DE2220236A1 - A process for the treatment of ground surfaces to reduce stray light - Google Patents
A process for the treatment of ground surfaces to reduce stray lightInfo
- Publication number
- DE2220236A1 DE2220236A1 DE19722220236 DE2220236A DE2220236A1 DE 2220236 A1 DE2220236 A1 DE 2220236A1 DE 19722220236 DE19722220236 DE 19722220236 DE 2220236 A DE2220236 A DE 2220236A DE 2220236 A1 DE2220236 A1 DE 2220236A1
- Authority
- DE
- Germany
- Prior art keywords
- top layer
- treatment
- ground
- metal layer
- sanded
- 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
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
- G02B1/113—Anti-reflection coatings using inorganic layer materials only
- G02B1/115—Multilayers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/005—Diaphragms
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Physical Vapour Deposition (AREA)
Description
Verfahren zur streulichtvermindernden. Behandlung geschliffener Flächen. Method for reducing stray light. Treatment of sanded surfaces.
1.1.
Beim Bau optischer Instrumente werden vielfach strahlengangbegrenzende fixe Blenden verwendet, die aber nicht Ursachc von unerwünschtem Streulicht sein sollen. Solche Blenden werden deshalb meist mattschwarz ablackiert, doch tritt häufig die Schwierigkeit auf, daß trotzdem die vom Licht getroffene Kante der Blende hell aufleuchtet, weil wegen der Oberflächeuspannung des verwendeten Lackes sich dieser von der Kante zurückzieht und so die Quelle des Streulichtes ungeschützt läßt. Besonders störend wirkt dies bei Frontlinsen von Mikroskopobjektiven nach Art von Fig. 1, in der,die Frontlinse selbst mit 10 bezeichnet ist. Die dem Objekt 11 zugewandie brechende Fläche 12 dieser Linse ist hohl geschliffen und -. poliert, während der Rest 13 matt plangeschliffen wird und,falls die Linse-nicht in einer Fåssung eingekittet istX der Halterung dient. Wie gross auch die Fläche 13 sein mag und wie sorgfältig sie gegen diffus reflektiertes oder gestrcutes Licht durch Ablackieren geschützt ist: stets bleibt eine selunale Zone an der kreisförmigen Kante zwischen 12 und 13 die Ursache von Lichtstreuung und damit von Kontrastverlust. When building optical instruments, beam path-delimiting are often used Fixed diaphragms are used, but these are not the cause of undesired stray light should. Such panels are therefore usually painted matt black, but this occurs frequently the difficulty that the light-struck edge of the diaphragm is still bright lights up because the surface tension of the lacquer used causes this withdraws from the edge, leaving the source of the scattered light unprotected. Particularly This has a disruptive effect in the case of front lenses of microscope objectives according to the type of FIG. 1, in that, the front lens itself is designated by 10. The one facing the object 11 Refractive surface 12 of this lens is ground and hollow. polished while the Remainder 13 ground matt will and, if the lens -not in one The holder is cemented in place and is used for the holder. How big the area 13 may be likes and how carefully they pass through against diffusely reflected or scattered light Ablackieren is protected: there always remains a selunal zone on the circular one Edge between 12 and 13 is the cause of light scattering and therefore a loss of contrast.
Ziel der Erfindung ist ein Verfahren'das diesc Mängel vermeidet, um den Schutz gegen Lichtstreuung auch auf das Gebiet der Kante selbst zu erstrecken0 Dementsprechend betrifft die vorliegende Erfindung ein Verfahren zur streulichtvermindernden Bchandlung von geschliffenen Flächen'gekennzeichnet durch folgenden Arbeitsablauf: 1) Eine Deckschicht aus Wachs, Lack oder dergl. wird sowohl auf die geschliffenen als auch auf die ihnen benachbarten polierten Flächen aufgebracht.The aim of the invention is a method that avoids these deficiencies in order to to extend protection against light scattering to the area of the edge itself0 Accordingly, the present invention relates to a method for reducing stray light Treatment of ground surfaces' characterized by the following workflow: 1) A top layer of wax, varnish or the like is sanded on both as well as applied to the polished surfaces adjacent to them.
2) Durch Nachschleifen wird die Deckschicht von den geschliffenen Flächen entfernt.2) By regrinding the top layer is removed from the sanded Areas removed.
3) Eine dünne Metall schicht wird vorzugsweise durch Aufdampfen im Hochvakuum dort aufgebracht, wo die Deckschicht abgeschliffen wurde.3) A thin metal layer is preferably by vapor deposition in the High vacuum applied where the top layer was sanded off.
