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Method and device for measuring an optical lens for individual wearing situations by an user

An optical lens and lens technology, which is applied in the field of equipment for measuring optical lenses arranged in a measuring volume, computer programs, and spatial refractive index distribution, can solve problems such as deviation of effects, and achieve accurate results.

Active Publication Date: 2020-11-20
CARL ZEISS VISION INT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The downside is that ISO VP can deviate from how a pair of glasses will look when worn (also known as wearing vertex power or wearing value)

Method used

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  • Method and device for measuring an optical lens for individual wearing situations by an user
  • Method and device for measuring an optical lens for individual wearing situations by an user
  • Method and device for measuring an optical lens for individual wearing situations by an user

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0065] figure 1 The device 10 shown in is used to determine the optical effect of an optical lens 100 , in particular a spectacle lens. The device 10 comprises a display device 20 configured to display a test structure 21 . By way of example, this display device can be a screen or a display and can display different test structures.

[0066]The apparatus 10 further comprises an image capture device 30 configured to capture image data of the test structure 21 from a plurality of viewpoints 31 , 31 ′, 31 ″ through an imaging beam path 32 through the lens 100. In one aspect The imaging beam paths from a plurality of different viewpoints may be successively recorded by one camera, which is successively arranged at a plurality of different positions. However, multiple cameras are preferably provided in order to capture image data in parallel. It should be understood , can also provide a mixed form.By way of example, the image capture device 30 can include a first camera 33 and a ...

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Abstract

The present invention relates to the field of ophthalmic optics, in particular a device (10) for measuring the optical effect of an ophthalmic lens (100), in particular a spectacle lens, arranged in ameasurement volume (200), the device comprising a display system (20) configured for displaying a test structure (21); an image acquisition system (30) configured for acquiring image data of the teststructure from multiple viewpoints (31, 31', 31"), using imaging optical paths (32) which pass through the lens (100); and a computer unit (40), wherein the computer unit is configured for: determining a three-dimensional shape of the lens (100) on the basis of the image data; and calculating an optical effect of the lens (100) on the basis of its three-dimensional shape, wherein the lens (100) is a spectacle lens and the optical effect of the spectacle lens is calculated for a predetermined wearing position by an user. The present invention further relates to a corresponding method and to acomputer program.

Description

technical field [0001] The invention relates to the field of ophthalmic optics, in particular to a device for measuring the optical action of an optical lens, in particular a spectacle lens, arranged in a measurement volume. The invention further relates to a device for measuring the spatial refractive index distribution of an optical lens, in particular a spectacle lens, arranged in a measurement volume. The invention further relates to a method for calibrating a corresponding device, a computer-implemented method for measuring the optical action of an optical lens arranged in a measurement volume, and a corresponding computer program. Background technique [0002] A measurement of general interest in the case of spectacle lenses is vertex power (VP). In some viewing situations, the vertex power is a valid variable for the lens. Therefore, VP differs depending on the distance from the observer or the inclination of the lens. Measuring instruments that determine VP by dir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/245G01M11/02
CPCG01B11/245G01M11/02G01M11/0264A61B3/0025A61B3/1005A61B3/107A61B3/04G01M11/0214G02C7/024A61B3/103A61B3/1035
Inventor C·格拉塞纳普
Owner CARL ZEISS VISION INT GMBH
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