JP3057117U - Magnifying glass - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a magnifier capable of exhibiting a magnifying function even in a liquid such as water. SOLUTION: A transparent plate 3 is disposed on both sides of a convex lens 1 with an air layer 2 interposed therebetween, and an outer peripheral portion of the convex lens 1 and an outer peripheral portion of the transparent plate 3 are liquid-tightly sealed with a sealant layer 5. It is characterized by.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to magnifying glasses such as insect glasses and, more particularly, to a magnifying glass capable of effectively exhibiting a magnifying effect in a liquid such as water.

[0002]

[Prior art]

 Bone glasses provided with a convex lens are usually used for observing insects, plants, ores, etc. in the field, and have a magnifying function, so that it is very convenient to observe fine surface conditions and structures.

[0003]

[Problems to be solved by the invention]

 However, if you put these glasses in water and try to observe objects in the water, the water will come into direct contact with both sides of the convex lens, and the glasses and water will be optically integrated into a continuous transparent body. It has the drawback that it cannot perform the lens function, that is, the magnification function, and cannot perform magnification observation underwater.

[0004] An object of the present invention is to eliminate such disadvantages of the prior art and to provide a magnifier capable of exhibiting a magnifying function even in a liquid such as water.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention arranges a transparent plate made of, for example, glass or a synthetic resin on both sides of a convex lens via an air layer, for example, and arranges an outer peripheral portion of the convex lens and an outer peripheral portion of the transparent plate. It is characterized by being sealed in a liquid-tight manner with a sealant layer such as an acrylic resin.

[0006]

[Embodiment of the invention]

 The present invention has the above-mentioned structure, and when used in liquids such as water, the convex lens and water come into direct contact with each other as in the past, because an air layer is interposed between the convex lens and the transparent plate. Nothing. Therefore, the function of enlarging by the convex lens can be sufficiently exhibited not only in air but also in liquid.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view of a magnifying glass according to the present embodiment.

As shown in FIG. 1, both sides of a convex lens 1 made of glass or a transparent synthetic resin such as an acrylic resin or a polycarbonate resin have, for example, approximately the same size as the convex lens 1 via a narrow air layer 2. Transparent plates 3 and 3 made of glass or a transparent synthetic resin such as an acrylic resin or a polycarbonate resin are arranged.

An annular frame 4 made of synthetic resin or metal is fitted around the convex lens 1 and the outer periphery of the transparent plate 3. The joint between the frame 4 and the transparent plate 3 is sealed in a liquid-tight manner with a sealant layer 5 having excellent water resistance, such as an acrylic adhesive or an epoxy-based adhesive. Waterproof to prevent entry. A handle 6 is attached to the frame 4.

[0010]

[Effect of the invention]

 The present invention is configured as described above, and when used in a liquid such as water, the air layer 2 is interposed between the convex lens 1 and the transparent plate 3. No direct contact between the lens 1 and water. Therefore, the function of enlarging by the convex lens 1 can be sufficiently exhibited not only in air but also in liquid, which is convenient.

[Brief description of the drawings]

FIG. 1 is a sectional view of a magnifying glass according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Convex lens 2 Air layer 3 Transparent plate 4 Frame 5 Sealant layer 6 Handle

Claims (1)

[Utility model registration claims] 1. A transparent plate is disposed on both sides of a convex lens via an air layer, and an outer peripheral portion of the convex lens and an outer peripheral portion of the transparent plate are liquid-tightly sealed with a sealant layer. Magnifying glass.