Curved detectors for wide field imaging systems: impact on tolerance analysis
Abstract
In the present paper we consider quantitative estimation of the tolerances widening in optical systems with curved detectors. The gain in image quality allows to loosen the margins for manufacturing and assembling errors. On another hand, the requirements for the detector shape and positioning become more tight. We demonstrate both of the effects on example of two optical designs. The first one is a rotationally-symmetrical lens with focal length of 25 mm, f-ratio of 3.5 and field of view equal to 72°, working in the visible domain. The second design is a three-mirror anastigmat telescope with focal length of 250 mm, f-ratio of 2.0 and field of view equal to 4°x4°. In both of the cases use of curved detectors allow to increase the image quality and substantially decrease the requirements for manufacturing precision.
Additional Information
© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE). The authors acknowledge the support of the European Research council through the H2020 - ERC-STG-2015 – 678777 ICARUS program. This research was partially supported by the HARMONI instrument consortium. We also would like to thank Pierre Baron from Altechna Company for fruitful discussions, which helped us to state the aim of this study.Attached Files
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Additional details
Identifiers
- Eprint ID
- 92004
- Resolver ID
- CaltechAUTHORS:20190102-155138231
Funding
- European Research Council (ERC)
- 678777
- HARMONI instrument consortium
Dates
- Created
-
2019-01-03Created from EPrint's datestamp field
- Updated
-
2021-11-16Created from EPrint's last_modified field
Caltech Custom Metadata
- Caltech groups
- GALCIT
- Series Name
- Proceedings of SPIE
- Series Volume or Issue Number
- 10679