遙測三维形貌望遠鏡之研究

Study on the Three-dimensional (3D) Telescope for Remote Measurements

蘇建銘(Jian-Ming Su)

指導教授 ： 邱銘宏

國立虎尾科技大學/電機資訊學院/光電與材料科技研究所/碩士(2011年)

https://doi.org/10.6827/NFU.2011.00154

摘要

本研究提出一種全新的三維(3D: three dimensional)形貌遙測系統架構，本方法利用平行四邊形稜鏡搭配可微調式商用望遠鏡，並以CCD擷取影像技術可觀察並換算遠距離物體之高度。當一距離夠遠之物體所反射出的光線可將視為一平行光入射平行四邊形稜鏡，而物體與其之背景有一高度差距故其光線會有一收斂或發散現象進入平行四邊形稜鏡，利用光強與其光線角度變化及高度差有一線性關係，可以得知目標物體的高度與其3D形貌。本系統架構簡單，成本低廉，且具有非接觸非破壞性，可遠距離測量目標物體，應用於危險區域無法近距離觀測之地區等等。

關鍵字

3D形貌 ； 望遠鏡 ； 臨界角

並列摘要

In this paper, we proposed a technique to realize the three-dimensional (3D) telescope based on the critical angle method and the use of a CCD camera. A general optical telescope is just only used to observe two-dimensional image of a far object. Because the intensity ratio is proportional to the depth of the object in the internal reflection method, we used a commercial telescope combined with a parallelogram prism and a CCD to achieve a pattern which is the intensity ratio of images caught by the CCD at two incident angles of the prism, and then the object depth can be obtained. Therefore, the 3D topography is also obtained.
The 3D telescope is very compact and useful in sufficient light condition. None of light sources is necessary unless the object is under the status of unsufficient illuminance. Therefore, it is more convenient for users to apply the technique in remote measurements.

並列關鍵字

three-dimensional, telescope ； remote measurement ； critical angle

參考文獻

[1] http://en.wikipedia.org/wiki/Reflecting_telescope#Newtonian。

[2] http://en.wikipedia.org/wiki/Reflecting_telescope#The_Cassegrain_design_and_its_variations。

[3] http://en.wikipedia.org/wiki/Refracting_telescope#Galileo.27s_telescope。

[4] http://en.wikipedia.org/wiki/Refracting_telescope#Keplerian_Telescope。

[5] http://en.wikipedia.org/wiki/Catadioptric_system#The_Schmidt_corrector_plate。