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Edge Filters
These filters use interference effects rather than
absorption to isolate the spectral bands. There are two types of edge
filters: Long Wave Pass (LWP) and Short Wave Pass (SWP), both are featured
with high rate of transition between their region of reflection and
transmission. LWP minimizes transmission below a given wavelength and
maximize transmission above it, while SWP minimizes transmission above a
given wavelength and maximize transmission below it.
Learn more about thin
film filters
Standard Edge Filters
|
Long Wave Pass Filters |
Short Wave Pass Filters |
|
Part # |
Cutoff Wavelength (nm) |
50%(OD6) Width (nm) |
Part # |
Cutoff
Wavelength(nm) |
50%(OD6) Width(nm) |
|
EF-400L |
400 |
2.0 |
EF-400S |
400 |
2.0 |
|
EF-450L |
450 |
2.0 |
EF-450S |
450 |
2.0 |
|
EF-500L |
500 |
2.5 |
EF-500S |
500 |
2.5 |
|
EF-550L |
550 |
2.5 |
EF-550S |
550 |
2.5 |
|
EF-600L |
600 |
2.5 |
EF-600S |
600 |
2.5 |
|
EF-650L |
650 |
3.0 |
EF-650S |
650 |
3.0 |
|
EF-700L |
700 |
3.0 |
EF-700S |
700 |
3.0 |
|
EF-750L |
750 |
3.0 |
EF-750S |
750 |
3.0 |
|
EF-800L |
800 |
3.5 |
EF-800S |
800 |
3.5 |
|
EF-850L |
850 |
3.5 |
EF-850S |
850 |
3.5 |
|
EF-900L |
900 |
3.5 |
EF-900S |
900 |
3.5 |
|
EF-950L |
950 |
4.0 |
EF-950S |
950 |
4.0 |
|
EF-1000L |
1000 |
4.0 |
EF-1000S |
1000 |
4.0 |
Edge filters for certain laser lines are
fabricated routinely in Newlight Photonics.
Please contact us for filters that best suit
your applications.
Edge Filter Specifications
| Substrate Material: |
Low fluorescent BK7 glass or equivalent |
| Substrate Size: |
Diameter: 10 or 15+0.0/-0.1 mm, Thickness: 3.3 ± 0.1 mm |
| Holder Size: |
Diameter: 25 +0.0/-0.1 mm, Thickness: 5.0 ± 0.1 mm |
| Passband
Transmission: |
> 92% |
| Stopband Blocking: |
OD > 6 |
| Surface Quality: |
60/40 scratch and dig |
| Clear Aperture: |
>85% of central area |
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