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Spectacle lens and method for designing the same

A spectacle lens and design method technology, applied in glasses/goggles, optics, instruments, etc., can solve problems such as limiting the range of clear vision, narrowing the nose field of view, etc., and achieve the effect of improving convenience

Inactive Publication Date: 2011-09-21
HOYA LENS MFG PHILIPPINES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] In Patent Document 3, since it is necessary to narrow the field of view of the far region and the near region on the nose side, the range that can be seen clearly is limited for the wearer.

Method used

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  • Spectacle lens and method for designing the same
  • Spectacle lens and method for designing the same
  • Spectacle lens and method for designing the same

Examples

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Embodiment Construction

[0060] Embodiments of the present invention will be described with reference to the drawings. Here, in the description of the respective embodiments, the same reference numerals are assigned to the same components, and descriptions are omitted or simplified.

[0061] Figure 1 to Figure 5 The first embodiment of the present invention is shown.

[0062] figure 1 It is a schematic plan view of the spectacle lens of the first embodiment.

[0063] exist figure 1 Among them, the spectacle lens 1 is a progressive diopter spectacle lens for both distance and near, and it has: a distance zone 2, which is set on the upper part, and is suitable for observing a distance; a near zone 3, which is set on the lower part, is suitable for observing the near area; the middle area 4, which is set at the middle position, and the refractive power changes continuously from the distance area 2 to the near area 3; In addition, in figure 1 The middle figure shows the spectacle lens 1 for the ...

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PUM

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Abstract

The present invention relates to a spectacle lens and a method for designing the spectacle lens. The invention provides spectacle lenses that allow the wearer to comfortably view a near object in binocular vision by using near regions of the spectacle lenses irrespective of the horizontal position of a target portion of the object. The spectacle lens is set that: compared with the spherical equivalent power at the near dioptric power measuring point on the main visual line in the near dioptric area of the spectacle lens, the spherical equivalent power at a point away from the near dioptric power measuring point NP horizontally toward the nose with reference to the spectacle wearer is set to decrease continuously, whereas the spherical equivalent power at a point away from the near dioptric power measuring point NP horizontally toward the ear is set to increase continuously.

Description

technical field [0001] The present invention relates to spectacle lenses with a near zone and a method of designing the same. Background technique [0002] For example, there are spectacle lenses for single-focus spectacle lenses that are provided with a near area almost on the entire surface for near observation, and progressive-dioptric spectacle lenses that have a near area at the bottom. In the progressive dioptric power spectacle lens called the distance-near dual-use type, a distance zone for observing the distance is provided above the near zone, and a lens with continuously changing refractive power is provided at an intermediate position between the distance zone and the near zone. In the middle area, middle side areas are set on both sides of the middle area. In addition, a main line of gaze (principal meridian) is formed approximately at the center of the distance area, the intermediate area, and the near area. [0003] The main line of gaze refers to the imagin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C7/02
CPCG02C7/061G02C7/065G02C7/027
Inventor 铃木庸平
Owner HOYA LENS MFG PHILIPPINES INC
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