References
- SPIE v.816 Wyant, J. C.
- Appl. Opt. v.2 A. Offner
- Appl. Opt. v.18 Shafer, D. R.
- Opt. & Laser Technol. v.28 Puryayev, D. T.
- SPIE v.2210 Geyl, R.
- Appl. Opt. v.5 Evarhart, E.
Korean Journal of Optics and Photonics (한국광학회지)
- Volume 11 Issue 4
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- Pages.246-249
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- 2000
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- 1225-6285(pISSN)
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- 2287-321X(eISSN)
Null lens design for testing of elliptical surface
타원면경 측정 Null 렌즈 설계
Abstract
The null lens is designed for testing the elliptical (conic constant>O) mirror which is the third mirror of the off-axis Three Mirror Anastigmat (TMA) designed as a high resolution camera for remote sensing. The mixed type design is proposed as a new design type which has a small annular flat mirror, but has as twice sensitivity as the autostigmatic type design. It is also shown that the null lens of the Mixed type is better than that of the autostigmatic type in terms of the sensitivity of the wavefront distortion which is given as the magnitude of optical path difference with respect to the change of each surface parameters such as the radius of curvature, thickness of lenses and tested mirror.
고해상도 원격관측용 카메라오 설계된 비축 3반사 광학계의 제3거울인 타원면(원추계수>0) 형상측정 Null 렌즈를 설계하였다. Null 렌즈 설계방식으로는 측정감도는 2배로 높으면서 작은 기준 평면경을 사용하는 혼합방식을 제안하였다. 혼합방식과 autostigmatic 방식으로 설계한 Null 렌즈의 광파면 왜곡 민감도를 비교하여 혼합방식이 보다 유리한 Null 측정 광학게임을 제시하였다.
Keywords