The Illumination and Imaging of Coaxial System- Illumination Design of Visual Assistance Focusing
碩士 === 國立中央大學 === 光電科學與工程學系 === 104 === People usually take photographs by using camera for record life in recent years. Fill flash light is necessary when we’re doing a shoot at night for illumination. However, it makes to raise overexposure easy and effect image quality. In addition, the tradition...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2016
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| Online Access: | http://ndltd.ncl.edu.tw/handle/19874765768793917452 |
| Summary: | 碩士 === 國立中央大學 === 光電科學與工程學系 === 104 === People usually take photographs by using camera for record life in recent years. Fill flash light is necessary when we’re doing a shoot at night for illumination. However, it makes to raise overexposure easy and effect image quality. In addition, the traditional flash can’t simultaneously fill light and shoot. In order to deal with the problem mentioned above and to be sure the illuminated light located only on the same region as the objects of photography, we developed a novel The Illumination and Imaging of Coaxial System- Illumination Design of Visual Assistance Focusing.
The illumination and imaging of coaxial system is the illumination focus that does synchronize with imaging. This system can improve to exposure and illumination distribution and uniformity of illumination. The thesis is focus on illumination design of visual assistance focusing. The system is composed of six group illumination sides which are arranged the imaging side around and share a set of zoom image lens. The illuminated range is found on match the intended imaging region. The human eye can observe an edge of illumination pattern, real-time determination of the degree of focal imaging side through the illumination system is projected the uniformity distribution source and high sharpness edge pattern.
This thesis show the illumination and imaging of coaxial system is much better fill illumination effects for the macro photography and lack of light environment. The human eye can discern focus level to the different zoom ratio with respect to objects located at different distance.
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