Wavefront measurement of plastic lenses for mobile-phone applications
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Li-Ting Huang
Abstract
In camera lenses for mobile-phone applications, all lens elements have been designed with aspheric surfaces because of the requirements in minimal total track length of the lenses. Due to the diffraction-limited optics design with precision assembly procedures, element inspection and lens performance measurement have become cumbersome in the production of mobile-phone cameras. Recently, wavefront measurements based on Shack-Hartmann sensors have been successfully implemented on injection-molded plastic lens with aspheric surfaces. However, the applications of wavefront measurement on small-sized plastic lenses have yet to be studied both theoretically and experimentally. In this paper, both an in-house-built and a commercial wavefront measurement system configured on two optics structures have been investigated with measurement of wavefront aberrations on two lens elements from a mobile-phone camera. First, the wet-cell method has been employed for verifications of aberrations due to residual birefringence in an injection-molded lens. Then, two lens elements of a mobile-phone camera with large positive and negative power have been measured with aberrations expressed in Zernike polynomial to illustrate the effectiveness in wavefront measurement for troubleshooting defects in optical performance.
Acknowledgment
The authors would like to thank the Instrument Technology Research Center, National Applied Research Laboratories, for the support with measurement instruments, and the Ministry of Science and Technology in Taiwan, the Republic of China, for the research fund under contract no. MOST102-2221-E007-143.
References
[1] R. B. Johnson, V. N. Mahajan and S. Thibault, in: ‘Proc. of SPIE Vol. 9192 91920H-1’ (2014), p. 91920H.10.1117/12.2062418Suche in Google Scholar
[2] C. H. Tsai and W. Y. Chen, Optical lens assembly for image taking, US Patent 2014/0327975 A1.Suche in Google Scholar
[3] T. Steinich and V. Blahnik, Adv. Opt. Techn. 1, 51–58 (2012).10.1515/aot-2012-0002Suche in Google Scholar
[4] W. Michaeli, S. Hessner, F. Klaiber and J. Forster, CIRP Ann-Manuf. Tech. 56, 545–548 (2007).10.1016/j.cirp.2007.05.130Suche in Google Scholar
[5] C. Yang, L. Su, C. Huang, H. X. Huang, J. Castro, et al. Adv. Polym. Tech 30, 51–61 (2011).10.1002/adv.20211Suche in Google Scholar
[6] L. Li, T. W. Raasch and A. Y. Yi, Appl. Optics 24, 6022–6029 (2013).10.1364/AO.52.006022Suche in Google Scholar PubMed
[7] J. C. Wyant and K. Creath, Appl. Optics Optical Eng. 11, 2–34 (1992).Suche in Google Scholar
[8] D. R. Neal, D. J. Armstrong and W. T. Turner, Lasers as Tools for Manufacturing II, SPIE vol. 2993 (1997).10.1117/12.270030Suche in Google Scholar
[9] H. Liu, Z. Lu and F. Li, Optics Laser Tech. 37, 642–646 (2005).10.1016/j.optlastec.2004.09.001Suche in Google Scholar
[10] F. Merola, M. Paturzo, S. Coppola, V. Vespini and P. Ferraro, J. Micromech. Microeng. 19, 125006 (2009).10.1088/0960-1317/19/12/125006Suche in Google Scholar
[11] R. R. Rammage, D. R. Neal and R. J. Copland, in ‘Application of Shack-Hartmann Wavefront Sensing Technology to Transmissive Optic Metrology’ Adv. Characterization Tech. for Optical, Semiconductor, and Data Storage Comp., SPIE Vol. 4779, (2002).10.1117/12.451734Suche in Google Scholar
[12] Wavefront sensors, Available at: http://www.trioptics.com/products/wavefront-sensors/, Germany (2016), Accessed 12 April, 2016.Suche in Google Scholar
[13] D. Malacara, in ‘Optical Shop Testing, 3rd ed.’ (John-Wiley and Sons Inc., New York, 2007, Chapters 10–12), pp. 362–497.10.1002/9780470135976Suche in Google Scholar
[14] L. Li, T. W. Raasch, I. Sieber, E. Beckert, R. Steinkopf, et al. Appl. Optics 19, 4248–4255 (2014).10.1364/AO.53.004248Suche in Google Scholar PubMed
[15] T. Higashihara and M. Ueda, Macromolecules 48, 1915–1929 (2015).10.1021/ma502569rSuche in Google Scholar
©2016 THOSS Media & De Gruyter
Artikel in diesem Heft
- Cover and Frontmatter
- Community
- News from the European Optical Society
- News
- Conference Calendar
- Topical issue: Plastic optics
- Editorial
- Topical issue on plastic optics
- Tutorial
- Process influences and correction possibilities for high precision injection molded freeform optics
- Short Communication
- Diamond machining of steel molds for optical components
- Review Articles
- Additive manufacturing of optical components
- Precision injection molding of freeform optics
- Research Articles
- Methodology for the design, production, and test of plastic optical displacement sensors
- An integrated approach to design and fabrication of a miniature endoscope using freeform optics
- Wavefront measurement of plastic lenses for mobile-phone applications
- Diamond turning fabrication of an ultra-compact endoscope
Artikel in diesem Heft
- Cover and Frontmatter
- Community
- News from the European Optical Society
- News
- Conference Calendar
- Topical issue: Plastic optics
- Editorial
- Topical issue on plastic optics
- Tutorial
- Process influences and correction possibilities for high precision injection molded freeform optics
- Short Communication
- Diamond machining of steel molds for optical components
- Review Articles
- Additive manufacturing of optical components
- Precision injection molding of freeform optics
- Research Articles
- Methodology for the design, production, and test of plastic optical displacement sensors
- An integrated approach to design and fabrication of a miniature endoscope using freeform optics
- Wavefront measurement of plastic lenses for mobile-phone applications
- Diamond turning fabrication of an ultra-compact endoscope
