DE102010046252A1 - Eye illuminating mechanism, has optical system provided between source and focusing system, where force of optical system and distances are selected such that angle size of source does not transfer power of observer with normal sight - Google Patents

Eye illuminating mechanism, has optical system provided between source and focusing system, where force of optical system and distances are selected such that angle size of source does not transfer power of observer with normal sight Download PDF

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DE102010046252A1
DE102010046252A1 DE102010046252A DE102010046252A DE102010046252A1 DE 102010046252 A1 DE102010046252 A1 DE 102010046252A1 DE 102010046252 A DE102010046252 A DE 102010046252A DE 102010046252 A DE102010046252 A DE 102010046252A DE 102010046252 A1 DE102010046252 A1 DE 102010046252A1
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optical system
light source
source
focusing
optical
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DE102010046252B4 (en
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Anmelder Gleich
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/0008—Apparatus for testing the eyes; Instruments for examining the eyes provided with illuminating means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/117—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for examining the anterior chamber or the anterior chamber angle, e.g. gonioscopes
    • A61B3/1173—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for examining the anterior chamber or the anterior chamber angle, e.g. gonioscopes for examining the eye lens
    • A61B3/1176—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for examining the anterior chamber or the anterior chamber angle, e.g. gonioscopes for examining the eye lens for determining lens opacity, e.g. cataract

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  • Health & Medical Sciences (AREA)
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  • Biophysics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
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  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Eye Examination Apparatus (AREA)

Abstract

The mechanism has a dispersive optical system (2) provided between a light source (1) and a focusing optical system (3). An optical force of the dispersive optical system and distances (L1, L2) along an optical axis between the light source and the dispersive system and between the dispersive and focusing systems are selected such that maximum angle size of the light source does not transfer resolving power of an observer with normal sight, while observing from a point (A) with a single point of contact of the focusing system.

Description

Die Erfindung gehört zur selbständigen vorärztlichen Kontrolle des Zustandes der Augen.The invention belongs to the independent pre-medical control of the condition of the eyes.

Es ist die Einrichtung für Beleuchtung des Auges, einschließend eine in einem undurchsichtigen Gehäuse befindende Lichtquelle und ein optisches System, welches das Licht der Lichtquelle in das zu beleuchtende Auge richtet, dadurch gekennzeichnet, dass das optische System in seinem Brennpunkt, der sich außerhalb des Gehäuses befindet, eine reelle Darstellung der Lichtquelle bildet, bekannt (siehe DE 10 2006 039 753 ).It is the device for illumination of the eye, including a light source located in an opaque housing and an optical system which directs the light of the light source into the eye to be illuminated, characterized in that the optical system at its focal point located outside the housing is, a real representation of the light source forms, known (see DE 10 2006 039 753 ).

Mit Hilfe der bekannten Einrichtung wird im Auge eine Punktlichtquelle geschaffen, mit deren Hilfe auf der Retina schattigen Darstellungen der Elemente der Ungleichartigkeit seiner optischen Medien formiert werden. Dafür muss man im Auge mit Hilfe des fokussierenden optischen Systems eine reelle Darstellung der Lichtquelle formieren, die eine möglichst kleine Winkelgröße hat. In der bekannten Einrichtung ist eine solche Quelle mittels eines Diaphragmas mit einer kleinen Öffnung gebildet. Der Durchmesser der Öffnung des Diaphragmas ist in der bekannten Einrichtung mit der Entfernung des Diaphragmas vom Eingangsfenster des fokussierenden Systems verbunden. Bei der Ratio des Durchmessers der Öffnung des Diaphragmas zu dieser Entfernung von etwa 10–3 und weniger (zum Beispiel, bei dem Durchmesser der Öffnung ca. 0,1 Mm und die Entfernung von 10 – bis 20 cm) formiert sich auf Retina des Auges ein genügend deutliches Bild der Darstellungen der undurchsichtigen Partikeln und anderer Elemente der Ungleichartigkeit in den durchsichtigen optischen Medien des Auges. Doch haben diese Darstellungen nicht scharfe Konturen und sind mit hellen Aureolen umgeben. Das Bild, das ein Auge mit Hilfe einer solchen Einrichtung beobachtet, wird insgesamt von niedrigem Auflösungsvermögen charakterisiert, das viele Details der Darstellungen nicht erkennen lässt.With the aid of the known device, a point light source is created in the eye, with the help of which shaded representations of the elements of the non-uniformity of its optical media are formed on the retina. For this purpose, one has to form in the eye with the help of the focusing optical system a real representation of the light source, which has the smallest possible angular size. In the known device such a source is formed by means of a diaphragm with a small opening. The diameter of the opening of the diaphragm is connected in the known device with the removal of the diaphragm from the input window of the focusing system. At the ratio of the diameter of the opening of the diaphragm to this distance of about 10 -3 and less (for example, at the diameter of the opening about 0.1 mm and the distance of 10 - 20 cm) is formed on the retina of the eye a sufficiently clear picture of the representations of the opaque particles and other elements of dissimilarity in the transparent optical media of the eye. But these representations do not have sharp contours and are surrounded by bright aureoles. The image that an eye observes with the aid of such a device is generally characterized by low resolving power, which does not reveal many details of the representations.

