AT62016B - Pentagonal corner mirror prism. - Google Patents
Pentagonal corner mirror prism.Info
- Publication number
- AT62016B AT62016B AT62016DA AT62016B AT 62016 B AT62016 B AT 62016B AT 62016D A AT62016D A AT 62016DA AT 62016 B AT62016 B AT 62016B
- Authority
- AT
- Austria
- Prior art keywords
- prism
- corner mirror
- mirror prism
- pentagonal
- pentagonal corner
- Prior art date
Links
- 239000011521 glass Substances 0.000 claims description 3
- 239000010453 quartz Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 241001212149 Cathetus Species 0.000 claims description 2
- 239000004568 cement Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Optical Elements Other Than Lenses (AREA)
Description
<Desc/Clms Page number 1>
Pentagonal- WI nkelsp iegelprlsma.
Die Herstellungskosten von Pentagonal-Winkelspiegelprismen aus Glas oder Quarz nehmen bekanntlich bei wachsender Grösse der Abmessungen schneller zu, als diese Abmessungen selbst. Es beruht dies darauf, dass grössere Blöcke von Glas oder Quarz schon im Rohzustande unverhältnismässig teuer sind. Eine andere nachteilige Folge von grossen Abmessungen bei solchen Prismen ist, dass optisch schädliche Spannungen in einem grösseren Block eher auftreten als in einem solchen von kleineren Abmessungen.
Will man zur Vermeidung dieser bei der Herstellung grösserer Pentagonal-Winkelspiegelprismen auftretenden Nachteile das Prisma aus zwei Teilen zusammenkitten, so geschieht dies nach vorliegender Erfindung am besten so, dass die Kittfläche senkrecht auf der Hauptschnittebene des Prismas steht, und dass sie (wie in der Zeichnung dargestellt) das Prisma so durchschneidet, dass von seinen zwei Bestandteilen der eine ein rechtwinkeliges Prisma ist, dessen Kathetenfächen als die Ein-und Austrittsfläche dienen und dessen (im dargestellten Falle ebene) Hypotenusenfäche verkittet ist.
Diese Anordnung bewirkt, dass keiner der beiden Bestandteile des Prismas mehr als zwei optisch wirksame (und dementsprechend zu bearbeitende Flächen) besitzt, und dass etwa an der Kittfläche entstehende Ablenkungen sich aufheben.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Pentagonal angled mirror imprint.
As is known, the production costs of pentagonal corner mirror prisms made of glass or quartz increase faster with increasing size of the dimensions than these dimensions themselves. This is based on the fact that larger blocks of glass or quartz are disproportionately expensive even in their raw state. Another disadvantageous consequence of large dimensions in such prisms is that optically harmful stresses occur more quickly in a larger block than in one of smaller dimensions.
If one wishes to cement the prism from two parts together in order to avoid these disadvantages occurring in the manufacture of larger pentagonal corner mirror prisms, this is best done according to the present invention so that the cement surface is perpendicular to the main sectional plane of the prism and that it (as in the drawing shown) cuts through the prism in such a way that one of its two components is a right-angled prism, the cathetus surfaces of which serve as the entry and exit surfaces and whose hypotenuse surface (which is flat in the case shown) is cemented.
This arrangement has the effect that neither of the two components of the prism has more than two optically effective surfaces (and surfaces to be processed accordingly), and that any deflections occurring on the cement surface cancel each other out.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT62016T | 1912-04-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT62016B true AT62016B (en) | 1913-11-10 |
Family
ID=3583917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT62016D AT62016B (en) | 1912-04-29 | 1912-04-29 | Pentagonal corner mirror prism. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT62016B (en) |
-
1912
- 1912-04-29 AT AT62016D patent/AT62016B/en active
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