WO2004095109A1 - Objectif de microscope plan-apochromatique - Google Patents

Objectif de microscope plan-apochromatique Download PDF

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Publication number
WO2004095109A1
WO2004095109A1 PCT/EP2004/003043 EP2004003043W WO2004095109A1 WO 2004095109 A1 WO2004095109 A1 WO 2004095109A1 EP 2004003043 W EP2004003043 W EP 2004003043W WO 2004095109 A1 WO2004095109 A1 WO 2004095109A1
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WO
WIPO (PCT)
Prior art keywords
lens
focal length
positive
lenses
negative
Prior art date
Application number
PCT/EP2004/003043
Other languages
German (de)
English (en)
Inventor
Manfred MATTHÄ
Rainer Danz
Ingo Fahlbusch
Original Assignee
Carl Zeiss 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 Carl Zeiss Jena Gmbh filed Critical Carl Zeiss Jena Gmbh
Publication of WO2004095109A1 publication Critical patent/WO2004095109A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B21/00—Microscopes
    • G02B21/02—Objectives

Definitions

  • Patent specification DE 24 54 994 C3 describes a microscope objective which does not require immersion liquid and which consists of nine lenses. With this lens, numerical apertures of approx. 0.75 can be achieved. However, this value is clearly below the maximum numerical aperture of 0.95 that is possible for air.
  • the object of the invention is to develop a plan-apochromatic microscope objective with a numerical aperture in air that is as high as possible, which also record the largest possible object field and also with as much as possible little lens should get along to keep the manufacturing costs as low as possible.
  • a plan-apochromatic microscope objective which comprises a first, second, third, fourth and fifth lens element in order from the object plane.
  • the first lens element has a positive overall focal length and consists of a first lens whose center of curvature is located on the object side.
  • the second lens element also has a positive overall focal length and consists of a second lens with a negative focal length and a third lens with a positive focal length, the two lenses being cemented together.
  • the difference in the refractive powers of the first lens element and the second lens element is not greater than 25%.
  • the third lens element has a positive overall focal length of more than 50 mm. It consists of a fourth lens with a negative focal length and a fifth lens with a positive focal length, both of which are cemented together.
  • the fourth lens element also has a positive total focal length of at most 35 mm and consists of a sixth lens with a positive focal length, a seventh lens with a negative focal length and an eighth lens with a positive focal length.
  • the amount of the focal length of the seventh lens is smaller than the focal lengths of the sixth and eighth lenses.
  • all three lenses are cemented to one another, ie the sixth lens with the seventh lens and this in turn on its image side with the eighth lens.
  • the fifth lens element has a total negative focal length between -20 mm and -8 mm and consists of a ninth lens with a positive focal length and a tenth lens with a negative focal length, both lenses are cemented together.
  • the highest possible numerical aperture of 0.95 in air is achieved with a total of ten lenses.
  • the recorded object field has a diameter of 0.5 mm and is therefore larger than average.
  • a magnification of 50x a leveled image with a diameter of 25 mm is illuminated.
  • the image is apochromatic, the image quality in the entire visual area is very good: all color deposits defined in this area up to the ultraviolet area, i.e. imaging errors that arise due to the use of light composed of many wavelengths, are significantly smaller than the wave-optical depth of field.
  • the aperture angle is substantially reduced by the first lens element, which results in spherical and chromatic under-correction.
  • the spherical error is mainly compensated for in the third lens element, that of the longitudinal color error, ie the error in depth when imaging a point in a point, essentially in the fifth lens element.
  • the opening angle is further reduced in the second lens element.
  • the necessary parts for correcting the astigmatism, the coma and the Petzval sum are generated.
  • the relative wave-optical distortion at the field edge is less than 0.3%.
  • the tolerances for the radii are - given in Newton rings - less than 4 and the deviations in the lens thicknesses and distances are less than 0.06 mm.
  • the maximum deviations in the refractive indices should not exceed 5-10 4 , and the relative deviations in the number of refractions should be less than 0.5%.
  • Fig.l a possible lens construction and Fig.2 transverse aberrations at different wavelengths in the center of the image, in the image zone and at the edge of the image for a lens designed according to the design data of the subclaim.
  • Fig.l shows a sectional view of the lens according to the invention.
  • the object level is on the far left and not shown.
  • the object plane closest is a first lens element Gl, which consists of a first lens L1, the center of radius of curvature of which are both located on the object side.
  • the focal length of the first lens L1 is positive.
  • This is followed by a second lens element G2 with a positive overall focal length at a distance of approximately 0.1 mm.
  • the second lens element G2 is composed of a second lens L2 with a negative focal length and a third lens L3 with a positive focal length, both lenses L2 and L3 are cemented together.
  • the difference in the refractive powers of the first lens element G1 and the second lens element G2 is not more than 25%.
  • a third lens element G3 follows with a positive overall focal length which is greater than 50 mm.
  • the third lens element G3 consists of a fourth lens L4 with a negative focal length and a fifth lens L5 with a positive focal length. Both lenses L4 and L5 are kitted together. tet.
  • This is followed by a fourth lens element G4 with a positive total focal length of at most 35 mm, it consists of a sixth lens L6 with a positive focal length, a seventh lens L7 with a negative focal length and an eighth lens L8 with a positive focal length. All three lenses L6, L7 and L8 are cemented together, the amount of the focal length of the seventh lens L7 is smaller than the respective focal lengths of the sixth lens L6 and the eighth lens L8.
  • the fourth lens element G4 also has the essential difference from the microscope objective described in US Pat. No. 5,444,573.
  • the group corresponding to the fourth lens element G4 has a different refractive power sequence and overall negative refractive power, which is why the collecting effect of the lenses in front of it is also much stronger than in the present invention.
  • the fourth lens element G4 is followed last by a fifth lens element G5, which has a negative overall focal length between -20 mm and -8 mm. It consists of a ninth lens L9 with a positive focal length and a tenth lens L10 with a negative focal length, both lenses L9 and L10 are cemented together.
  • the refractive indices relate to a wavelength of 546.07 nm, the number of copies v e were, as in the subclaim, from the equation
  • n e is the refractive index at a wavelength of 546.07 nm
  • n c the refractive index at a wavelength of 643.85 nm
  • n F the refractive index at a wavelength of 479.99 nm.
  • the transverse aberration that is to say the lateral deviations in the imaging of a point into a point at three points in the image field - in the center of the image (a) the image zone (b) and the image edge (c) - shown for three different wavelengths.
  • the transverse aberrations at a wavelength of 546.07 nm are shown with a solid line, at a wavelength of 643.85 nm with a dashed line and at a wavelength of 479.99 nm with a dotted line.
  • a graduation on the y-axis corresponds to 0.05 mm.
  • the transverse aberrations for the color "green" at 546.07 nm are in the meridional course with a solid line Line and indicated in the sagittal course with a dash-dot line.
  • the gutter error in the sagittal section is indicated on one side as a dash-dot-dot line along the opening coordinate.
  • the channel defect is caused by sagittal coma, which causes the sagittal rays in the image space to span a channel-shaped curved surface. As you can see, the lens has very well corrected values for all wavelengths, which are below the visibility limit over the entire image field.

