JPH05249383A - Binocular system enlarging optical device - Google Patents

Abstract

PURPOSE:To provide an optical device capable of enlarging and observing a close object with both eyes. CONSTITUTION:A triangular reflecting member 6 is arranged on a center part in front of a pair of left and right optical lens systems which are obtained by combining objective lenses 2L, and 2R and eyepieces 1L and 1R, and a pair of relay lenses 7L and 7R having the same focal distance as that of the objective lens of the optical lens system are arranged on both left and right sides of the triangular reflecting member 6 so that the luminous flux from the object may be divided and made incident on left and right relay lenses 7L and 7R and also the rectilinearly propagating light passing through the relay lenses 7L and 7R may be made incident on the left and right optical lens systems by use of reflective mirrors 8L and 8R by a prescribed angle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a binocular optical device for magnifying and observing a close object such as a magnifying glass.

[0002]

Since the conventional magnifying glass for magnifying and observing a near object has a structure for observing with one eye,
It is difficult to observe, and eyes become very tired in a short time. Therefore, the work is inefficient and there is a problem in terms of eye protection.

An object of the present invention is to provide an optical device capable of magnifying and observing a near object with both eyes, and thereby to solve the above problems.

Another object of the present invention is to provide the above-mentioned optical device in which the front and rear positions and the left and right positions of the left and right optical lens systems can be arbitrarily set without affecting the image.

[0005]

In order to achieve the above object, the binocular magnifying optical apparatus of the present invention has an erecting image member interposed between an objective lens and an eyepiece lens, with a predetermined interval. A pair of left and right optical lens systems arranged in parallel; a triangular reflecting member disposed in the front center of the pair of left and right optical lens systems with their vertices facing the light incident side; and the objective of the pair of optical lens systems A pair of objective relay lenses, which are arranged on the left and right of the triangular reflecting member in a direction opposite to the objective lenses corresponding to the lenses; A pair of left and right reflecting mirrors that enter the objective lens of the lens system are provided, and the light flux from the object at the focal position of the pair of objective relay lenses is distributed to the pair of left and right objective relay lenses via the triangular reflecting member. Is incident Characterized in that way the. More preferably, at least a part of the light flux of the object at the focal position of the objective relay lens is commonly incident on the pair of left and right objective relay lenses.

[0006]

[Function] A light beam from an object is distributed and incident on a pair of left and right objective relay lenses through a triangular reflecting member, and at the same time,
The straight light emitted from the relay lens is incident on the pair of left and right optical lens systems by the left and right reflecting mirrors. Therefore, the image of the object is formed as a pair at the focal position of the objective lens of the pair of optical lens systems and magnified by the left and right eyepieces. By setting the pair of optical lens systems at the interpupillary distance between both eyes, a close object is magnified and observed by both eyes.

Since the objective lens and the relay lens having the same focal length are opposed to each other at a predetermined angle via the reflecting mirror, no matter how the distance between the relay lens and the objective lens is changed, the image formation is not affected. Therefore, the position of the optical lens system in the optical axis direction and the interpupillary distance can be arbitrarily set.

When all or part of the light flux of an object is made to enter the left and right relay lenses in common, all or part of the object is stereoscopically magnified and observed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an optical configuration diagram of an optical device according to the present invention, in which 1L and 1R correspond to a pair of left and right eyepieces 2L and 2R, which are arranged with a left and right interpupillary distance, respectively. It is an objective lens arranged in the front. Eyepiece lens 1L and objective lens 2
Erect image members 3L and 3R such as Porro prisms and Porro mirrors between L and between the eyepiece lens 1R and the objective lens 2R.
Are arranged one by one, and a pair of optical lens systems 4a, 4b composed of the eyepiece lens, the erecting image member and the objective lens are arranged on the left and right lens barrels 5a, 5b of the casing 5.
It is stored in.

At the front center of the pair of optical lens systems 4a and 4b, a triangular reflecting member 6 such as a reflecting prism is arranged with its apex facing the light incident side.

A pair of objective relay lenses 7L and 7R having the same focal length as the objective lenses 2L and 2R of the pair of optical lens systems 4a and 4b are provided on the left and right sides of the triangular reflecting member 6, respectively. It is provided corresponding to
These objective relay lenses 7L and 7R are arranged in opposite directions so that the corresponding objective lenses 2L and 2R and the convex lens surfaces thereof face each other via a reflection mirror described later, and the optical axes of the objective lenses 7L and 7R correspond to each other. They are arranged so as to intersect with the optical axis at a predetermined angle (right angle in the illustrated embodiment).

A pair of left and right reflecting mirrors 8L and 8R are installed between the left and right objective relay lenses 7L and 7R and the corresponding left and right objective lenses 2L and 2R, and pass through the objective relay lenses 7L and 7R. The light flux is bent by a corresponding objective lens 2a, 2b at a set angle to enter the light.

