To focus light along a straight line. Useful for looking at full paths of 'rays' on paper, such as pencils of light emerging from the slits of a comb illuminated by a small lamp.
Made of optically true glass with polished faces and ground edges. Surfaces follow the sides of cylidners (s). Beveled edges.
Dimensions: (hxw), 50mmx45mm
Power 7D (focal length-143mm)
Bi-convex | 3318-01 |
Bi-concave | 3318-02 |
Plano-concave | 3318-04 |
Plano-convex | 3318-03 |
Power 14D (focal length-72mm)
Bi-convex | 3318-11 |
Bi-concave | 3318-12 |
Plano-concave | 3318-13 |
Plano-convex | 3318-14 |