Eine weitere Verkleinerung des Durchmessers der Öffnung des Diaphragmas ermöglicht im wesentlichen nicht, das Auflösungsvermögen zu verbessern. Bei einer Verkleinerung des Durchmessers der Öffnung verbessert sich die Qualität der Darstellung nur unbedeutend in Zusammenhang mit den Erscheinungen der Diffraktion des Lichtes und der Interferenz. Die Konturen der Darstellungen bleiben nicht scharf, die hellen Aureolen bleiben. Die Umfänge der „Punktlichtquelle” verringern sich bei einer weiteren Verkleinerung der Öffnung des Diaphragmas nicht, nur die Beleuchtungsstärke des Auges wird verringert.Further reduction of the diameter of the opening of the diaphragm substantially does not allow to improve the resolution. With a reduction in the diameter of the aperture, the quality of the display is only insignificantly improved in connection with the phenomena of diffraction of the light and the interference. The contours of the representations do not remain sharp, the bright aureoles remain. The perimeter of the "point light source" does not decrease with further reduction of the opening of the diaphragm, only the illuminance of the eye is reduced.

Die Aufgabe der vorliegenden Erfindung ist die Formierung einer reellen Darstellung der Punktlichtquelle in den optischen Medien des Auges ohne Anwendung eines Diaphragmas mit einer kleinen Öffnung, womit die Mängel, die von der Nutzung der derartigen Diaphragmen herbeigerufen sind, beseitigt werden. Diese Aufgabe wird mittels Merkmale des Anspruches gelöst.The object of the present invention is the formation of a real representation of the point light source in the optical media of the eye without the use of a diaphragm with a small opening, thus eliminating the shortcomings caused by the use of such diaphragms. This object is achieved by means of features of the claim.

Auf der Zeichnung ist das Schema der vorgeschlagenen Einrichtung abgebildet.The drawing shows the scheme of the proposed device.

Die vorgeschlagene Einrichtung schließt eine Lichtquelle 1, ein zerstreuendes optisches System 2 und ein fokussierendes optisches System 3 ein, die in einem undurchsichtigen Gehäuse angeordnet sind. Die Entfernung zwischen der Quelle 1 und dem Eingang des optischen zerstreuenden Systems 2 (L1), die Entfernung zwischen dem Ausgang des optischen zerstreuenden Systems 2 und dem Eingang des fokussierenden Systems 3 (L2), und auch die optische Kraft des Systems 2 sind so ausgewählt, dass die Winkelgröße der Lichtquelle 1, beim Betrachteten aus einem Punkt beim Eingangsfenster des fokussierenden Systems 3 (Punkt A), eine Winkelsekunde, das heißt die Größe, die schon nicht von der normalen menschlichen Sehkraft ausgelöst werden kann, nicht übertritt. Als Diaphragma dient dabei das Appreturdiaphragma des zerstreuenden Systems 2.The proposed device includes a light source 1 , a dissipative optical system 2 and a focusing optical system 3 a, which are arranged in an opaque housing. The distance between the source 1 and the input of the optical dissipating system 2 (L1), the distance between the output of the optical dissipating system 2 and the input of the focusing system 3 (L2), and also the optical power of the system 2 are selected so that the angular size of the light source 1 when viewed from a point at the input window of the focusing system 3 (Point A), an angular second, that is, the size that can not be triggered by normal human vision, does not exceed. The diaphragm serves as the diaphragm of the dissipating system 2 ,

