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:
Jun. 26, 2001
Filed:
Aug. 28, 2000
Mervyn Aubrey Little, Surrey, GB;
Kelvyn Church, Reading, GB;
Keeler Limited, Windsor, GB;
Abstract
A spot retinoscope is used to assess a refractive error of an eye, and has viewing means (,) for viewing the eye under examination, and projection means (,) for directing a beam of light from a light source (,) into said eye thereby to project a spot of light onto the latter. The divergence and convergence of the beam can be altered by focusing means (,) movable from a normal position in which the beam is divergent, or converges to a point (in use) behind the eye under examination, to a cross-checking position, in which the beam is convergent on a point which, in use, is sufficiently far in front of the eye under examination to enable the user to detect movement of the patch of light projected onto the retina of said eye where any refractive error in the eye has not been corrected by a lens placed between the eye and the retinoscope. The retinoscope may also be used (with a further light source) as a streak retinoscope.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile