| 摘要 |
<p>An axially symmetrical molded glass lens has a central longitudinal axis, a lens surface, an annular intermediate area and a mounting flange area. The lens surface is axially symmetric around the central longitudinal axis and is curved. The annular intermediate area is curved and axially symmetric, is formed around the lens surface and has a radius of curvature having a continuously vary modulus that decreases as the radius of curvature approaches the annular intermediate area. The mounting flange area is formed around and connects smoothly to the annular intermediate area. The axially symmetrical molded glass lens has fine precision, a high production rate and a low cost.</p> |
