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2020-06-04 | Document No.: AN149
Table of contents
Mechanical and optical design resources ..........................................................3
Projection Power with connecting board ..................................5
Projection Power SMT ............................................................13
A. Basic information
OSRAM OSTAR
®
Projection devices are optimized for Étendue-limited systems
that require the highest achievable luminance, such as projection applications.
Since an encapsulation with a material comprising a refractive index >1 may lead
to an increase in effective Étendue, the chips radiate directly into air. To protect
the chips, either a glass cover or a frame with protective tape (which must be
removed before operation) is used.
The design of the OSRAM OSTAR
®
Projection light source is also focused on
thermal optimization, as for the highest current density of max 6A/mm² efficient
cooling is necessary. Please refer to the data sheet for the individual current of
each LED.
OSRAM OSTAR
®
Projection Power devices offer lowest thermal resistance as
the chips are mounted directly on a copper substrate. Since an adequate thermal
