ILLUMINATION APPARATUS, LIGHT SOURCE APPARATUS USING ILLUMINATION APPARATUS, AND IMAGE DISPLAY APPARATUS

摘要

An illumination apparatus includes a wavelength conversion element to convert light emitted from a light source into converted light and to emit the converted light and unconverted light, a first optical element including a first region guiding the light emitted from the light source to the wavelength conversion element and a second region preventing the unconverted light from traveling to the light source, and a second optical element to guide the converted light in a direction different from a direction of the light source while guiding the light emitted from the light source to the wavelength conversion element. The second optical element is disposed in an optical path between the first optical element and the wavelength conversion element. The light emitted from the light source is incident on the first region, and the unconverted light is incident on both the first region and second region of the first optical element.

主权项

1. An illumination apparatus comprising:
a wavelength conversion element configured to convert at least part of light emitted from a light source into converted light having a wavelength different from a wavelength of the light emitted from the light source and to emit the converted light and unconverted light having the same wavelength as the wavelength of the light emitted from the light source; a first optical element including a first region configured to guide the light emitted from the light source to the wavelength conversion element and a second region configured to prevent the unconverted light from traveling to the light source; and a second optical element configured to guide the converted light in a direction different from a direction of the light source while guiding the light emitted from the light source to the wavelength conversion element; wherein the second optical element is disposed in an optical path between the first optical element and the wavelength conversion element; wherein the light emitted from the light source is incident on the first region of the first optical element and the unconverted light is incident on both the first region and the second region of the first optical element.