This invention relates to an optical glass designed to be used in following fields: optical/ illumination in the imaging, sensor, microscope, medical technology, digital projection, photo-etching, laser technology, wafer/chip technology, optical communication projection and vehicle industry. The glass comprises the refraction index nd which is not greater than 1.72 and not smaller than 1.60 and the Abbe number vd which is not greater than 45 and not smaller than 32, and comprises excellent short-flint property, excellent chemical resistance, excellent anti-devitrify effect and excellent solarization stability, and comprises following components (counting by mass% based on oxide).