| OHARA | PBL1Y |
548457 551455 |
||||||
| Refractive Index |  |
1.54814 | Abbe Number |  |
45.7 | Dispersion |  |
0.01199 |
| 1.548141 | 45.73 | 0.011986 | ||||||
 |
1.550989 |  |
45.45 |  |
0.012123 | |||
Refractive Indices |
||
 |
||
 |
2.32542 | 1.51892 |
 |
1.97009 | 1.52371 |
 |
1.52958 | 1.52892 |
 |
1.12864 | 1.53374 |
 |
1.01398 | 1.53542 |
 |
0.85211 | 1.53845 |
 |
0.76819 | 1.54058 |
 |
0.70652 | 1.54256 |
 |
0.65627 | 1.54456 |
 |
0.64385 | 1.54513 |
 |
0.6328 | 1.54566 |
 |
0.58929 | 1.54804 |
 |
0.58756 | 1.54814 |
 |
0.54607 | 1.55099 |
 |
0.48613 | 1.55655 |
 |
0.47999 | 1.55725 |
 |
0.44157 | 1.56242 |
 |
0.435835 | 1.56333 |
 |
0.404656 | 1.56911 |
 |
0.365015 | 1.57931 |
 |
0.334148 | 1.59092 |
 |
0.326106 | 1.59476 |
Thermal Properties |
||
| Strain Point (°C) |
StP |
361 |
| Annealing Point (°C) |
AP |
396 |
| Transformation Temperature (°C) |
Tg |
406 |
| Yield Point (°C) |
At |
453 |
| Softening Point (°C) |
SP |
567 |
| Expansion Coefficient   |
-30~+70°C |
93 |
+100~+300°C |
106 |
|
Thermal Conductivity |
k |
0.951 |
Mechanical Properties |
||
Young's Modulus |
E |
613 |
| Rigidity Modulus |
G |
252 |
| Poisson's Ratio |  |
0.217 |
| Knoop Hardness | Hk |
420 [4] |
| Abrasion | Aa |
124 |
Photoelastic Constant |
 |
2.94 |
Partial Dispersions |
|
 |
0.009141 |
 |
0.003985 |
 |
0.003576 |
 |
0.006424 |
 |
0.015189 |
 |
0.006779 |
 |
0.005775 |
 |
0.015976 |
 |
0.009705 |
 |
0.005860 |
 |
0.006263 |
 |
0.022054 |
Deviation of Relative Partial Dispersions |
|
 |
0.0014 |
 |
0.0012 |
 |
-0.0025 |
 |
-0.0019 |
 |
-0.0092 |
Constants of Dispersion Formula |
||
326 ~ 1129 nm |
||
 |
1.24772961 | |
 |
1.01954909 |  |
 |
3.50479619 | |
 |
9.26606623 |  |
 |
4.51754311 |  |
 |
4.50186705 |  |
1129 ~ 2325 nm |
||
|
1.23355664 | |
|
1.16590349 | |
|
1.00089638 | |
|
8.90666335 | |
|
4.34657202 | |
|
1.20857441 |  |
Chemical Properties |
||
| Water Resistance (P) | RW(P) |
2 |
| Acid Resistance (P) | RA(P) |
1 |
| Weathering Resistance (S) | W(S) |
2~2 |
| Acid Resistance (S) | SR |
1.0 |
| Phosphate Resistance | PR |
1.1 |
| P = Powder Group, S = Surface Group | ||
Other Properties |
|||
| Bubble Quality Group | B |
1 |
|
| Specific Gravity | d |
2.95 |
|
| Coloring |  |
32 |
|
 |
30 |
||
Relative Partial Dispersions |
|
 |
0.7626 |
 |
0.3325 |
 |
0.2983 |
 |
0.5360 |
 |
1.2672 |
 |
0.5656 |
 |
0.4818 |
 |
1.3329 |
 |
0.8005 |
 |
0.4834 |
 |
0.5166 |
 |
1.8192 |
Internal Transmittance |
||
 |
 |
 |
280 |
||
290 |
||
300 |
||
310 |
0.290 |
0.040 |
320 |
0.800 |
0.570 |
330 |
0.954 |
0.880 |
340 |
0.988 |
0.970 |
350 |
0.995 |
0.988 |
360 |
0.997 |
0.993 |
365 |
0.997 |
0.994 |
370 |
0.998 |
0.995 |
380 |
0.998 |
0.996 |
390 |
0.999 |
0.997 |
400 |
0.999 |
0.998 |
420 |
0.999 |
0.998 |
440 |
0.999 |
0.998 |
460 |
0.999 |
0.998 |
480 |
0.999 |
0.998 |
500 |
0.999 |
0.999 |
550 |
0.999 |
0.999 |
600 |
0.999 |
0.999 |
650 |
0.999 |
0.999 |
700 |
0.999 |
0.999 |
800 |
0.999 |
0.999 |
900 |
0.999 |
0.999 |
1000 |
0.999 |
0.999 |
1200 |
0.999 |
0.999 |
1400 |
0.998 |
0.996 |
1600 |
0.996 |
0.991 |
1800 |
0.983 |
0.958 |
2000 |
0.960 |
0.903 |
2200 |
0.919 |
0.810 |
2400 |
0.880 |
0.730 |
Temperature Coefficients of Refractive Index |
||||||||
Range of Temperature (°C) |
dn / dt relative  |
|||||||
t |
C' |
He-Ne |
D |
e |
F' |
g |
i |
|
| -40 ~ -20 | 1.2 |
1.6 |
1.7 |
1.8 |
2.0 |
2.5 |
3.0 |
4.5 |
| -20 ~ 0 | 1.2 |
1.7 |
1.7 |
1.9 |
2.1 |
2.6 |
3.1 |
4.7 |
| 0 ~ 20 | 1.2 |
1.7 |
1.8 |
1.9 |
2.2 |
2.7 |
3.2 |
4.9 |
| 20 ~ 40 | 1.3 |
1.8 |
1.8 |
2.0 |
2.2 |
2.8 |
3.3 |
5.0 |
| 40 ~ 60 | 1.3 |
1.8 |
1.9 |
2.1 |
2.3 |
2.9 |
3.4 |
5.2 |
| 60 ~ 80 | 1.3 |
1.9 |
1.9 |
2.1 |
2.4 |
2.9 |
3.5 |
5.4 |