In the pair of left and right objective relay lenses 7L and 7R and the triangular reflecting member 6, the image of the object 9 at the focal position of the objective relay lenses 7L and 7R is a pair of left and right objective relay lenses 7.
It is arranged so that the light is distributed to L and 7R to be incident. Practically, it is arranged so that all or part of the image of the object 9 is commonly incident on the left and right objective relay lenses 7L and 7R, so that the object image can be viewed three-dimensionally. Is more preferable.

In the illustrated embodiment, as shown in FIGS.
The light fluxes D ₂ and D _{2 of the} left and right relay lenses 7L and 7R are the objects 9
Image D ₁ of the relay lens 7L and 7R are set so as to overlap with each other, and the entire image of the object 9 at the focal position of the relay lenses 7L and 7R is commonly incident on the left and right relay lenses 7L and 7R via the triangular reflecting member 6. It is like this. Incidentally, in the drawing, 11, 12
Reference numerals a and 12b are diaphragms.

With the above structure, the objective relay lens 7L,
The light from the object 9 at the focal position of 7R is incident on both the pair of left and right objective relay lenses 7L and 7R arranged in the opposite direction to the objective lenses 2L and 2R via the triangular reflecting member 6. The light beams emitted from the left and right objective lenses 7L and 7R are reflected at right angles by the mirrors 8L and 8R, are incident on the objective lenses 2L and 2R of the left and right optical lens systems 4a and 4b, and images are formed at the focal positions 10L and 10R. At the same time, it is magnified by the eyepiece lenses 1L and 1R. Thus, by setting the left and right eyepieces 1L and 1R to the eye width of both eyes, the image 9 is magnified and observed with both eyes.

Objective lenses 2L, 2R and relay lens 7
Since L and 7R have their convex lens surfaces opposed to each other at a predetermined angle via the reflecting mirrors 8L and 8R, the relay lens 7
The straight traveling lights emitted from L and 7R are reflected by mirrors 8L and 8R and are directly incident on the objective lenses 2L and 2R.
Therefore, the relay lenses 8L, 8R and the objective lenses 2L, 2
R is the distance between the reflecting mirrors 8L and 8R, that is, the optical lens system 4 even if the distance between the relay lens and the objective lens is changed.
Since it does not affect the image formation of a and 4b, the optical lens system 4a,
The interval of 4b and the front-back position can be set arbitrarily.

[0017]

The optical device of the present invention allows an image of a near object to be magnified and viewed with both eyes, so that it is easy to observe, and even if it is observed for a long time, the eye is less likely to get tired. Therefore, there are excellent advantages in both work efficiency and health.

Since all or part of the object image is observed by both eyes, a stereoscopic image can be obtained and more accurate observation can be performed.

Since the distance between the objective lens and the relay lens can be set arbitrarily, the members can be easily arranged, and the interpupillary distance between the left and right eyepieces can be freely changed.

[Brief description of drawings]

FIG. 1 is an optical configuration diagram according to an embodiment of the device of the present invention.

FIG. 2 is an explanatory diagram of an optical operation according to an embodiment of the device of the present invention.

[Explanation of sign]

1L, 1R ... Eyepiece lens, 2L, 2R ... Objective lens, 3L, 3R ... Erecting image member, 4a, 4b ...
Optical lens system, 5 ... Casing, 6 ... Triangular reflecting member, 7L, 7R ... Objective relay lens, 8L,
8R ... Reflective mirror, 9 ... Object, 10a, 10b ... Imaging, 11, 12a, 12b ... Aperture,

Claims (2)

[Claims] 1. A pair of left and right optical lens systems in which an erecting image member is interposed between an objective lens and an eyepiece lens and arranged in parallel at a predetermined interval; A triangular reflecting member having its apex directed toward the light incident side; and corresponding to the objective lenses of the pair of optical lens systems, the triangular reflecting members are provided on the left and right sides of the triangular reflecting member in the opposite direction to the objective lens. A pair of objective relay lenses; and a pair of left and right reflecting mirrors for reflecting the light fluxes passing through the respective objective relay lenses at a predetermined angle to enter the objective lenses of the corresponding optical lens system. A binocular characterized in that a light flux from an object at a focal position of a relay lens is distributed and made incident on a pair of left and right optical lens systems via the triangular reflection member, the left and right relay lenses, and the left and right reflection mirrors. Formula magnifying light Equipment 2. The binocular according to claim 1, wherein all or a part of the light flux of the object at the focal position of the objective relay lens is made incident on both of the pair of left and right relay lenses through the triangular reflecting member in common. Magnifying optical device