| US 7,500,753 B2 | ||
| Optical system for a fundus camera | ||
| Lothar Mueller, Ottendorf (Germany); Marco Hanft, Jena (Germany); and Uwe Lippmann, Jena (Germany) | ||
| Assigned to Carl Zeiss Meditec AG, Jena (Germany) | ||
| Appl. No. 10/552,756 PCT Filed Mar. 19, 2004, PCT No. PCT/EP2004/002893 § 371(c)(1), (2), (4) Date Jun. 20, 2006, PCT Pub. No. WO2004/090606, PCT Pub. Date Oct. 21, 2004. |
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| Claims priority of application No. 103 16 416 (DE), filed on Apr. 10, 2003. | ||
| Prior Publication US 2006/0227435 A1, Oct. 12, 2006 | ||
| Int. Cl. A61B 3/10 (2006.01) | ||
| U.S. Cl. 351—221 [359/433; 351/205; 351/206] | 6 Claims |
| 1. A fundus camera comprising an optical system with a substantially coaxial illumination beam path and imaging beam path,
the optical system comprising:
a lens system of at least four lenses;
wherein at least two lenses of the at least four lenses are tilted with respect to their optical axes relative to the illumination
beam path and imaging beam path;
wherein the optical axes of the two lenses and optical axis of the illumination beam path and imaging beam path lie in a first
plane;
wherein at least two other lenses of the at least four lenses are tilted with respect to their optical axes relative to the
illumination beam path and imaging beam path;
wherein the optical axes of the two other lenses and optical axis of the illumination beam path and imaging beam path lie
in a second plane which intersects the first plane substantially along the optical axis of the illumination beam path and
imaging beam path; and
wherein the optical axis of the illumination beam path and imaging beam path penetrates the lens outside their optical axes.
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