Dermoscopy illumination device with selective polarization and orange light for enhanced viewing of pigmented tissue
US9458990B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 1, 2013 |
| Grant date | Oct 4, 2016 |
| Priority date | — |
| Expiry date | Aug 1, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21W2131/20
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An illumination device used in dermoscopy for enhanced imaging and illumination of the skin for medical examination and treatment. An array of LEDs encircle a magnifying lens assembly. One set of surrounding LEDs provides cross-polarized white light to aid in canceling the reflected light from the skin and creating less glare. Another set of surrounding LEDs provides non-polarized white light for traditional immersion fluid dermoscopy or for non-polarized viewing of the skin. A third set of surrounding LEDs provides polarized colored light, wherein the wavelength color is selected at a color wavelength that maximizes the viewing of skin pigment regions which is important for early detection of skin cancers and other skin diseases. In one embodiment, the colored LEDs comprise orange light at a wavelength in the range of 581 nm to 600 nm wavelengths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.