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

L'invention concerne un objectif de microscope plan-apochromatique. Un objectif de microscope de ce type comporte cinq ensembles de lentille(s) formant un total de dix lentilles. Le premier ensemble, vu du plan d'objet, à focale totale positive comporte une lentille dont les centres de courbure de rayons sont situés côté objet. Le deuxième ensemble se compose de deux lentilles collées l'une à l'autre de la séquence de puissance « négative-positive », vue du plan d'objet, à focale totale positive, la différence de puissance entre le premier et le deuxième ensemble étant inférieure à 25 %. Le troisième ensemble se compose de deux lentilles collées l'une à l'autre de la séquence de puissance « négative-positive » d'une focale totale supérieure à 50 mm. Le quatrième ensemble se compose de trois lentilles collées les unes aux autres de la séquence de puissance « positive-négative-positive » d'une focale totale positive d'au maximum 35 mm, la valeur de la focale de la lentille centrale étant inférieure aux valeurs respectives des focales des lentilles extérieures. Le cinquième ensemble se compose de deux lentilles collées l'une à l'autre de la séquence de puissance « positive-négative » d'une focale totale négative comprise entre -20 mm et -8 mm.
PCT/EP2004/003043 2003-04-23 2004-03-23 Objectif de microscope plan-apochromatique WO2004095109A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003118264 DE10318264B4 (de) 2003-04-23 2003-04-23 Plan-apochromatisches Mikroskopobjektiv
DE10318264.0 2003-04-23

Publications (1)

Publication Number Publication Date
WO2004095109A1 true WO2004095109A1 (fr) 2004-11-04

Family

ID=33154339

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2004/003043 WO2004095109A1 (fr) 2003-04-23 2004-03-23 Objectif de microscope plan-apochromatique

Country Status (2)

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DE (1) DE10318264B4 (fr)
WO (1) WO2004095109A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101438197B (zh) * 2006-05-05 2012-03-21 卡尔蔡司微成像有限责任公司 显微镜物镜
CN108254911A (zh) * 2018-01-25 2018-07-06 张佳 一种显微镜物镜
TWI718617B (zh) * 2019-08-12 2021-02-11 大陸商信泰光學（深圳）有限公司 光學鏡頭（六）
US20220082803A1 (en) * 2020-09-17 2022-03-17 Zhejiang Sunny Optics Co.,Ltd. Optical Imaging Lens Assembly

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5132845A (en) * 1990-07-06 1992-07-21 Olympus Optical Co., Ltd. High mangification objective lens system
US5444573A (en) * 1992-12-10 1995-08-22 Olympus Optical Co., Ltd. Microscope objective
JPH11352407A (ja) * 1998-06-05 1999-12-24 Nikon Corp 顕微鏡対物レンズ

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2454994C3 (de) * 1973-11-27 1981-11-19 Société d'Optique, Précision, Electronique & Mécanique-SOPELEM, Paris Mikroskop-Objektiv
US4059342A (en) * 1975-01-28 1977-11-22 Olympus Optical Co., Ltd. Microscope objective with correcting means
US4379623A (en) * 1980-04-28 1983-04-12 Warner Lambert Technologies, Inc. 40x Microscope objective

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5132845A (en) * 1990-07-06 1992-07-21 Olympus Optical Co., Ltd. High mangification objective lens system
US5444573A (en) * 1992-12-10 1995-08-22 Olympus Optical Co., Ltd. Microscope objective
JPH11352407A (ja) * 1998-06-05 1999-12-24 Nikon Corp 顕微鏡対物レンズ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 03 30 March 2000 (2000-03-30) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101438197B (zh) * 2006-05-05 2012-03-21 卡尔蔡司微成像有限责任公司 显微镜物镜
CN108254911A (zh) * 2018-01-25 2018-07-06 张佳 一种显微镜物镜
TWI718617B (zh) * 2019-08-12 2021-02-11 大陸商信泰光學（深圳）有限公司 光學鏡頭（六）
US20220082803A1 (en) * 2020-09-17 2022-03-17 Zhejiang Sunny Optics Co.,Ltd. Optical Imaging Lens Assembly

Also Published As

Publication number Publication date
DE10318264B4 (de) 2010-12-30
DE10318264A1 (de) 2004-11-11

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