BPF-850BC|850nm bandpass BPF|ANPR cameral filter|deep blocking filters for 850nm light source

Index > Filters > Bandpass filter > BPF-850BC
Last Upate: 2025-11-6
850nm bandpass filter
Part No：BPF-850BC
Name：850nm bandpass filter，LPR Filter
Application：ANPR，licence plate recognise
Feature：deep blocking ，grey type images
Substrate：color glass,Soda-lime glass
Size：Φ12X2.0mm,custom design available
Optical parameter
CWL：850±10nm，Tpeak>85% FWHM：60±10nm，
Blocking：Tave<0.5%，Tmax<1%@300-790nm and 920-1100nm
Definition of a ANPR or LPR filter
An ANPR filter is used on ANPR cameras. ANPR is Automatic Number Plate Recognition.
A LPR filter is used on LPR camera. LPR is License Plate Recognition.
Recognizing a vehicle number plate is a too difficult job for a standard CCTV camera. The main problem is the exposure caused by headlight at night, but even during the day the light reflection on the number plate can make the number recognition virtually impossible.Accute Optical’s part BPF-850BC is a 850nm IR bandpass filter,which is specially designed for ANPR or LPR cameras. It can remove strong light or glare form the headlight and get clear grey images.LPR filter or ANPR filter with ring is also acceptable.
IR 850nm bandpass filter for Recognizing a vehicle number plate,LPR,ANPR system
Test plot(demonstration)
850nm bandpass filter test plot
Test data(demonstration)
                                    IR bandpass filter
  from www.accuteoptical.com    
   Test Data of BPF-850BC
wavelength	Trans%
1100		0.184846103
1099		0.16367811
1098		0.156287849
1097		0.15563862
1096		0.165554747
1095		0.162388459
1094		0.159529805
1093		0.154603407
1092		0.143997982
1091		0.116607584
1090		0.118244104
1089		0.111813597
1088		0.114204988
1087		0.117203489
1086		0.120246656
1085		0.111409649
1084		0.102557018
1083		0.098659754
1082		0.089284554
1081		0.102693789
1080		0.093981735
1079		0.098561428
1078		0.107183002
1077		0.081372097
1076		0.094155341
1075		0.091488548
1074		0.083601028
1073		0.087100476
1072		0.094170213
1071		0.092217788
1070		0.092459455
1069		0.078963019
1068		0.088264294
1067		0.093252435
1066		0.090791203
1065		0.084712751
1064		0.096001863
1063		0.078738801
1062		0.087088637
1061		0.087507002
1060		0.078785792
1059		0.09494666
1058		0.096423201
1057		0.099543713
1056		0.079870693
1055		0.098664649
1054		0.096576251
1053		0.090900682
1052		0.099818558
1051		0.09724398
1050		0.104035869
1049		0.088277526
1048		0.098083481
1047		0.097425081
1046		0.117118411
1045		0.092202574
1044		0.113577358
1043		0.096415184
1042		0.096294425
1041		0.109536864
1040		0.09634342
1039		0.095731594
1038		0.106937639
1037		0.094521314
1036		0.112131409
1035		0.115744047
1034		0.09443865
1033		0.10266
1032		0.107899219
1031		0.097170599
1030		0.096512839
1029		0.105129063
1028		0.091589846
1027		0.098531231
1026		0.101304367
1025		0.094658725
1024		0.112890437
1023		0.10293223
1022		0.098705441
1021		0.093935832
1020		0.085669972
1019		0.109017804
1018		0.101769388
1017		0.098727524
1016		0.092172235
1015		0.084656686
1014		0.082560666
1013		0.091556609
1012		0.090060689
1011		0.088415429
1010		0.084981263
1009		0.079439461
1008		0.098367736
1007		0.079090625
1006		0.08294335
1005		0.083524615
1004		0.080376953
1003		0.078694329
1002		0.075734742
1001		0.084915265
1000		0.085558735
999		0.084223777
998		0.07996814
997		0.071582973
996		0.073447026
995		0.065943889
994		0.085729696
993		0.070046328
