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DE1056921B - Lens with f-stops - Google Patents

Lens with f-stops

Info

Publication number
DE1056921B
DE1056921B DEW18507A DEW0018507A DE1056921B DE 1056921 B DE1056921 B DE 1056921B DE W18507 A DEW18507 A DE W18507A DE W0018507 A DEW0018507 A DE W0018507A DE 1056921 B DE1056921 B DE 1056921B
Authority
DE
Germany
Prior art keywords
lens
numbers
lateral surface
stops
aperture
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
DEW18507A
Other languages
German (de)
Inventor
Ernst Krull
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.)
WILHELM WILL KG
Original Assignee
WILHELM WILL KG
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 WILHELM WILL KG filed Critical WILHELM WILL KG
Priority to DEW18507A priority Critical patent/DE1056921B/en
Publication of DE1056921B publication Critical patent/DE1056921B/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/52—Details

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lens Barrels (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Diaphragms For Cameras (AREA)

Description

909 509/ί24909 509 / ί24

Claims (2)

PatentansprOche :Patent claims: 1. Objektiv mit Blendenzahlen, die durch die Randstrahlten des durch die Linse eintretenden Lichtbündels beleuchtet werden, dadurch gekennzeichnet, daß die Blendenzahlen (12) auf der nach außen weisenden Mantelfläche (11) einer Linsenfassung (9) angebracht sind, wobei diese Mantelfläche entgegen der Richtung der einfallenden Lichtstrahlen (13) konisch derart verjüngt ist, daß zwischen ihr und dem davorliegenden Fassungsteil ein Ringspalt entsteht, der vom Rand der darüberliegenden Linse bedeckt ist.1. Lens with f-numbers, which are determined by the marginal rays of the entering through the lens Light beam are illuminated, characterized in that the aperture numbers (12) on the after outside facing lateral surface (11) of a lens mount (9) are attached, this lateral surface is tapered conically against the direction of the incident light rays (13) such that an annular gap arises between it and the frame part in front of it, which is drawn from the edge of the overlying lens is covered. 2. Objektiv nach Anspruch 1, dadurch gekennzeichnet, daß die Blendenzahlen (12) auf der Mantelfläche (11) einer feststehenden inneren Fassung (9) aufgetragen und durch eine im Blendeueinstellring (3) angeordnete Öffnung (15) ablesbar sind.2. Lens according to claim 1, characterized in that the aperture numbers (12) on the Outer surface (11) of a fixed inner holder (9) applied and through a diaphragm adjustment ring (3) arranged opening (15) can be read.
DEW18507A 1956-02-24 1956-02-24 Lens with f-stops Pending DE1056921B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEW18507A DE1056921B (en) 1956-02-24 1956-02-24 Lens with f-stops

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW18507A DE1056921B (en) 1956-02-24 1956-02-24 Lens with f-stops

Publications (1)

Publication Number Publication Date
DE1056921B true DE1056921B (en) 1959-05-06

Family

ID=7596265

Family Applications (1)

Application Number Title Priority Date Filing Date
DEW18507A Pending DE1056921B (en) 1956-02-24 1956-02-24 Lens with f-stops

Country Status (1)

Country Link
DE (1) DE1056921B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4208102A (en) * 1977-09-16 1980-06-17 Asahi Kogaku Kogyo Kabushiki Kaisha Enlargement lens mount

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR848852A (en) * 1938-01-28 1939-11-08 Durst Iris graduation illumination device for the lenses of photographic magnifiers

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR848852A (en) * 1938-01-28 1939-11-08 Durst Iris graduation illumination device for the lenses of photographic magnifiers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4208102A (en) * 1977-09-16 1980-06-17 Asahi Kogaku Kogyo Kabushiki Kaisha Enlargement lens mount

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