ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,508,075, issued on Dec. 30, was assigned to Koninklijke Philips N.V. (Eindhoven, Netherlands).
"Light based skin treatment device" was invented by Babu Varghese (Eindhoven, Netherlands) and Rieko Verhagen (Vught, Netherlands).
According to the abstract* released by the U.S. Patent & Trademark Office: "A light-based skin treatment device is for treating skin by laser induced optical breakdown of hair or skin tissue. A focusing system has an exit focusing lens for focusing the incident light beam into a focal spot in the hair or skin tissue. This lens has a central aperture. This serves to reduce back-reflectance from the lens surface, which can cause damage to the focusing system."
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