BAKARAJU RAVI CHANDRA,EHRMANN KLAUS,HO ARTHUR,HOLDEN BRIEN ANTHONY
申请号：
NZ70075113
公开号：
NZ700751A
申请日:
2013.04.05
申请国别(地区):
NZ
年份:
2016
代理人:
摘要：
The present disclosure is directed to lenses, devices, methods and/or systems for addressing refractive error. In one embodiment, the lens has an optical axis, a focal distance and is characterized by an aberration profile about the optical axis. The aberration profile includes higher order aberrations having at least one of a primary spherical aberration component C(4,0) and a secondary spherical aberration component C(6,0). The aberration profile provides, for a model eye with no aberrations and an on-axis length equal to the focal distance: a peak Visual Strehl Ratio (first Visual Strehl Ratio) within a through focus range, and a Visual Ratio that remains at or above a second Visual Strehl Ratio over that through focus range that includes said focal distance. The first Visual Strehl Ratio is at least 0.35, the second Visual Strehl Ratio is at least 0.1 and the through focus range is at least 1.8 Dioptres. A retina image quality (RIQ) is Visual Strehl Ratio measured substantially along the optical axis for at least one pupil diameter in the range 3mm to 6mm, over a spatial frequency range of 0 to 30 cycles/degree inclusive and a wavelength selected from within the range 540 nm to 590nm inclusive.
