DE3822274A1 - Objective having telecentric beam path - Google Patents

Objective having telecentric beam path

Info

Publication number
DE3822274A1
DE3822274A1 DE19883822274 DE3822274A DE3822274A1 DE 3822274 A1 DE3822274 A1 DE 3822274A1 DE 19883822274 DE19883822274 DE 19883822274 DE 3822274 A DE3822274 A DE 3822274A DE 3822274 A1 DE3822274 A1 DE 3822274A1
Authority
DE
Germany
Prior art keywords
lens
objective
optical elements
beam path
telecentric beam
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19883822274
Other languages
German (de)
Inventor
Uwe Laux
Johannes Dipl Phys Schlichting
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jenoptik AG
Original Assignee
Jenoptik Jena GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jenoptik Jena GmbH filed Critical Jenoptik Jena GmbH
Publication of DE3822274A1 publication Critical patent/DE3822274A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/22—Telecentric objectives or lens systems

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

The invention relates to an objective having telecentric beam path, comprising 12 optical elements which are combined in eight groups and constructed from known, conventional types of glass. The objective has a short constructional length, images an object field of 30 mm which is telecentrically illuminated with an aperture of 0.18 onto a field of 2G = 46@ and is corrected for the visual spectral range. Thus, a lens of this type is particularly suitable for planetariums. <IMAGE>

Description

Das erfindungsgemäße Objektiv ist für alle Zwecke verwendbar, bei denen Objektive mit objektseitiger telezentrischer Beleuchtung oder Objektive mit bildseitiger Telezentrie erforderlich sind, vorzugsweise für Planetarien.The lens according to the invention can be used for all purposes, where lenses with object-side telecentric lighting or lenses with image-side telecentricity required are, preferably for planetariums.

Es gibt keine abbildenden Systeme vergleichbarer Eigenschaften. Okulare mit Telezentrie sind nicht vergleichbar.There are no imaging systems of comparable properties. Eyepieces with telecentricity are not comparable.

Ziel der Erfindung ist die Realisierung eines Objektes mit telezentrischem Strahlengang, das mit relativ geringem Aufwand gefertigt werden kann und das den Ansprüchen, die Planetarien stellen, genügt. The aim of the invention is the realization of an object with telecentric Beam path that is manufactured with relatively little effort and that can meet the demands of planetariums, enough.  

Aufgabe der Erfindung ist es, ein Objektiv kurzer Baulänge zu schaffen, das ein Objektfeld von 30 mm Durchmesser, welches telezentrisch mit einer Apertur von 0,18 beleuchtet wird, auf ein Feld von 46° abzubilden und welches für den visuellen Spektralbereich korrigiert ist. Diese Aufgabe wird bei einem Objektiv mit telezentrischem Strahlengang, bestehend aus elf optischen Elementen erfindungsgemäß dadurch gelöst, daß das Objektiv folgende Konstruktionsdaten aufweist, wobei FL die Flächennummer, sr den Scheitelradius, r die Krümmung, d/l die Flächenabstände, ld der halbe Linsendurchmesser, m der Medienname und n die Brechzahlen für Wellenlänge 546.07 µm sind und wobei die Flächen 1-2 einen Objektträger und Fläche 21 die Bildebene kennzeichnen und die Flächen 3 bis 20 die optischen Elemente, die in 7 Gruppen (I-VII) zusammengefaßt sind:The object of the invention is to provide a lens of short overall length which maps an object field of 30 mm in diameter, which is illuminated telecentrically with an aperture of 0.18, to a field of 46 ° and which is corrected for the visual spectral range. This object is achieved according to the invention in a lens with a telecentric beam path, consisting of eleven optical elements, in that the lens has the following design data, FL being the area number, sr the vertex radius, r the curvature, d / l the area spacing, ld half the lens diameter, m is the media name and n are the refractive indices for wavelength 546.07 µm and the areas 1-2 identify a slide and area 21 the image plane and areas 3 to 20 the optical elements, which are combined in 7 groups (I-VII):

Vorteilhaft kann es sein, wenn erfindungsgemäß zwischen den optischen Elementen mit den Flächen 15 und 16 eine Blende angeordnet ist zur Ausschaltung von Streulicht. It can be advantageous if, according to the invention, between the optical elements with the surfaces 15 and 16 arranged an aperture is for switching off stray light.  

