Coating processes – Optical element produced – Transparent base
Patent
1980-01-07
1982-04-27
Pianalto, Bernard D.
Coating processes
Optical element produced
Transparent base
427250, 427282, 427294, 427299, B05D 506
Patent
active
043271294
ABSTRACT:
The present optical element for an astable laser resonator includes a subate of a material which is transparent to the respective laser radiation. In manufacturing the present optical element the substrate is ground and polished on both surfaces and a template or mask is secured to one surface of the substrate. The mask has a mathematically computed boundary configuration which provides a diffraction limited divergence for the finished optical element. In the areas not covered by the mask a highly reflective coating is applied, for example, by vapor deposition. The substrate area which is not covered by the highly reflective coating remains transparent to the laser radiation. Thus, the element is useful as the reflector and/or as a lens in an astable laser resonator.
REFERENCES:
patent: 3846165 (1974-11-01), Ettenberg et al.
Fasse W. G.
Messerschmitt-Boelkow-Blohm Gesellschaft mit beschraenkter Haftu
Pianalto Bernard D.
Roberts W. W.
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