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| Birefringence Compensation Film-NIBCOM |
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| Combination of polarizing film and birefringence compensation film. |
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Outline(Ex.) |
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| The polarizing film and the birefrimgence compensation film are combined into one unit. |
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Structures |
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| ■ Application example for STN-LCD(Transparent type) |
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| ■ Wavelength dispersion characterristics |
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| ■ Wide viewing angle retardation film |
| By controlling the refrac-tive index to3Ddirections,retardation changes due to viewing abgles can be controlled. |
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| ■ Applivaton viewing angle control of polarizing film by retardation folm |
| Retardation film improves the polarizer's performance beyond the axis. |
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| < Comparison of the contrast between "polarizing film" and "polarizing film laminated with retardation film" > |
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| Without Retardation Film |
With Retardation Film |
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| 【Measurement method(using retardation film)】 |
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| 【Comparison of the transmittance between "polarizing film" and "polarizing film laminated with retardation film"】 |
| <Transmittance under axis crossed(at 550nm)> |
Viewing angle
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G1220DUN |
G1220DUN+NRF |
| θ＝0 |
0.01% |
0.01% |
| θ＝60° |
3.3% |
0.5% |
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| Directional angle Φ=45° Viewing angle θ=60° |
  About safe handling of an optical material
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