摘要 |
<p>Provided is an optical glass which exhibits excellent weather resistance, chemical durability, and transmittance with respect to the visible range and the near ultraviolet range, and which is capable of easily achieving a low glass transition point without including components unfavourable to the environment. This optical glass is characterized by including, in mol%, 43.5-80% of SnO, and a total of 0.1-29.9% of P2O5, B2O3, and SiO2. The optical glass is further characterized by substantially not including lead components and arsenic components. It is preferable that the P2O5 content be 0.1-29.5%.</p> |