General Specifications

Spectral Curves

Dichroic Filters

Dichroic filters (color separation filters) are used in a variety of applications where it is necessary to isolate certain regions of the visible spectrum. A few of the more common applications are for use in color enlargers and photocopiers as light balancing filters. They are also very useful in any application where it may be desirable to separate the incident energy into two or more light beams. The following spectral curves are displayed at normal incidence, but for many applications, such as combining colors, it may be desirable to use them in the reflecting mode at a 45° angle of incidence.

All of the coating materials used in these filters produce hard, durable dielectric films which show no signs of degradation with age and use. Unlike the organic dye or gelatin type which will fade with usage these filters are very stable and should not suffer any loss in efficiency with time. These filters are also available in sets. Filters can also be mounted in threaded rings.

Custom sizes, substrates and spectral characteristics are available on request. Contact us for a quotation.

Dichroic Filters General Specifications
Thickness: 1.0mm ±0.25mm
Size Tolerance: +0.0mm/-0.25mm
Min. Clear Aperture: 95% of outside dimension
Substrate Material: Soda lime glass
Flatness: 3–5 waves per 25mm
Parallelism: 3 arc minutes or better
Surface Quality: 80/50 per MIL-C-48497A
Humidity and Abrasion: Per MIL-C-48497A
Max. Operating Temp:+200°C
Mechanical:Unmounted
DESCRIPTION PART NO. 1-5 pcs. >5 pcs. QTY IN STOCK QTY
+ Blue Dichroic Reflective, 25.0 475FD68-25 $34 $32 3
Filter Type Blue Dichroic Reflective
Transmission >85% avg. from 525 to 800nm
Reflection
Nominal 50% point(s) - 475nm cut-on (nominal)- T(avg) < 10% from 380 to 450nm- T(avg) > 85% from 525 to 800nm
Size 25.0 +0/-0.25mm
Thickness 1.0 +0.25/-0.25 mm
Angle of Incidence 45.0°
Operating Temp. (°C.) +200 max.
CSV File (typical) 475FD68.csv
Graph Test
QtyPrice
1-5 $34
6+ $32
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph .
+ Blue Dichroic Reflective, 50.0 475FD68-50 $65 $62 4
Filter Type Blue Dichroic Reflective
Transmission >85% avg. from 525 to 800nm
Reflection
Nominal 50% point(s) - 475nm cut-on (nominal)- T(avg) < 10% from 380 to 450nm- T(avg) > 85% from 525 to 800nm
Size 50.0 +0/-0.25mm
Thickness 1.0 +0.25/-0.25 mm
Angle of Incidence 45.0°
Operating Temp. (°C.) +200 max.
CSV File (typical) 475FD68.csv
Graph Test
QtyPrice
1-5 $65
6+ $62
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph .
+ Blue Dichroic Reflective, 50.0 x 50.0 475FD68-50S $67 $64 4
Filter Type Blue Dichroic Reflective
Transmission >85% avg. from 525 to 800nm
Reflection
Nominal 50% point(s) - 475nm cut-on (nominal)- T(avg) < 10% from 380 to 450nm- T(avg) > 85% from 525 to 800nm
Size 50.0 x 50.0 +0/-0.25mm
Thickness 1.0 +0.25/-0.25 mm
Angle of Incidence 45.0°
Operating Temp. (°C.) +200 max.
CSV File (typical) 475FD68.csv
Graph Test
QtyPrice
1-5 $67
6+ $64
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph .
+ Blue Dichroic Additive, 25.0 505FD64-25 $34 $32 8
Filter Type Blue Dichroic Additive
Transmission >80% avg. from 390 to 480nm
Reflection
Nominal 50% point(s) 505nm cut-off (nominal)>80% (avg) trans. from 390nm to 480nm>99% (avg) Refl. from 540nm to 750nm
Size 25.0 +0/-0.25mm
Thickness 1.0 +0.25/-0.25 mm
Angle of Incidence 0°
Operating Temp. (°C.) +200 max.
CSV File (typical) 505FD64.csv
Graph Test
QtyPrice
1-5 $34
6+ $32
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph .
+ Blue Dichroic Additive, 50.0 505FD64-50 $65 $62 4
Filter Type Blue Dichroic Additive
Transmission >80% avg. from 390 to 480nm
Reflection
Nominal 50% point(s) 505nm cut-off (nominal)>80% (avg) trans. from 390nm to 480nm>99% (avg) Refl. from 540nm to 750nm
Size 50.0 +0/-0.25mm
Thickness 1.0 +0.25/-0.25 mm
Angle of Incidence 0°
Operating Temp. (°C.) +200 max.
