System and a method for corrective lens determination

Patent metadata

Field	Value
Publication number	US-10610097-B2
Application number	US-201816232414-A
Country	US
Kind code	B2
Filing date	Dec 26, 2018
Priority date	Jun 30, 2016
Publication date	Apr 7, 2020
Grant date	Apr 7, 2020

Abstract

A component for a mobile computer device, such as a smartphone, can be secured to the housing of the mobile computer device. The component can deflect the light of a built-in light source of the mobile computer device with an optical element and optionally filter the same, or can provide its own light source to improve the option of measuring eccentric photorefraction using the mobile computer device.

First claim

The invention claimed is:

1. A system for corrective lens determination by eccentric photorefraction, the system comprising:
a mobile computer apparatus including:
a housing;
a camera installed in the housing;
a processor; and
an associated non-transitory storage memory storing a computer program having a program code which, when executed on the processor, carries out corrective lens determination of an eye of a person to be examined by eccentric photorefraction; and

an enclosure element configured to completely or partially enclose the mobile computer apparatus and having at least one light source,
wherein the at least one light source is arranged on an outer side of the enclosure element facing away from the camera, and
wherein the at least one light source is configured to illuminate an eye with an eccentricity during an eccentric photorefraction measurement.

2. The system as claimed in claim 1 , wherein the at least one light source comprises a multiplicity of light sources arranged in a wedge shape.

3. The system as claimed in claim 1 , wherein the at least one light source comprises a plurality of light sources arranged at different respective distances from the camera, and wherein the system is configured to set different measurement ranges for the eccentric photorefraction by activating different light sources.

4. The system as claimed in claim 1 , wherein the enclosure element comprises an opening for the camera of the mobile computer apparatus, and wherein the at least one light source is arranged adjacent to the opening.

5. The system as claimed in claim 4 , wherein the at least one light source comprises a plurality of light sources arranged at different respective distances from the opening.

6. The system as claimed in claim 1 , wherein the mobile computer apparatus is configured to control the at least one light source for carrying out the eccentric photorefraction.

7. A method for corrective lens determination, comprising:
illuminating a person's eye with light;
recording an image of the person's eye with a camera of a mobile computer apparatus; and
carrying out an eccentric photorefraction determination based on the recorded image of the person's eye;
wherein the light from at least one light source of an enclosure element, which is configured to completely or partially enclose the mobile computer apparatus, is emitted with an eccentricity for the eccentric photorefraction, and
wherein the at least one light source is arranged on an outer side of the enclosure element facing away from the camera.

8. The method as claimed in claim 7 , wherein the light is emitted by a multiplicity of light sources of the enclosure element which are arranged in a wedge-shaped manner.

Assignees

• Zeiss Carl Vision Int Gmbh
• Zeiss Carl Ag

Inventors

• Breuninger Tobias
• Schäffel Frank
• Wahl Siegfried
• Lindig Karsten
• Ohlendorf Arne
• Cabeza-Guillén Jesús-Miguel

Classifications

• A61B3/0008

  provided with illuminating means (A61B3/117, A61B3/14 take precedence) · CPC title

• A61B3/14 Primary

  Arrangements specially adapted for eye photography · CPC title

• G02B19/0019

  having reflective surfaces only (e.g. louvre systems, systems with multiple planar reflectors) · CPC title

• A61B3/10

  Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions · CPC title

• G02B13/001

  Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras (G02B23/243 takes precedence) · CPC title