Reflection type artificial crystal optical aberration hartmann measuring apparatus

Abstract

A reflection type artificial crystal aberration Hartmann instrument mainly comprises a light source, a beam matching system, a standard spherical reflector, a aperture segmentation element, a photoelectric detector and a computer, wherein, a Hartmann wave-front sensor is composed of the aperture segmentation element and the photoelectric detector. Lights emitted by the light source are collimatedto be emitted in parallel. The parallel lights pass through an artificial crystal to be measured by a reflector and a spectroscope in sequence. Transmission light waves arrive at the standard spherical reflector which is axially adjusted to lead to the coincidence of the back focus of the artificial crystal to be measured and the spherical center of the standard spherical reflector. Reflected light waves return along an original optical path, pass through the artificial crystal to be measured again, then pass through the spectroscope and the beam matching system in sequence and are segmented and sampled by the aperture segmentation element, and then are focused on the photoelectric detector to form light spot arrays. The acquired light sport data is sent to the computer to be processed, soas to obtain the aberration of the artificial crystal to be measured. The reflection type artificial crystal aberration Hartmann instrument has the advantage of simple and stable structure, which isa convenient, fast and reliable detection tool for the ophthalmology clinical artificial crystal transplantation and processing and the detection of artificial crystals for personalized human eye aberrations correcting.

Description

technical field [0001] The invention relates to a reflective Hartmann measuring instrument for intraocular lens aberration, which is a special equipment for clinical ophthalmology implantation of intraocular lens, and is also a high-precision equipment for producing intraocular lens. Background technique [0002] At present, intraocular lenses have been widely used in the optical correction of high refractive errors and cataract surgery, but most of them can only correct low-order aberrations of the human eye such as defocus and astigmatism. Research shows that the human eye optical system not only has low-order aberrations, but also high-order aberrations such as coma, spherical aberration, etc. Correcting the low-order and high-order aberrations of the human eye at the same time can achieve better visual quality improvement (“VisualPerformance after correcting the monochromatic and chromatic aberrations of the eye”, Geun-YoungYoon and David R.Williams, J.Opt.Soc.Am.A / Vol.1...

AI Technical Summary

Problems solved by technology

However, the application of the Hartmann wavefront sensor to the measurement of intraocular lens aberrations is still blank, and the present invention proposes just for this situation

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