CSV File (typical) 505FD64.csv
Graph Test
QtyPrice
1-5 $65
6+ $62
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph .
+ Blue Dichroic Additive, 50.0 x 50.0 505FD64-50S $67 $64 19
Filter Type Blue Dichroic Additive
Transmission >80% avg. from 390 to 480nm
Reflection
Nominal 50% point(s) 505nm cut-off (nominal)>80% (avg) trans. from 390nm to 480nm>99% (avg) Refl. from 540nm to 750nm
Size 50.0 x 50.0 +0/-0.25mm
Thickness 1.0 +0.25/-0.25 mm
Angle of Incidence 0°
Operating Temp. (°C.) +200 max.
CSV File (typical) 505FD64.csv
Graph Test
QtyPrice
1-5 $67
6+ $64
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph .
+ Yellow Dichroic Subtractive, 25.0 520FD22-25 $34 $32 0
Filter Type Yellow Dichroic Subtractive
Transmission >85% avg. from 550 to 750nm
Reflection
Nominal 50% point(s) 50% pt.: 520nm nominalT(avg) < 1% from 410 - 475nmT(avg) > 85% from 550 - 750nm
Size 25.0 +0/-0.25mm
Thickness 1.0 +0.25/-0.25 mm
Angle of Incidence 0°
Operating Temp. (°C.) +200 max.
CSV File (typical) 520FD22.csv
Graph Test
QtyPrice
1-5 $34
6+ $32
Estimated delivery: approximately 1 week.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph .
+ Yellow Dichroic Subtractive, 50.0 520FD22-50 $65 $62 8
Filter Type Yellow Dichroic Subtractive
Transmission >85% avg. from 550 to 750nm
Reflection
Nominal 50% point(s) 50% pt.: 520nm nominalT(avg) < 1% from 410 - 475nmT(avg) > 85% from 550 - 750nm
Size 50.0 +0/-0.25mm
Thickness 1.0 +0.25/-0.25 mm
Angle of Incidence 0°
Operating Temp. (°C.) +200 max.
CSV File (typical) 520FD22.csv
Graph Test
QtyPrice
1-5 $65
6+ $62
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph .
+ Yellow Dichroic Subtractive, 50.0 x 50.0 520FD22-50S $67 $64 5
Filter Type Yellow Dichroic Subtractive
Transmission >85% avg. from 550 to 750nm
Reflection
Nominal 50% point(s) 50% pt.: 520nm nominalT(avg) < 1% from 410 - 475nmT(avg) > 85% from 550 - 750nm
Size 50.0 x 50.0 +0/-0.25mm
Thickness 1.0 +0.25/-0.25 mm
Angle of Incidence 0°
Operating Temp. (°C.) +200 max.
CSV File (typical) 520FD22.csv
Graph Test
QtyPrice
1-5 $67
6+ $64
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph .
+ Green Dichroic Additive, 25.0 540FD66-25 $34 $32 0
Filter Type Green Dichroic Additive
Transmission >85% min. at 540nm
Reflection
Nominal 50% point(s) 505nm & 575nm (nominal)T(avg) < 1% from 380 - 460nmT(abs) > 85% @ 540nmT(avg) < 1% from 600 - 730nm
Size 25.0 +0/-0.25mm
Thickness 1.0 +0.25/-0.25 mm
Angle of Incidence 0°
Operating Temp. (°C.) +200 max.
CSV File (typical) 540FD66.csv
Graph Test
QtyPrice
1-5 $34
6+ $32
Estimated delivery: approximately 1 week.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph .
+ Green Dichroic Additive, 50.0 540FD66-50 $65 $62 4
Filter Type Green Dichroic Additive
Transmission >85% min. at 540nm
Reflection
Nominal 50% point(s) 505nm & 575nm (nominal)T(avg) < 1% from 380 - 460nmT(abs) > 85% @ 540nmT(avg) < 1% from 600 - 730nm
Size 50.0 +0/-0.25mm
Thickness 1.0 +0.25/-0.25 mm
Angle of Incidence 0°
Operating Temp. (°C.) +200 max.
CSV File (typical) 540FD66.csv
Graph Test
QtyPrice
1-5 $65
6+ $62
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph .
