A method of designing optical systems and corresponding optical system

摘要

An optical system including at least one light source, such as a LED source (10), and an optics (30) subjected to aging as a result of exposure to the light source (10) is designed by:
- defining an aging model for the optics (30),
- defining a thermal model for the light source (10, 100) as a spatial function representative of the temperature generated by the light source (10, 100), and
- defining the distance of the optics (30) from the light source (10) as a function of the aging model and the thermal model.
The optical overall system (single or multiple reflector and lens)is finally optimised starting from the results achieved in the previous steps.