潛望鏡式三倍變焦鏡頭設計於手機內機構之厚度分析與探討

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/76944

Title:	潛望鏡式三倍變焦鏡頭設計於手機內機構之厚度分析與探討
Authors:	簡姿虹;Jian, Zih-Hong
Contributors:	光電科學與工程學系
Keywords:	光學變焦;潛望鏡式鏡頭設計;直角稜鏡厚度;有效口徑
Date:	2018-07-30
Issue Date:	2018-08-31 11:54:02 (UTC+8)
Publisher:	國立中央大學
Abstract:	本論文設計兩種手機鏡頭，分別為一千三百萬畫素與八百萬畫素三倍變焦潛望鏡式鏡頭。一千三百萬畫素影像感測器為OV13855，畫素大小為1.12 μm，變焦鏡頭焦距為5.909 mm 至 17.327 mm，半視角為9.685到26.567，F-number為3.05 ~ 5.5，像高為2.971 mm。八百萬畫素影像感測器為OV8856，畫素大小1.12 μm，變焦鏡頭焦距為4.514 mm 至 13.442 mm，半視角為9.710到27.000，F-number為3.05 ~ 5.5，像高為2.285 mm。潛望鏡式手機變焦鏡頭設計必須埋入手機內，由於受限手機機構的厚度，當稜鏡厚度或鏡頭之鏡片口徑大小大於手機機構厚度時，則手機鏡頭無法放入手機內，假設稜鏡厚度或鏡片口徑之最大尺寸為鏡頭深度，則鏡頭深度必須小於手機機構厚度，才可置入手機內。機構厚度與鏡頭F-number、入瞳口徑、與成像高度有關，一千三百萬畫素，成像高度為2.971 mm，機構厚度為14 mm。八百萬畫素，鏡頭成像高度由2.971 mm降到2.285 mm，機構厚度減少至10.8 mm；考量選用感測器比例為16：9，機構厚度再減少至 5.811 mm ；在變焦鏡頭之wide angle部分鏡片口徑較大，F-number由3.05增為3.5，機構厚度可再降低至 5.377 mm。最後使用五百萬畫素感測器，成像高度由2.971 mm降到1.923 mm，則機構厚度最後可調至 4.495 mm。如果5.377mm沒辦法放進Iphone裡面，我們希望做到4.5mm以內，最後用500萬素來達到目的，使機構厚度能降到4.495mm。 ;This paper presents two kinds of 3X zoom lens design used for cell phone, including 13 million pixels and 8 million pixels of the cell phone. The 13 million pixel sensor is based on OV13855, the pixel size is 1.12 μm, the effective focal length of the zoom lens is 5.909 mm to 17.327 mm, the half angle is 9.685 degrees to 26.567 degrees, the F-number is 3.05 to 5.5, and the image height is 2.971 mm. The eight-megapixel sensor is using the CMOS sensor of the OV8856, with a pixel size of 1.12 μm. The zoom lens has a effective focal length of 4.514 mm to 13.442 mm, a half-view angle of 9.710 degrees to 27.000 degrees, an F-number of 3.05 to 5.5, and an image height of 2.285 mm. Periscope-type cell phone zoom lens design must be placed into in the phone. Due to the limitation of the thickness of the cell phone, when the thickness of the prism or the aperture size of the lens is larger than the thickness of the cell phone, the cell phone lens cannot be placed in the cell phone. Assuming that the thickness of the prism or the maximum size of the lens aperture is the depth of the lens, the depth of the lens must be less than the thickness of the cell phone before it can be placed in the mobile phone. The thickness of the mechanism is related to the lens F-number, the entrance pupil diameter, and the imaging height, 13 million pixels, the imaging height is 2.971 mm, and the mechanism thickness is 14 mm. With 8 million pixels, the lens imaging height is reduced from 2.971 mm to 2.285 mm, and the thickness of the mechanism is reduced to 10.8 mm. The ratio of the sensor is 16:9, and the thickness of the mechanism is reduced to 5.811 mm. In the wide angle part of the zoom lens The lens has a larger diameter, the F-number is increased from 3.05 to 3.5, and the thickness of the mechanism can be reduced to 5.377 mm. Finally, using a five-million-pixel sensor, the imaging height was reduced from 2.971 mm to 1.923 mm, and the thickness of the mechanism was finally adjusted to 4.495 mm. If 5.377mm can′t be put into the Iphone, we hope to achieve within 4.5mm, and finally use 5 million to achieve the purpose, so that the thickness of the mechanism can be reduced to 4.495mm.
Appears in Collections:	[Graduate Institute of Optics and Photonics] Electronic Thesis & Dissertation

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