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BK7
BK7, high transmission for visible to near infrared applications, the most common optical glass. |
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Chinese K9 517642 |
nd=1.58610 |
vd=64.20 |
nd-ne=0.008050 |
ne=1.51872 |
ve=64.00 |
vd-ve=0.008105 |
Refractive Indices |
Chemical Properties |
Internal Transmittance |
nr |
竹(nm)
|
|
|
Grade
|
竹(nm)
|
而5(mm) |
而10(mm)
|
706.5 |
1.51289 |
1 |
2400 |
0.86 |
0.74 |
nc |
656.3 |
1.51432 |
|
1 |
2200 |
0.930 |
0.86 |
nc |
643.8 |
1.51472 |
|
3 |
2000 |
0.960 |
0.922 |
nHe-Ne |
632.8 |
1.51509 |
|
1 |
1800 |
0.985 |
0.970 |
nD |
589.3 |
1.51673 |
|
|
1600 |
0.990 |
0.980 |
nd |
587.6 |
1.51680 |
|
|
1400 |
0.995 |
0.990 |
ne |
546.1 |
1.51872 |
Thermal Properties
|
1200 |
0.998 |
0.996 |
nF |
486.1 |
1.52237 |
|
565 |
1060 |
0.998 |
0.996 |
nF |
480.0 |
1.52282 |
|
630 |
1000 |
0.999 |
0.997 |
ng |
435.8 |
1.52667 |
|
511 |
950 |
0.999 |
0.997 |
nh |
404.7 |
1.53022 |
|
547 |
900 |
0.999 |
0.998 |
ni |
365.0 |
1.53622 |
|
75 |
850 |
0.999 |
0.998 |
|
|
|
|
82 |
800 |
0.999 |
0.999 |
|
|
|
|
|
700 |
0.999 |
0.999 |
Constants of Dispersion Formala |
Mechanical Properties |
650 |
0.999 |
0.998 |
A0 |
2.2702566 |
|
595 |
600 |
0.999 |
0.999 |
A1 |
-9.1988101℅10-3 |
|
1.00 |
550 |
0.999 |
0.999 |
A2 |
1.1609706℅10-2 |
|
7920 |
500 |
0.999 |
0.998 |
A3 |
-7.6123911℅10-5 |
|
3270 |
480 |
0.999 |
0.998 |
A4 |
2.8558727℅105 |
|
0.211 |
460 |
0.999 |
0.998 |
A5 |
-1.2566486℅10-6 |
|
|
440 |
0.999 |
0.997 |
|
|
420 |
0.999 |
0.998 |
|
|
|
|
|
|
400 |
0.999 |
0.998 |
Relative Partial Dispersions
|
Stree-Optical Coefficient
|
390 |
0.998 |
0.997 |
Pd,c |
0.3080 |
Pd,c |
0.2569 |
|
2.70 |
370 |
0.997 |
0.993 |
Pe,d |
0.2387 |
Pe,d |
0.2371 |
Coloration Code
|
360 |
0.994 |
0.988 |
Pg,F |
0.5342 |
Pg,F |
0.4748 |
|
33/29 |
350 |
0.989 |
0.977 |
|
|
|
|
340 |
0.977 |
0.954 |
|
|
|
|
330 |
0.95 |
0.91 |
Deviation of Relative →Partial Dispersions Pfrom the "Normal Line"
|
|
|
320 |
0.90 |
0.81 |
|
|
310 |
0.80 |
0.63 |
Other Properties |
300 |
0.61 |
0.38 |
→PF,e |
-0.0014 |
|
2.52 |
290 |
0.36 |
0.13 |
→Pg,F |
-0.0035 |
|
|
280 |
0.14 |
0.02 |
|
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