Patent
1983-04-11
1985-08-06
Henry, Jon W.
350174, 350502, G02B 2734, G02B 2100
Patent
active
045332207
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to an indicating device able to indicate the data such as the magnification of a lens system, the value of NA, the data or the like within the visual field of a microscope.
BACKGROUND OF THE INVENTION
In the operation of microscopes, an observer needs to confirm the magnification and the value of NA of the lens system to be used upon every exchange of the lens system. Further, according to the necessity, such data as the date or the like have to be photographed on the dry-plate at photographing. Therefore, various indicating devices have been proposed to simplify these operations. However, this kind of conventional indicating device has such a formation wherein a scale or the like is attached to the eyepiece that it is hard to say that it is a flexible indicating device since the indication is fixed. It prevents the smooth operation of microscopes and the information amount is insufficient. Further, such an indicating device as described in Japanese Published Unexamined Patent Application Ser. No. 134816/1980 is so arranged as to put a transparent synthetic resin ring at the image forming position by an objective lens and to illuminate the letters engraved on the ring by a lamp, but it has such a defect as is not smooth in corresponding to the change of informations. An indicating device as described in Japanese published Unexamined Utility Model Application No. 18247/1975 is so arranged with an indicating member formed of liquid crystal in the visual field that it has the defect that the image would become deteriorated by receiving the influence of the indicating member.
Therefore, an object of the present invention is to provide a data indicating device for microscopes able to very clearly present many data informations useful for the operation of microscopes and the observation, record or the like of a sample in the visual field of the eyepiece and to record them in photograph, with a simple operation.
Another object of the present invention is to provide a data indicating device for microscopes wherein the whole data indicating device is integrally assembled in the main body of a microscope to form the whole system compactly.
Still another object of the present invention is to provide a data indicating device for microscopes wherein a part of the data indicating device is arranged in a position independent from the main body of a microscope to enable to use the indicating device of a complicated formation and thereby to enable to increase still more the flexibility of the indication of informations.
DISCLOSURE OF THE INVENTION
The data indicating device, according to the present invention, comprises a data display means arranged outside of an eyepiece barrel and an optical system arranged between an eyepiece and the data display means and capable of projecting the indication displayed by the data display means on the image forming position of a sample image through an objective lens. By this formation, it is possible to display the data informations useful for the operation of microscopes and for the observation and record of the samples very clearly within the visual field of the eyepiece with simple operation, and to record them in photograph.
Further, the above mentioned optical system, according to the present invention, comprises a polarizing prism for dividing the light bundle from the objective lens and the light bundle from the data display means respectively and for making them advance to the eyepiece and a photographing lens, or a prism for making the light bundle from the objective lens and data display means advance to the eyepiece. By this arrangement, the whole data indicating means is able to be integrally assembled in the main body of a microscope and accordingly the whole microscope apparatus is able to be formed very compactly.
Further, the above mentioned optical system, according to the present invention, comprises an optical fiber bundle for leading the light bundle from the data display means to the visual field of the eyepiece.
REFERENCES:
patent: 3671100 (1972-06-01), Bushman et al.
patent: 4057318 (1977-11-01), Schindl
patent: 4113354 (1978-09-01), Yamasita et al.
Dosaka Shinichi
Harada Kenichi
Kikuchi Juro
Kobayashi Yuko
Kurita Hiroyuki
Henry Jon W.
Olympus Optical Co,. Ltd.
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