiles is disclosed. A plurality of at least two different compatable thin film deposition source components of different refractive index, which are stoichiometrically combinable in variable proportion, such as silicon nitride and silicon oxide, or zinc sulfide and zinc selenide, are used to form a thin film material with a refractive index which varies as a function of the proportions of the components. Each source component is separately laser flash evaporated and codeposited on a substrate to form a coating while monitoring the physical and optical thicknesses of the coating, to allow adjustment of the respective laser flash evaporation rates of the source components.
REFERENCES:
patent: 2771055 (1956-11-01), Kelly et al.
patent: 2936732 (1960-05-01), Ring et al.
patent: 3926508 (1975-12-01), Harmsen et al.
patent: 4049352 (1977-09-01), Lardon et al.
patent: 4311725 (1982-01-01), Holland
patent: 4427723 (1984-01-01), Swain
patent: 4469713 (1984-09-01), Schwiecker et al.
patent: 4545646 (1985-10-01), Chern et al.
patent: 4707611 (1987-11-01), Southwell
patent: 4711790 (1987-12-01), Morishige
patent: 4713140 (1987-12-01), Tien
patent: 4770895 (1988-09-01), Hartley
Balasubramanian, et al., "J. Vac. Sci. Technol", vol. 9, No. 3, May-Jun. 1972.
Bartholomew Craig S.
Betz Howard T.
Harris Richard J.
Kogler Kent J.
Murarka Narayan P.
ITT Research Institute
Morgenstern Norman
Padgett Marianne L.
LandOfFree
Rugate optical filter systems does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rugate optical filter systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rugate optical filter systems will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-39591