DE501696C - Galilean telescope - Google Patents

Galilean telescope

Info

Publication number
DE501696C
DE501696C DEO14859D DEO0014859D DE501696C DE 501696 C DE501696 C DE 501696C DE O14859 D DEO14859 D DE O14859D DE O0014859 D DEO0014859 D DE O0014859D DE 501696 C DE501696 C DE 501696C
Authority
DE
Germany
Prior art keywords
chromatic
galilean telescope
deviation
eyepiece
longitudinal deviation
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.)
Expired
Application number
DEO14859D
Other languages
German (de)
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
Publication date
Priority to DEO14859D priority Critical patent/DE501696C/en
Application granted granted Critical
Publication of DE501696C publication Critical patent/DE501696C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Telescopes (AREA)
  • Lenses (AREA)

Description

Galileisches Fernrohr Es sind galileische Fernrohre mit aus zwei Linsen zusammengesetztem Objektiv und einfacher Okularlinse bekannt, bei denen im Gesamtsystem neben dem Astigmatismus schiefer Büschel entweder die chromatische Längsabweichung in der Achse oder die chromatische Vergrößerungsdifferenz behoben ist.Galilean telescope They are Galilean telescopes with two lenses compound lens and simple eyepiece lens known, where in the overall system in addition to the astigmatism of oblique tufts, either the longitudinal chromatic deviation in the axis or the chromatic magnification difference is eliminated.

Die Erfindung betrifft ein Galilei-Fernrohr, bei -welchem neben einem in bekannter Art aus liron- und Flintglas zusammengesetzten Objektiv für das Okular ein hochbrechendes und -wenig dispergierendes Schwerkron im Bereiche von 1zD = i, 59 bis i,63 und v = 55 bis 6z versendet wird, derart, daß außer der Korrektion des Astigmatismus schiefer Büschel, der sphärischen Abweichung in der Achse und der chromatischenVergrößerungsdifferenz auch die dhromatische Abweichung in der Achse unterhalb der physiologischen Merkbarkeitsgrenze bleibt, während die Verzeichnung innerhalb erträglicher Grenzen liegt.The invention relates to a Galileo telescope, in which, in addition to an objective for the eyepiece composed of liron and flint glass in a known manner, a high-refractive and low-dispersion heavy crown in the range of 1zD = 1.59 to 1.53 and v = 55 to 6z is sent in such a way that in addition to the correction of the astigmatism of oblique tufts, the spherical deviation in the axis and the chromatic magnification difference, the dhromatic deviation in the axis also remains below the physiological noticeable limit, while the distortion is within tolerable limits.

Die Abb. i der Zeichnung stellt ein Ausführungsbeispiel in natürlicher Größe dar. ,Die Herstellungsdaten sind: -i- 33,5 mm dl - 6,o mm "a» - - 1,5-z 33,5 mm d ., = i,o mm iah) # 1,6z -136,o mm da = 31,596 mm UD = 1 r'., = - 29,5 mm d4 = 1,o mm nn = 1,61 v - 56 y; - .-@- 29,5 mm Der ILorrektionszustand wird durch die Abb. z a bis z d veranschaulicht. Die restliche chromatische Abweichung in der Achse beträgt zwischen den Linien C und F des Wasserstoffspektrums o,12 dptr. Abb.aa stellt den Verlauf der sphärischen Längsabweichung, Abb. ab den des Astigniatisinus, Abb. :2c den Verlauf der chromatischen Vergrößerungsdifferenz und Abb. 2d die Verzeichnung dar.Fig. I of the drawing shows an exemplary embodiment in natural size., The manufacturing data are: -i- 33.5 mm dl - 6.0 mm "a» - - 1.5-z 33.5 mm d ., = i, o mm iah) # 1,6z -136, o mm da = 31.596 mm UD = 1 r '., = - 29.5 mm d4 = 1.0 mm nn = 1.61 v - 56 y; - .- @ - 29.5 mm The corrective state is illustrated in Figs. Za to zd. The remaining chromatic deviation in the axis between lines C and F of the hydrogen spectrum is 0.12 dptr. Fig.aa shows the course of the spherical longitudinal deviation, Fig. From that of the Astigniatisinus, Fig.: 2c shows the course of the chromatic magnification difference and Fig. 2d shows the distortion.

Claims (1)

PATENTANSPRUCH: Galileisches Fernrohr mit aus zwei miteinander verkitteten Linsen bestehendem Objektiv und einfachem Okular, bei welchem außer der sphärischen Längsabweichung und dem Astigmatismus schiefer Büschel auch die chromatische Längsabweichung und die chromatische Vergrößerungsdifferenz korrigiert sind, gekennzeichnet durch die Verwendung eines Glases im Okular, dessen Brechungsverrnögen tiD=1, 59 bis 1, 63 und dessen v-Wert der Farbenzerstreuung 55 bis 6z beträgt.PATENT CLAIM: Galilean telescope with two cemented together Lenses existing objective and simple eyepiece, in which apart from the spherical Longitudinal deviation and the astigmatism of oblique tufts also the chromatic longitudinal deviation and the chromatic magnification difference are corrected, indicated by the use of a glass in the eyepiece whose refractive power tiD = 1.59 to 1, 63 and the v-value of the color dispersion is 55 to 6z.
DEO14859D Galilean telescope Expired DE501696C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEO14859D DE501696C (en) Galilean telescope

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEO14859D DE501696C (en) Galilean telescope

Publications (1)

Publication Number Publication Date
DE501696C true DE501696C (en) 1930-07-06

Family

ID=7353804

Family Applications (1)

Application Number Title Priority Date Filing Date
DEO14859D Expired DE501696C (en) Galilean telescope

Country Status (1)

Country Link
DE (1) DE501696C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6061189A (en) * 1993-08-31 2000-05-09 Surgical Acuity, Inc. Through-the-lens binocular viewer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6061189A (en) * 1993-08-31 2000-05-09 Surgical Acuity, Inc. Through-the-lens binocular viewer

Similar Documents

Publication Publication Date Title
DE665520C (en) Photographic lens
DE501696C (en) Galilean telescope
DE2515321A1 (en) Ocular made of three elements, magnified 10 times
DE2809205A1 (en) Spectacle glass for masks - has lens of divergent powder of refraction cemented or fused to another of convergent powder
GB321078A (en) Large aperture lenses with improved colour correction
DE385465C (en) Anastigmatic telescope and microscope
DE465010C (en) Projection lens
DE2635141A1 (en) TWO-PIECE EYEPIECE WITH 10X MAGNIFICATION
DE927238C (en) Photographic telephoto lens
AT33776B (en) Spherically, chromatically and astigmatically corrected double lens.
DE634843C (en) Photographic lens
DE646896C (en) eyepiece
DE2648856A1 (en) COLLECTING MICROSCOPE LENS
DE904476C (en) Multi-unit eyepiece
CH218133A (en) Lens.
AT201883B (en)
DE976880C (en) Three-lens apochromatic objective
DE425146C (en) Photographic, spherically, chromatically and astigmatically corrected, distortion-free lens
DE660103C (en) Mangin mirror
DE1918907U (en) HIGH-LIGHT SCOPE SYSTEM, IN PARTICULAR FOR BINOCULAR PRISM LENSES
GB343228A (en) Improvements in or relating to telescopes or other optical instruments
DE423296C (en) Cemented spherically, chromatically and astigmatically corrected two-lens system
CH400600A (en) eyepiece
GB477448A (en) Improvements in and relating to objectives
CH307377A (en) Spherically, chromatically and astigmatically corrected lens.