United States Patent 19 11 Patent Number: 5,729,323 Arden Et Al
USOO5729323AIII United States Patent 19 11 Patent Number: 5,729,323 Arden et al. 45) Date of Patent: Mar. 17, 1998 54 LGBT ABSORBNG AND ANT 558763 2/1975 Switzerland. REFLECTIVE COATING FOR SUNGLASSES 2247691 3/1992 United Kingdom. OTHER PUBLICATIONS 75 Inventors: Amy J. Arden; Michael J. Cumbo, both of Rochester, N.Y. Chemical Abstracts, vol. 110, No. 7, Apr 3, 1989. A. Thelen, Design of Optical Interference Coatings 73 Assignee: Baush & Lomb incorporated, (McGraw-Hill, NY. 1989), pp. 103-107. Rochester, N.Y. H. A. Macleod, "A new approach to the design of metal-di electricthin-film optical coatings". Optica Acta, vol. 24, No. 21 Appl. No.: 283,009 2 (1978), pp. 93-106. P. H. Berning et al., "Induced Transmission in Absorbing 22 Filed: Jul. 29, 1994 Films Applied to Band Pass Filter Design”. J. Opt. Soc. (51) Int. Cl. ... G02C 7/10; G02B 1/10 Amer, vol. 47. No. 3 (1957), pp. 230-239. (52) U.S. Cl. ...................................... 351/163; 359/586 Primary Examiner-Scott J. Sugarman (58) Field of Search ..................................... 351/163, 164, Attorney, Agent, or Firm-Chris P. Konkol; Katherine 351/165; 3591586, 589 McGuire; John E. Thomas 56) References Cited (57) ABSTRACT U.S. PATENT DOCUMENTS A sunglass lens having improved anti-reflection and trans mittance comprises a lens-shaped substrate and a coating 4,261,645 4/1981 Sawamura et al. ..................... 359/586 4,802,755 2/1989 Hensler ............ ... 351/163 formed on the concave surface of the lens. The first layer 5,190,896 3/1993 Pucillowski ... 501/64 deposited adjacent to the concave surface of the lens com 5,362.552 11/1994 Austin ....................................
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