Abstract
The high performance optical system is generally not easy to align. Particularly, if there are off-axis optical components in the system, the alignment is a very serious problem. Many researchers have reported that using sensitivity of some Zemike coefficients is useful in alignment. However, this method has a weak point in that it generates an accurate result only when the misalignments of component are located within the range where the sensitivities of coefficients are linear to the amount of misalignment. We developed the new method which allows larger misalignment at the early stage of alignment. It is to minimize the merit function of Zernike coefficients rather than to use sensitivities of coefficients. In this paper, we analyzed the cons and pros of conventional alignment method and our own method and demonstrated the accuracy and flexibility of our method by aligning the diameter 900 mm Cassegrain type collimator. Even though there was more than 1 mm decenter error, we could align the secondary mirror to the nominal position with just two trials.
| Original language | English |
|---|---|
| Title of host publication | Interferometry XIII |
| Subtitle of host publication | Applications |
| DOIs | |
| Publication status | Published - 2006 Oct 18 |
| Event | Interferometry XIII: Applications - San Diego CA, United States Duration: 2007 Aug 16 → 2007 Aug 17 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Volume | 6293 |
| ISSN (Print) | 0277-786X |
Other
| Other | Interferometry XIII: Applications |
|---|---|
| Country | United States |
| City | San Diego CA |
| Period | 07/8/16 → 07/8/17 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering
Cite this
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Computer aided alignment using Zernike coefficients. / Yang, Ho Soon; Kim, Sung Hee; Lee, Yun Woo; Song, Jae Bong; Rhee, Hyug Gyo; Lee, Hoi Yoon; Lee, Jae Hyeob; Lee, In Won; Kim, Sug Whan.
Interferometry XIII: Applications. 2006. 62930I (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 6293).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Computer aided alignment using Zernike coefficients
AU - Yang, Ho Soon
AU - Kim, Sung Hee
AU - Lee, Yun Woo
AU - Song, Jae Bong
AU - Rhee, Hyug Gyo
AU - Lee, Hoi Yoon
AU - Lee, Jae Hyeob
AU - Lee, In Won
AU - Kim, Sug Whan
PY - 2006/10/18
Y1 - 2006/10/18
N2 - The high performance optical system is generally not easy to align. Particularly, if there are off-axis optical components in the system, the alignment is a very serious problem. Many researchers have reported that using sensitivity of some Zemike coefficients is useful in alignment. However, this method has a weak point in that it generates an accurate result only when the misalignments of component are located within the range where the sensitivities of coefficients are linear to the amount of misalignment. We developed the new method which allows larger misalignment at the early stage of alignment. It is to minimize the merit function of Zernike coefficients rather than to use sensitivities of coefficients. In this paper, we analyzed the cons and pros of conventional alignment method and our own method and demonstrated the accuracy and flexibility of our method by aligning the diameter 900 mm Cassegrain type collimator. Even though there was more than 1 mm decenter error, we could align the secondary mirror to the nominal position with just two trials.
AB - The high performance optical system is generally not easy to align. Particularly, if there are off-axis optical components in the system, the alignment is a very serious problem. Many researchers have reported that using sensitivity of some Zemike coefficients is useful in alignment. However, this method has a weak point in that it generates an accurate result only when the misalignments of component are located within the range where the sensitivities of coefficients are linear to the amount of misalignment. We developed the new method which allows larger misalignment at the early stage of alignment. It is to minimize the merit function of Zernike coefficients rather than to use sensitivities of coefficients. In this paper, we analyzed the cons and pros of conventional alignment method and our own method and demonstrated the accuracy and flexibility of our method by aligning the diameter 900 mm Cassegrain type collimator. Even though there was more than 1 mm decenter error, we could align the secondary mirror to the nominal position with just two trials.
UR - http://www.scopus.com/inward/record.url?scp=33749678619&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33749678619&partnerID=8YFLogxK
U2 - 10.1117/12.678647
DO - 10.1117/12.678647
M3 - Conference contribution
AN - SCOPUS:33749678619
SN - 0819463728
SN - 9780819463722
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Interferometry XIII
ER -