Lighting apparatus with filter

Details Lighting apparatus with filter Lighting apparatus with filter

2005-03-01

2009-12-01

Hines, Anne M (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S498000

Reexamination Certificate

active

07626327

ABSTRACT:
A lighting apparatus which improves identification of living body tissues, and is suitable for medical lighting. In the lighting apparatus, the light output in a range of wavelength 525 to 590 nm is not greater than ⅕ of the light output in a range of wavelength 380 to 780 nm corresponding to visible light components. The peak wavelength of a blue or bluish green light component included in the output light is in a range of 430 to 520 nm, and the peak wavelength of a red light component is not less than 600 nm. A green light component has the peak in a range of wavelength 520 to 590 nm, its spectral half-value width is not greater than 70 nm, and the light amount of at least the green light component can be independently adjusted.

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