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:
Oct. 06, 2020
Filed:
May. 13, 2016
Shinko Seiki Co., Ltd, Kobe, JP;
Hiroshi Yuuki, Kobe, JP;
Shinko Seiki Co., Ltd, Kobe, JP;
Abstract
To realize highly reliable examination by means of an apparatus free of troublesome adjustment of which structure as a whole is simple. The examination contributes to early discovery of glaucoma in particular. Light emitted from a matrix-type light-emitting diode unitis projected onto an eye to be examined through a liquid crystal shutterand a main optical system. The matrix-type light-emitting diode unitincludes a plurality of light-emitting diodes devices, of the same specifications arranged in a matrix array. The light-emitting diode devicesare independently controlled to form an image for use in the examination. The image includes a circular visual targetand a backgroundwhich is a remaining portion of the image. The visual targetflickers generally sinusoidally at a frequency between 1 Hz and 200 Hz. With this arrangement, highly reliable examination contributing to early discovery of glaucoma is realized. The structure of the apparatus as a whole is simple, and no troublesome adjustments are required.