GrayGlass - www.grayglass.net
Kopp Sharp Cut Red - 2408
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Sharp Cut Red - 2408
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Note: Graph and tabular data at 4.18 mm
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Filter Specifications
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| Transmission must be 37% between 619 nm and 628 nm (cut-off wavelength) | |
| Transmission must be ³ 80% from 658 nm to 750 nm | |
| Transmission must be < 0.5% at wavelength shorter than 599 nm | |
| Difference between 15% and 60% transmission must be < 15 nm | |
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Physical Properties
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| Nominal Thickness Range | 1.4 - 4.6 mm |
| Refractive Index | nD = 1.50 |
| Density | 2.41 g/cm3 |
| Thermal Linear Expansion | 40E-7 /ºC (30-300 ºC) |
| Strain Temperature | 517 ºC |
| Annealing Temperature | 526 ºC |
| Deformation Temperature | 707 ºC |
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Sharp Cut Red - 2408
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Wavelength
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Transmission
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Wavelength
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Transmission
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Wavelength
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Transmission
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(nm)
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(%)
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(nm)
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(%)
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(nm)
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(%)
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200
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0.00
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435
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0.00
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670
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85.15
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205
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0.00
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440
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0.00
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675
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85.54
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210
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0.00
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445
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0.00
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680
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85.95
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215
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0.00
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450
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0.00
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685
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86.24
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220
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0.00
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455
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0.00
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690
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86.46
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225
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0.00
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460
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0.00
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695
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86.63
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230
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0.00
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465
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0.00
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700
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86.93
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235
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0.00
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470
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0.00
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705
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87.09
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240
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0.00
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475
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0.00
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710
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87.10
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245
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0.00
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480
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0.00
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715
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87.26
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250
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0.00
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485
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0.00
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720
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87.28
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255
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0.00
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490
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0.00
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725
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87.39
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260
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0.00
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495
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0.00
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730
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87.39
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265
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0.00
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500
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0.00
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735
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87.44
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270
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0.00
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505
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0.00
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740
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87.30
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275
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0.00
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510
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0.00
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745
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87.48
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280
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0.00
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515
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0.00
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750
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87.49
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285
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0.00
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520
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0.00
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755
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87.30
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290
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0.00
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525
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0.00
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760
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87.38
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295
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0.00
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530
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0.00
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765
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87.30
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300
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0.00
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535
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0.00
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770
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87.24
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305
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0.00
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540
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0.00
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775
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87.30
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310
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0.00
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545
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0.00
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780
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87.17
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315
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0.00
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550
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0.00
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785
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87.17
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320
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0.00
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555
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0.00
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790
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87.01
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325
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0.00
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560
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0.00
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795
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86.94
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330
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0.00
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565
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0.00
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800
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86.88
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335
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0.00
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570
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0.00
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805
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86.83
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340
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0.00
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575
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0.00
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810
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86.65
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345
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0.00
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580
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0.00
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815
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86.71
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350
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0.00
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585
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0.00
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820
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86.66
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355
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0.00
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590
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0.00
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825
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86.44
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360
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0.00
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595
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0.01
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830
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86.47
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365
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0.00
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600
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0.04
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835
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86.16
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370
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0.00
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605
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0.15
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840
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86.16
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375
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0.00
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610
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0.77
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845
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85.96
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380
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0.00
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615
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3.94
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850
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86.06
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385
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0.00
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620
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15.52
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855
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85.76
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390
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0.00
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625
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37.53
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860
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85.47
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395
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0.00
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630
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58.19
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865
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85.87
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400
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0.00
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635
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70.69
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870
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85.38
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405
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0.00
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640
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77.00
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875
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86.04
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|
410
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0.00
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645
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80.32
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880
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85.83
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415
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0.00
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650
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82.15
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885
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85.67
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|
420
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0.00
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655
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83.28
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890
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85.22
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425
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0.00
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660
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83.93
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895
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85.07
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430
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