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. 02, 1989
Filed:
Nov. 12, 1985
David N Lambeth, Webster, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
An infrared sensitive photodiode having a relatively large optically active area and relatively low capacitance comprises a stripe diode adjacent an optically active area having a thick infrared transparent field oxide over a lightly doped channel stop. The low capacitance photodiode is particularly useful in a range finder device of the type having means for projecting a beam of light to illuminate a spot on an object in a scene, and a linear array of photosensors for detecting the apparent location of the spot in the scene to determine the distance to the object. An improved range finder of this type has an infrared LED with a long narrow beam cross section and an array of stripe photodiodes having shapes similar to the shape of the beam cross section.