| Summary: | 碩士 === 逢甲大學 === 機械與電腦輔助工程學系 === 107 === Effect of conical lenses geometric parameters on imaging is investigated in this work. Software TracePro is used to analyze path and trajectory of light. From the results, it is found that the bottom angle α has significant effect on imaging of conical lenses. Asα increasing from 0°, the images on screen would change from a solid circle for α being 0° to ring of light. The radii of ring of light will increase as α increasing. But the illuminance of ring of light will decrease as α increasing due to some light scattering. As α being 41.19°, almost all the light be reflected backward the conical lenses or scattered. Only the light going through the axis of conical lens will image a light point on screen. As α being larger than 43.21°, there are no light images on the screen. However, as α being larger than 53°, images on the screen will also become ring of light. The radii of ring of light would decrease as α increasing. When α is 90°, the image on the screen will be solid circle. If the light is inclined to the axis of conical lenses, the images on the screen will be arcs of circle.
|
|---|
