DE76662C - Spherical, chromatic and astigmatic corrected double objective - Google Patents

Spherical, chromatic and astigmatic corrected double objective

Info

Publication number
DE76662C
DE76662C DENDAT76662D DE76662DA DE76662C DE 76662 C DE76662 C DE 76662C DE NDAT76662 D DENDAT76662 D DE NDAT76662D DE 76662D A DE76662D A DE 76662DA DE 76662 C DE76662 C DE 76662C
Authority
DE
Germany
Prior art keywords
spherical
objective
focal length
medium
lens
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 - Lifetime
Application number
DENDAT76662D
Other languages
German (de)
Original Assignee
DR. R. steinheil in München, Landwebrstr. 31
Publication of DE76662C publication Critical patent/DE76662C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/04Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having two components only

Landscapes

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

Description

R2=-56,830
R4,= + 26,830
R 2 = -56.830
R 4 , = + 26.830
LL. Il Il Il IlIl Il Il Il 26,830
13,817
27,667
26,140.
26,830
13.817
27.667
26,140.
1,617591.61759
GlasdickenGlass thicknesses und Abstand:and distance: LL. Glasarten:Glass types: 1,52561
I,58805
1.52561
I, 58805
d1 = 2,96 d 1 = 2.96 d7 = 0,91 d 7 = 0.91 ■1 nD- ■ 1 n D- = 1,61003; tip == 1.61003; tip = 1,524271.52427 ds = 0,91
Abstand d5 = 3,41
d s = 0.91
Distance d 5 = 3.41
dn = 3,,8 d n = 3,, 8 = 1,51874; tip =
= 1,57804; nF =
= 1.51874; tip =
= 1.57804; n F =
■inn-■ i n n- = 1,51804; np = = 1.51804; n p =

Claims (1)

KAISERLICHESIMPERIAL PATENTAMT.PATENT OFFICE. Es ist eine bekannte Thatsache, dafs von zwei aus mehreren Linsen verkitteten Objectiven von gleichem Constructionstypus dasjenige besser astigmatisch corrigirt ist, welches eine Trennungsfläche zwischen zwei Medien aufweist, welche entweder dem auffallenden Licht die concave Seite zukehrt, wenn das erste Medium stärkere brechende Kraft besitzt, oder die convexe Seite, wenn das erste .Medium schwächere brechende Kraft besitzt.It is a well-known fact that two objectives cemented together from several lenses of the same type of construction that is better astigmatically corrected which one Has separation surface between two media, which is either the incident light the concave side faces when the first medium has a stronger refractive power, or the convex side when the first medium has weaker refractive power. Wählt man als Objectivtypus einen ähnlichen, wie ihn Dr. Adolph Steinheil im Jahre 1880 (Patent Nr. 16354) gegeben hat, so gelingt es, je eine der vorbezeichneten Brechungen in der Vorder- und in der Hinterlinse anzubringen. Die eine der beiden Linsen mufs dann zur Correctur der sphärischen Abweichung nothwendigerweise auch eine Trennungsfläche Radien:If one chooses a type of objective similar to that used by Dr. Adolph Steinheil in 1880 (Patent No. 16354) has given, it is possible to use one of the aforementioned refractions in the To be attached in the front and in the rear lens. One of the two lenses must then be used Correcting the spherical deviation necessarily also includes a surface of separation Radii: zwischen zwei Medien besitzen, welche dem auffallenden Licht die convexe Seite zuwendet, wenn dies erste Medium stärker bricht, oder umgekehrt. Auf diese Weise gelingt es, eine Combination zu finden, die sphärisch, chromatisch und astigmatisch corrigirt ist, bestehend aus einer Vorderlinse, welche sphärische und chromatische Abweichung im Sinne einer einfachen Linse und eine positive Brennweite besitzt, die kürzer als das Gesammtobjectiv ist, während die Hinterlinse bei negativer Brennweite die entgegengesetzten sphärischen und chromatischen Abweichungen zeigt.have between two media, which turns the convex side towards the incident light, if this first medium breaks more strongly, or vice versa. In this way it is possible to create a Combination, which is spherically, chromatically and astigmatically corrected, consisting from a front lens, which spherical and chromatic aberration in the sense of a simple Lens and has a positive focal length that is shorter than the total objective, while the rear lens at negative focal length the opposite spherical and shows chromatic aberration. Ein nach diesem Princip construirtes Objectiv mit einem Oeffhungsverhältnifs 1,6 und der Brennweite 100 ist in Folgendem angegeben: An objective constructed according to this principle with an opening ratio of 1.6 and the focal length 100 is given in the following:
DENDAT76662D Spherical, chromatic and astigmatic corrected double objective Expired - Lifetime DE76662C (en)

Publications (1)

Publication Number Publication Date
DE76662C true DE76662C (en)

Family

ID=349535

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT76662D Expired - Lifetime DE76662C (en) Spherical, chromatic and astigmatic corrected double objective

Country Status (1)

Country Link
DE (1) DE76662C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2885928A (en) * 1958-03-12 1959-05-12 James G Baker Magnifier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2885928A (en) * 1958-03-12 1959-05-12 James G Baker Magnifier

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