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Quick Details

  • Place of Origin: Yunnan, China (Mainland)
  • Brand Name: 850nm Narrow Bandpass Filters
  • Model Number: 850nm Narrow Bandpass Filters
  • Size: square in the picture or OEM
  • Material: optical Glass(Made in Japan)
  • Use: Laser or Optical
  • 850nm Narrow Bandpass Filters: License Plate Recognition for 850nm Narrow Bandpass Filters
  • size: factory OEM
  • material: float glass
  • MOQ: 1pcs
  • Rosh: passed
  • ISO9001: passed
  • application: License Plate Recognition

Packaging & Delivery

Packaging Details Safety Packaging--850nm Narrow Bandpass Filters
Delivery Time 7 Days--850nm Narrow Bandpass Filters


License Plate Recognition for

850nm Narrow Bandpass Filters


Kunming Yulong Optical&Electronics Technology Co. has a high level technical team, which can provide you high quality coating services with long term. We have been working to improve coating film technology so that we can provide you reliable quality coating products with the lowest price due to reduce the cost. The glass main to block visible lght but transmit near-ir light centered around 850nm.


Filter Advantages: 

1) Suitable for sunlight and other bright light interference work;
2) Transmittance up to 90%, and the optical signal attenuation rate is small, effectively improve the working distance and light intensity; 
3) Can be directly coating or glue in the infrared transmittance glass by the visible light, rapidly increase the cutoff rate, the vertical incidence in strong light without penetration, light transmission rate is less than 0.2%. And to ensure that working in large angle,and short wavelength shift phenomenon reduction.
4) More than 10 years’ experience in the production of optical filter, imported coating machine to produce, IAD ion assisted deposition technology and to ensure that the low temperature drift and film firmness stronger.


    optical 850nm ir filters Specifications  :  



    optical 850nm ir filters Optical Curves    



 product application


 More About OPTOLONG's Bandpass  Filters 

Bandpass filter through a designated waves,at the same time ,cutoff other disturbing light. 

Bandpass filter types producted by OPTOLONG including long pass filter, short pass filter, laser bandpass filter, fluorescent bandpass filtermultibandpass filter and  negative filters. 

Widely applied to the field of laser, license plate recognition, vehicle wheel alignment, biochemical analysis, the CCD / CMOS digital imaging, face / iris recognition, security cameras, infrared touch screen, somatosensory games, machine vision and other high-tech optical instruments.


Bandpass Filter Specifications

Substrates: B270, BK7, JGS

Center Wavelength(CWL): 250nm-2000nm

(Ultraviolet Light,Visible Light,IR,NIR,Infrared Light)

CWL accuracy: above± 2 

FWHM: 7nm-100nm

FWHM accuracy: above± 2

Blocking range: 200nm-2200nm

Blocking depth: OD2-OD6



Thickness(mm): 0.3mm~6.3mm

Surface/Coating Quality: 60 / 40, 40 / 20

Bandpass transmittance:> 95% of the common

Edge Treatment(selectable):Mounted in Black Anodized Aluminum Ring


Advantage of OPTOLONG’s Bandpass Filters

15 years of experience in optical filters

Ion assisted deposition technique ( IAD) using

The high film layer density, high film layer firmness, high performance and stability.

A wide range of cut-off,High cut-off depth,High transmittance.

Effectively prevent stray light interference.

All filters are RoHS requirements.

OEM and ODM are welcomed!



Kunming Yulong Optical&Electronics Technology Co., Ltd. is a professional manufactures of optical coatings and optical filters processing in China. Top one Astronomical filters manufacturer in China,Third in the world.Our products include Astronomical Filter,Bandpass Filters,Edge filters, Longpass & Shortpass Filters,Beam spliters,Anti-reflective Coating,Optical Mirrors and so on.Our company were established in 1999,have five precious vacuum coating machines,a set of spectrophotometer (UV-VIS-NIR Shimadzu UV3150) which is imported from Japan.

 Core competition ability


Technical Assurance:The CEO has 25 years experience of optical filter design and manufacturing,

once worked as principal of first Chinese military optical instrument industry.

Spot Supply: Thousands of products have been manufactured each year,some products have been 

standardized,rich merchandise in stock,deeply lower the customer's sample fee and delivery circle.

Quality AssuranceRich experience in ISO9001 management system

Smooth communications: Six foreign trading sales engineer,outstanding products knowledge and communicating skills 


 Exhibition & Customer Visitation 

 Product Orientation


IRD infrared detector, car security ranging camera, lasr night-vision, night-vision for freeway, outdoors and square, infrared ink recognition, etc.



Optical Coating Products Using Tips/Notices: 

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