| 摘要 |
An environment-friendly near infrared light absorption glass with thin glass, superior chemical stability and visible light transmittance, and a near infrared light absorption element and a light filter formed by the glass. When the thickness of the near infrared light absorption glass is 0.3 mm, the transmittance at a wavelength of 400 nm is greater than 83%, and the transmittance at a wavelength of 500 nm is greater than 85%. The near infrared light absorption glass contains P5+, Al3+, R+, Tau2+, Zetan2+ and Cu2+ that are represented by positive ions. The R+ represents total amount of Li+, Na+ and K+. The Tau2+ represents total amount of Mg2+, Ca2+, Sr2+ and Ba2+. The content of Cu2+ is 0.1%-4% of the weight of positive ions, and the content of Zn2+ is 1%-15% of the weight of positive ions. O2- and F- represented by negative ions are contained. |
