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US 2020/0345418 A1Published application
Light based skin treatment device
AssigneeKoninklijke Philips N.V.
InventorsBABU VARGHESE, RIEKO VERHAGEN
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Abstract
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.
Claims19
A light-based skin treatment device comprising:
- a laser light source configured to provide a pulsed incident light beam for treating skin by laser induced optical breakdown of hair or skin tissue;
- and
- a focusing system configured to focus the incident light beam into a focal spot in the hair or skin tissue,
- wherein the focusing system comprises an exit focusing lens having a central aperture with a diameter less than 1 mm.
1 more element
A light-based skin treatment method comprising:
- providing a pulsed incident light beam for treating skin by laser induced optical breakdown of hair or skin tissue;
- focusing the incident light beam into a focal spot in the hair or skin tissue by focusing using an exit focusing lens having a central aperture with a diameter of less than 1 mm.
Dependencies are inferred from the claim text.