Der Autor verwendete die Einrichtung mit den folgenden Parametern erfolgreich: Die optische Kraft des zerstreuenden Systems aus zwei Linsen bildete das Minus 48 Dioptrien bei der Größe des Durchmessers des Appreturdiaphragmas ca. 10 mm zusammen. Die Entfernung L1 zwischen der Lichtquelle und des zerstreuenden Systems beträgt 30 bis 50 mm, die Entfernung L2 zwischen dem zerstreuenden und dem fokussierenden Systemen beträgt 150 bis 200 mm. Als Lichtquelle diente eine Glühbirne mit dem maximalen Umfang des leuchtenden Körpers ca. 3 mm oder eine Lichtdiode mit dem Durchmesser von 5 mm.The author successfully used the device with the following parameters: The optical power of the dispersing system of two lenses made the minus 48 Diopters in the size of the diameter of the Appreturdiaphragmas about 10 mm together. The distance L1 between the light source and the diffusing system is 30 to 50 mm, the distance L2 between the dispersing and focusing systems is 150 to 200 mm. The light source was a light bulb with the maximum circumference of the luminous body about 3 mm or a light diode with the diameter of 5 mm.

Die Konturen der Darstellungen waren scharf, helle Aureolen wurden nicht beobachtet.The contours of the images were sharp, bright aureoles were not observed.

ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • DE 102006039753 [0002] DE 102006039753 [0002]

Claims (1)

Einrichtung für Beleuchtung des Auges, einschließend eine in einem undurchsichtigen Gehäuse befindende Lichtquelle und ein optisches System, welches das Licht der Lichtquelle in das zu beleuchtende Auge richtet, wobei das optische System in seinem Brennpunkt, der sich außerhalb des Gehäuses befindet, eine reelle Darstellung der Lichtquelle bildet, dadurch gekennzeichnet, dass zwischen der Lichtquelle und dem fokussierenden System sich ein zerstreuendes optisches System befindet, wobei die optische Kraft des zerstreuenden optischen Systems, und auch die Entfernungen entlang der optischen Achse zwischen der Lichtquelle und des zerstreuenden optischen Systems und zwischen dem optischen zerstreuenden und dem fokussierenden Systemen so ausgewählt sind, dass die maximale Winkelgröße der Darstellung der Lichtquelle, die durch das zerstreuende System aus dem Punkt betrachtet wird, der sich bei dem Eingangsfenster des fokussierenden Systems befindet, das Auflösungsvermögen eines Beobachters mit normaler Sehkraft nicht übertritt.A device for illuminating the eye, including a light source located in an opaque housing and an optical system which directs the light from the light source into the eye to be illuminated, the optical system at its focal point, which is located outside the housing, a real representation of Light source is formed, characterized in that between the light source and the focusing system is a scattering optical system, wherein the optical power of the dispersive optical system, and also the distances along the optical axis between the light source and the dispersive optical system and between the optical scattering and focusing systems are selected so that the maximum angular size of the representation of the light source viewed through the dispersive system from the point located at the input window of the focusing system, the resolution of a Beob aft with normal vision does not exceed.
DE102010046252.7A 2009-10-31 2010-09-22 Device for the illumination of the eye Expired - Fee Related DE102010046252B4 (en)

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DE200920014746 DE202009014746U1 (en) 2009-10-31 2009-10-31 Device for the illumination of the eye
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DE202013002266U1 (en) 2013-03-08 2013-05-06 Eduard Galinker Device for illuminating the eye with the aim of a visual assessment of the state of the optical media of the viewer's own eye
DE102013005782B4 (en) 2013-04-04 2018-09-06 Eduard Galinker Device for illuminating the eye with the aim of a visual assessment of the state of the optical media of the observer's own eye
IT201700074170A1 (en) * 2017-07-03 2019-01-03 Burlamacchi Leo Equipment and method for examining the state of a human eye

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DE102006039753A1 (en) 2006-08-24 2008-02-28 Eduard Galinker Method for visual evaluation of condition of optical media of own eye of observer, involves projecting real representation of source of light spot in eye such that focus of projection is within eyeball in its optical media

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DE3307168C2 (en) 1983-03-01 1985-10-03 Wolfdietrich Dr. Innsbruck Steinhuber Device for retinoscopy
DE102006019138B4 (en) 2006-04-21 2021-06-10 Fritsch Gmbh Particle analyzer with magnification range

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Publication number Priority date Publication date Assignee Title
DE102006039753A1 (en) 2006-08-24 2008-02-28 Eduard Galinker Method for visual evaluation of condition of optical media of own eye of observer, involves projecting real representation of source of light spot in eye such that focus of projection is within eyeball in its optical media

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