Optical member, plastic lens for eyeglasses, and method for manufacturing the same

摘要

An optical member includes a substoichiometric titanium oxide film formed by depositing substoichiometric titanium oxides in a vacuum chamber into which an oxygen gas for adjusting a vacuum is introduced. In the optical member, the film forming pressure p (Pa) in the vacuum chamber and the optical film thickness (a refractive index of 2.50, a wavelength of 500 nm) of the substoichiometric titanium oxide film have relations of (1) p≧0.005, (2) optical film thickness ≦0.500λ, and (3) optical film thickness ≧(0.001exp(905.73p)−0.050)λ where exp is an exponential function with e as the base of the natural logarithm.

主权项

1. An optical member, comprising
a substoichiometric titanium oxide film formed by depositing a substoichiometric titanium oxide in a vacuum chamber into which an oxygen gas for adjusting a vacuum is introduced, wherein a film forming pressure p (Pa) in the vacuum chamber and an optical film thickness (a refractive index of 2.50, a wavelength of 500 nm) of the substoichiometric titanium oxide film have relations:
0.0067≧p≧0.005,  (1)optical film thickness≦0.450λ, and  (2)optical film thickness≧(0.001exp(905.73p)−0.050)λ  (3)where exp is an exponential function with e as a base of natural logarithm.