Projection

I started 1998 working with DLP optics in the dark basement of the Carl Zeiss Jena (Bau 6-70), experimenting with projection lenses (clocking !) and illumination stuff. I quickly blew up some fuses and got a sunburn from new lamps. Later I found a way to get a better match between a lamp reflector and a projector optics without urging the customer to disclose the design of the latter. Lens design for projection has some special requirements : • no vignetting • lateral color is much more important than axial color • no color temperature shift (you don‘t want to have a yellow image) • mostly a mini zoom (just to claim to have a zoom but to not disturb a cost efficient optical design) • some rather harsh design rules (for instance, center thickness to diameter limitations) to enable high yield large volume production Of course, one would always strive for a pupil match between the illumination system and the projection lens. This is only approximately possible in the DLP case but can be easily realized for other projectors.

Stage lighting

In stage and architectural lighting, you often have just two lenses and call it a „zoom“. What performance can you expect ?

Stray Light Analysis

necessary part of almost every lens design, but carried out with Illumination Tools. Look there !

Endoscopy

The current trend is Chip-on -Tip (CoT) to get rid of any costly fiber optic image bundles or the notorious rod lens systems of the rigid endoscopes. An oblique view prism is part of the objective lens. Look here :