碩士 / 國立雲林科技大學 / 電子工程系 / 105 / Fisheye lens contains a large field of view, because of this characteristic, fisheye lens can provide maximum image information from limited hardware. Nowadays, there are various applications based on fisheye lenses in technology such as panoramic application and monitoring camera. The feature of fisheye lens design in this paper is maintaining large field of view and big aperture, simultaneously using less material compare to patents.
In this paper, a new ultra-wide-angle fisheye lens design is proposed. The full-field incident light reaches 194 degrees, and the F / 1.8 aperture is used to improve the image quality under low light situation. This design contains 5 spherical glass lens and an aspheric plastic lens, a total of 6 pieces 5 groups of structures, with Sony's IMX377 model 1 / 2.3 inch sensor, ready to 4K video quality, lens length 19.33mm. In full field of view, the relative illumination is greater than 90% , the lateral color aberration is 1.2μm less than a pixel size, spot size is less than 3.6μm ,the field curvature is less than 0.05mm, the MTF value at 161lp / mm is greater than 0.5.
| Identifer | oai:union.ndltd.org:TW/105YUNT0393039 |
| Date | January 2017 |
| Creators | LIAO,TAI-YUAN, 廖泰源 |
| Contributors | LIN,CHING-HUANG, 林慶煌 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 83 |
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