Optical equipment

Optical: systems and elements – Compound lens system – Microscope

Patent

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Details

359399, G02B 2100, G02B 2300

Patent

active

058153110

DESCRIPTION:

BRIEF SUMMARY
TECHNICAL FIELD

The present invention relates to an optical equipment which can be used as a microscope as well as a telescope.


BACKGROUND ART

Conventionally, a detachable attachment which includes an auxiliary lens wherein the attachment can be attached to, for example, the body of a telescope so that the telescope may be used as a magnifier is widely known.
However, an attachment of this type has to be removed from and attached again to the main body of the equipment whenever its usage is switched. Furthermore, it is inconvenient to store and carry.
An attachment of another type is offered in Japanese Utility Model Registration No. 3005217, which relates to an attachment that is capable of changing over its usage between telescope and magnifier by moving its auxiliary lens.
The configuration which calls for removing and re-attaching the attachment for switching its usage between telescope and magnifier presents another problem in that it is not suitable for observation using a prepared slide or the like, because an object to be magnified has to be placed in front of the attachment.
In order to solve the above problems, an object of the present invention is to provide an optical equipment which facilitates changeover of its usage between telescope and magnifier and is also easy to operate when used for microscopic observation.


DISCLOSURE OF INVENTION

The invention comprises an ocular; a first objective lens disposed in front of the ocular; a second objective lens which is disposed in front of the first objective lens and can be selectively shifted between the advanced position where the second objective lens intersects the optical axis of the first objective lens and the retreated position where the second objective lens does not intersect the optical axis of the first objective lens; a holder for supporting an object to be magnified provided in front of the second objective lens; and a mirror which is disposed in front of the holder that supports an object to be magnified, the mirror so disposed as to be selectively shifted between the advanced position where the mirror intersects the optical axis of the first objective lens and the retreated position where the mirror does not intersect the optical axis of the first objective lens. With the configuration as above, the equipment according to the invention can be used as a telescope for looking in the forward direction with its second objective lens and mirror at their respective retreated positions. The equipment can also be used as a telescope for looking laterally with the second objective lens at the retreated position and the mirror at the advanced position. Further, by using the light entering from the side with the second objective lens and the mirror at their respective advanced positions, the equipment can be used as a microscope to observe an object supported by the holder for supporting an object to be magnified. Furthermore, by using the light entering from the front with the second objective lens at the advanced position and the mirror at the retreated position, the equipment can be used as a microscope to observe an object supported by the holder for supporting an object to be magnified.
According to another feature of the invention, the second objective lens and the mirror are capable of rotating between their respective advanced positions and the retreated positions. Therefore, usage of the equipment is speedily changed over in four ways: as a telescope to look in the forward direction, a telescope to look laterally, a microscope using the light entering from the front and a microscope using the light entering from the side.


BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a partially cut out structural drawing of an optical equipment according embodiment of the present invention;
FIG. 2 is an oblique view of said optical equipment;
FIG. 3 is a structural drawing of said optical equipment; and
FIG. 4 is an oblique view of an optical equipment according to another embodiment of the present invention.


BEST MODE FOR CARRYING OUT THE INVENTI

REFERENCES:
patent: 1128761 (1915-02-01), Cornell
patent: 4284327 (1981-08-01), Kraft et al.
patent: 4869021 (1989-09-01), Gregory
patent: 5052788 (1991-10-01), Tachibana
patent: 5515201 (1996-05-01), Omi
patent: 5682567 (1997-10-01), Spruck et al.

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