| 摘要 |
<p>Disclosed is an optical glass which comprises a substance A and a substance B in 100 wt% of a base glass composition comprising at least 2-20 wt% of SiO2, 5-45 wt% of B2O3 and 10-29 wt% of La2O3, or 100 wt% of a base glass composition comprising at least 2-20 wt% of SiO2, 5-45 wt% of B2O3, 10-29 wt% of La2O3, 0-45 wt% of RO [R = Zn, Sr, Ba], 0-10 wt% of Ln2O3 [Ln = Y, Gd] and 1-20 wt% of ZrO2+Nb2O5+TiO2+Ta2O5. The substance (A) can emit a light having a wavelength of ?2 when irradiated with a light having a wavelength of ?1, and the substance B can emit a light having a wavelength of ?3 when irradiated with a light having a wavelength of ?1, wherein the wavelengths ?1, ?2 and ?3 have a relationship represented by the following formula: ?1<?2<?3.</p> |