Die Erfindung wird anhand des Linsenschnittbildes Fig. 1 näher erläutert.The invention is explained in more detail with reference to the lens sectional view in FIG. 1.

In Fig. 1 sind entlang der optischen Achse O-O′ zwölf optische Elemente angeordnet, die durch ihre Radien r₁-r₂₀ und ihre Dicken d₁ bis d₁₂′ sowie ihre halben Linsendurchmesser ld, Brechzahlen n und Materialien M gekennzeichnet sind, die auf die Wellenlänge 546,07 µm bezogen sind.In Fig. 1 along the optical axis OO 'twelve optical elements are arranged, which are characterized by their radii r ₁- r ₂₀ and their thicknesses d ₁ to d ₁₂' as well as their half lens diameter ld, refractive indices n and materials M. the wavelength is 546.07 µm.

Durch Luftabstände l₁ bis l₈ sind die Elemente teilweise getrennt.The elements are partially separated by air gaps l ₁ to l ₈.

Die nachfolgende Tabelle enthält die konkreten Konstruktionsdaten des dargestellten erfindungsgemäßen Objektivs. Unter Beibehaltung des erfindungsgemäßen Konstruktionsprinzips sind Anpassungen an geänderte Bildfelder und Projektionsentfernungen denkbar, die hiermit gleichfalls unter Schutz gestellt sind.The following table contains the concrete design data of the illustrated lens according to the invention. While maintaining of the design principle according to the invention Adjustments to changed image fields and projection distances conceivable, which are hereby also placed under protection.

Claims (2)

1. Objektiv mit telezentrischem Strahlengang, bestehend aus elf optischen Elementen, gekennzeichnet durch folgende Konstruktionsdaten, wobei FL die Flächennummer, sr den Scheitelradius, r die Krümmung, d/l die Flächenabstände, ld der halbe Linsendurchmesser, M der Medienname und n die Brechzahlen für Wellenlänge 546.07 µm sind und wobei die Flächen 1-2 einen Objektträger und Fläche 21 die Bildebene kennzeichnen und die Flächen 3 bis 20 die optischen Elemente, die in 7 Gruppen (I-VII) zusammengefaßt sind: 1. Lens with telecentric beam path, consisting of eleven optical elements, characterized by the following design data, where FL is the area number, sr the apex radius, r the curvature, d / l the area distances, ld the half lens diameter, M the media name and n the refractive index for Wavelength is 546.07 µm and the areas 1-2 identify a slide and area 21 the image plane and areas 3 to 20 the optical elements, which are combined in 7 groups (I-VII): 2. Objektiv nach Anspruch 1, dadurch gekennzeichnet, daß zwischen den optischen Elementen mit den Flächen 15 und 16 eine Blende angeordnet ist.2. Lens according to claim 1, characterized in that between an aperture with the optical elements with the surfaces 15 and 16 is arranged.
DE19883822274 1987-09-02 1988-07-01 Objective having telecentric beam path Withdrawn DE3822274A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD30657687A DD263605A1 (en) 1987-09-02 1987-09-02 LENS WITH TELECENTRIC RADIATION

Publications (1)

Publication Number Publication Date
DE3822274A1 true DE3822274A1 (en) 1989-03-23

Family

ID=5592002

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19883822274 Withdrawn DE3822274A1 (en) 1987-09-02 1988-07-01 Objective having telecentric beam path

Country Status (3)

Country Link
JP (1) JPS6472113A (en)
DD (1) DD263605A1 (en)
DE (1) DE3822274A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4208635C1 (en) * 1992-03-18 1993-07-22 Jenoptik Gmbh, O-6900 Jena, De Telecentric objective lens with double Gaussian objective - couples lens contents into image conducting fibres with higher illuminating strength at picture edges

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116027528B (en) * 2023-03-29 2023-06-09 深圳市东正光学技术股份有限公司 Coaxial telecentric optical imaging system, illumination system and imaging device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4208635C1 (en) * 1992-03-18 1993-07-22 Jenoptik Gmbh, O-6900 Jena, De Telecentric objective lens with double Gaussian objective - couples lens contents into image conducting fibres with higher illuminating strength at picture edges

Also Published As

Publication number Publication date
DD263605A1 (en) 1989-01-04
JPS6472113A (en) 1989-03-17

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