| Autor: |
Tatyana V. Koroleva, Nikolay A. Denisov |
| Rok vydání: |
1996 |
| Předmět: |
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| Zdroj: |
SPIE Proceedings. |
| ISSN: |
0277-786X |
| Popis: |
Five original designs of iris diaphragms to overlap coaxes round and annular apertures of the multichannel mirror or lens-mirror objectives are considered. Authors have proposed three novel configurations of the iris diaphragm lobes and also several diaphragm designs where referred lobes have been combined with ordinary ones. Horse-shoe shape lobe has been basic for all types of proposed iris diaphragm designs. Firstly this lobe is a main part of fan-diaphragm to intercept mirror objective annular aperture. Secondary that had been a prototype for both moon shape lobe and flat ring shape one. Thirdly usual iris diaphragm should be formed annular zone diaphragm in combination with fan-diaphragm. Proposed iris diaphragms has been designed to intercept both annular and round apertures of mirror and lens-mirror objectives simultaneously as well alternately. Formulas for calculation geometrical parameters of different kinds of the lobes and their disposition on the stationary mountings have been adduced. One attends that total light losses through screening should not be more than 18 - 20%. Technical realization most of proposed iris diaphragm designs have to be of interest for purposes of electro-optical test facility. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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