992		0.074768402
991		0.081868343
990		0.068928897
989		0.075570434
988		0.081560396
987		0.07514894
986		0.072154365
985		0.082864858
984		0.070747882
983		0.076050349
982		0.079580709
981		0.087589093
980		0.076802224
979		0.08086545
978		0.074622497
977		0.075220607
976		0.08325626
975		0.085772797
974		0.076754749
973		0.084939949
972		0.06501583
971		0.075532503
970		0.071965314
969		0.057882421
968		0.071368963
967		0.076498203
966		0.070492849
965		0.07542593
964		0.073394962
963		0.083542585
962		0.065974988
961		0.067766182
960		0.07309103
959		0.077052586
958		0.072101988
957		0.071774334
956		0.067584693
955		0.068963811
954		0.082022764
953		0.064139165
952		0.074905224
951		0.075683214
950		0.068817966
949		0.076696448
948		0.068960428
947		0.079424813
946		0.081251174
945		0.071750298
944		0.062861614
943		0.068532094
942		0.089906193
941		0.074175134
940		0.077488035
939		0.065737203
938		0.073403001
937		0.091685995
936		0.073116019
935		0.075377323
934		0.086405851
933		0.075290658
932		0.085065298
931		0.083461978
930		0.075273469
929		0.068529256
928		0.091634974
927		0.08293052
926		0.064334378
925		0.068759553
924		0.073646992
923		0.073717557
922		0.076774277
921		0.051574122
920		0.078915685
919		0.071266837
918		0.082865924
917		0.073345765
916		0.075802587
915		0.077857524
914		0.083897255
913		0.066990711
912		0.06759683
911		0.090541407
910		0.079488814
909		0.080395192
908		0.076776914
907		0.088571683
906		0.084100142
905		0.094747089
904		0.106755048
903		0.097621813
902		0.115490913
901		0.132365927
900		0.16516003
899		0.211246774
898		0.279252648
897		0.374094814
896		0.538546741
895		0.791766584
894		1.220399976
893		1.874945164
892		2.878203869
891		4.399852276
890		6.508505344
889		9.464149475
888		13.15952873
887		17.61831665
886		22.81262207
885		28.53221893
884		34.72291946
883		41.24333954
882		47.77670288
881		54.28288651
880		60.35398102
879		65.9282074
878		70.93722534
877		75.1701889
876		78.88484192
875		81.98796844
874		84.38026428
873		86.35149384
872		87.74700165
871		88.74221039
870		89.53629303
869		90.02419281
868		90.33475494
867		90.54447174
866		90.59173584
865		90.64963531
864		90.6645813
863		90.53595734
862		90.47724152
861		90.54501343
860		90.41960144
859		90.28085327
858		90.31506348
857		90.30565643
856		90.34316254
855		90.38687897
854		90.3940506
853		90.4450531
852		90.55477142
851		90.42992401
850		90.60975647
849		90.65168762
848		90.57411194
847		90.6362915
846		90.65803528
845		90.59803772
844		90.67760468
843		90.70098114
842		90.67399597
841		90.54541016
840		90.47520447
839		90.17266846
838		89.80462646
837		89.2869873
836		88.42194366
835		87.09658051
834		85.50366211
833		83.45079803
832		81.06018066
831		78.16390991
830		74.89191437
829		71.59428406
828		67.95072937
827		63.90564346
826		60.00422287
825		55.53835678
824		51.085495
823		46.73348236
822		42.20438766
821		37.69927216
820		33.48305511
819		29.31942558
818		25.35259056
817		21.7834568
816		18.55599785
815		15.5541153
814		12.91056538
813		10.6308136
812		8.551631927
811		6.775372505
810		5.330890656
809		4.104528427
808		3.080387831
807		2.313276529
806		1.673064947
805		1.192279696
804		0.855958164
803		0.612297475
802		0.444802642
801		0.322406471
800		0.236907721
799		-0.006483511
798		0.006405217
797		0.009906501
796		0.010010608
795		0.008182086
794		0.008552879
793		0.007770898
792		0.00747127
791		0.006433268
790		0.009060596
