| abstract |
The present invention provides an optical film with high contrast and excellent visibility. An optical film has a transparent screen and a transparent reflective layer arranged on one main surface of the transparent screen, wherein, for the transparent screen, relative to the normal direction of the main surface, the light quantity T 15 of the transmitted light at an angle of 15 degrees is equal to The ratio T 15 /T 30 of the light quantity T 30 of transmitted light at an angle of 30 degrees is 2.0 or more, and the light quantity R 15 of reflected light at an angle of 15 degrees is the same as that at an angle of 30 degrees with respect to the normal direction of the main surface. The ratio R 15 /R 30 of the light quantity R 30 of the reflected light is 2.0 or less. |