US 12,128,641 B2
Methods for the manufacture of photoabsorbing contact lenses and photoabsorbing contact lenses produced thereby
Brian Aitken, Jacksonville, FL (US); Jeffrey D. Caltrider, Neptune Beach, FL (US); Leilani K. Sonoda, Atlantic Beach, FL (US); Robert MacDonald Smith, Jacksonville, FL (US); and Donnie J. Duis, Jacksonville, FL (US)
Assigned to Johnson & Johnson Vision Care, Inc., Jacksonville, FL (US)
Filed by Johnson & Johnson Vision Care, Inc., Jacksonville, FL (US)
Filed on May 19, 2023, as Appl. No. 18/320,366.
Application 18/320,366 is a continuation of application No. 16/805,931, filed on Mar. 2, 2020, granted, now 11,724,471.
Claims priority of provisional application 62/825,050, filed on Mar. 28, 2019.
Prior Publication US 2023/0286232 A1, Sep. 14, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. B29D 11/00 (2006.01); G02C 7/02 (2006.01); G02C 7/04 (2006.01); G02C 7/10 (2006.01); H05B 45/12 (2020.01); B29K 33/00 (2006.01); B29K 83/00 (2006.01); B29K 105/00 (2006.01)
CPC B29D 11/00038 (2013.01) [B29D 11/00634 (2013.01); G02C 7/028 (2013.01); G02C 7/04 (2013.01); G02C 7/10 (2013.01); H05B 45/12 (2020.01); B29K 2033/12 (2013.01); B29K 2033/26 (2013.01); B29K 2083/00 (2013.01); B29K 2105/0002 (2013.01); B29K 2995/0018 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for manufacturing a photoabsorbing contact lens, the method comprising:
(a) providing a mold assembly comprised of a base curve and a front curve, the base curve and the front curve defining and enclosing a cavity therebetween, the cavity containing a reactive mixture, wherein the reactive mixture comprises at least one polymerizable monomer, a photoinitiator which absorbs at an activating wavelength, and a photoabsorbing compound which displays absorption at the activating wavelength; and
(b) curing the reactive mixture to form the photoabsorbing contact lens by exposing the reactive mixture to radiation that includes the activating wavelength, wherein the radiation is directed at both the base curve and the front curve of the mold assembly, and wherein the radiation's radiant energy at the base curve is greater than the radiation's radiant energy at the front curve,
wherein the photoabsorbing contact lens has a root mean squared optical path wavefront deviation from lens design target with spherical and cylindrical power as well as coma removed as measured using a 6.5 millimeter aperture that has been reduced as compared to an otherwise identical lens made under conditions of equal radiant energy at the base and front curves.