Optical Filters and Specialty Glasses
Near Infrared (NIR) Absorptive Filter
SC 504/ SCM 504
- NIR absorptive filter is equipped with solid-state image sensing devices, such as CCD or CMOS, so that natural and accurate colors are produced. Our absorptive filters are ideal bandpass for visual areas when high absorption in the near infrared (NIR) wavelength range is required.
- SCM504 has sharper NIR absorption compared to SC504.
- Designed to perform in difficult environments for long hours of operation - repeatable optical performance with high chemical endurance and humidity resistance.
- High transmission in the visible range and effective absorption in the NIR range.
Specifications
| SC 504 | SCM 504 | |||
|---|---|---|---|---|
| Optical properties | Refractive index (nd) | 1.5291 | 1.53063 | |
| Thermal properties | Transformation point Tg (℃) | 508 | 502 | |
| Yielding point At (℃) | 556 | 545 | ||
| Thermal expansion (α×10-7) (-30 - +70℃) |
66 | 71 | ||
| Thermal expansion (α×10-7) (100 - 300℃) |
81 | 87 | ||
| Chemical endurance | Powder method* | Acid resistance RA | 1 | 1 |
| Water resistance RW | 1 | 1 | ||
| Surface method | Endurance DW | 1 | 1 | |
| Other properties | Specific gravity S.g | 2.62 | 2.64 | |
| Machinery properties | Knoop Hardness HK (N/㎜2) (Rank) |
433 (4) |
503 (5) |
|
| Young’s modulus E (×108N/m2) | 794 | 782 | ||
| Modulus of rigidity G (×108N/m2) | 325 | 319 | ||
| Poisson ratio σ | 0.222 | 0.227 | ||
* Chemical endurance (powder method) data is measured by Japan Optical Glass Industry Standard.
Spectral Diagram
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