DE1237355B - Seven-lens magnifying glass - Google Patents

Seven-lens magnifying glass

Info

Publication number
DE1237355B
DE1237355B DE1964O0010501 DEO0010501A DE1237355B DE 1237355 B DE1237355 B DE 1237355B DE 1964O0010501 DE1964O0010501 DE 1964O0010501 DE O0010501 A DEO0010501 A DE O0010501A DE 1237355 B DE1237355 B DE 1237355B
Authority
DE
Germany
Prior art keywords
magnifying glass
lens
lens magnifying
eye
focal length
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.)
Pending
Application number
DE1964O0010501
Other languages
German (de)
Inventor
Franz Schlegel
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.)
Optische Werke G Rodenstock
Original Assignee
Optische Werke G Rodenstock
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 Optische Werke G Rodenstock filed Critical Optische Werke G Rodenstock
Priority to DE1964O0010501 priority Critical patent/DE1237355B/en
Priority to CH800865A priority patent/CH441806A/en
Priority to NL6507906A priority patent/NL6507906A/xx
Publication of DE1237355B publication Critical patent/DE1237355B/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B25/00Eyepieces; Magnifying glasses
    • G02B25/001Eyepieces

Landscapes

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

Description

Siebenlinsige Lupe Die Erfindung bezieht sich auf eine siebenlinsige Lupe, deren augenseitige Schnittweite mindestens das 0,8fache ihrer Brennweite beträgt, so daß es möglich ist, sie mit 8 bis 9 mm Brennweite, also einer etwa 30fachen Vergrößerung zu benutzen. Darüber hinaus ist sie für ein Öffnungsverhältnis von mindestens 1: 1 sphärisch korrigiert; der Durchmesser der Austrittspupille ist also mindestens gleich ihrer Brennweite. Die Lupe kann auch als Okular benutzt werden, also für die Betrachtung eines in der Luft entworfenen Bildes an Stelle für die Betrachtung eines beleuchteten diffus streuenden oder leuchtenden ebenen Objektes, beispielsweise der Bildfläche einer Kathodenstrahlröhre. Dabei beträgt der Bildwinkei mindestens 50'; Farbfehler und Farbvergrößerungsfehler sind weitgehend korrigiert.Seven-lens magnifying glass The invention relates to a seven-lens magnifying glass whose focal length on the eye side is at least 0.8 times its focal length, so that it is possible to use it with a focal length of 8 to 9 mm , that is to say approximately 30 times magnification. In addition, it is spherically corrected for an aperture ratio of at least 1: 1; the diameter of the exit pupil is therefore at least equal to its focal length. The magnifying glass can also be used as an eyepiece, i.e. for viewing an image designed in the air instead of viewing an illuminated, diffusely scattering or luminous flat object, for example the image surface of a cathode ray tube. The angle of view is at least 50 '; Color errors and color magnification errors are largely corrected.

Diese Aufgabe wird durch eine siebenlinsige Anlage gemäß der Erfindung gelöst. Sie besteht aus einem dreilinsig verkitteten meniskenförnügen Glied, dessen Hohlseite der zu betrachtenden Gegenstandsebene zugekehrt ist; in Richtung auf das Auge folgen zwei einzelne unsymmetrische Bikonvexhnsen und schließlich ein stark gekrümmter, aus zwei Linsen verkitteter, nach dem Auge zu hohler Meniskus.This object is achieved by a seven-lens system according to the invention solved. It consists of a three-lens cemented meniscus member, its Hollow side facing the object plane to be viewed; towards that Eye are followed by two single asymmetrical biconvex teeth and finally one strong curved meniscus, cemented from two lenses, too hollow towards the eye.

Für den genannten Korrektionszustand ist es wichtig, daß sich die Radien der äußeien Hohlflächen beider Menisken, die der Objektfläche bzw. dem Auge zugekehrt sind, sich - vom Vorzeichen abgesehen - wie 2: 1 bis 3: 1 verhalten. Weiter ist das Radienverhältnis der einzelnen Bikonvexlinsen von Belang. Sie kehren ihre krümmeren Seiten einander zu; das Radienverhältnis, wiederum vom Vorzeichen abgesehen, für die dem Auge zu liegende Bikonvexlinse soll zwischen 4: 1 und 6: 1 liegen, während es für die der Gegenstandsfläche zugekehrte Bi-Linse zwischen 1,5: 1 und 2,5: 1 ist, unabhängig von der Brechzahl des Glases für diese Sammellinsen.For the mentioned state of correction it is important that the radii of the outer hollow surfaces of both menisci, which face the object surface or the eye, behave - apart from the sign - as 2: 1 to 3: 1 . The radius ratio of the individual biconvex lenses is also important. They turn their crooked sides to one another; the radius ratio, again apart from the sign, for the biconvex lens facing the eye should be between 4: 1 and 6: 1 , while for the bi-lens facing the object surface it is between 1.5: 1 and 2.5: 1 , regardless of the refractive index of the glass for these converging lenses.

