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Lenoptec Co., Ltd
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Home > Filters > Bandpass Filters > Double Bandpass Filters

Bandpass Filters (4 Total)


	650+940nm Narrow Double Bandpass Filter High transmission at the CWL, from 80% ~ 95% according to the bandwidth. Precise point of the CWL, with Ion source assisted coating method to reach a steady coatings. Singlet substrate with coatings.


	850nm Day Night Filter or 850nm IR Filter 850nm Day Night Filter is a common filter used for day night imaging systems, usually for CCD sensor, which is sensitive for a wide spectrum for image forming.


	940nm Day Night Filter One filter for day and night surveillance by blocking most UV light and NIR light. FWHM at the centre 940nm can be chosen, such as +/-15nm, +/-20nm or +/-30nm.


	490+660nm Double Bandpass Filter Double Bandpass filters are designed with 2 area transmission, while all other spectrums blocked or reflected. Different areas could be designed for vary equipments or applications


	650nm UV-IR Cutoff Filter, heat blocker Cutoff all UV and NIR light but only transmit visible light to for the clearer color image. With AR coatings, Transmission can reach Tave>95%


	680nm UV-IR Cutoff Filter, heat blocker With AR coatings, Transmission can reach Tave>96%. Heat blocker to resist high temperature at no more than 350 C-degree


	Heat Resistance Filter, Heat Blocker NIR cutoff from 720-2500nm, reduce the most heat from NIR light. UV light could be blocked or transmit. Effective to block the major NIR heat from sunlight and halogen lamps.


	635nm UV-IR Cut Filter, Heat Blocker UV-IR cut off and visible red light cutoff Applied for industrial camera or optical system, mobile camera, and digital microscope etc.


	710nm UV-IR Cut Filter, Heat Blocker Full visible light transmission, especially the visible red color light, so more temperature blocked. All UV-IR light has been cutoff, suitable for color image camera use.


	440nm +/-20nm Visible Narrow Bandpass Filter, Blue Filter Singlet filter with coatings. Only allow the visible blue range spectrum transmit, while deeply cut off the other spectrums, also called Blue Narrow Bandpass Filter or Blue interference filter.


	Laser Scanner Filter, 650+/-25nm Narrow Bandpass Filter Designed for 640nm, 647nm and special 650nm laser scanner or laser semiconductor use. Singlet piece, not bonded, can be bonded with other filters for some special applications.


	Laser Scanner Filter, 632+/-15nm Narrow Bandpass Filter Specially designed for special 632nm laser scanner or laser semiconductor use. Singlet piece, not bonded, can be bonded with other filters for some special applications.


	Visible Light Color Filters, Interference Filters Different CWL with customized transmission bandwidth for the visible color light beam Pure light color acquired while reflect other color light from sunlight or other white light.


	Bandpass Filters in Visible Light Spectrum Different CWL and bandwidth can be customized for vary application or requirements. Singlet or bonded with other filters


	650nm Laser Scanner Filter, High Transmission 650+/-20nm Bandpass Filters New Developed 650nm FWHM=40nm filters, with high transmission of T>95% @ CWL=650+/-5nm area. Perfectly used for laser devices.


	850nm High Temperature Resistance Narrow Bandpass Filter-No Temperature Drift No temperature drift of the spectrum curve when the temperature rise, specially designed for narrow bandpass filter to work under high temperature environment.


	Narrow Bandpass Filter, Interference Filter Narrow Bandpass Filter is a kind of filter, which only transmit a small bandwidth of spectrum, but block all others, used for vary different applications which only required a certain range of light.


	1064nm Narrow Bandpass Laser Filter, Interference Filter 1064nm Narrow Bandpass Filter, only transmit the small bandwidth spectrum as 1064+/-10nm, or 1064+/-15nm, while all other light has been blocked or reflected.


	940nm Narrow Bandpass Filter, Interference Filter compatibly used with 940nm LED light or laser light source, which the image sensor only requires a small bandwidth of the 940nm NIR light to for the black and white image. Vary applications or equipments require different bandwidth, from +/-5nm, +/-15nm to +/-30nm.


	850nm Narrow Bandpass Filter, Interference Filter Compatibly used with 850nm LED light or laser light source, which the image sensor only requires a small bandwidth of the 850nm NIR light to for the black and white image. The 850nm bandpass filter is commonly used in NIR imaging system to eliminate the influence of surrounding background light.


	880nm Narrow Bandpass Filter, Interference Filter Different bandwidth designed for vary application. Ion source assisted coating to reach a heat resistance.


	632+/-10nm Narrow Laser Interference Filter 632+/-10nm (FWHM=20nm) very narrow laser interference filter, designed with Tave>75% @ 628~636nm area, with sharp slope curve. This filter has deeply cutoff all other spectrums unneeded to get a most pure laser light.


	780+/-20nm Narrow Bandpass Laser Interference Filter 780nm Narrow Bandpass Interference Filter, only transmit the small bandwidth as 780+/-20nm (FWHM=40nm) spectrum, while all other light has been blocked or reflected. Specially designed for 766, 780, 785 or 790nm LED or Laser light source.


	808nm Interference Filter, 808nm Laser bandpass Filter 808nm FWHM=24nm Laser Interference Filter is specially designed for optical devices equiped with 808nm semiconductor light source, with hight transmission at T>85%.


	635+/-15nm Laser Semiconductor Filters, Laser Interference Filters 635nm Laser Filter, designed for the applications of 635nm laser semiconductor devices. With higher transmission and sharp curve, allows the sensor detect more require light beam, while block other noise light as more as possible.


	650+/-15nm Narrow Bandpass Filter, 650nm Interference Filter Used for 650nm LED light source. The more narrow bandwidth is designed to reduce more unneeded light for sensitive sensors.

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