Hard coat broadband filters
Our first-surface, hard-coat, broadband filters employ magnetron sputtered, hard-oxide coatings deposited on Borosilicate Glass and do not utilize any absorbing filter glasses, making them suitable for high temperature applications.
Description
Our first-surface, hard-coat, broadband filters employ magnetron sputtered, hard-oxide coatings deposited on Borosilicate Glass and do not utilize any absorbing filter glasses, making them suitable for high temperature applications. They provide a steep transition from a high, peak transmission to OD4 blocking. Available at standard Raman wavelengths: 488, 514, 532, 633, 785nm. We offer three standard sizes, with custom sizes available on request.
Features
- First surface, hard sputtered coating
HARD-COATED BROADBAND BENEFITS
- Hard, durable, first-surface coatings
- Suitable for high-temperature applications
- Available from stock
HARD-COATED BROADBAND COMMON APPLICATIONS
- Raman Spectroscopy
- Machine Vision
- Biotech instrumentation
- Medical devices
Specifications
| General Specifications | |
|---|---|
| Thickness | 3.0±0.25 mm |
| Size Tolerance | +0.0 mm / -0.2 mm |
| Minimum Clear Aperture | 85% of outside dimension |
| Substrate Material | Borosilicate Glass |
| Flatness | 3 – 5 waves |
| Surface Quality | 60 – 40 per MIL-C-48497A |
| Humidity and Abrasion | Per MIL-C-675A |
| Durability | Per MIL-C-48497A |
| Operating Temperature | -50 °C – +200 °C |
| Mechanical | Unmounted |
| Optional: Mounted in the threaded ring – contact our expert on the right for thread sizes | |
Types
CW/L (nm) | FWHM (nm) | Line | Transmission T (avg.) | OD4 (avg.) Blocking @ (nm) | Part Number |
|---|---|---|---|---|---|
| 335 441.6 470 | 80±-8.0 150±15.0 100±10.0 | Zinc He/Cd laser LED | ≥75% ≥80% ≥90% | 200-650 200-850 200-850 | 355HC80 442HC150 470HC100 |
| 488 514 532 | 80±8.0 80±8.0 150±15.0 | Argon laser Argon laser Na:YAG | ≥90% ≥90% ≥90% | 200-850 200-850 200-950 | 488HC80 515HC80 532HC150 |
| 550 632.8 785 | 300±30.0 90±9.0 150±15.0 | LED HeNe Sapphire | ≥90% ≥90% ≥90% | 200-1000 200-1000 200-1100 | 550HC300 633HC90 785HC150 |
