Home » IR800 , 800nm infrared cutoff filter for surveillance, IR photography, and machine vision

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IR800 , 800nm infrared cutoff filter for surveillance, IR photography, and machine vision

Product features

● Narrow transition zone slope less than 20nm transmission

● High transmittance over 90% or higher

● Deep cutoff depth OD2-OD3 or customized

●Multiple substrates available

●Customization supported

Product Detail

Product Descriptions：

Characteristics:	800nm IR Cut-Off Filter
Type:	Reflective type interference filter
Cut-off Wavelength(in nm):	800 nm
Average Transmittance(%) :	>92%
Optical Density (OD):	OD2
Color:	Silver
Surface Quality:	60/40 scratch-dig
Dimension(mm):	Standard for 86x86mm, 80x80mm, other can customized, max. 300x300mm
Thickness(mm):	Available: 0.21、0.3、0.55、0.7、1.0、1.1、1.5、1.8、2.0、3.0mm…etc.
Substrate:	Ultra-clear glass,K9,BK7,B270,D2637T, Quartz Glass(Fused Silica) or other specified.
Remark: Spectral range:380-1100nm

Spectral graph measurement

Picture 1: IR800nm Spectral measurement Curve

What is 800nm IR Cut-Off Filter？

An 800nm IR Cut-Off Filter refers to an optical component that allows infrared light above 800nm to pass through while blocking visible light and shorter-wavelength infrared light.

What is typical application for 800nm IR Cut-Off Filters?

The 800nm IR Cut-Off Filters find extensive application across various fields:

Security surveillance: Serves as a core component in day/night switching systems, paired with 850nm or 940nm infrared LED illuminators. At night, it allows only infrared light to reach the sensor, delivering clear black-and-white night vision imagery.
Infrared photography: Completely blocks visible light to capture pure infrared-effect images, which are typically post-processed into high-contrast black-and-white photographs.
Machine vision and sensing: Used in 3D imaging, laser ranging, facial recognition, iris recognition, and other systems. It provides the sensor with clean infrared light information and eliminates interference from ambient visible light.

What is key parameter when choose for suitable Infrared(IR) cut-off Filter?

When selecting IR cut-off filters, normally the following factors need to be taken into consideration：

Cut-off Wavelength: refers to the designated intermediated wavelength (e.g. 650nm) at transition from transmission to reflective zone, and measure at 50% transmittance.
Peak or Average Transmittance(in %): typically ≥90%, Higher transmittance might need Anti-reflective(AR) coating.
Blocking rate: usually in terms of optical density(OD), OD2-OD3 for standard and higher blocking rate will be OD4-OD6 per requirement.
Angle of Incidence (AOI): AOI need to be considered as Interference Filter is angle sensitive, 0° AOI by default, other AOI e.g. 30/45° need to be specified.
Physical and environmental requirement: Substrate type, dimensions and thickness, surface quality, and environmental durability.

Related products:

IR650 , 650nm Infrared cut-off Filter, Lens Filter, Support Customized

Shenzhen Hengda Liyuan Optoelectronics introduced advanced optical vacuum technology that apply depositing nano-materials through ion-assisted evaporation onto a multilayer hard film in a high vacuum environment which coating layer is firm and has good tightness, and small bandwidth drift. Besides, Liyuan optoelectronics have been focus on optical coating for more than 17 years ,and the company offer one-stop optical filters solution including Narrow Bandpass Filters, IR cut-off Filters, Longpass Filters, Shortpass Filters, Notch Filters, ND filters, Star filters and Optical sapphire block.

Remark: Because the interference type filter varies its performance at different angles, the spectral parameters usually determine its appearance color; moreover, the pictures in this link may originate from various shooting angles, so the actual color should therefore rely on the final spectral parameters required as the standard.