Wide field spherical lenses and protective eyewear

A technology for lenses and glasses, which is applied in the direction of lens components, glasses/goggles, instruments, etc., to achieve the effect of reducing the magnification effect

Inactive Publication Date: 2004-01-28
卡尔蔡司光学股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to manufacturing difficulties, early lenses of this type were only possible with small openings, so their rejection may have been due to aesthetic reasons and a limited field of view

Method used

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  • Wide field spherical lenses and protective eyewear
  • Wide field spherical lenses and protective eyewear
  • Wide field spherical lenses and protective eyewear

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0152] concentric form

example 2

[0154] Figure 19 A series of steeply curved spherical lenses of -6D, -3D, and +3D diopters are shown [respectively Figure 19 (a), (c) and (e)] with the corresponding low curvature Sola Perma-Poly TM Ordinary lenses [respectively Figure 19 Computational comparison between (b), (d) and (f)].

[0155] The steeply curved spherical lens assembly has essentially the same 16D spherical front surface as shown in lens section 400 . In general, steeply curved spherical lens assemblies provide excellent edge distortion. Figure 19 The lenses in (a) and 19(c) also exhibit reduced root mean square error under negative demands.

example 3

[0157] Figure 20 A computational comparison between two steeply curved lens assemblies with a 16D front surface -3D transmitted diopter and a -2D back surface cyl correction is shown.

[0158] Figure 20 The lens in (a) has a conventional donut torus back; Figure 20 The lens in (b) has an all circular meridia back of the type described above. The latter shows excellent rms dioptric error and somewhat improved distortion.

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Abstract

The present invention relates to novel ophthalmic lens elements (402, 404) and eyewear (400) having wide field of view, low distortion, improved astigmatism correction where required and enhanced eye protection properties. Series of lens elements have steeply curved spherical reference surfaces. The edged lenses of the series have approximately consistent aperture size, shape and hollow depth across a range of common prescriptions. Novel sunglasses, laser protection eyewear, and lens edgings, coatings, and frames are included in the invention.

Description

technical field [0001] The present invention relates to improved ophthalmic lens assemblies and spectacles, including prescription lenses, spectacles, sunglasses, laser protection spectacles, and therefore frames, coatings and trimmings. Background technique [0002] Most traditions require lenses to have a relatively flat base curve. These lenses offer limited viewing angles due to edge distortion and / or physical size constraints. Their relatively flat shape limits the amount of eye protection the lenses can provide, especially near the temple. [0003] Ring-shaped glasses were developed to provide wider viewing angles and more eye protection. The ring design also allows different and even distinct styles to be achieved. However, ring glasses are typically non-prescription. A typical flat baseline for these products is between 6 and 10D. Its annular shape (sometimes a rake shape) is achieved by rotating and / or translating the optical axis of the lens in the direction o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/11G02C7/02G02C7/10
CPCG02C7/02G02C7/10
Inventor 迈克尔·A·莫里斯科林·M·派罗特西蒙·J·爱德华雷·S·斯普雷特戴维·L·达布兰登·叶布赖恩·亚当斯帕雷埃克·贝格利理查德·布莱克
Owner 卡尔蔡司光学股份有限公司
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