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Lens element and contact device for an ophthalmological laser therapy system

A technology for contacting equipment and treatment systems, used in optical components, laser surgery, eye surgery, etc.

Pending Publication Date: 2021-04-13
CARL ZEISS MEDITEC AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To ensure consistent quality, complex optical testing methods are also associated with the manufacture of lens elements made of glass

Method used

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  • Lens element and contact device for an ophthalmological laser therapy system
  • Lens element and contact device for an ophthalmological laser therapy system
  • Lens element and contact device for an ophthalmological laser therapy system

Examples

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Effect test

Embodiment Construction

[0087] figure 1 Shown is a contact device 1 according to the prior art, which has a lens element 2 for direct contact with the corneal surface of the patient's eye A1 and has a frusto-conical design of the holding device 3, the holding device has a wall 4, on the holding device 3 The suction element 5 in the lower region of the , and the vacuum lead-through 6 , to which the outlet line leading to the pump element can be connected. The lens element 2 is produced from mineral glass, here quartz glass. The lens element has an edge 10 , wherein the thickness 7 of the surrounding edge region is greater than zero. The lens element has a flat, instrument-side boundary surface 9 and a curvature of the eye-side boundary surface 8 of the lens element 2 adapted to the curvature of the corneal surface of the patient's eye A1 . The optically active region 11 extends over the entire instrument-side boundary surface of the lens element 2 . Figure 1a An enlarged partial view of the lens e...

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PUM

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Abstract

The invention relates to a lens element (2) and to a one-piece contact device comprising a lens element and a holding device (3) for fixing a the eye (A1) of a patient with respect to a laser applicator of an ophthalmological laser therapy system (100). The invention further relates to a corresponding production method. The aim of the invention is to describe a lens element (2) and a one-piece contact device (1), the method of which for production is conceptually simple and user-friendly, and allows a high degree of automation whilst simultaneously meeting the high demands on the mechanical and also optical precision of the lens element (2). This aim is achieved by a lens element (2) which has an optically effective zone (11) and a junction zone (12), characterised in that the junction zone (12) further comprises a functional zone (14) for joining the lens element (2) into a holder (3) which is arranged continuously or discontinuously around the outer edge (10) of the lens element (2). The aim is also achieved by a contact device (1) comprising a lens element (2) and a holder (3) which are permanently connected to one another, wherein the lens element (2) and the holding device (3) are not connected to one another by means of an adhesion method.

Description

technical field [0001] The invention relates to a lens element for a contact device and a one-piece contact device, wherein the contact device has a lens element and holding means for fixing the patient's eye relative to a laser applicator of an ophthalmic laser therapy system relative geometric position. The invention also relates to a corresponding production method of the lens element and the contact device. Background technique [0002] In order to focus the laser radiation on the patient's eye, in particular the cornea, but also on deeper structures such as the lens, for example the crystalline lens, in the context of eye therapy, it is necessary to have an accurate distance between the focal point of the laser beam and the patient's eye. Create a stable spatial relationship between them. This means that there must be a stable spatial or positional relationship to the exit point of the focused laser radiation from the ophthalmic laser therapy system, ie the laser appl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F9/009
CPCA61F9/009A61F9/008G02C7/047G02C7/049
Inventor 迪克·普罗伊斯贝亚特·伯梅格雷戈尔·施托布拉瓦安德烈亚斯·维特马克·比朔夫
Owner CARL ZEISS MEDITEC AG