BP505
Cyan Bandpass Filter

Recommended for use with cyan LEDs

Our BP505 filter was designed for use with 500-510nm cyan LED lighting. It also has a function in UV fluorescence imaging of some commonly used stains.

The BP505 single substrate, hard-coated filter is designed to match the output of most cyan LEDs, widely considered to currently be the brightest "monochrome" LEDs available. Coupled with the spectral sensitivity of most CCD/CMOS sensors in use today that also peak in this range, this filter will result in images that are especially bright and very high in contrast.

The BP505 filter is particularly designed for use in line-scan/wide angle applications where they are extremely resistant to the effects of "blue shifting." Used together with the right lensing, a line of uniform end-to-end brightness can be imaged at wide angles.

Download Excel Spreadsheet with data and curve for this filter.
(to come)

Examples of filter effectiveness.

Standard Threaded Mounts:
We offer standard filter sizes from stock – 22.5mm to 62mm – for same- or next-day shipping. Larger filters – 67mm to 105mm – are made to order and are normally not returnable.

Click here for PDF drawing of standard mounts

Slip Mounts:
If your lens does not have threads for mounting a filter, Slip Mount adapters are available. Slip Mounts can attach a regular filter to a lens or attach a very large filter to accommodate a wide angle lens. Please call to order Slip Mount adapters.

C-Mounts:
3mm thick threaded mount for adding a filter between lens and camera
Click here for PDF drawing of c-mounts

Transmission chart (typical) (to come)
Passes 475-565nm
Absorbs UV and deep blue
Reflects 570-1100nm

1100
1090
1080
1070
1060
1050
1040
1030
1020
1010

1000
990
980
970
960
950
940
930
920
910

900
890
880
870
860
850
840
830
820
810

800
790
780
770
760
750
740
730
720
710

700
690
680
670
660

51.80
36.88
30.79
32.00
43.53
74.49
75.34
32.04
15.39
10.50

9.23
6.85
2.72
0.87
0.29
0.12
0.04
0.01
0.00
0.00

0.03
0.07
0.12
0.07
0.03
0.02
0.01
0.01
0.01
0.02

0.07
0.37
0.22
0.07
0.06
0.07
0.13
0.36
0.49
0.19

0.11
0.12
0.23
0.19
0.08

650
640
630
620
610
600
590
580
570
560

550
540
530
520
510
500
490
480
470
460

450
440
430
420
410
400
390
380
370
360

350
340
330
320
310
300
290
280
270
260

250
240
230
220
210

0.07
0.15
0.34
0.22
0.26
0.94
1.59
1.48
5.95
25.18

47.45
93.35
94.82
93.27
95.10
93.60
89.42
75.85
50.44
6.50

0.03
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

0.00
0.00
0.00
0.00
0.00