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:
Jul. 16, 2024
Filed:
Oct. 02, 2020
Perfect Vision Technology (Hk) Ltd., Tsuen Wan, HK;
Junzhong Liang, Fremont, CA (US);
PERFECT VISION TECHNOLOGY (HK) LTD., Tsuen Wan, HK;
Abstract
Methods and systems for determining a refractive correction for eyeglasses involve obtaining an objective measurement of a wave aberration. The objective measurement includes an objective spherical power (SPH_o), an objective cylinder power (CYL_o), an objective cylinder axis (AXIS_o), and other residual aberrations; and uses objective vision optimization to achieve a best image quality for the eye from the residual aberrations. A prescription cylinder power (CYL_p), is determined using a software module, where an absolute value of CYL_p is less than an absolute value of CYL_o and achieves an acuity of at least 20/20. A prescription spherical power (SPH_s) is determined subjectively by dialing into a phoropter module a cylinder correction according to the prescription cylinder power (CYL_p) from the software module and the objective cylinder axis (AXIS_o) according to the objective aberrometer module. A prescription for an ophthalmic lens of the eyeglasses is generated that includes SPH_s, CYL_p and AXIS_o.