Optical projection device for representation of image information, has light emitting diode chips with light decoupling surface that is optically attached to light entry surface of attached optical unit in refractive index adjustable manner

摘要

The device has multiple light emitting diode chips (1) and an optical unit with a light entry surface, which is attached to the light emitting diode chips. A light decoupling surface of the light emitting diode chips is optically attached to the light entry surface of the attached optical unit in a refractive index adjustable manner. A gap between the light decoupling surface of the light emitting diode chips and the light entry surface of the attached optical unit is filled with a material, which exhibits a refractive index of 1.3.