Optical: systems and elements – Compound lens system – Microscope
Reexamination Certificate
2000-02-25
2001-12-04
Nguyen, Thong (Department: 2872)
Optical: systems and elements
Compound lens system
Microscope
C359S368000, C359S380000
Reexamination Certificate
active
06327080
ABSTRACT:
BACKGROUND OF THE INVENTION
(a) Field of the Invention
In many conventional microscopes, the height of the tube eyepiece is not ergonomically favorable for all persons. When using commercially available tubes with a binocular part which is adjustable with respect to angle, the viewing height changes only within a limited area, while the viewing angle can be optimally adjusted to the needs of the user. Viewing height and viewing angle are rigidly dependent on one another. In many cases, this leads to unsatisfactory conditions in ergonomic respects.
(b) Description of the Related Art
Many microscope manufacturers solve the problem of height adaptation by means of intermediate pieces of different heights, with and without compensating optics. The disadvantage herein consists in that only fixed values of the viewing height can be realized, and this is only possible by changing intermediate pieces of different heights.
OBJECT AND SUMMARY OF THE INVENTION
It is the primary object of the invention to improve ergonomic conditions for the microscope user.
This object is met in a microscope in accordance with the invention with an exchangeable intermediate tube that is inserted between the microscope objective and an ocular eyepiece instead of the tube lens and which is adjustable in a defined manner with respect to its height and has relay or transfer optics with an essentially constant intersection length.
REFERENCES:
patent: 3997239 (1976-12-01), Scherzer
patent: 4652094 (1987-03-01), Kitajima
patent: 4779967 (1988-10-01), Murphy et al.
patent: 5296962 (1994-03-01), Furuhashi
patent: 5519531 (1996-05-01), Sato
patent: 5532872 (1996-07-01), Sakamoto et al.
patent: 341 59 58 A1 (1985-03-01), None
patent: 34 02 354 (1985-07-01), None
patent: 195 13 870 A1 (1996-10-01), None
patent: WO 98/21616 (1998-05-01), None
*English Abstract of DE 341 59 58 A1.
*English Abstract of DE 195 13 870 A1.
Brinkmann Hans
Dietrich Peter
Dobschal Hans-Juergen
Herbst Georg
Ozimek Heinz
Carl Zeiss Jena GmbH
Nguyen Thong
Reed Smith LLP
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