Back to results
US 4,053,914 AGranted
Light emissive diode
AssigneeITT Industries, Inc.
InventorAnthony Richard Goodwin
Life of this patent
Estimating the term…
Abstract
A high radiance light emissive diode has a linear drive/output characteristic by providing the active region in a mesa structure with tapering sides so that super-radiant light emitted parallel with the junction is reflected and combined with the sublinear component emitted normal to the junction.
Claims6
A uni-directional light emissive diode having improved linear response characteristics comprising:
- an active junction region for propagating light in a plane substantially parallel to said junction and in a plane substantially perpendicular to said junction;
- a mesa for containing said active region having a pair of top and bottom opposing surfaces and tapered sides connecting between said surfaces said tapered sides inclining toward said top surface for reflecting said parallel light in a direction perpendicular to said bottom surface and mixing said parallel light with said perpendicular light and causing said light to become uni-directional;
- and
- a cavity approximate said second surface for receiving one end of an optical fiber therein. whereby said uni-directional light is transmitted into said optical fiber.
1 more element
A uni-directional light emissive diode comprising:
- a mesa having a pair of top and bottom opposing surfaces and tapered sides;
- a light producing junction within said mesa for propagating light in a plane perpendicular to said junction and in a plane parallel to said junction;
- an anti-reflection coating on said bottom surface for reducing light reflection therefrom said bottom surface;
- and
- a cavity proximate said bottom surface for receiving one end of an optical fiber therein;
- whereby said light propagated parallel to said junction becomes reflected by said tapered sides in a direction substantially perpendicular to said junction and mixes with said light propagated perpendicular to said junction and becomes directed into said optical fiber end.
3 more elements
Dependencies are inferred from the claim text.