JML Optical

JML Optical Industries, LLC

The Complete Source for Custom Precision Optics

about banner

Optical Glass Properties

The table below contains specifications for the various glass types we use for our catalog products (e.g. index, abbe constant, knoop hardness, etc.)

All content on this web-site supersedes content in JML catalogs (both CD and printed hard copy versions).
JML reserves the right, at our discretion, to substitute equivalent performing materials in any of our catalog products.

Click here to jump to the table.  Once at the table, many of the glass types have links to their transmission graph.





























Click on the material name to see the corresponding transmission graph.

 

nd

 (Index for Yellow Helium Line)

nF

(Index for Blue Hydrogen F Line)

nC

(Index for Red Hydrogen C Line)

vd

(Abbe Constant)		 Coefficient of Thermal Expansion -30°C to 70°C Coefficient of Thermal Expansion +20°C to 300°C Young's Modulus Poisson's Ratio Density Knoop Hardness Resistance to Weathering Resistance to Staining
Acrylic 1.491 1.496 1.488 61.4 64.8 ppm°C — 3.2X104kg/cm2  .450 1.19 g/cm3 M-95* High High
BaF51      1.65224 1.66244 1.64792 44.93 8.4x10-6/°C 9.4x106/°C 89x103N/mm2 .266 3.42 g/cm3 590 Moderate Very High
BaF9 1.64328 1.65268 1.63927 47.96 6.5x10-6/°C 7.5x10-6/°C 78x103N/mm2 .269 3.85 g/cm3 540 High High
B270
 1.5230 1.5292 1.5202 58.5 — 9.5X10-6/°C 71.5X103N/mm2 — 2.55 g/cm3 542 Moderate High
BaK1 1.5725 1.5794 1.5694 57.55 7.6X10-6/°C 8.7X10-6/°C 74X103N/mm2 .253 3.19 g/cm3 460 High Very High
BaK2 1.5399 1.5462 1.5372 59.71 8.0X10-6/°C 9.1X10-6/°C 71X103N/mm2 .233 2.86 g/cm3 450 High Very High
BaK4 1.56883 1.5759 1.56576 56.13 7.0X10-6/°C 8.2X10-6/°C 77X103N/mm2 .241 3.1 g/cm3 550 High Very High
 

nd

 (Index for Yellow Helium Line)

nF

(Index for Blue Hydrogen F Line)

nC

(Index for Red Hydrogen C Line)

vd

(Abbe Constant)		 Coefficient of Thermal Expansion -30°C to 70°C Coefficient of Thermal Expansion +20°C to 300°C Young's Modulus Poisson's Ratio Density Knoop Hardness Resistance to Weathering Resistance to Staining
BaLKN3 1.51849 1.52447 1.51586 60.26 7.9X10-6/°C 9X10-6/°C 71X103N/mm2 .214 2.61 g/cm3 550 High Very High
N-BK7 1.5168 1.5224 1.5143 64.17 7.1X10-6/°C 8.3X10-6/°C 81X103N/mm2 .208 2.51 g/cm3 520 High Very High
CaF2 — — — — 24X10-6/°C 24X10-6/°C — — 3.18 g/cm3 158 Moderate —
FK3 1.46450 1.46939 1.46232 65.77 8.2x10-6/°C 9.4x10-6/°C 46x103N/mm2 .243 2.27 g/cm3 380 High Moderate
F2 1.6200 1.6320 1.6150 36.11 8.2X10-6/°C 9.3X10-6/°C 58X103N/mm2 .225 3.61 g/cm3 370 Very High Very High
F3 1.61293 1.62461 1.60806 37.04 8.0X10-6/°C 9.1X10-6/°C 58X103N/mm2 .224 3.55 g/cm3 440 Very High Very High
 

nd

 (Index for Yellow Helium Line)

nF

(Index for Blue Hydrogen F Line)

nC

(Index for Red Hydrogen C Line)

