Maxoptics.cn
BandPass filter in China

BandPass optical filters

Bandpass filters only allow the passage of light within a specific wavelength spectrum while blocking the spectra on both sides of the passband. According to the wavelength range, they are divided into ultraviolet bandpass filters, visible/near-infrared bandpass filters, and mid-to-far-infrared bandpass filters. According to spectral bandwidth (FWHM), they can be divided into ultra-narrow band filters (SNBPF), narrow band filters (NBPF), bandpass filters (BP), and wide bandpass filters (WBP). Applications: biomedical detection, optical instruments, infrared gas analysis, etc.

Products

BP/NBPF by wavelength

BP-405-20-D12.7

Center WaveLength:405±2nm FWHM of 20±2nm Tpeak > 70% Blocking:200-1200@OD4

BP-405-20-D12.7

BP-460-40-D12.7

Center WaveLength:460±4nm FWHM of 40±4nm Tpeak > 85% Blocking:200-1200@OD4

BP-460-40-D12.7

BP-470-30-D12.7

Center WaveLength:470±2nm FWHM of 30±2nm Tpeak > 85% Blocking:200-1200@OD4

BP-470-30-D12.7

BP-485-20-D12.7

Center WaveLength:485±2nm FWHM of 20±2nm Tpeak > 85% Blocking:200-1200@OD4

BP-485-20-D12.7

BP-530-30-D12.7

Center WaveLength:530±2nm FWHM of 30±2nm Tpeak > 85% Blocking:200-1200@OD4

BP-530-30-D12.7

BP-535-40-D12.7

Center WaveLength:535±3nm FWHM of 40±3nm Tpeak > 85% Blocking:200-1200@OD4

BP-535-40-D12.7

BP-570-30-D12.7

Center WaveLength:570±2nm FWHM of 30±2nm Tpeak > 85% Blocking:200-1200@OD4

BP-570-30-D12.7

BP-615-30-D12.7

Center WaveLength:615±2nm FWHM of 30±2nm Tpeak > 85% Blocking:200-1200@OD4

BP-615-30-D12.7

BP-620-40-D12.7

Center WaveLength:620±4nm FWHM of 40±4nm Tpeak > 90% Blocking:200-1200@OD4

BP-620-40-D12.7

BP-630-30-D12.7

Center WaveLength:630±2nm FWHM of 30±3nm Tpeak > 85% Blocking:200-1200@OD4

BP-630-30-D12.7

About Bandpass filters

Bandpass filters are made by Ion-Assisted Deposition (IAD) or Ion Beam Sputtering (IBS) coating technology (excluding UV and IR bands). The film structure is strong and dense, and the working wavelength is stable, making it suitable for use in complex environments such as indoors and outdoors. According to the working wavelength, they can be divided into UV bandpass filters, visible light bandpass filters, near-infrared bandpass filters, and mid-to-far-infrared bandpass filters. According to the number of passbands, they can be classified into single-bandpass filters, dual-bandpass filters, and multi-bandpass filters. We select suitable coating materials, coating processes, film system designs, and film thickness monitoring schemes according to comprehensive factors such as the working wavelength of the bandpass filter, spectral bandwidth, angle of incidence, and background suppression to customize products that meet customer requirements. A considerable number of bandpass filters are also available in stock, and we welcome inquiries.


The company has a team with extensive experience in optical processing and optical coating technology, capable of completing the entire process from sample development to mass production. We provide free technical consultation and product performance and mass production feasibility evaluation. Applications: Biomedicine, spectral analysis, security monitoring, LIDAR, remote sensing, fiber optic communications, and other scenarios.