- OPTICAL FILTER
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3L-Systems offers high-quality filters at competitive prices.
INTERFERENCE BANDPASS FILTER
SPEC
| Thickness | 0.25“ normal |
|---|---|
| Surface Flatness | λ/2 for Y-direction, λ/4 for X-direction @ 633nm |
| Surface Quality | Commercial Polish |
| Centration Error | < 3 arc min. |
| Focal Length Tolerance | ± 0.5% |
| Diameter Tolerance | +0.0/-0.25mm |
| Thickness Tolerance | ±0.25mm |
| Clear Aperture | > 80% of diameter |
| Chamfer | 0.3mm at 45 typical |
REFLECTIVE NEUTRAL DENSITY FILTER
SPEC
| Substrate | VUV CaF2, UVFS of BK7 |
|---|---|
| Surface Flatness | λ/2 for Y-direction, λ/4 for X-direction @ 633nm |
| Surface Quality | 20-10 laser quality |
| Centration Error | < 3 arc min. |
| Focal Length Tolerance | ± 0.5% |
| Diameter Tolerance | +0.0/-0.25mm |
| Thickness Tolerance | ±0.25mm |
| Clear Aperture | > 85% of diameter |
| Chamfer | 0.3mm at 45 typical |
ABSORPTIVE NEUTRAL DENSITY FILTER
SPEC
| Substrate | VUV CaF2, UVFS of BK7 |
|---|---|
| Surface Flatness | λ/2 for Y-direction, λ/4 for X-direction @ 633nm |
| Surface Quality | 20-10 laser quality |
| Centration Error | < 3 arc min. |
| Focal Length Tolerance | ± 0.5% |
| Diameter Tolerance | +0.0/-0.25mm |
| Thickness Tolerance | ±0.25mm |
| Clear Aperture | > 85% of diameter |
| Chamfer | 0.3mm at 45 typical |
LONG WAVE PASS FILTER
SPEC
| Substrate | VUV CaF2, UVFS of BK7 |
|---|---|
| Surface Flatness | λ/2 for Y-direction, λ/4 for X-direction @ 633nm |
| Surface Quality | 20-10 laser quality |
| Centration Error | < 3 arc min. |
| Focal Length Tolerance | ± 0.5% |
| Diameter Tolerance | +0.0/-0.25mm |
| Thickness Tolerance | ±0.25mm |
| Clear Aperture | > 85% of diameter |
| Chamfer | 0.3mm at 45 typical |
SHORT WAVE PASS FILTER
SPEC
| Substrate | VUV CaF2, UVFS of BK7 |
|---|---|
| Surface Flatness | λ/2 for Y-direction, λ/4 for X-direction @ 633nm |
| Surface Quality | 20-10 laser quality |
| Centration Error | < 3 arc min. |
| Focal Length Tolerance | ± 0.5% |
| Diameter Tolerance | +0.0/-0.25mm |
| Thickness Tolerance | ±0.25mm |
| Clear Aperture | > 85% of diameter |
| Chamfer | 0.3mm at 45 typical |
COLOR GLASS BANDPASS FILTER
SPEC
| Substrate | VUV CaF2, UVFS of BK7 |
|---|---|
| Surface Flatness | λ/2 for Y-direction, λ/4 for X-direction @ 633nm |
| Surface Quality | 20-10 laser quality |
| Centration Error | < 3 arc min. |
| Focal Length Tolerance | ± 0.5% |
| Diameter Tolerance | +0.0/-0.25mm |
| Thickness Tolerance | ±0.25mm |
| Clear Aperture | > 85% of diameter |
| Chamfer | 0.3mm at 45 typical |
COLOR GLASS LONG WAVE SHARP CUT FILTER
SPEC
| Substrate | VUV CaF2, UVFS of BK7 |
|---|---|
| Surface Flatness | λ/2 for Y-direction, λ/4 for X-direction @ 633nm |
| Surface Quality | 20-10 laser quality |
| Centration Error | < 3 arc min. |
| Focal Length Tolerance | ± 0.5% |
| Diameter Tolerance | +0.0/-0.25mm |
| Thickness Tolerance | ±0.25mm |
| Clear Aperture | > 85% of diameter |
| Chamfer | 0.3mm at 45 typical |
HEAT CONTROL FILTER
SPEC
| Substrate | VUV CaF2, UVFS of BK7 |
|---|---|
| Surface Flatness | λ/2 for Y-direction, λ/4 for X-direction @ 633nm |
| Surface Quality | 20-10 laser quality |
| Centration Error | < 3 arc min. |
| Focal Length Tolerance | ± 0.5% |
| Diameter Tolerance | +0.0/-0.25mm |
| Thickness Tolerance | ±0.25mm |
| Clear Aperture | > 85% of diameter |
| Chamfer | 0.3mm at 45 typical |
HEAT ABSORBING FILTER
SPEC
| Substrate | VUV CaF2, UVFS of BK7 |
|---|---|
| Surface Flatness | λ/2 for Y-direction, λ/4 for X-direction @ 633nm |
| Surface Quality | 20-10 laser quality |
| Centration Error | < 3 arc min. |
| Focal Length Tolerance | ± 0.5% |
| Diameter Tolerance | +0.0/-0.25mm |
| Thickness Tolerance | ±0.25mm |
| Clear Aperture | > 85% of diameter |
| Chamfer | 0.3mm at 45 typical |