The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 24, 1977
Filed:
Jun. 26, 1975
William E Martin, San Diego, CA (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
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.