JPH0518728Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a magnifying glass having two folding lenses.

BACKGROUND OF THE INVENTION Devices that combine two lenses for both eyes are well known as eyeglasses, and among them, eyeglasses that use convex lenses are magnifying glasses. Furthermore, magnifying glasses that can be used with two or more different magnifications by incorporating a plurality of lenses in a foldable manner are known in the art.

Problems that the invention aims to solve Although the known folding magnifier incorporating multiple lenses can change the magnification from low to high magnification, it is intended to be used with only one eye. It is of a unique design.

The purpose of the present invention is to provide a convenient magnifying glass that can change the magnification and can be used with either one eye or both eyes.

Means for Solving the Problems The above-mentioned object, according to the present invention, comprises two lenses and a handle, and each lens is attached to an end of the handle so that the optical axes of the lenses coincide with each other. Achieved by magnifying glasses mounted pivotably between a position in which they are superimposed on each other and a position in which the optical axes of the lenses are spaced apart from each other by a distance corresponding to the distance between the centers of a person's eyes. be done.

Effects and Effects of the Invention According to the above-described configuration, by pivoting the two lenses of the magnifying glass with respect to the handle and overlapping each other, a monocular lens with a large magnification ratio can be obtained by overlapping the magnification powers of both lenses. If magnification is obtained and the two lenses are pivoted relative to the handle and spaced apart from each other,
A binocular magnifying glass is obtained due to the magnification of each single lens.

Embodiments Hereinafter, the present invention will be described in detail with reference to embodiments with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a magnifying glass according to the present invention in which two lenses are superimposed. The magnifying glass 10 has two lenses 12 and a handle 14, the two lenses 12 being pivotally attached to the ends of the handle 14 by screws 16.

A groove 18 is provided at the end of the handle 14 along a plane passing through the axis, one end of each of the two lenses 12 is held in the groove 18, and a screw 16 passes through the handle 14 and the lens 12. and has been extended. The tightening force of the screw 16 is adjusted so that the lens 12 can be freely pivoted by hand and the lens 12 can be held in a fixed position.

Other means of coupling for pivotally attaching the lens to the handle may be used, such as engagement means that fit snugly into each other at each end of the lens and handle. Such coupling means may be of any type as long as the lens is capable of freely pivoting relative to the handle, but preferably one with adjustable clamping force, such as a screw.

When the magnifying glass is in the state shown in FIG. 1, the optical axes of the two lenses are aligned with each other, thereby providing a high magnification.

FIG. 2 shows the magnifying glass shown in FIG. 1 with its two lenses expanded so that it can be used with both eyes.

In this state, the lens 1 is changed from the state shown in FIG.
This is accomplished by manually pivoting the two apart. In this case, when the lenses are pivoted from the state shown in FIG. 1 to be spaced apart from each other and are pivoted to a position where the edges of the lenses abut the edges of the grooves 18 provided in the handle 14 and cannot move any further. , it is convenient to set the two lenses so that they are expanded 180 degrees from the overlapping state shown in Figure 1.

In this embodiment, the edge of the groove in the handle acts as a stop to limit the pivot angle of the lens, but other types of stops may be provided.

The magnifying glass 10 is designed such that when the lens 12 is in such an expanded state, the distance between the optical axes of the lenses is exactly the distance corresponding to the distance between the human eyes, so that the magnifying glass It is in a state suitable for use with both eyes.

3 and 4 are plan views showing essential parts of another embodiment of the magnifying glass according to the present invention. In the embodiment of FIG. 3, an elliptical lens is used, and in the embodiment of FIG. 4, a lens with a handle for a pivot point is used. In either case, the optical axes of the two lenses are aligned with each other when the lenses are in the overlapping state, and the optical axes of the two lenses are aligned with each other when the lenses are in the expanded state as shown in FIGS. The distance between the optical axes of is configured to correspond to the distance between the human eyes.

In the above, the present invention has been described with respect to a magnifying glass consisting of two lenses and a handle, but the present invention may be implemented with other embodiments as long as the above-mentioned functions can be provided. . For example, the number of lenses may be three or more, with one lens acting as a handle to hold the other two lenses in the expanded position. Furthermore, the handle may be configured to form a lens frame for protecting the lens.
Each member may be made of any material, such as plastic, as long as the objects of the invention are achieved and the functions described above are provided.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a magnifying glass according to the present invention with its two lenses superimposed. FIG. 2 is a perspective view showing the magnifying glass shown in FIG. 1 in an expanded state. FIGS. 3 and 4 are plan views showing the main parts of a magnifying glass using another type of lens. 10...magnifying glass, 12...lens, 14...handle, 16...screw, 18...groove.

Claims (1)

[Scope of utility model registration request] It has two lenses and a handle, and the lenses are placed at the end of the handle so that the optical axes of the lenses coincide with each other, and the optical axes of the lenses are aligned with each other. A magnifying glass mounted pivotably between positions spaced apart from each other by a distance corresponding to the center-to-center distance.