Mirror system with four reflections, especially as telescope for astronomy or space applications
DE19640327A1
Ultra-compact catadioptric lens with low center obstruction
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Catadioptric lens with spherical hollow mirror and lens corrector
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Catadioptric lens
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Mirror lens, especially for observatory cameras
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Mirror system for astronomical telescope
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Compact super wide angle eyepiece with flat field of view
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Mirror lens comprising mirror system
WO9630795A1
Aplanatic and anastigmatic mirror systems
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Catadioptric lens
EP0801758A1
Universal two-mirror corrector for cassegrain-type mirror systems
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Optical system with a high degree of symmetry
WO9519582A1
Quasi-concentric mirror system
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Aplanatic and anastigmatic mirror system with a plane image field
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Quasi-concentric mirror arrangement, e.g. for telescope - has small scattering mirror with central hole which reflects light onto collector mirror, and is anastigmatic
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Mirror system with all radii concentric to common centre point - is completely free of coma, astigmatism and distortion, if no symmetry break is present
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Aplanatic, anastigmatic, distortion-free mirror system with even picture field - comprises three mirror system with elliptical main mirror and hyperbolic diffusion mirror arranged in cassegrain configuration producing intermediate picture
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Symmetrical concentric lens system with optimal aberration correction - has e.g. central sphere with 46 per cent of radius of outer shell of different glass for diffraction-limited error-free imaging
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Aplanatic and anastigmatic mirror system with even picture field - uses collecting hyperbolic mirror, diffusing parabolic mirror, with light bunch falling finally on collecting spherical mirror.
