| 申请日期 | 2025-06-26 | 申请号 | JP2004015132 |
| 公开（公告）号 | JP2005206425A | 公开（公告）日 | 2005-08-04 |
| 公开国别 | JP | 申请人省市代码 | 全国 |
| 申请人 | OMG CO LTD | ||
| 简介 | PROBLEM TO BE SOLVED : To provide a borate glass, which, even in the case of irradiation with a light of a wavelength of 350 to 450 nm, is suppressed in the reduction of light transmittance in this wavelength range, and a lens using this borate glass.SOLUTION : The borate glass is made to contain one or more kinds of rare earth elements. As the rare earth elements, it is preferable to select lanthanum, preferably as a lanthanum oxide. This glass can be used for the lens. | ||
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