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US 2009/0154155 A1Published application
Optical projection device
AssigneeOSRAM Opto Semiconductors GmbH
InventorStefan Grotsch
Life of this patent
Estimating the term…
Abstract
The invention relates to an optical projection device. Said optical projection device comprises a plurality of light-emitting diode chips and at least one optical element comprising a light input surface which is associated with at least one of the light-emitting diode chips. The light decoupling surface of the light-emitting diode chip, which is adapted to the refraction index, is optically connected to the light input surface of the associated optical element.
Claims20
An optical projection device comprising:
- a plurality of light-emitting diode chips;
- and
- at least one optical element with a light input surface which is associated with at least one light-emitting diode chip, a light decoupling surface of the light-emitting diode chip being optically connected, adapted to a refraction index of the optical element, to the light input surface of the associated optical element.
An optical projection device comprising:
- a first light-emitting diode chip;
- a first optical element with a light input surface which is associated with the first light-emitting diode chip, a light decoupling surface of the first light-emitting diode chip being optically connected to the light input surface of the first optical element, wherein a gap between the light decoupling surface of the first light-emitting diode chip and the light input surface of the first optical element is filled with at least one material whose refraction index is at least 1.3;
- a second light-emitting diode chip;
- and
- a second optical element with a light input surface which is associated with the second light-emitting diode chip, a light decoupling surface of the second light-emitting diode chip being optically connected to the light input surface of the second optical element, wherein a gap between the light decoupling surface of the second light-emitting diode chip and the light input surface of the second optical element is filled with at least one material whose refraction index is less than 1.3.
2 more elements
Dependencies are inferred from the claim text.