789		0.00734874
788		0.006963121
787		0.006646906
786		0.007655106
785		0.006987368
784		0.009348635
783		0.007598293
782		0.007443447
781		0.00880319
780		0.010844741
779		0.009499073
778		0.01112742
777		0.012094542
776		0.015526785
775		0.017735118
774		0.020540906
773		0.026140684
772		0.033139698
771		0.041450735
770		0.052071653
769		0.064517625
768		0.085386097
767		0.108200081
766		0.131413549
765		0.155164748
764		0.18013458
763		0.203654349
762		0.225861713
761		0.238692507
760		0.24095951
759		0.225133538
758		0.201412454
757		0.170721456
756		0.136297494
755		0.109435186
754		0.087929197
753		0.070258826
752		0.057382517
751		0.050398581
750		0.047047589
749		0.040300157
748		0.038126305
747		0.037603248
746		0.032999985
745		0.033527765
744		0.029965913
743		0.026781222
742		0.021799501
741		0.020743297
740		0.014063271
739		0.011398685
738		0.009950841
737		0.009772429
736		0.006275839
735		0.006127565
734		0.004727525
733		0.006701787
732		0.004189469
731		0.003762474
730		0.003925709
729		0.005649781
728		0.00383025
727		0.003717843
726		0.004106197
725		0.005170589
724		0.003847947
723		0.003621016
722		0.003701621
721		0.005147011
720		0.003390523
719		0.002557671
718		0.003025029
717		0.005081433
716		0.002400542
715		0.002829192
714		0.003117794
713		0.004284163
712		0.003841232
711		0.002869059
710		0.003157692
709		0.003829215
708		0.002313258
707		0.002201555
706		0.00210918
705		0.002786001
704		0.000661738
703		0.001109028
702		0.002212415
701		0.002668158
700		0.001798336
699		0.001819975
698		0.001586142
697		0.00308555
696		0.001770053
695		0.001323257
694		0.002599062
693		0.001260981
692		0.001704923
691		0.001237561
690		0.002507603
689		0.001319363
688		0.001339805
687		0.002527208
686		0.00155024
685		0.002102481
684		0.002319952
683		0.003502941
682		0.001294834
681		0.001786888
680		0.002914577
679		0.001985889
678		0.001516258
677		0.00285547
676		0.001641516
675		0.001163305
674		0.002231969
673		0.003049021
672		0.0018296
671		0.001797165
670		0.003468589
669		0.001952826
668		0.001327548
667		0.001181221
666		0.003716948
665		0.001603593
664		0.001650203
663		0.001448235
662		0.003303491
661		0.001096692
660		0.001349825
659		0.001808091
658		0.001281096
657		0.001825355
656		0.003126515
655		0.001822477
654		0.001606295
653		0.001816082
652		0.001569763
651		0.001226509
650		0.001104206
649		0.001567025
648		0.001827064
647		0.001616933
646		0.001807076
645		0.001678016
644		0.001841859
643		0.002063107
642		0.002555896
641		0.001345669
640		0.001191443
639		0.002209673
638		0.001480273
637		0.001762627
636		0.001865006
635		0.001573461
634		0.00172148
633		0.002228264
632		0.000535628
631		0.001218614
630		0.002234417
629		0.001660071
628		0.002411094
627		0.002974923
626		0.00172764
625		0.001446359
624		0.001565777
623		0.001985784
622		0.002066159
621		0.001425435
620		0.002671275
619		0.00209221
618		0.00244435
617		0.001684487
616		0.002397689
615		0.002554938
614		0.001257777
613		0.001535338
612		0.002453548
611		0.002205623
610		0.003191313
609		0.001924551
608		0.004457904
607		0.001615706
606		0.002188503
605		0.001974265
604		0.003685557
603		0.001551943
602		0.001772231
601		0.002265528
600		0.003056746
599		0.000856904
598		0.002109658
597		0.001600684
596		0.00186558
595		0.002027363
594		0.001823717
593		0.001876863
592		0.002081297
591		0.001251293
590		0.00194817
589		0.000199683
588		0.002468412