Einen erheblichen Anteil an der Korrektion hat die Brechzahl der beiden Gläser im augenseitigen Meniskus, die nicht unter 1,7 liegen soll.The refractive index of the two glasses in the meniscus on the eye side, which should not be less than 1.7 , plays a significant role in the correction.

In der Figur ist die erfindungsgemäße Lupe wiedergegeben; ihre Daten für f' = 1 sind folgende: Abstand der Objektebene -0,475 -1,719 nInye d, = 0,459 1,623/60,1 r2 -1,293 d2 = 0111 1,768/26,8 +2,279 d, = 0,564 1,623/60,1 r4 -1,324 11 = 0,012 r, +6,468 d4 = 0,300 1,694/5,6 r, -3,72 12 = 0,012 r7 +2,196 d, = 0,300 1,694/54,6 r, -10,95 1, = 0,012 r, -1,121 d, = 0,49 1,792/50,2 r,0 +2,573 d7 = 0,098 1,857/32,0 r" = 0,659 Augenabstand für co: 0,85 In the figure, the magnifying glass according to the invention is shown; their data for f ' = 1 are as follows: distance of the object plane -0.475 -1,719 nInye d, = 0.459 1.623 / 60.1 r2 -1.293 d2 = 0111 1.768 / 26.8 +2.279 d, = 0.564 1.623 / 60.1 r4 -1.324 11 = 0.012 r, +6.468 d4 = 0.300 1.694 / 5.6 r, -3.72 12 = 0.012 r7 +2.196 d, = 0.300 1.694 / 54.6 r, -10.95 1, = 0.012 r, -1.121 d, = 0.49 1.792 / 50.2 r, 0 + 2.573 d7 = 0.098 1.857 / 32.0 r " = 0.659 Eye relief for co: 0.85

Claims (1)

Patentanspruch: Siebenlinsige Lupe mit mindestens 50' Bildwinkel, einem Öffnungsverhältnis von mindestens 1: 1 und zwei unsymmetrischen Bi-Konvexlinsen, die von zwei Kittgliedern eingeschlossen sind, gekennzeichnet durch folgende Daten in beliebigen Maßeinheiten, wobei die Dicken und Abstände um ±5"1, der Gesamtbrennweite, die Flächenbrechkräfte um ±501, der Gesamtbrechkraft, die Brechzahlen ±0,02 und die Ny-Werte um zL3 abweichen können: Abstand der Objektebene -0,475 -1,719 nelnye. d, = 0,459 1,623/60,1 -1,293 d, = 0,11 1,768/26,8 +2,279 r4 -1,324 d, =0,564 1,623/60,1 11 = 0,012 r, +6,468 44 = 0,300 1,694/5,6 r., -3,72 1, = 0,012 r, +2,196 d, = 0,300 1,694/54,6 r8 -10,95 1, = 0,012 r, -1,121 d, = 0,49 1,792/50,2 r" +2,573 d, = 0,098 1,857/32,0 r,1 = 0,659 Augenabstand für oo: 0,85
In Betracht gezogene Druckschriften. Deutsche Patentschrift Nr. 835 201; P e r r i n , The Prineiples of Optics, 1932, S. 88, Fig. 38; B r i x n e r, Applied Optics, 1963, S. 1281 bis 1286.
Claim: Seven-lens magnifying glass with at least 50 ' angle of view, an aperture ratio of at least 1: 1 and two asymmetrical bi-convex lenses, which are enclosed by two cemented elements, characterized by the following data in any units of measurement, the thicknesses and distances by ± 5 "1, the total focal length, the refractive powers by ± 501, the total refractive power, the refractive indices ± 0.02 and the Ny values by zL3: Distance from the object plane -0.475 -1,719 nelnye. d, = 0.459 1.623 / 60.1 -1.293 d, = 0.11 1.768 / 26.8 +2.279 r4 -1.324 d, = 0.564 1.623 / 60.1 11 = 0.012 r, +6.468 44 = 0.300 1.694 / 5.6 r., -3.72 1, = 0.012 r, +2.196 d, = 0.300 1.694 / 54.6 r8 -10.95 1, = 0.012 r, -1.121 d, = 0.49 1.792 / 50.2 r " +2.573 d, = 0.098 1.857 / 32.0 r, 1 = 0.659 Eye relief for oo: 0.85
Documents considered. German Patent No. 835 201; Perrin , The Prineiples of Optics, 1932, p. 88, Fig. 38; Brixner, Applied Optics, 1963, pp. 1281-1286.
DE1964O0010501 1964-11-06 1964-11-06 Seven-lens magnifying glass Pending DE1237355B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE1964O0010501 DE1237355B (en) 1964-11-06 1964-11-06 Seven-lens magnifying glass
CH800865A CH441806A (en) 1964-11-06 1965-06-09 Seven-lens magnifying glass
NL6507906A NL6507906A (en) 1964-11-06 1965-06-21

