发明名称 |
OPTICAL DEVICE WITH LENTICULAR ARRAYS, EDGE-TYPE BACKLIGHT MODULE AND DIRECT-TYPE BACKLIGHT MODULE |
摘要 |
An edge-type backlight module and a direct-type backlight module with a optical device are provided. The optical device comprises an array layer and a second refractive layer. The array layer has a first refractive index (n1) and contains pluralities of lenticular lens disposed on a base surface side by side. The lenticular lens contains a curving structure with a peak, a trough, a curvature radius (R), a width (P) and an altitude (H) between the peak and the trough. The trough is disposed on the base surface. The array layer has a first critical angle (&thetas;1c) relative to the normal of the base surface and satisfies &thetas; 1  c = sin - 1  ( 1 n 1 ) and H = R 1 + K  [ 1 - 1 - ( 1 + K )  ( P 2  R ) 2 ] . The conical constant (K) of the lenticular lens ranges from −2.1 to −1.5. The second refractive layer is adjacent to the array layer and has a second refractive index (n2) and a second critical angle (&thetas;2c) relative to the normal line of the second refractive layer. The first refractive index (n1) is greater than the second refractive index (n2) and &thetas; 2  c = sin - 1  ( n 2 n 1 ) is satisfied. Wherein the lenticular lens, the first critical angle (&thetas;1c) and the second critical angle (&thetas;2c) satisfy the equation of sin - 1  ( 1 n 1 ) ≤ cot - 1  ( H P / 2 ) < sin - 1  ( n 2 n 1 ) . |
申请公布号 |
US2012002440(A1) |
申请公布日期 |
2012.01.05 |
申请号 |
US20100944475 |
申请日期 |
2010.11.11 |
申请人 |
LIN HAO XIANG;CHEN YAN ZUO;CHENG WEN FENG;CHANG JUI HSIANG;ENTIRE TECHNOLOGY CO., LTD. |
发明人 |
LIN HAO XIANG;CHEN YAN ZUO;CHENG WEN FENG;CHANG JUI HSIANG |
分类号 |
F21V7/22;G02B27/12;G02F1/13357 |
主分类号 |
F21V7/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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