+ Green Dichroic Additive, 50.0 x 50.0 540FD66-50S $67 $64 1
Filter Type Green Dichroic Additive
Transmission >85% min. at 540nm
Reflection
Nominal 50% point(s) 505nm & 575nm (nominal)T(avg) < 1% from 380 - 460nmT(abs) > 85% @ 540nmT(avg) < 1% from 600 - 730nm
Size 50.0 x 50.0 +0/-0.25mm
Thickness 1.0 +0.25/-0.25 mm
Angle of Incidence 0°
Operating Temp. (°C.) +200 max.
CSV File (typical) 540FD66.csv
Graph Test
QtyPrice
1-5 $67
6+ $64
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph .
+ Magenta Dichroic Subtractive, 25.0 550FD26-25 $34 $32 26
Filter Type Magenta Dichroic Subtractive
Transmission >80% avg. from 380 to 475nm & 650 to 750nm
Reflection
Nominal 50% point(s) 495nm and 605nm (nominal)T(avg) > 80% from 380 - 475nmT(avg) < 1% from 535 - 565nmT(avg) > 80% from 650 - 750nm
Size 25.0 +0/-0.25mm
Thickness 1.0 +0.25/-0.25 mm
Angle of Incidence 0°
Operating Temp. (°C.) +200 max.
CSV File (typical) 550FD26.csv
Graph Test
QtyPrice
1-5 $34
6+ $32
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph .
+ Magenta Dichroic Subtractive, 50.0 550FD26-50 $65 $62 9
Filter Type Magenta Dichroic Subtractive
Transmission >80% avg. from 380 to 475nm & 650 to 750nm
Reflection
Nominal 50% point(s) 495nm and 605nm (nominal)T(avg) > 80% from 380 - 475nmT(avg) < 1% from 535 - 565nmT(avg) > 80% from 650 - 750nm
Size 50.0 +0/-0.25mm
Thickness 1.0 +0.25/-0.25 mm
Angle of Incidence 0°
Operating Temp. (°C.) +200 max.
CSV File (typical) 550FD26.csv
Graph Test
QtyPrice
1-5 $65
6+ $62
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph .
+ Magenta Dichroic Subtractive, 50.0 x 50.0 550FD26-50S $67 $64 3
Filter Type Magenta Dichroic Subtractive
Transmission >80% avg. from 380 to 475nm & 650 to 750nm
Reflection
Nominal 50% point(s) 495nm and 605nm (nominal)T(avg) > 80% from 380 - 475nmT(avg) < 1% from 535 - 565nmT(avg) > 80% from 650 - 750nm
Size 50.0 x 50.0 +0/-0.25mm
Thickness 1.0 +0.25/-0.25 mm
Angle of Incidence 0°
Operating Temp. (°C.) +200 max.
CSV File (typical) 550FD26.csv
Graph Test
QtyPrice
1-5 $67
6+ $64
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph .
+ Red Dichroic Reflective, 25.0 580FD70-25 $34 $32 20
Filter Type Red Dichroic Reflective
Transmission >85% avg. from 400 to 550nm
Reflection
Nominal 50% point(s) 50% pt.: 580nm nominalT(avg) > 85% from 400 - 550nmT(avg) < 10% from 610 - 725nm
Size 25.0 +0/-0.25mm
Thickness 1.0 +0.25/-0.25 mm
Angle of Incidence 45.0°
Operating Temp. (°C.) +200 max.
Graph Test
QtyPrice
1-5 $34
6+ $32
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph .
+ Red Dichroic Reflective, 50.0 580FD70-50 $65 $62 0
Filter Type Red Dichroic Reflective
Transmission >85% avg. from 400 to 550nm
Reflection
Nominal 50% point(s) 50% pt.: 580nm nominalT(avg) > 85% from 400 - 550nmT(avg) < 10% from 610 - 725nm
Size 50.0 +0/-0.25mm
Thickness 1.0 +0.25/-0.25 mm
Angle of Incidence 45.0°
Operating Temp. (°C.) +200 max.
Graph Test
QtyPrice
1-5 $65
6+ $62
Estimated delivery: approximately 1 week.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph .
