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US 2015/0316690 A1Published application
Optical device
AssigneeAsahi Glass Company, Limited
InventorsMinoru TAMADA, Yusuke Kobayashi, Tomonobu Senoo
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Abstract
There is provided an optical device including a display device, and a transparent substrate that is disposed on a side of a display surface of the display device. When the transparent substrate is evaluated by using a three index values of a resolution index value T, a reflection image diffusiveness index value R, and a sparkle index value S, the following conditions are satisfied: the resolution index value T≦0.2, the reflection image diffusiveness index value R≧0.2, and the sparkle index value S≦60.
Claims7
An optical device comprising:
- a display device;
- and
- a transparent substrate that is disposed on a side of a display surface of the display device,
- wherein, when the transparent substrate is evaluated by using a three index values of a resolution index value T, a reflection image diffusiveness index value R, and a sparkle index value S, the following conditions are satisfied:
- the resolution index value T is less than or equal to 0.2,
- the reflection image diffusiveness index value R is greater than or equal to 0.2, and
- the sparkle index value S is less than or equal to 60.
4 more elements
Dependencies are inferred from the claim text.