vd

(Abbe Constant)		 Coefficient of Thermal Expansion -30°C to 70°C Coefficient of Thermal Expansion +20°C to 300°C Young's Modulus Poisson's Ratio Density Knoop Hardness Resistance to Weathering Resistance to Staining
F4 1.6165 1.6284 1.6116 36.63 8.3X10-6/°C 9.2X10-6/°C 55X103N/mm2 .225 3.58 g/cm3 360 Very High Very High
F6 1.63636 1.64909 1.63108 35.34 8.5x10-6/°C 9.4x10-6/°C 57x103N/mm2.224 3.76 g/cm3 410 High Very High
Fused Silica 1.458 1.463 1.456 67.6 5.5X10-7/°C 5.5X10-7/°C 7.34X105kg/cm2 .170 2.20 g/cm3 600 Extremely High Extremely High
GaAs— — — — — — — —5.3g/cm3  750 Moderate —
Germanium — — — — 5.9X10-6/°C 5.9X10-6/°C 10.2x106n/mm2 — 5.327 g/cm3 692 High —
K5 1.5224 1.5285 1.5198 59.79 8.2X10-6/°C 9.6X10-6/°C 7060 KgW/mm2 .219 2.59 g/cm3 450-549 Moderate Very High
K7 1.51112 1.517 1.50854 60.41 8.4X10-6/°C 9.7X10-6/°C 69X103N/mm2 .214 2.53 g/cm3 520 Moderate Very High
 

nd

 (Index for Yellow Helium Line)

nF

(Index for Blue Hydrogen F Line)

nC

(Index for Red Hydrogen C Line)

vd

(Abbe Constant)		 Coefficient of Thermal Expansion -30°C to 70°C Coefficient of Thermal Expansion +20°C to 300°C Young's Modulus Poisson's Ratio Density Knoop Hardness Resistance to Weathering Resistance to Staining
LaSFN9 1.850 1.8689 1.8425 32.17 7.4X10-6/°C 8.4X10-6/°C 109X103N/mm2 .286 4.44 g/cm3 510 High Very High
LAH71 1.8502 1.8689 1.8425 32.28 7.4X10-6/°C 8.3X10-6/°C 5990 KgW/mm2 .286 4.81 g/cm3 450-549 Very High Moderate
N-F2
 1.62005 1.63208 1.61506 36.43 7.8x10-6/°C 9.1x10-6/°C 82x103N/mm2.2282.65 g/cm3 600 Very High
Extremely High
N-SF4
1.75513
 1.77477 1.74719 27.38 9.5x10-6/°C 10.9x10-6/°C 90x103N/mm2.2563.15 g/cm3 520 Very High
Extremely High
N-SK5 1.58913 1.59581 1.58619 61.275.5x10-6/°C 6.5x10-6/°C 84x103N/mm2.2563.3 g/cm3 590 Moderate Very High
Pyrex® (Tempax®) 1.473 1.478 1.471 65.7 3.25X10-6/°C 3.25X10-6/°C 6.1X105kg/cm2 .200 2.23 g/cm3 420 Very High Very High
Sapphire 1.7682 1.7756 1.7649 72.2 7.7X10-6/°C 7.7X10-6/°C 370X103N/mm2 .290 3.98 g/cm3 1525-2000 Very High Very High
 

nd

 (Index for Yellow Helium Line)		 

nF

(Index for Blue Hydrogen F Line)		 

nC

(Index for Red Hydrogen C Line)


 

vd

(Abbe Constant)		Coefficient of Thermal Expansion -30°C to 70°C 
Coefficient of Thermal Expansion +20°C to 300°C


Young's Modulus		 



Poisson's Ratio		 



Density


Knoop Hardness


Resistance to Weathering		 


Resistance to Staining
S-Bal111.572501.579401.5694957.86.6x10-6/°C8x10-6/°C81.9x103N/mm2.2373.02 g/cm3590HighHigh
S-Bal12
 1.53996 1.54627 1.53719 59.5 8.6x10-6/°C 10.2x10-6/°C 71.0x103N/mm2.1612.75 g/cm3520Very High
Very High
S-Bal14
 1.56883
 1.57587 1.56577 56.3 8.0x10-6/°C 9.3x10-6/°C 81.1x103N/mm2 .2402.89 g/cm3570HighVery High
S-Bal35 1.58913 1.59582 1.58619 61.2 5.7x10-6/°C 6.7x10-6/°C 83.2x103N/mm2 .2503.31 g/cm3590ModerateVery High
S-Bal41 1.56384 1.57029 1.56100 60.7 7.5x10-6/°C 9.1x10-6/°C 89x103N/mm2 .2422.78 g/cm3600HighVery High
S-BSL7 1.51633 1.52191 1.51386 64.1 7.2x10-6/°C 8.6x10-6/°C 80x103N/mm2 .2052.52 g/cm3570HighVery High
S-BSM2
 1.60738 1.61483 1.60414 56.8 6.5x10-6/°C 7.4x10-6/°C 78x103N/mm2 .2643.53 g/cm3560HighVery High
 

nd

 (Index for Yellow Helium Line)		 

nF

(Index for Blue Hydrogen F Line))
 

nC

(Index for Red Hydrogen C Line)


vd

(Abbe Constant)		 
Coefficient of Thermal Expansion -30°C to 70°C		 
Coefficient of Thermal Expansion +20°C to 300°C


 Young's Modulus		 



Poisson's Ratio


 Density		 



Knoop Hardness		 


Resistance to Weathering		 


Resistance to Staining
S-BSM16 1.62041 1.62757 1.61728 60.3 6.7x10-6/°C 7.6x10-6/°C 87.8x103N/mm2 .2623.59 g/cm3570ModerateLow
S-BSM22
 1.62230 1.63047 1.61877 53.2 6.6x10-6/°C 7.6x10-6/°C 87.4x103N/mm2 .2653.24 g/cm3580HighModerate
SF1 1.71736 1.73462 1.71031 29.51 8.1X10-6/°C 8.8X10-6/°C 56X103N/mm2 .232 4.46 g/cm3 390 High High
SF2 1.6476 1.6612 1.6421 33.85 8.4X10-6/°C 9.2X10-6/°C 55X103N/mm2 .231 3.86 g/cm3 350 Very High Very High
SF5 1.6727 1.6875 1.66661 32.21 8.2X10-6/°C 9X10-6/°C 56X103N/mm2 .233 4.07 g/cm3 410 Very High High
SF8 1.6889 1.7046 1.6825 31.18 8.2X10-6/°C 9.1X10-6/°C 56X103N/mm2 .233 4.22 g/cm3 340 Very High Very High
SF10 1.72825 1.74648 1.72085 28.41 7.5X10-6/°C 8.4X10-6/°C 64X103N/mm2 .232 4.28 g/cm3 430 Very High Very High
SF11 1.7847 1.8064 1.7759 25.76 6.1X10-6/°C 6.9X10-6/°C 66X103N/mm2 .237 4.74 g/cm3 380 Very High Very High
 

nd

 (Index for Yellow Helium Line)

nF

(Index for Blue Hydrogen F Line)

nC

(Index for Red Hydrogen C Line)

vd

(Abbe Constant)		 Coefficient of Thermal Expansion -30°C to 70°C Coefficient of Thermal Expansion +20°C to 300°C Young's Modulus Poisson's Ratio Density Knoop Hardness Resistance to Weathering Resistance to Staining
SF12 1.64831 1.66187 1.64271 33.84 7.8X10-6/°C 8.5X10-6/°C 60X103N/mm2 .228 3.74 g/cm3 430 Very High Very High
SF15 1.69895 1.71546 1.69221 30.07 7.9X10-6/°C 8.9X10-6/°C 60X103N/mm2 .235 4.06 g/cm3 420 Very High Very High
SF18 1.7215 1.7390 1.7143 29.24 8.3X10-6/°C 9.4X10-6/°C 5570 KgW/mm2 .233 4.50 g/cm3 350-449 High High
SF19 1.6668 1.6811 1.6609 33.01 7.7X10-6/°C 8.6X10-6/°C 58X103N/mm2 .228 4.02 g/cm3 360 Very High Very High
SF56 1.7847 1.8061 1.7760 26.08 7.9X10-6/°C 8.8X10-6/°C 58X103N/mm2 .242 4.92 g/cm3 330 Very High Very High
S-FSL5 1.48749 1.49228 1.48534 70.2 9.0x10-6/°C 9.5x10-6/°C 62.3x103N/mm2 .2272.46 g/cm3520High
Moderate
 

