Gradient index miniature coupling lens

Details Gradient index miniature coupling lens Gradient index miniature coupling lens

1975-06-26

1977-05-24

Corbin, John K.

350 96GN, 350 96WG, 350175GN, G02B 514

Patent

active

040251578

ABSTRACT:
A miniature optical lens for coupling is fabricated from selected high rective index semiconductor material of uniform thickness. Refractive index gradients are generated in the semiconductor material through changes in composition developed under controlled conditions producing a desired focal length for determinable wavelengths of light energy emitted from a light source to which the miniature optical lens is coupled. The miniature optical lens thus fabricated is especially efficient for coupling light energy from light emitting diodes and junction lasers as well as in semiconductor micro-optics within the visible and the infrared wavelengths as well because the index of refraction of the lens material may be closely matched to the index of refraction of the light source, minimizing light energy transfer losses.

REFERENCES:
patent: 3617917 (1971-11-01), Uchida
patent: 3626194 (1971-12-01), Hirano
patent: 3718383 (1973-02-01), Moore
patent: 3875532 (1975-04-01), Kobayashi et al.
patent: 3877783 (1975-04-01), Matsumura
patent: 3922062 (1975-11-01), Uchida
patent: 3923373 (1975-12-01), Dabby et al.

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