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.
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©2016 THOSS Media & De Gruyter
Articles in the same Issue
- 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
Articles in the same Issue
- 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