nd

 (Index for Yellow Helium Line)

nF

(Index for Blue Hydrogen F Line)

nC

(Index for Red Hydrogen C Line)

vd

(Abbe Constant)		 Coefficient of Thermal Expansion -30°C to 70°C Coefficient of Thermal Expansion +20°C to 300°C Young's Modulus Poisson's Ratio Density Knoop Hardness Resistance to Weathering Resistance to Staining
SK3 1.6088 1.6160 1.6056 58.92 6.3X10-6/°C 7.4X10-6/°C 83X103N/mm2 .263 3.53 g/cm3 480 Moderate High
SK5 1.5891 1.5958 1.5861 61.27 5.5X10-6/°C 6.5X10-6/°C 84X103N/mm2 .256 3.30 g/cm3 480 Moderate Very High
SK11 1.5638 1.5702 1.5610 60.80 6.5X10-6/°C 7.6X10-6/°C 79X103N/mm2 .239 3.08 g/cm3 510 High Very High
SK16 1.6204 1.6275 1.6172 60.33 6.3X10-6/°C 7.3X10-6/°C 89X103N/mm2 .267 3.58 g/cm3 490 Low Low
S-LAL8 1.71300 1.72221 1.70897 53.9 6.1x10-6/°C 7.4x10-6/°C 114x103N/mm2 .2893.79 g/cm3660Moderate    High
S-NSL5 1.52249 1.52857 1.51983 59.8 8.2x10-6/°C 9.5x10-6/°C 69.1x103N/mm2.1402.49 g/cm3540HighVery High
SSK2 1.6223 1.63048 1.61878 53.15 6.2X10-6/°C 7.1X10-6/°C 78X103N/mm2 .255 3.67 g/cm3 560 High Moderate to High
 

nd

 (Index for Yellow Helium Line)

nF

(Index for Blue Hydrogen F Line)

nC

(Index for Red Hydrogen C Line)

vd

(Abbe Constant)		 Coefficient of Thermal Expansion -30°C to 70°C Coefficient of Thermal Expansion +20°C to 300°C Young's Modulus Poisson's Ratio Density Knoop Hardness Resistance to Weathering Resistance to Staining
SSK4A 1.61765 1.62547 1.61427 55.14 6.1X10-6/°C 7.1X10-6/°C 79X103N/mm2 .266 3.63 g/cm3 560 High High
SSK51 1.60361 1.61147 1.60022 53.63 7.6X10-6/°C 8.7X10-6/°C 80X103N/mm2 .253 3.28 g/cm3 560 Moderate Very High
S-TIH1 1.71736 1.73463 1.71033 29.5 8.2x10-6/°C 9.6x10-6/°C 88.4x103N/mm2 .2473.06 g/cm3550Very High
High
S-TIH4 1.75520 1.77475 1.74730 27.58.5x10-6/°C 10x10-6/°C91.9x103N/mm2 .2543.15 g/cm3570Very High
High
S-TIH6 1.80518 1.82777 1.79611 25.48.9x10-6/°C 10.7x10-6/°C 93.1x103N/mm2 .2613.37 g/cm3540Very High
Very High
 

nd

 (Index for Yellow Helium Line)		 

nF

(Index for Blue Hydrogen F Line)		 

nC

(Index for Red Hydrogen C Line)




vd

(Abbe Constant)		 
Coefficient of Thermal Expansion -30°C to 70°C		 
COEFFICIENT OF THERMAL EXPANSION FROM +20°C TO 300°C



