IR700, 700nm infrared cut-off Filter, optical short pass filter

Product features

● High Visible Light Transmittance

● Deep Infrared Blocking

●High Environmental Stability

● Multiple substrates available

● Advanced Coating Technology

Product Detail

Product Descriptions：

Characteristics:	700nm IR Cut-Off Filter
Type:	Interference type filter
Cut-off Wavelength(in nm):	700 nm
Average Transmittance(%) :	>92%
Optical Density (OD):	OD2-OD3
Color:	Green
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

Measured Spectral measurement

Picture 1: IR700nm Spectral measurement

What is 700nm IR Cut-Off Filter？

700nm IR Cut-Off Filter is an optical component specifically designed for precise infrared light control. Its core function is to accurately block near-infrared light with wavelengths longer than 700nm, while efficiently transmitting visible light in the 400-700nm range.

What is typical application for 700nm IR Cut-Off Filters?

700nm IR Cut-Off Filters find extensive application across various fields:

Consumer electronics, camera modules in smartphones and other devices incorporate these filters to ensure natural color reproduction in photos.
In security monitoring, it work alongside an IR-CUT switcher to produce color images during the day and allow full infrared transmission at night for black-and-white night vision.
In machine vision, industrial inspection systems utilize these filters to eliminate infrared interference and improve detection accuracy.
In the medical and life sciences, fluorescence microscopes and similar instruments rely on these filters to ensure that images are based on authentic visible light signals.
In automotive electronics, in-car cameras use these filters to adapt to changing light conditions, thereby enhancing the reliability of autonomous driving perception.

What is key parameter when choose for suitable 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.