Laser diode device for projection system, has crystalline protective layer made of dielectric material is formed on radiation uncoupling surface of laser diode chip which is provided on mounting element

摘要

The laser diode device (100) has mounting element (11) that is connected to housing section (10) which is coated with steel. A laser diode chip (2) is provided on the mounting element on a substrate. The substrate is provided with semiconductor layers having active layer for emitting light. The mounting element is provided with base structure made of copper. A solder layer (3) with thickness of not less than 2 mu m is arranged between the chip and mounting element. A crystalline protective layer made of dielectric material is formed on radiation uncoupling surface of the chip.