US 12,242,140 B2
Logarithmically incremented magnifiers for low vision rehabilitation
David Charles Lewerenz, Denver, CO (US); and Gregory Robert Hopkins, II, Columbus, OH (US)
Filed by David Charles Lewerenz, Denver, CO (US); and Gregory Robert Hopkins, II, Columbus, OH (US)
Filed on Aug. 26, 2021, as Appl. No. 17/412,673.
Claims priority of provisional application 63/070,790, filed on Aug. 26, 2020.
Prior Publication US 2022/0221737 A1, Jul. 14, 2022
Int. Cl. G02C 7/06 (2006.01); A61B 3/032 (2006.01); G02C 7/02 (2006.01); G02B 25/02 (2006.01)
CPC G02C 7/061 (2013.01) [A61B 3/032 (2013.01); G02C 7/022 (2013.01); G02C 7/028 (2013.01); G02B 25/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
providing a set of stand magnifiers, the set including a sequence of evenly incremented enlargement ratio values, including:
a magnifier having a lowest value (MAG0),
a magnifier having a highest value (MAGN), and
one or more magnifiers having in between values, wherein the log-increment between any two successive magnifiers of the set is equal to K(0.1) log of enlargement ratio, where K is an integer >0 or a fraction whose denominator is an integer >0,
wherein at least one of:
the value of MAG0 is +2.0×;
the value of MAGN is +16.0×; or
the lowest enlargement ratio of the set is 1.6×, the highest enlargement ratio of the set is 16.0×, and there are nine magnifiers with enlargement ratio values in between.