DLC coating by a high transmittance in the infrared region is applied to the IR Optical System window. In order to
apply to the window, durability is needed. Depending on the surrounding environment, the coating can come off. In
particular, ambient temperature, humidity, may occur because of chemical contamination. If you encounter a problem,
the product is not reliable. Existing environment test is insufficient to assess the durability of DLC coating. We have
devised an enhanced environment tests, test results could be evaluated DLC coating durability.
Now, Military demands focused attention on small and light-weight system development. Above all, UAV(Unmanned
Aerial Vehicle) is necessary to reduce weight of equipments. Therefore, we invest some expense in many years so that it
might design more light optical system for UAV. Consequently, we can build new miniaturization and light-weight
system. The most important thing is the system using just two motors for continuous zoom(x3 ~ x20), NUC(nonuniformity
correction), Narcissus, Athermalization, and auto-focus functions. An MTF (modulation transfer function)
and a detection range are also satisfied by the demands. We use CODE V and NVTherm program for design and analysis.
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