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. 26, 2009
Filed:
Mar. 08, 2006
Junzhong Liang, Fremont, CA (US);
Junzhong Liang, Fremont, CA (US);
Advanced Vision Engineering, Inc, Fremont, CA (US);
Abstract
Relative MTF scores for an eye are determined by obtaining at least one wave aberration of an eye, calculating at least one modulation transfer function from the wave aberration of the tested eye, specifying image quality of the eye using a relative MTF score system derived from the calculated modulation transfer function of the tested eye and a set of modulation transfer functions from a cohort of eyes with normal visual acuity. Methods for comparing image quality of different eyes under equal conditions and at different pupil sizes include comparing MTF of different eyes for best MTF in all pupil sizes and MTF of different eyes for night vision at a large pupil size that is different from eye to eye.