| 摘要 |
A light intensity distribution converting device is formed by a transparent body having a first curved surface, a second curved surface, and an outer circumferential surface extending between the first and second curved surfaces. One of first and second surfaces has a concave surface configuration and the other has a convex surface configuration. Diverging light is made incident to the first curved surface, for example. The light intensity distribution of light made incident to the body from first curved surface is different from that of light emerging the body from the second curved surface, due to refractions at the first and second curved surfaces. The light intensity distribution converting device can be used as a collimator lens or an objective lens in an optical data storing apparatus.
|