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1964O0010501 DE1237355B (en) 1964-11-06 1964-11-06 Seven-lens magnifying glass

Publications (1)

Publication Number Publication Date
DE1237355B true DE1237355B (en) 1967-03-23

Family

ID=7352002

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1964O0010501 Pending DE1237355B (en) 1964-11-06 1964-11-06 Seven-lens magnifying glass

Country Status (3)

Country Link
CH (1) CH441806A (en)
DE (1) DE1237355B (en)
NL (1) NL6507906A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614209A (en) * 1970-02-24 1971-10-19 Chrysler Corp Wide angle-biocular eyepiece
DE2300203A1 (en) * 1972-01-14 1973-07-26 Optische Ind De Oude Delft Nv LUPE

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL171382C (en) * 1969-07-25 1983-03-16 Rodenstock Optik G Loupe.
CH651942A5 (en) * 1979-11-09 1985-10-15 Kern & Co Ag OPTICAL SYSTEM FOR NIGHT VISION DEVICE WITH IMAGE AMPLIFIER OR IMAGE CONVERTER.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE835201C (en) * 1946-04-18 1952-03-27 Verkaufs Ag Heinrich Wild S Ge Wide angle eyepiece

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE835201C (en) * 1946-04-18 1952-03-27 Verkaufs Ag Heinrich Wild S Ge Wide angle eyepiece

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614209A (en) * 1970-02-24 1971-10-19 Chrysler Corp Wide angle-biocular eyepiece
DE2300203A1 (en) * 1972-01-14 1973-07-26 Optische Ind De Oude Delft Nv LUPE

Also Published As

Publication number Publication date
CH441806A (en) 1967-08-15
NL6507906A (en) 1966-05-09

Similar Documents

Publication Publication Date Title
DE3029799C2 (en) Endoscope lens
DE2553395C2 (en) Endoscope lens
EP0310640B1 (en) Relay lens system
EP0571725A1 (en) Objective for endoscopes
DE3447893C2 (en)
DE1237355B (en) Seven-lens magnifying glass
DE3034560A1 (en) APPROACH LENSES
DE2746269B2 (en) Microscope objective for 40x magnification
DE2300203C2 (en) Magnifying glass
DE1273853B (en) Photographic or cinematographic lens with a large field of view
DE1994559U (en) SEEKER.
DE403706C (en) Photographic lens
DE1154288B (en) Gauss lens
DE2845170C3 (en) Microscope objective
DE667453C (en) Unbalanced photographic lens
DE2305473B2 (en) Endoscope optics
EP0721601B1 (en) Scanning system
DE571251C (en) Viewfinder for photographic cameras
DE2708691C2 (en) Magnifying glass
DE2841602A1 (en) LENS FOR FACSIMIL PRODUCTION
DE2904036A1 (en) OPTICAL SYSTEM FOR AN ENDOSCOPE
DE1053810B (en) In connection with a photographic lens to be used, with a dispersive effect, spherically, chromatically and astigmatically corrected optical attachment system for imaging or viewing objects under water
DE885619C (en) Bright, photographic lens consisting of three single lenses and one double lens
DE1960502C (en) Symmetrical lens for imaging on a scale of 1: 1
DE2151254C3 (en) Mirror lens