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Phase modulation device for an ophthalmic instrument, ophthalmic instruments equipped with such device, and related calibration method

一种相位调制设备、相位调制的技术，应用在测试眼睛的设备、应用、医药科学等方向

Inactive Publication Date: 2010-05-26
IMAGINE EYES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In fact, this measurement has to be carried out with strict rules and in the state of the art requires the use of a prosthetic eye

Method used

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  • Phase modulation device for an ophthalmic instrument, ophthalmic instruments equipped with such device, and related calibration method
  • Phase modulation device for an ophthalmic instrument, ophthalmic instruments equipped with such device, and related calibration method
  • Phase modulation device for an ophthalmic instrument, ophthalmic instruments equipped with such device, and related calibration method

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no. 2 example

[0089] In accordance with the present invention and in figure 1 A second embodiment of the method according to the invention implemented in the simulator shown in includes the following steps:

[0090] - control the modulating device according to the modulating command,

[0091] - positioning of the eye being examined at the output of the simulator according to the invention,

[0092] - send out the measuring beam FC,

[0093] - emits the main beam FA,

[0094] - modulation of the wavefront phase of the secondary beam by means of modulation means MD according to modulation instructions,

[0095] - modulation of the wavefront phase of the main beam FA interacting with the eye EYE according to the modulation instructions, the modulation of the main beam and the measuring beam is simultaneous,

[0096] - measure the phase modulation applied to the secondary beam by the modulating means, and

[0097] - maintain the control applied to the modulation means if the phase modulati...

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Abstract

The invention relates to a phase modulation device implemented in an ophthalmic instrument that uses a main light beam (FA) interacting with an eye (EYE), said device comprising: means (MD) for modulating the phase of the wave front of said main light beam (FA); means for controlling the phase modulation means according to a modulation set-point; and means for analysing the modulation thus carried out of the wave front of the main light beam (FA). The device further includes means for emitting a secondary light network (FC), means for directing the secondary light network (FC) along an optical path to the modulation means and then to the wave front analysis means, said optical path extending through the eye.; The control means and the front wave analysis means receiving the modulated secondary light beam (FC) interact during a so-called training period in order to provide response data of the phase modulation means to a set of pre-determined modulation set-points.

Description

technical field [0001] The present invention relates to a phase modulation device for ophthalmic instruments using light beams interacting with the eye. The invention also relates to an ophthalmic instrument implementing such a device and a calibration method for these ophthalmic instruments. [0002] The field of the invention relates more particularly to vision correction simulators and ophthalmic imaging devices, especially high resolution retinal imaging devices. Background technique [0003] Ophthalmic instruments, such as those used for retinal imaging or for optical laser therapy on the retina, operate with a main beam passing through the various optical elements of the patient's eye (cornea, lens, etc.), or with a beam incident on the eye (retinal in the case of phototherapy) or as a beam of light emanating from the eye (in the case of retinal imaging). [0004] In all cases, aberrations of the different optical elements of the eye cause wavefront aberrations of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B3/103
CPCA61B3/1015
Inventor 泽维尔·莱维克
Owner IMAGINE EYES
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