| 摘要 |
There is provided an optical element having: a laminate including a reflective type polarizer for separating incident light into polarized light components through reflection and transmission, and a dichromatic polarizer, wherein a variation of hue between two points calculated by the expression: {square root}{(x2-x1)2+(y2-y1)2} is not larger than 0.06 when x1 and y1 express a hue at a point with a predetermined elevation angle and any azimuth angle, and x2 and y2 express a hue at another point with the same elevation angle and a changed azimuth angle in the case where transmitted light is obliquely viewed in the condition that the laminate is disposed on a planar light source so that the reflective type polarizer is located in an inner side. An illuminator having a planar light source including a reflection layer on its rear surface side, and an optical element defined above and disposed on the front surface side of the planar light source so that the reflective type polarizer of the optical element is located in an inner side. A liquid-crystal display device having an illuminator defined above, and a liquid-crystal cell disposed on a light exit side of the illuminator.
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