DE714129C - Adjustment device for brilliant finders on photographic apparatus - Google Patents

Adjustment device for brilliant finders on photographic apparatus

Info

Publication number
DE714129C
DE714129C DET52994D DET0052994D DE714129C DE 714129 C DE714129 C DE 714129C DE T52994 D DET52994 D DE T52994D DE T0052994 D DET0052994 D DE T0052994D DE 714129 C DE714129 C DE 714129C
Authority
DE
Germany
Prior art keywords
finders
brilliant
adjustment device
photographic apparatus
lines
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
DET52994D
Other languages
German (de)
Inventor
Dr Walther Thorner
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DET52994D priority Critical patent/DE714129C/en
Application granted granted Critical
Publication of DE714129C publication Critical patent/DE714129C/en
Expired 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
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/18—Focusing aids
    • G03B13/24—Focusing screens
    • G03B13/26—Focusing screens with magnifiers for inspecting image formed on screen

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Viewfinders (AREA)

Description

Einstellvorrichtung für Brillantsucher an photographischen Apparaten . Zusatz zum Patent 710 265 In dem Patent 7 i o 265 ist eine Einstellvorrichtung für Brillantsucher an photographischen Apparaten beschrieben. welche aus prismatischen Elementen besteht, die in der Einstellfläche angeordnet sind unileinen Raster aus parallelen Linien bilden. In diesem Raster erscheinen gerade Linien, sobald sie sich nicht in der Einstellebene befinden, gezackt.Adjustment device for brilliant finders on photographic apparatus. Addendum to Patent 710 265 Patent 710265 describes an adjustment device for brilliant finders on photographic apparatus. which consists of prismatic elements that are arranged in the setting surface form a single grid of parallel lines. In this grid, straight lines appear jagged as soon as they are not in the setting level.

Wenn man nun die Rasterlinien parallel den Bildgrenzen anordnet, wie es das Nächstliegende ist, so ergeben sich Schwierigkeiten dadurch, daß die meisten in der Natur vorkommenden geraden Linien senkrecht oder waagerecht verlaufen. Wenn man die Rasterlinien von oben nach unten legt, so erscheinen senkrechte Linien bei unscharfer Einstellung zwar seitlich abgelenkt, aber nicht .gezackt, da sie ja den -Rasterlinien parallel sind. Andererseits erscheinen waagerechte Linien, die die Rasterlinien senkrecht schneiden, nur in sich selbst verschoben, aber ebenfalls nicht gezackt. Dieselbe Erscheinung tritt bei waagerechten und senkrechten Gegenstandsknien auch ein, wenn die Rasterlinien von links nach rechts verlaufen, nur in umgekehrter Weise.If you now arrange the grid lines parallel to the image borders, how it is the most obvious, difficulties arise because most of them Straight lines occurring in nature run vertically or horizontally. if if the grid lines are laid from top to bottom, vertical lines appear at fuzzy setting deflected to the side, but not - Grid lines are parallel. On the other hand, horizontal lines appear that represent the Cut grid lines vertically, only shifted within themselves, but also not jagged. The same phenomenon occurs with horizontal and vertical object knees also one if the grid lines run from left to right, only in reverse Way.

Die Erfindung beseitigt diese Schwierigkeit dadurch, daß die Rasterlinien schräg zu den Bildgrenzen angeordnet sind, und zwar vorzugsweise in einem Winkel von ,45" zu ihnen. In diesem Fall werden sowohl senkrechte :als auch waagerechte Gegenstandslinien in zweckmäßiger Weise gebrochen, so daß sie gezackt erscheinen, sobald sich der Raster nicht in der Bildebene befindet.The invention overcomes this difficulty in that the raster lines are arranged obliquely to the image boundaries, preferably at an angle from, 45 "to them. In this case, both vertical: and horizontal Lines of objects appropriately broken so that they appear jagged, as soon as the grid is not in the image plane.

Claims (1)

PATENTANSPRUCH: Einstellvorrichtung für Brillantsucher an photographischen Apparaten, bestehend aus einem Raster prismatischer Elemente, nach Patent 710265, dadurch gekennzeichnet, .daß die Rasterlinien schräg zu den Seitenrändern des Bildes verlaufen, so daß sie mit ihnen - vorzugsweise Winkel von 45" bilden.PATENT CLAIM: Adjustment device for brilliant finders on photographic Apparatus, consisting of a grid of prismatic elements, according to patent 710265, characterized in .that the grid lines are oblique to the side edges of the image run so that they form an angle of 45 "with them - preferably.
DET52994D 1939-10-29 1939-10-29 Adjustment device for brilliant finders on photographic apparatus Expired DE714129C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET52994D DE714129C (en) 1939-10-29 1939-10-29 Adjustment device for brilliant finders on photographic apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET52994D DE714129C (en) 1939-10-29 1939-10-29 Adjustment device for brilliant finders on photographic apparatus

Publications (1)

Publication Number Publication Date
DE714129C true DE714129C (en) 1941-11-21

Family

ID=7564078

Family Applications (1)

Application Number Title Priority Date Filing Date
DET52994D Expired DE714129C (en) 1939-10-29 1939-10-29 Adjustment device for brilliant finders on photographic apparatus

Country Status (1)

Country Link
DE (1) DE714129C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE850107C (en) * 1948-04-16 1952-09-22 Telemaco Dr Corsi Optical system for checking the focus of an image designed by any optical system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE850107C (en) * 1948-04-16 1952-09-22 Telemaco Dr Corsi Optical system for checking the focus of an image designed by any optical system

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