752 
fig. 5 shows -the elements of one of the 8 radially symmetrically placed 
optical train with the symmetric lamp, prism and projection lense. 
Optical design of the Caroussel. Only one of the 
eight optical trains is shown 
1. Central axis. 2. 150 W Xenon lamp. 3. Colourfilter in-between first condensor. 
4. Shutter vane operated by loudspeaker. 5. Second Condensor. 6. Continuous Grey 
wedge for intensity regulation. 7. Small mirror. 8. Condensor system 100 mm. 
9. Film chip 60 mm x 60 mm in filmholder, adjustable in x, y, kappa with 3 
miniature motors. 10. Large mirror under 45°. 11. Pyramid with 8 reflecting facets. 
12. Objective. 13. Small mirror. 14. Large mirror under 40°. 15. Rear projection 
screen 18cm x 18cm. The optical train "3-10" is implemented in eightfold, and 
arranged every 45° about the central axis (i).