Narrow band filter

An optical lens that suppresses light sources, sensors, and natural light and separates a specific monochromatic spectrum. Narrowband filters are filters that relatively cut off interference light and pass through specific wavelengths, with selective light transmission. The advantage of narrowband filters produced by Liwan Optics lies in its greater focus on customer application areas and the customization of the best cost-effective narrowband filters. Widely used in semiconductor lasers, surveillance cameras, sensor packaging, medical instruments, and fluorescence microscopes.In addition, we can also customize related products according to customer needs


Description

Application:

Application

Wavelength(nm)

Transmittance(%)

Bandwidth

Cutoff   depth

Model

Semiconductor   packaging

635nm

635±5nm@≥90%

35nm

350-1100nm@T<0.01%

LW-NBP-635-35

Laser   range finder

905nm

905±5nm@>90%

20nm

350-1100nm@T<0.01%

LW-NBP-905-20

Barcode   scanning

650nm

650±8nm@>90%

50nm

350-1100nm@T<0.01%

LW-NBP-650-50

Fingerprint   identification

530nm

530±3nm@>90%

25nm

350-1100nm@T<0.01%

LW-NBP-530-25

Biometric   recognition

850nm

850±3nm@>80%

20nm

350-1100nm@T<0.01%

LW-NBP-850-20

Criminal   investigation light source

450nm

450±3nm@>80%

20nm

350-1100nm@T<0.01%

LW-NBP-550-20

Four   wheel alignment instrument

940nm

940±5nm@>85%

35nm

350-1100nm@T<0.01%

LW-NBP-940-35

Electronic   whiteboard

808nm

808±3nm@>85%

40nm

350-1100nm@T<0.01%

LW-NBP-808-40

Product parameters:

Narrow   band filter

Process   method

IAD   dielectric hard film, combined filter

Peak   Transmittance

95%,90%,85%,80%,70%,60%,50%,40%,30%,20%,10%

Half   peak bandwidth

FWHM=8nm,10nm,   15nm,20nm, 25nm,30nm, 35nm,40nm

Surface   finish

40-20   60-40

Optical   aperture

95%

Cut-off   depth

OD2,OD3,OD4,0D5,OD6

Product   thickness

0.3mm,0.55mm,0.7mm,1.0mm,1.1mm,2.0mm,3.0mm,4.0mm

Cutoff   band

200nm~λ~1100nm

Environmental   testing

MIL-STD-810F

Material

Optical   grade glass (K9, BK7, B270, D263T, quartz glass, colored glass, etc.)

Circular   size

Ø3mm-Ø110mm

Square   size

2mm*2mm-146mm*146mm


Spectral schematic diagram: