The diagram below illustrates the geometric optics of the fiberscope created in
ID: 3162486 • Letter: T
Question
The diagram below illustrates the geometric optics of the fiberscope created in this section and the image (e.g. tumor) you viewed at the proximal end of the fiber What effect would increasing only L_1 have on the viewing of the image at Point A? What effect would increasing only L_2 have on the viewing of the image at Point A? What effect would increasing only La have on the viewing of the image at Point A? What effect would increasing only have on the viewing of the image at Point A? If you decide that the image you create is clear but not fully occupying the area of the imaging bundle, what lengths would you change and how would you change them to increase the size of f, the image at Point B? Assuming you correctly create an image at B that fully occupies the area of the imaging how does the image travel to Point A?Explanation / Answer
ans a) on incresinn only L1 the effective object distance ie u increases hence the size of image will decrease.
b)on increasing L2 the effective focus area of light increased on lens hence size of image will increase and image will be more sharper.
c) on increasing L3 the point of Conversion of light rays will come closer hence the image distance v will decrease and also the image will get slightly diminished.
d)on incresing L4 the point of conversion of light rays will go apart hence the image distance v will increase and also the image will get slightly enlarged.
e)L2 should be increased to increase the focused area, L1 should be decreased ,L3 remains the same .
f)by partial refraction of light rays.