Rimless spectacles

Abstract

The present invention provides a rimless spectacles capable of easily assuring a wide effective view, durability, attractiveness, and reduced weight and being manufactured easily, wherein a cut-out part is provided at the edge part of a spectacle lens, an installation member is fitted to the cut-out part for installation, the cut-out part has a width generally constant or gradually convergent from the edge to the center of the spectacle lens, a projected line or a groove line generally parallel to the front and rear surfaces of the spectacle lens are formed in the inner peripheral wall part thereof, the installation member has a groove line or a projected line fitted to the projected line or groove line in the cut-out part formed at the portion of the cut-out part coming in contact with the inner peripheral wall part thereof when the installation member is inserted for installation into the cut-out part from the edge side of the spectacle lens, and the installation member is inserted from the edge side of the spectacle lens to the cut-out part for installation.

Description

technical field [0001] The present invention relates to rimless spectacles in which a groove is provided on an edge of a spectacle lens because a frame is not used, and a mounting member is attached to the groove or the like. Background technique [0002] In recent years, rimless glasses have attracted attention because of their advantages such as wide field of view and light weight. Such rimless glasses include: the so-called type that hangs around the lower part of the lens with a nylon thread, the two-point or three-piece type in which a screw hole is formed on the lens and fixed with a screw passing through the hole, and a set of three pieces on the edge surface of the lens. A blind hole is provided on the top, and a pin contact type that the pin-shaped protrusion of the spectacle lens holding member is fixed is inserted into the blind hole. [0003] Although the above-mentioned types of rimless glasses have their own characteristics, for lenses of various thicknesses a...

AI Technical Summary

Problems solved by technology

[0007] But the shortcoming of the rimless glasses described in the patent No. 2997438 communiqué (Japanese Unexamined Publication No. 10-228000) is: the thickness of the lens varies in various ways according to the magnification and profile of the lens required by the wearer, and it is necessary to make the installation The width of the groove (= insertion groove 20) of the part (= end part 2) also changes in accordance with the thickness of the lens, so it is cumbersome

Since the width of the mounting part (=terminal piece 2) must be larger than the width of the groove part, and it must protrude from the surface and the inside, the field of view on this part is narrowed, and it is not ideal in terms of appearance.

[0008] The shortcoming of the rimless glasses recorded on the utility model registration No. 2602605 communiqué (real open No. 7-32620 communique) is: since the mounting part must be made into a shape that can be embedded in the groove portion of the "gradually unfolded shape", it is necessary to use Its bottom is thinner than the front end that gradually expands, but because the bottom must have sufficient strength to support the temples that are combined on the mounting part, it must have a thickness exceeding the specified

Therefore, it is limited in terms of reducing weight and improving aesthetics.

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