BP465
Blue Bandpass/UV BLock Filter

BP465 single substrate, hard-coated filters can be recommended for use in some blue LED (~470nm) applications where complete IR blocking is not required.

Please note that MidOpt usually recommends the BP470 Blue Bandpass Filter over the BP465; the BP470 has a broader blue peak, far superior blocking of IR wavelengths and less sensitivity to angle of incidence changes. This is particularly important in UV excited blue fluorescence imaging where the BP465 will often cut off a significant portion of the blue portion of the spectrum that is being emitted by the subject. All of this results in brighter, higher contrast images when using the BP470 filter in these situations.

Color longpass or shortpass filters have long been recommended for use with monochrome cameras to aid in increased contrast and resolution. As the name implies, these filters block shorter or longer visible wavelengths respectively. Except in those few cases where an UV blocking or other longpass filter is incorporated into the camera/sensor, for the most part MidOpt will recommend the use of one of our broad color bandpass filters (whose designs incorporate these longpass filters) over color shortpass filters alone.

Examples of filter effectiveness.

Download Excel Spreadsheet with data and curve for this filter.

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)
Passes 440-490nm, 825nm and above
Reflects 200-430nm and 500-820nm

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

90.10
93.98
89.87
80.87
73.68
72.02
76.46
84.63
88.72
82.66

72.70
68.26
72.76
83.61
85.40
68.96
53.39
49.68
59.68
81.30

85.17
67.10
61.84
71.69
61.98
35.51
37.87
81.37
11.73
2.37

1.14
0.94
0.61
0.18
0.05
0.02
0.03
0.01
0.05
0.06

0.01
0.00
0.02
0.11
0.85

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

0.12
0.18
0.60
0.19
0.21
0.21
0.13
0.15
0.14
0.15

0.31
0.56
1.33
4.14
16.33
51.42
88.96
89.92
90.22
93.50

91.69
83.44
21.14
1.50
0.17
0.03
0.00
0.00
0.00
0.00

0.00
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