US 2014/0177217 A1 · LED ILLUMINATION DEVICE AND LED LIGHT-EMISSION MODULE

Abstract

An illumination device and a light-emission module suppressing a change in color temperature when light emitted from a light-emission unit passes through an optical member. The illumination device has a lighting apparatus that includes: a first light-emission part emitting light of a daylight color temperature; a second light-emission part emitting light of an incandescent lamp color temperature; and the optical member, which is disposed on an optical path of the light emitted from the light-emission parts. A correlated color temperature of the light emitted from the second light-emission part is set to 2238 K. Due to this, in a spectrum of the light emitted from the second light-emission part, a maximum intensity within a wavelength range from 400 nm to 500 nm is no greater than one-tenth of a maximum intensity within a wavelength range from 300 nm to 800 nm.

Claims12

Dependent claims

An illumination device comprising:

a first light-emission part that emits light of a first correlated color temperature;
a second light-emission part that emits light of a second correlated color temperature, the second correlated color temperature being lower than the first correlated color temperature;
an optical member that is disposed at least on an optical path of the light emitted from the second light-emission part;
and
a color adjustment unit that adjusts a color of light that is a mixture of the light emitted from the first light-emission part and the light emitted from the second light-emission part by controlling an intensity of the light emitted from the first light-emission part and an intensity of the light emitted from the second light-emission part, wherein
in a spectrum of the light emitted from the second light-emission part, a maximum intensity within a wavelength range from 400 nm to 500 nm is no greater than one-tenth of a maximum intensity within a wavelength range from 300 nm to 800 nm.

3 more elements

A light-emission module comprising:

a substrate;
and
a light-emission unit disposed on the substrate, the light-emission unit including:
a first light-emission part that emits light of a first correlated color temperature;
and
a second light-emission part that emits light of a second correlated color temperature, the second correlated color temperature being lower than the first correlated color temperature, wherein
in a spectrum of the light emitted from the second light-emission part, a maximum intensity within a wavelength range from 400 nm to 500 nm is no greater than one-tenth of a maximum intensity within a wavelength range from 300 nm to 800 nm.

4 more elements

Dependencies are inferred from the claim text.

Led illumination device and led light-emission module

Life of this patent

Led illumination device and led light-emission module

Life of this patent

Abstract

Claims12