ATLANTIC BEACH, N.Y.—Dean M. Friedman of Opsales, died unexpectedly Jan. 5 of natural causes at his home here. He was 49 years old.

Friedman was co-founder of Opsales, an Island Park, N.Y. manufacturer of polarized clip-on sunglasses and optical products. During his 27-year tenure at Opsales he created 20 patented optical products, and was responsible for contributing to numerous other patents, according to Opsales.

Friedman was an avid sport fisherman and accomplished boat captain. He is survived by his father, Sidney Friedman, of Oceanside, N.Y. and his mother, Myrna Goodman of Boca Raton, Fla.

Funeral services will be held at Riverside Memorial Chapel at 1450 Broadway, Hewlett, N.Y. on Jan . 11 at 10:00 AM, immediately followed by a graveside service at Mt. Hebron Cemetery at 13004 Horace Harding Expressway, Flushing, N.Y.

Those wishing to pay respects to the family may do so at the home of Sidney Friedman, 3388 Ocean Harbor Dr., Oceanside, N.Y., commencing immediately after the funeral service until the beginning of Friday night Sabbath, and recommencing on Saturday evening at the end of Sabbath and continuing for several days after.

In lieu of flowers, donations can be made to the American Heart Association in Friedman’s memory.