色差計單位公式Colorimeter unit formula
色差儀快速選購指南
單 位
|
公 式
|
Lab
|
L
= 10Y 1/
b=70(Y-100Z/Zn)/L
|
⊿Lab
Δ⊿E
|
⊿L、⊿a、⊿b
⊿E =〔(⊿L)2 + (⊿a)2 + (⊿b)2〕1/2
|
L*a*b
|
L*
= 116(Y/Yn)1/3-16 Y/Yn>0.008856
L* =
903.29(Y/Yn) Y/Yn≦0.008856
a* = 500〔(X/Xn) 1/3 – (Y/Yn) 1/3〕
b* = 200〔(Y/Yn) 1/3 – (Z/Zn) 1/3〕
|
⊿ L*a*b
⊿E*
|
⊿L*、⊿a*、⊿b*(L*a*b)
⊿E* = 〔(⊿L*)2 + (⊿a*)2 + (⊿b*)2〕1/2
|
YI
|
YI
= 〔100(1.28X-1.06Z)/Y〕
|
W
|
W
= 100-〔(100-L)2 + a2 + b2〕1/2
|
WB
|
WB
= Z/1.1823
|
LC∠H
|
L
= 10Y 1/
H = tan -1(b/a)
|
⊿LC∠H
|
⊿L = L2-L1 ⊿C = C2-C1
⊿H =〔(⊿E)2 – (⊿L)2 – (⊿C)2〕1/2
|
*LC∠H
|
L*
= 116(Y/100) 1/3 -16
C*
= (a*2 + b*2) 1/2
H*
= tan -1(b*/a*)
|
⊿*LC∠H
|
⊿L* = L*2 – L*1 ⊿C = C*2 – C*1
⊿H* =〔(⊿E*)2 – (⊿L*)2 – (⊿C*)2〕1/2
|
Yxy
|
x
= X/(X + Y + Z) y = Y/(X + Y + Z)
|
Ylr
|
Ylr=Z/1.18233
|
Ylw
|
Ylw=2-log Ylr
|
Bkr
|
Bkr=Y
|
BLk
|
BLk=2-log Y
|
YL
|
測定鍍金樣品值
|
BK
|
測定其他非鍍金樣品值
|
留言
張貼留言