| OHARA | PBL6Y |
532490 534487 |
||||||
| Refractive Index |  |
1.53172 | Abbe Number |  |
49.0 | Dispersion |  |
0.01086 |
| 1.531717 | 48.95 | 0.010862 | ||||||
 |
1.534301 |  |
48.67 |  |
0.010977 | |||
Refractive Indices |
||
 |
||
 |
2.32542 | 1.50343 |
 |
1.97009 | 1.50833 |
 |
1.52958 | 1.51361 |
 |
1.12864 | 1.51837 |
 |
1.01398 | 1.51998 |
 |
0.85211 | 1.52282 |
 |
0.76819 | 1.52480 |
 |
0.70652 | 1.52663 |
 |
0.65627 | 1.52846 |
 |
0.64385 | 1.52897 |
 |
0.6328 | 1.52946 |
 |
0.58929 | 1.53162 |
 |
0.58756 | 1.53172 |
 |
0.54607 | 1.53430 |
 |
0.48613 | 1.53932 |
 |
0.47999 | 1.53995 |
 |
0.44157 | 1.54459 |
 |
0.435835 | 1.54540 |
 |
0.404656 | 1.55056 |
 |
0.365015 | 1.55959 |
 |
0.334148 | 1.56978 |
 |
0.326106 | 1.57312 |
Thermal Properties |
||
| Strain Point (°C) |
StP |
398 |
| Annealing Point (°C) |
AP |
436 |
| Transformation Temperature (°C) |
Tg |
453 |
| Yield Point (°C) |
At |
501 |
| Softening Point (°C) |
SP |
637 |
| Expansion Coefficient   |
-30~+70°C |
83 |
+100~+300°C |
90 |
|
Thermal Conductivity |
k |
1.016 |
Mechanical Properties |
||
Young's Modulus |
E |
605 |
| Rigidity Modulus |
G |
251 |
| Poisson's Ratio |  |
0.205 |
| Knoop Hardness | Hk |
450 [5] |
| Abrasion | Aa |
113 |
Photoelastic Constant |
 |
3.07 |
Partial Dispersions |
|
 |
0.008482 |
 |
0.003660 |
 |
0.003258 |
 |
0.005842 |
 |
0.136860 |
 |
0.006082 |
 |
0.005153 |
 |
0.014190 |
 |
0.008998 |
 |
0.005326 |
 |
0.005651 |
 |
0.019641 |
Deviation of Relative Partial Dispersions |
|
 |
0.0046 |
 |
0.0018 |
 |
-0.0031 |
 |
-0.0024 |
 |
-0.0087 |
Constants of Dispersion Formula |
||
326 ~ 1129 nm |
||
 |
1.22310794 | |
 |
8.11217929 |  |
 |
3.21400939 |  |
 |
8.97805333 |  |
 |
4.45756957 | |
 |
4.05962247 |  |
1129 ~ 2325 nm |
||
|
1.20208094 | |
|
1.02467101 | |
|
1.01797415 | |
|
8.49251346 | |
|
4.19306973 | |
|
1.22687120 |  |
Chemical Properties |
||
| Water Resistance (P) | RW(P) |
2 |
| Acid Resistance (P) | RA(P) |
1 |
| Weathering Resistance (S) | W(S) |
1 |
| Acid Resistance (S) | SR |
1.0 |
| Phosphate Resistance | PR |
1.0 |
| P = Powder Group, S = Surface Group | ||
Other Properties |
|||
| Bubble Quality Group | B |
2 |
|
| Specific Gravity | d |
2.79 |
|
| Coloring |  |
32 |
|
 |
30 |
||
Relative Partial Dispersions |
|
 |
0.7809 |
 |
0.3370 |
 |
0.2999 |
 |
0.5378 |
 |
1.2600 |
 |
0.5599 |
 |
0.4744 |
 |
1.3064 |
 |
0.8197 |
 |
0.4852 |
 |
0.5148 |
 |
1.7893 |
Internal Transmittance |
||
 |
 |
 |
280 |
||
290 |
||
300 |
||
310 |
0.330 |
0.060 |
320 |
0.790 |
0.550 |
330 |
0.947 |
0.870 |
340 |
0.985 |
0.963 |
350 |
0.994 |
0.986 |
360 |
0.997 |
0.993 |
365 |
0.998 |
0.994 |
370 |
0.998 |
0.995 |
380 |
0.998 |
0.996 |
390 |
0.998 |
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 |
0.998 |
550 |
0.999 |
0.998 |
600 |
0.999 |
0.999 |
650 |
0.999 |
0.998 |
700 |
0.999 |
0.999 |
800 |
0.999 |
0.999 |
900 |
0.999 |
0.998 |
1000 |
0.998 |
0.996 |
1200 |
0.997 |
0.993 |
1400 |
0.996 |
0.990 |
1600 |
0.993 |
0.983 |
1800 |
0.973 |
0.934 |
2000 |
0.933 |
0.840 |
2200 |
0.860 |
0.690 |
2400 |
0.810 |
0.590 |
Temperature Coefficients of Refractive Index |
||||||||
Range of Temperature (°C) |
dn / dt relative  |
|||||||
t |
C' |
He-Ne |
D |
e |
F' |
g |
i |
|
| -40 ~ -20 | 1.9 |
2.3 |
2.3 |
2.4 |
2.6 |
3.0 |
3.4 |
4.7 |
| -20 ~ 0 | 1.9 |
2.4 |
2.4 |
2.5 |
2.7 |
3.1 |
3.6 |
4.9 |
| 0 ~ 20 | 2.0 |
2.5 |
2.5 |
2.6 |
2.8 |
3.3 |
3.7 |
5.1 |
| 20 ~ 40 | 2.1 |
2.6 |
2.6 |
2.7 |
2.9 |
3.4 |
3.9 |
5.3 |
| 40 ~ 60 | 2.1 |
2.7 |
2.7 |
2.9 |
3.1 |
3.5 |
4.0 |
5.6 |
| 60 ~ 80 | 2.2 |
2.8 |
2.8 |
3.0 |
3.2 |
3.7 |
4.2 |
5.8 |