587		-0.000197009
586		0.001404548
585		0.00092355
584		0.00169056
583		0.001656272
582		0.000683605
581		0.00281481
580		0.001177666
579		0.002688913
578		0.000722939
577		0.003025612
576		0.002436011
575		0.000271861
574		0.001868978
573		0.002530275
572		0.000605577
571		0.002001229
570		0.002585246
569		0.001531663
568		0.002333701
567		0.001359287
566		0.002822818
565		0.001704802
564		0.001726336
563		0.002751873
562		0.001989941
561		0.001843972
560		0.002739812
559		0.003002221
558		0.003036932
557		0.002303194
556		0.002566127
555		0.002522234
554		0.002341606
553		0.002182259
552		0.002075351
551		0.002249033
550		0.001944873
549		0.001937358
548		0.002237046
547		0.002765886
546		0.002042674
545		0.00314801
544		0.002798708
543		0.002461448
542		0.002140496
541		0.002507206
540		0.002356854
539		0.001495227
538		0.002092543
537		0.002632235
536		0.004354937
535		0.001961861
534		0.00141357
533		0.002376754
532		0.002479248
531		0.00252903
530		0.002382448
529		0.002581091
528		0.002224774
527		0.002652686
526		0.002351834
525		0.002314567
524		0.002263317
523		0.002216898
522		0.002444062
521		0.002296181
520		0.002609265
519		0.002200874
518		0.001877866
517		0.001998997
516		0.002787031
515		0.002613719
514		0.002385443
513		0.001908713
512		0.003166163
511		0.0034228
510		0.002695615
509		0.002056651
508		0.002374311
507		0.002524282
506		0.002178834
505		0.00226259
504		0.002858638
503		0.002536115
502		0.00167124
501		0.002814587
500		0.002238269
499		0.002349504
498		0.002612071
497		0.003084958
496		0.003037189
495		0.003046395
494		0.002087649
493		0.001498654
492		0.002223183
491		0.002412609
490		0.002257208
489		0.002613962
488		0.002357877
487		0.002818759
486		0.002655768
485		0.003228712
484		0.002353492
483		0.002433949
482		0.001914369
481		0.002616956
480		0.002388009
479		0.002641978
478		0.002104213
477		0.002226901
476		0.002510889
475		0.002678185
474		0.002698968
473		0.002317969
472		0.002172569
471		0.002005479
470		0.003191625
469		0.001251637
468		0.002931348
467		0.002774766
466		0.002881774
465		0.003263106
464		0.002732597
463		0.002525696
462		0.002368957
461		0.00364202
460		0.002251983
459		0.002261247
458		0.002075805
457		0.001574271
456		0.002673806
455		0.002544089
454		0.001811606
453		0.003069355
452		0.003159771
451		0.001981824
450		0.003164345
449		0.000744872
448		0.002332247
447		0.002630383
446		0.002229622
445		0.002391771
444		0.002136478
443		0.002491581
442		0.002570219
441		0.001801153
440		0.003198938
439		0.003108318
438		0.002228384
437		0.002139495
436		0.002704435
435		0.001914447
434		0.003045523
433		0.002625335
432		0.002794477
431		0.00285292
430		0.002544877
429		0.000286346
428		0.003153139
427		0.002876956
426		0.003183811
425		0.002898802
424		0.000970475
423		0.002563836
422		0.002945341
421		0.002331901
420		0.003811439
419		0.002747903
418		0.001080657
417		0.002859744
416		0.002423651
415		0.00323039
414		0.000589995
413		0.002871581
412		0.002990951
411		0.003332434
410		0.000962011
409		0.003203019
408		0.003168988
407		0.002868864
406		0.00074739
405		0.002925078
404		0.003462152
403		0.000424856
402		0.003559313
401		0.002920151
400		0.003005678
399		0.001169748
398		0.003452236
397		0.002906254
396		0.001816992
395		0.003149817
394		0.004130819
393		0.003713036
392		0.00076731
391		0.003018845
390		0.004032057
389		0.002985024
388		0.001130299
387		0.003072049
386		0.003629447
385		0.002487808