4) Die verbliebenen Reste der Deckschicht samt der, auf ihr liegenden Metall schicht erden durch BeH handlung mit einem die Deckschicht lösenden Lösungsmittel abgelöst.4) The remnants of the top layer including the one lying on it Ground the metal layer by treating it with a solvent that dissolves the top layer replaced.
Es;hat sich gezeigt, daß beim erfindungsgemäßen Verfahren die aufgedampfte Metallschicht auf der mattgeschliff.enen Fläche als völlig streulichtfreie Blende wirkt und.daß diese Blende bis zur Kante und auch noch an der Kante wirkt. Erfindungsgemäße Ausgestaltungen betreffen die Verwendung von in alkohol oder Aceton leicht löslichem Abdecklack und die Verwendung von Chrom als Material für die aufgedampfte Metallschicht.It has been shown that in the process according to the invention, the vapor-deposited Metal layer on the matt ground surface as a completely stray light-free cover acts and. that this diaphragm works up to the edge and also on the edge. According to the invention Refinements relate to the use of readily soluble in alcohol or acetone Masking lacquer and the use of chrome as a material for the vapor-deposited metal layer.
./. Patentansprüche ./. Claims
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT551271 | 1971-06-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2220236A1 true DE2220236A1 (en) | 1972-12-28 |
Family
ID=3576607
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19722220236 Pending DE2220236A1 (en) | 1971-06-25 | 1972-04-25 | A process for the treatment of ground surfaces to reduce stray light |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2220236A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3004703A1 (en) * | 1979-02-08 | 1980-08-14 | Ricoh Kk | DEVICE FOR FEELING A FOCUS |
WO2004029687A1 (en) * | 2002-09-25 | 2004-04-08 | Koninklijke Philips Electronics N.V. | Non-symmetrical aperture stop |
-
1972
- 1972-04-25 DE DE19722220236 patent/DE2220236A1/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3004703A1 (en) * | 1979-02-08 | 1980-08-14 | Ricoh Kk | DEVICE FOR FEELING A FOCUS |
WO2004029687A1 (en) * | 2002-09-25 | 2004-04-08 | Koninklijke Philips Electronics N.V. | Non-symmetrical aperture stop |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2912943A1 (en) | INFRARED REFLECTOR | |
DE2422298A1 (en) | PROCESS FOR PRODUCING A SURFACE WITH REDUCED REFLECTIVE CAPACITY FOR ELECTROMAGNETIC RAYS OF A CERTAIN WAVELENGTH RANGE | |
DE3218268A1 (en) | LIGHT-ABSORBING COATING WITH REFLECTIVE-REDUCING PROPERTIES | |
EP0313007A3 (en) | Mixture polymerised by visible light | |
DE2256435B2 (en) | Process for the production of a hollow cold light mirror | |
DE2220236A1 (en) | A process for the treatment of ground surfaces to reduce stray light | |
DE2833133C3 (en) | Acrylic mirror and process for its manufacture | |
DE112019007446T5 (en) | METHOD OF MANUFACTURING A PLASTIC ELEMENT PROVIDED WITH FINE SURFACE ROUGHNESS | |
DE1772545A1 (en) | lens | |
DE1022983B (en) | Area lighting device with an electric light source | |
DE2921178A1 (en) | REFLECTIVE REDUCTION LAYER ON HIGHLY REFLECTIVE SURFACES AND METHOD FOR THE PRODUCTION THEREOF | |
DE718040C (en) | Translucent mirror for optical purposes | |
DE1447207A1 (en) | Catadioptric microscope objective | |
DE3146150A1 (en) | Exposure mask for thin-film technology | |
DE865645C (en) | Process for matting the surfaces of solid objects | |
DE2952230A1 (en) | METHOD FOR PRODUCING A RECORDING CARRIER WITH A RECORDING OF HIGH INFORMATION DENSITY | |
DE102020127717A1 (en) | Coated component with a base structure made of a transparent material | |
DE10119124C1 (en) | Use of silver ions diffused into the outer surface of the jacket of a reflector to protect against UV radiation | |
DE3448369C2 (en) | ||
DE4106440C2 (en) | Ornament, process for their preparation and their use | |
DE684082C (en) | Process for the production of a durable surface silver coating that adheres firmly to glass | |
DE736376C (en) | Film gap observation | |
DE1088247B (en) | Four-element lens | |
DE862275C (en) | Process for making flexible unbreakable mirrors | |
DE1547442A1 (en) | Manufacturing process for zone plates |