Wavelength converter, light source apparatus, and projector
AssigneeSeiko Epson Corporation
InventorKoichi Akiyama
Life of this patent
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Abstract
A wavelength converter includes a wavelength conversion layer formed of a ceramic phosphor and having a light incident surface on which excitation light is incident and a light exiting surface which faces the light incident surface, a light transmitting layer formed integrally with the light incident surface of the wavelength conversion layer, and a light transmitting member provided on a side of the light transmitting layer that is the side on which the excitation light is incident. The light transmitting layer and the light transmitting member are bonded to each other with the aid of optical contact.
Claims14
A wavelength converter comprising:
- a wavelength conversion layer formed of a ceramic phosphor and having a light incident surface on which excitation light is incident and a light exiting surface which faces the light incident surface;
- a light transmitting layer formed integrally with the light incident surface of the wavelength conversion layer;
- and
- a light transmitting member provided on a side of the light transmitting layer that is a side on which the excitation light is incident,
- wherein the light transmitting layer and the light transmitting member are bonded to each other with the aid of optical contact,
- the light transmitting member has a curved surface that protrudes in a direction opposite a traveling direction of the excitation light, and
- a dichroic film that transmits the excitation light and reflects fluorescence emitted from the wavelength conversion layer is provided on the curved surface.
Dependencies are inferred from the claim text.