384		0.001181635
383		0.003103029
382		0.002828877
381		0.002576963
380		0.002855326
379		0.001327799
378		0.003776493
377		0.003197162
376		0.003513041
375		0.001276754
374		0.003487825
373		0.002314573
372		0.002965358
371		0.00092675
370		0.003258402
369		0.003310854
368		0.003193603
367		0.00297203
366		0.001133339
365		0.002791025
364		0.003155626
363		0.001879509
362		0.004923435
361		0.002622833
360		0.003350679
359		0.001397303
358		0.003141321
357		0.003405113
356		0.001027927
355		0.003057909
354		0.003178292
353		0.001553363
352		0.002696786
351		0.003005105
350		0.000726324
349		-0.011225748
348		-0.002282143
347		0.003064313
346		0.0035063
345		0.00326773
344		0.002796587
343		0.00173937
342		0.00278196
341		0.001642921
340		0.002099594
339		0.000246776
338		0.000453073
337		0.000219946
336		0.00102064
335		0.000322356
334		0.001165443
333		0.001066837
332		0.000843342
331		0.003097429
330		0.000717548
329		0.001310773
328		0.000818012
327		-0.000123147
326		0.001942861
325		0.000799546
324		0.000999036
323		9.82E-05
322		0.000558233
321		0.002570272
320		0.000434377
319		0.001622972
318		0.000917493
317		0.00301686
316		0.001158303
315		0.001555397
314		0.000599654
313		0.001219794
312		0.002566748
311		0.001071514
310		0.000755574
309		0.001134509
308		0.001111161
307		0.002584479
306		0.000985337
305		0.000729731
304		0.001200104
303		0.003206414
302		0.001295123
301		0.000202357
300		0.001593844
299		0.000972934
298		0.002668579
297		0.00115628
296		0.000889304
295		0.000910282
294		0.002294011
293		0.000643928
292		0.001149942
291		0.002632364
290		0.001512396
289		0.000716534
288		0.000312869
287		0.002279497
286		0.000166478
285		0.00109127
284		0.003103571
283		0.001020271
282		0.000614757
281		0.00104495
280		0.003139955
279		0.001008598
278		0.00071622
277		0.000825201
276		0.002921112
275		0.001050808
274		0.001227256
273		0.002835816
272		0.001732549
271		0.001029862
270		0.000809989
269		6.10E-05
268		0.002676284
267		0.001057691
266		0.000953401
265		0.001827032
264		0.002433964
263		0.000758935
262		0.000907747
261		0.00068743
260		0.001586749
259		0.002565371
258		0.000508733
257		0.000937911
256		0.000227244
255		0.001133151
254		0.00071562
253		0.002578447
252		0.000910269
251		0.000575827
250		0.000318594
249		0.001447164
248		0.001880644
247		0.000745714
246		0.001178567
245		0.001264904
244		0.001268969
243		0.000771306
242		0.001091524
241		0.001479998
240		0.00107519
239		0.000659279
238		0.001173159
237		0.000528665
236		0.00094782
235		0.000646354
234		0.000482027
233		0.000752392
232		0.001106689
231		0.001056843
230		0.000774641
229		0.001596675
228		0.001247184
227		0.001174157
226		-0.001113272
225		0.001696789
224		0.00138846
223		0.000987787
222		-0.001330857
221		0.001451394
220		-0.000978539
219		0.001810322
218		0.001260544
217		-0.001400298
216		-0.000534182
215		0.002091427
214		0.000118345
213		0.000422562
212		-0.000918407
211		-0.00070917
210		0.000241976
209		-0.001446711
208		-0.000873593
207		-0.00076384
206		-0.000933617
205		0.001574186
204		-7.40E-05
203		0.000254347
202		-0.001268279
201		-0.001015719
200		-0.002132003

   Test Data of BPF-850BC
For more info contact us right now!
   info@accuteoptical.com
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Remark
All above test plot and data is FYI.We’re sorry if we’re unable to update them in time.
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