+ Red Dichroic Reflective, 50.0 x 50.0 580FD70-50S $67 $64 0
Filter Type Red Dichroic Reflective
Transmission >85% avg. from 400 to 550nm
Reflection
Nominal 50% point(s) 50% pt.: 580nm nominalT(avg) > 85% from 400 - 550nmT(avg) < 10% from 610 - 725nm
Size 50.0 x 50.0 +0/-0.25mm
Thickness 1.0 +0.25/-0.25 mm
Angle of Incidence 45.0°
Operating Temp. (°C.) +200 max.
Graph Test
QtyPrice
1-5 $67
6+ $64
Estimated delivery: approximately 1 week.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph .
+ Red Dichroic Additive, 25.0 585FD62-25 $34 $32 19
Filter Type Red Dichroic Additive
Transmission >80% avg. from 610 to 730nm
Reflection
Nominal 50% point(s) 50% pt: 585nm nominalT(avg) < 1% from 370 - 550nmT(avg) > 80% from 610 - 730nm
Size 25.0 +0/-0.25mm
Thickness 1.0 +0.25/-0.25 mm
Angle of Incidence 0°
Operating Temp. (°C.) +200 max.
CSV File (typical) 585FD62.csv
Graph Test
QtyPrice
1-5 $34
6+ $32
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph .
+ Red Dichroic Additive, 50.0 585FD62-50 $65 $62 2
Filter Type Red Dichroic Additive
Transmission >80% avg. from 610 to 730nm
Reflection
Nominal 50% point(s) 50% pt: 585nm nominalT(avg) < 1% from 370 - 550nmT(avg) > 80% from 610 - 730nm
Size 50.0 +0/-0.25mm
Thickness 1.0 +0.25/-0.25 mm
Angle of Incidence 0°
Operating Temp. (°C.) +200 max.
CSV File (typical) 585FD62.csv
Graph Test
QtyPrice
1-5 $65
6+ $62
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph .
+ Red Dichroic Additive, 50.0 x 50.0 585FD62-50S $67 $64 3
Filter Type Red Dichroic Additive
Transmission >80% avg. from 610 to 730nm
Reflection >99% avg. from 370 to 550nm
Nominal 50% point(s) 50% pt: 585nm nominalT(avg) < 1% from 370 - 550nmT(avg) > 80% from 610 - 730nm
Size 50.0 x 50.0 +0/-0.25mm
Thickness 1.0 +0.25/-0.25 mm
Angle of Incidence 0°
Operating Temp. (°C.) +200 max.
CSV File (typical) 585FD62.csv
Graph Test
QtyPrice
1-5 $67
6+ $64
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph .
+ Cyan Dichroic Subtractive, 25.0 590FD24-25 $34 $32 46
Filter Type Cyan Dichroic Subtractive
Transmission >80% avg. from 400 to 550nm
Reflection
Nominal 50% point(s) 50% pt.: 590nm nominalT(avg) > 80% from 400 - 550nmT(avg) < 1% from 640 - 740nm
Size 25.0 +0/-0.25mm
Thickness 1.0 +0.25/-0.25 mm
Angle of Incidence 0°
Operating Temp. (°C.) +200 max.
CSV File (typical) 590FD24.csv
Graph Test
QtyPrice
1-5 $34
6+ $32
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph .
+ Cyan Dichroic Subtractive, 50.0 590FD24-50 $65 $62 8
Filter Type Cyan Dichroic Subtractive
Transmission >80% avg. from 400 to 550nm
Reflection
Nominal 50% point(s) 50% pt.: 590nm nominalT(avg) > 80% from 400 - 550nmT(avg) < 1% from 640 - 740nm
Size 50.0 +0/-0.25mm
Thickness 1.0 +0.25/-0.25 mm
Angle of Incidence 0°
Operating Temp. (°C.) +200 max.
CSV File (typical) 590FD24.csv
Graph Test
QtyPrice
1-5 $65
6+ $62
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph .
+ Cyan Dichroic Subtractive, 50.0 x 50.0 590FD24-50S $67 $64 1
Filter Type Cyan Dichroic Subtractive
Transmission >80% avg. from 400 to 550nm
Reflection
Nominal 50% point(s) 50% pt.: 590nm nominalT(avg) > 80% from 400 - 550nmT(avg) < 1% from 640 - 740nm
Size 50.0 x 50.0 +0/-0.25mm
Thickness 1.0 +0.25/-0.25 mm
Angle of Incidence 0°
Operating Temp. (°C.) +200 max.
CSV File (typical) 590FD24.csv
Graph Test
QtyPrice
1-5 $67
6+ $64
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph .