Layered structure for an infrared emitter, infrared emitter device and detector
AssigneeVaisala Oyj
InventorsHannu Talvitie, Jukka Korhonen, Martti Blomberg
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Abstract
The present publication describes a heat-resistant optical layered structure, a manufacturing method for a layered structure, and the use of a layered structure as a detector, emitter, and reflecting surface. The layered structure comprises a reflecting layer, an optical structure on top of the reflecting layer, and preferably shielding layers for shielding the reflecting layer and the optical structure. According to the invention, the optical structure on top of the reflecting layer comprises at least one partially transparent layer, which is optically fitted at a distance to the reflecting layer.
Claims20
A layered structure suitable for infrared emitter use, comprising:
- a reflecting layer which has a first surface and a second surface, and
- an optical structure on the second surface of the reflecting layer having at least one partially transparent layer as well as at least one intermediate layer, wherein the partially transparent layer is located at a distance from the reflective layer,
- wherein the at least one partially transparent layer is manufactured from a material having an imaginary component of a complex index of refraction larger than 1 at least in the wavelength range of infrared radiation.
An infrared emitter device, comprising:
- a layered structure having a reflecting layer which has a first surface and a second surface, and an optical structure on the second surface of the reflecting layer having at least one partially transparent layer as well as at least one intermediate layer, wherein the partially transparent layer is located at a distance from the reflective layer, and the at least one partially transparent layer is manufactured from a material having an imaginary component of a complex index of refraction larger than 1 at least in the wavelength range of infrared radiation, and
- a means for heating the layered structure.
A detector component, comprising:
- a layered structure having a reflecting layer which has a first surface and a second surface, and an optical structure on the second surface of the reflecting layer having at least one partially transparent layer as well as at least one intermediate layer, wherein the partially transparent layer is located at a distance from the reflective layer, and the at least one partially transparent layer is manufactured from a material having an imaginary component of a complex index of refraction larger than 1 at least in the wavelength range of infrared radiation, and
- a means for measuring the temperature of the layered structure.
Dependencies are inferred from the claim text.