JPH0684428U - Bifocal sunglasses - Google Patents

Abstract

(57) [Abstract] [Purpose] To make reading glasses that have good glare and can be seen easily. [Structure] Compared to the multifocal lens for presbyopia, the light transmittance in the far-field region excluding the near-field region is lowered. [Effect] The hands are bright and look good.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to sunglasses that are convenient for near businesses.

[0002]

[Prior art]

 For example, during daytime fishing, light reflects off the surface of the water and is dazzling. However, when using a normal sangras, presbyopia cannot see easily because they cannot see easily. On the other hand, it is troublesome to change sunglasses and reading glasses one by one with dirty hands during fishing, and the glasses are also dirty. There are eyeglasses with sunglasses lenses flipped up, but the structure is complicated and the price is high.Since the sunglasses lenses have to be moved instead of being replaced, the eyeglasses will not get dirty and it will be troublesome. .

[0003]

[Problems to be solved by the device]

 In the present invention, it is a technical subject to enable presbyopia to perform both near work and glare prevention without the trouble of changing glasses.

[0004]

[Means for Solving the Problems]

 The means adopted in the present invention for solving the above problems will be described below.・ It is a means to make a multifocal lens 1.1 by combining with 12 and use this for spectacles.

[0005]

【Example】

 Hereinafter, the present invention will be described based on embodiments.

A bifocal lens is cut into a predetermined rim ball shape and cut, and a polarizing film having a required shape is attached to obtain a multifocal 1.1 lens. The bifocal lens used at this time is for presbyopia in which the base part is transparent and the small part is magnified and refracted. Also, the polarizing film is cut off at the required portion so that when it is attached, it does not overlap the small portion of the expanding refraction but only the base portion. The part where this polarizing film is attached becomes the far-field area 12 of the multifocal lens, and the part that performs expansion refraction becomes the near-field area 11.11.

Sunglasses are assembled using two of these lenses. This sunglasses reduces the amount of light transmission in the far-field area of the multifocal lens, and in particular, during fishing, it reflects light on the water surface with a polarizing film to prevent glare, and in the near-field area it expands and refracts. To facilitate near work for presbyopes. In other words, this sunglasses can be used both for glare prevention and for near work.

Since the multifocal lens used for this sunglasses has a function of performing magnifying refraction for near vision in the near-field region and reducing the amount of transmitted light in the far-field region, It is also possible to use the one made for the direction of hyperopia or the progressive multifocal one.

[0009]

[Effect of device]

 As described above, the bifocal sunglasses of the present invention are highly practical.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment.

FIG. 2 is a diagram illustrating a lens of an example.

[Explanation of symbols]

 1 Multifocal lens 11 Near field 12 Far field

Claims (2)

[Scope of utility model registration request] 1. A near-field near-field area for performing expansion refraction
A bifocal sunglasses characterized by including a multifocal lens 1.1 that combines a multi-focal lens 1.1 with a degree of expansion refraction and a light transmittance lower than that of the near-field area 11/11. 2. The bifocal sunglasses according to claim 1, wherein a polarizing film is attached to the far-field areas 12, 12 in order to suppress light transmittance.