A NEW METHOD OF LENS CENTERING IN THE OPTICAL SYSTEM BY USING SPECIAL MOUNT
286 viewsKeywords:
Len’s decentering; Aberration; Coma; Manufacturing.Abstract
Decentration in lens systems (for example objectives) significantly degrades the quality of image, such as the coma. In order to reduce lens decentration, the lenses are centered while manufacturing, while gluing, while attachment in the mounts. Significant decrease in the lenses decentering in the mounts is achieved by using a special manufacturing equipment, which allow combining the optical axis of the lens with the base axis of the mount in assembly process. Solutions for coma's alignment by shifting, tilting and rotation their components are also provided in the construction of high-quality objectives (microscopes [1-7], photolithographic, aerophotographic). For optimization of methods for such adjustment the influence coefficients of decentering of each optical surface of the lens system on the value and sign of coma must be calculated and taken into account. In this paper, we propose a special mounting which combined with the Opticentric of Trioptics device to center the lenses. The results show that the decentering is significantly reduced (0.9µm) compared to (44.2µm) with using a reference mount.
References
[1]. S.M. Latyev, “The Design of Precision (Optical) Devices” (Politekhnika, St. Petersburg, 2007).
[2]. http://www.trioptics.com “Automated Centering and Bonding Machine”.
[3]. Stefan Frank, “Justierdrehen- eine Technologie fuer Hohleistungsoptik”. Bericht IMK № 14, Technische Universitaet Ilmenau, 2008.
[4]. Tabachkov A. G., Latyev S.M., Frolov D.N. “Standardizing the designs of lens microscope objectives” // Journal of Optical Technology 2011, Vol. 78. Issue 1, pp.30-34.; - 2011.
[5]. Latyev S.M., Smirov A.P., Voronin A.A., Theska R., Zocher P., Padun B.S., Yablochnikov E.I. “The concept of an automatic assembly lini for microscope objectives, based on adaptive selection of their components” // Optical Technology. - 2009. - Iss. 76. - N 7. - P. 436-439.
[6]. Latyev S.M., Smirnov A.P., Frolov D.N., Tabatschkov A.G., Theska R. “Providing target performance indices when automating the assembly of microscope objectives” // Optical Technology. - 2010. - Vol. 77. - N 1. - P. 38-41.
[7]. A.P. Smirnov and S. M. Latyev, “Mathematical model of automated assembly of microscope lenses,” Izv. Vyssh. Uchebn. Zaved. Prib. No. 11, 22 (2011).
[8]. S.M. Latyev, “Compensating the Errors in Optical Devices” (Mashinostroenie, Leningrad, 1985).
