发明名称 |
Optical lens and method of manufacturing the same |
摘要 |
In an optical lens including a lens portion having a convex or concave lens surface on each side, each lens surface of the lens portion has a convex portion of a small projection centered on the optical axis thereof, and the convex portion has the height which is approximately less than four times the used wavelength so as not to have an effect on an optical characteristic of the lens portion.
|
申请公布号 |
US7499220(B2) |
申请公布日期 |
2009.03.03 |
申请号 |
US20060480712 |
申请日期 |
2006.07.03 |
申请人 |
ALPS ELECTRIC CO., LTD. |
发明人 |
TOGASHI MASATOSHI;MURATA HISASHI |
分类号 |
G02B3/00;B29D11/00;G02B27/10 |
主分类号 |
G02B3/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|