Young's Modulus		 



Poisson's Ratio		 




Density



Knoop Hardness		 


Resistance to Weathering		 


Resistance to Staining
S-TIH10
 1.72825 1.74645 1.72086 28.58.0x10-6/°C 9.7x10-6/°C102.4x103N/mm2 .2433.06 g/cm3570Very High
Very High
S-TIH11
 1.78472 1.80652 1.77596 25.7 8.9x10-6/°C 10.3x10-6/°C 91.2x103N/mm2 .2553.24 g/cm3550Very High
Very High
S-TIH18 1.72151 1.73905 1.71437 29.2 8.3x10-6/°C 9.8x10-6/°C 89.1x103N/mm2 .2483.07 g/cm3560HighHigh
S-TIH23
 1.78470 1.80597 1.77613 26.3 8.8x10-6/°C 10.6x10-6/°C 92.2x103N/mm2 .2603.30 g/cm3540HighVery High
S-TIH53
 1.84666 1.87210 1.83649 23.8 8.8x10-6/°C 10.4x10-6/°C 96x103N/mm2 .2663.54 g/cm3520
Very High
Very High
S-TIM2
 1.62004 1.63212 1.61502 36.3 8.1x10-6/°C 9.5x10-6/°C 77.6x103N/mm2 .2302.69 g/cm3550HighVery High
 

nd

 (Index for Yellow Helium Line)		 

nF

(Index for Blue Hydrogen F Line)

 

nC

(Index for Red Hydrogen C Line)		 



vd

(Abbe Constant)		 
Coefficient of Thermal Expansion -30°C to 70°C		 
Coefficient of Thermal Expansion +20°C to 300°C



Young's Modulus		 



Poisson's Ratio		 




Density		 



Knoop Hardness		 


Resistance to Weathering		 


Resistance to Staining
S-TIM3
 1.61293 1.62463 1.60806 37.0 7.7x10-6/°C 9.1x10-6/°C 77.9x103N/mm2 .2292.67 g/cm3510Very High
Very High
S-TIM22
 1.64769 1.66126 1.64210 33.8 8.3x10-6/°C 9.8x10-6/°C 79.8x103N/mm2 .2382.79 g/cm3560Very High
Very High
S-TIM25
 1.67270 1.68756 1.66661 32.1 7.9x10-6/°C 9.5x10-6/°C 84.1x103N/mm2 .2362.91 g/cm3570HighHigh
S-TIM28 1.68893 1.70467 1.68250 31.1 8.2x10-6/°C 9.8x10-6/°C85.5x103N/mm2 .2422.98 g/cm3550Very High
Very High
S-TIM35
 1.69895 1.71542 1.69222 30.1 7.5x10-6/°C 8.9x10-6/°C 87.5x103N/mm2 .2382.96 g/cm3500Very High
Very High
S-TIM39
 1.66680 1.68110 1.66092 33.0 8.7x10-6/°C 10.4x10-6/°C 81.7x103N/mm2 .2462.92 g/cm3 550 Very High
 Very High
ZK5 1.53375 1.54049 1.53084 55.31 8.7X10-6/°C 10.2X10-6/°C 68X103N/mm2 .238 2.76 g/cm3 430 Very High Very High
Zinc Selenide — — — — 8.5X10-6/°C 8.5X10-6/°C — — 5.27 g/cm3 100 Moderate —

back to top

Lens Finder

Focal Length:

From:

 mm

To:

 mm
Enter R1:

From:

 mm

To:

 mm
Enter R2:

From:

 mm

To:

 mm
Enter Thickness:

From:

 mm

To:

 mm
Enter Diameter:

From:

 mm

To:

 mm
Enter Index (Nd):

From:

To:

Enter Dispersion (Vd):

From:

To:

OPTICAL CALCULATOR

 calculator

Easy access to formulae for commonly used calculations and conversions.

FEATURED NEWS

JML Optical Announces New CFO

Mr. Leonard (Len) DiSalvo has joined us as our Chief Financial Officer.