Our partner
Edge filters
from AndoverOften referred to as long wave pass (LWP) and short wave pass (SWP) filters, edge filters provide a well-defined transition between reflecting and transmitting regions. Essentially a modified quarter-wave stack, the filters use interference effects rather than absorption to isolate their spectral bands. Because edge filters will shift shorter with an increase in the angle of incidence, they are a good choice for fine-tuning the cut-on/cut-off wavelength. With their durable, first-surface dielectric coatings, Andover’s edge filters are built to withstand the normal cleaning and handling required by any high-quality optical component.
- Useful for redirecting a particular band of light
- Provide steeper transition than color glass filters
- Offer coverage over the 4001000 nm range
Specifications
| General Specifications | |
|---|---|
| Thickness | 4.0 mm maximum |
| Size Tolerance | +0.0/-0.5 mm |
| Min. Clear Aperture | 85% of outside dimension |
| Substrate Material | Glass (Note: BK-7 or Borofloat available as an Option for higher Tx) |
| Flatness | 3-5 waves per 25 mm |
| Surface Quality | 80/50 per MIL-C-48497A |
| Humidity and Abrasion | Per MIL-C-675A |
| Operating Temperature | -50 °C to +100 °C |
| Cut-on/cut-off Slopes | 6% Maximum (10% for 300 nm filter) |
| Cut-on/cut-off Tolerance | ±10 nm from 400-1000 nm ± 5 nm from 300-375 nm |
| Mechanical | Unmounted |
| Optional: Mounted in threaded ring - contact our expert on the right for thread sizes | |
| Transmission | |
|---|---|
| Long Wave Pass | 85% average from the 50% cut-on point to 2000 nm |
| Short Wave Pass | 85% average from the 50% cut-off point to 0.6 x the 50% cut-off point |
| Note: With the exception of the 400 nm filter, all SWP filters will drop off in transmission at wavelengths under 425 nm. | |
| Rejection | |
|---|---|
| Long Wave Pass | 99% or greater from 0.9 x the 50% point to the ultraviolet |
| Short Wave Pass | 99% or greater from 1.07 x the 50% point to 1.25 x the 50% point |
| Effective Index of Refraction (n*) | 1.7 (approximately) |
| Visible | ||||
|---|---|---|---|---|
| 50% Point | Size, Shape & Part Number | |||
| 12.5 mm Ø | 25 mm Ø | 50 mm Ø | 50 mm SQ | |
| 300 nm | 300FH90-12.5 | 300FH90-25 | 300FH90-50 | 300FH90-50S |
| 325 nm | 325FH90-12.5 | 325FH90-25 | 325FH90-50 | 325FH90-50S |
| 350 nm | 350FH90-12.5 | 350FH90-25 | 350FH90-50 | 350FH90-50S |
| 375 nm | 375FH90-12.5 | 375FH90-25 | 375FH90-50 | 375FH90-50S |
| 400 nm | 400FH90-12.5 | 400FH90-25 | 400FH90-50 | 400FH90-50S |
| 450 nm | 450FH90-12.5 | 450FH90-25 | 450FH90-50 | 450FH90-50S |
| 500 nm | 500FH90-12.5 | 500FH90-25 | 500FH90-50 | 500FH90-50S |
| 550 nm | 550FH90-12.5 | 550FH90-25 | 550FH90-50 | 550FH90-50S |
| 600 nm | 600FH90-12.5 | 600FH90-25 | 600FH90-50 | 600FH90-50S |
| 650 nm | 650FH90-12.5 | 650FH90-25 | 650FH90-50 | 650FH90-50S |
| 700 nm | 700FH90-12.5 | 700FH90-25 | 700FH90-50 | 700FH90-50S |
| Near Infrared | ||||
|---|---|---|---|---|
| 50% Point | Size, Shape & Part Number | |||
| 12.5 mm Ø | 25 mm Ø | 50 mm Ø | 50 mm SQ | |
| 750 nm | 750FH90-12.5 | 750FH90-25 | 750FH90-50 | 750FH90-50S |
| 800 nm | 800FH90-12.5 | 800FH90-25 | 800FH90-50 | 800FH90-50S |
| 850 nm | 850FH90-12.5 | 850FH90-25 | 850FH90-50 | 850FH90-50S |
| 900 nm | 900FH90-12.5 | 900FH90-25 | 900FH90-50 | 900FH90-50S |
| 950 nm | 950FH90-12.5 | 950FH90-25 | 950FH90-50 | 950FH90-50S |
| 1000 nm | 100FH90-12.5 | 100FH90-25 | 100FH90-50 | 100FH90-50S |
| Visible | ||||
|---|---|---|---|---|
| 50% Point | Size, Shape & Part Number | |||
| 12.5 mm Ø | 25 mm Ø | 50 mm Ø | 50 mm SQ | |
| 400 nm | 400FL07-12.5 | 400FL07-25 | 400FL07-50 | 400FL07-50S |
| 450 nm | 450FL07-12.5 | 450FL07-25 | 450FL07-50 | 450FL07-50S |
| 500 nm | 500FL07-12.5 | 500FL07-25 | 500FL07-50 | 500FL07-50S |
| 550 nm | 550FL07-12.5 | 550FL07-25 | 550FL07-50 | 550FL07-50S |
| 600 nm | 600FL07-12.5 | 600FL07-25 | 600FL07-50 | 600FL07-50S |
| 650 nm | 650FL07-12.5 | 650FL07-25 | 650FL07-50 | 650FL07-50S |
| 700 nm | 700FL07-12.5 | 700FL07-25 | 700FL07-50 | 700FL07-50S |
| Near Infrared | ||||
|---|---|---|---|---|
| 50% Point | Size, Shape & Part Number | |||
| 12.5 mm Ø | 25 mm Ø | 50 mm Ø | 50 mm SQ | |
| 750 nm | 750FL07-12.5 | 750FL07-25 | 750FL07-50 | 750FL07-50S |
| 800 nm | 800FL07-12.5 | 800FL07-25 | 800FL07-50 | 800FL07-50S |
| 850 nm | 850FL07-12.5 | 850FL07-25 | 850FL07-50 | 850FL07-50S |
| 900 nm | 900FL07-12.5 | 900FL07-25 | 900FL07-50 | 900FL07-50S |
| 950 nm | 950FL07-12.5 | 950FL07-25 | 950FL07-50 | 950FL07-50S |
| 1000 nm | 100FL07-12.5 | 100FL07-25 | 100FL07-50 | 100FL07-50S |
Applications
Fluorescence
Photometry
Color enhancement and combining
Navigation
Categories
Contact
Quantum Design Turkiye
Sakarya Mah. Bassehir Sk. 14/A
06230 Altindag / Ankara
Turkey
| Phone: | +90 532 3205241 |
| E-mail: | turkeyqd-europe.com |
