| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide means for reducing the influence of blue light on eyes. <P>SOLUTION: There is provided a spectacle lens having a multi-layer vapor deposition film directly or indirectly on a lens base material. The multi-layer vapor deposition film includes, from the lens base material side, a first layer which is formed by vapor deposition using a vapor deposition source mainly composed of SiO<SB POS="POST">2</SB>and has a film thickness of 25 to 32 nm, a second layer which is formed by vapor deposition using a vapor deposition source mainly composed of Ta<SB POS="POST">2</SB>O<SB POS="POST">5</SB>or ZrO<SB POS="POST">2</SB>and has a film thickness of 7 to 9 nm, a third layer which is formed by vapor deposition using a vapor deposition source mainly composed of SiO<SB POS="POST">2</SB>and has a film thickness of 360 to 390 nm, a fourth layer which is formed by vapor deposition using a vapor deposition source mainly composed of Ta<SB POS="POST">2</SB>O<SB POS="POST">5</SB>or ZrO<SB POS="POST">2</SB>and has a film thickness of 10 to 13 nm, a fifth layer which is formed by vapor deposition using a vapor deposition source mainly composed of SiO<SB POS="POST">2</SB>and has a film thickness of 34 to 38 nm, a sixth layer which is formed by vapor deposition using a vapor deposition source mainly composed of Ta<SB POS="POST">2</SB>O<SB POS="POST">5</SB>or ZrO<SB POS="POST">2</SB>and has a film thickness of 42 to 45 nm and a seventh layer which is formed by vapor deposition using a vapor deposition source mainly composed of SiO<SB POS="POST">2</SB>and has a film thickness of 110 to 115 nm, in this order, and has a property of reflecting incident light having a wavelength region of 420 to 450 nm on the surface on the side having the multi-layer vapor deposition film. <P>COPYRIGHT: (C)2013,JPO&INPIT |
