JP3162906U - Foldable Fresnel lens - Google Patents

Abstract

A foldable pocket-size Fresnel lens that is convenient to carry. A frame 2 is provided and connected to two Fresnel lenses 1 and a hinge portion 5 is provided on the frame 2 to provide a folding Fresnel lens that is convenient for carrying. When reading a book or newspaper using this foldable Fresnel lens, if the size of the Fresnel lens is, for example, A6 size (in an open state), read the text without moving the lens up and down and left and right. Because it can do, because it does not flicker, it is very easy to read and eyes are not tired. [Selection] Figure 1

Description

  The present invention relates to a foldable pocket-size Fresnel lens that is convenient to carry.

  Conventionally, Fresnel lenses have been used for comparatively large items such as a reading magnifier, a copying machine, and a concentrating solar power generation, and a small one having a business card size loupe.

  In Japanese Utility Model Publication 62-14420, it is for reading, but it cannot be carried in a pocket.

  As a portable Fresnel lens, a size that usually fits in a breast pocket or the like is desirable, and when it is used for reading or the like, a size of about A5 size is desirable.

Japanese Utility Model Publication Sho 62-14018 (2 pages, Fig. 2)

In the case of elderly people and people with low vision, especially elderly people, vision declines with age, making it difficult to read books and newspapers.
Therefore, the above-mentioned loupe is used. However, since a small-sized one is read while moving the loupe, the characters are scattered and the eyes become tired.
In addition, there is a problem that a large sheet is inconvenient to carry.

To solve the above problem, cut a sheet-like Fresnel lens, attach a frame with a foldable hinge to it, and make it easier to read when reading books and newspapers. Make it convenient for carrying and storing.
That is, the frame serves as a protection of the Fresnel lens and a hinge body that can be bent.
Note that the number of folds can be doubled like a folding screen.

When reading a book or newspaper using the folding flunel lens of the present invention, if the size of the Fresnel lens is, for example, A6 size (in the open state), the lens does not move much up and down and left and right. Because the characters can be read, the characters do not flicker, so it is very easy to read and eyes are not tired.
When storing it, it is convenient because it can be folded in half and slightly larger than a business card, and can be carried in a breast pocket.

  1 is a plan view showing a state in which a frame 2 is provided on two Fresnel lenses 1 in the present invention. FIG.   It is a side view which shows the state which folded the Fresnel lens 1 and the frame 2 of FIG.

  An embodiment of the present invention will be described with reference to FIGS.

  1, after first cutting a sheet-like Fresnel lens 1 into two pieces, a frame 2 is provided by abutting the cut portions 3. The material of the frame 2 is a flexible material such as rubber or vinyl, and polypropylene. The hinge part 5 is provided by cutting the cut part 4 into the frame 2 itself. Note that the number of cuts is not limited to two and may be plural.

  In FIG. 2, the cut Fresnel lens 1 and the frame 2 can be folded by folding the hinge part 4 in half. In addition, it cannot be bent in the opposite direction.

  The foldable Fresnel lens of the present invention can be industrially produced for portable use that can be put in a breast pocket or the like by elderly people or people with low vision.

1 Fresnel lens 5 Hinge part 2 Frame 3 Cutting part 4 Cutting part

Claims (1)

  Cutting the sheet-like Fresnel lens into multiple pieces and providing a frame for joining the cut Fresnel lenses. At the joining part, the frame is provided with a hinge part so that it can be bent, and the frame itself is a hinge body. Folding Fresnel lens characterized by

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