Home » 760nm Shortpass Filter for machine vision, fluorescence spectroscopy, Raman spectroscopy, medical devices, and stage lighting, Support customized

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760nm Shortpass Filter for machine vision, fluorescence spectroscopy, Raman spectroscopy, medical devices, and stage lighting, Support customized

Product features

● Narrow transition zone slope less than 20nm transmission

● High transmittance over 90% or higher

● Deep cutoff depth OD2-OD6 or customized

● Widely used for optical lens, camera, laser sensing

Product Detail

Product Descriptions：

Characteristics:	760nm Shortpass Filter
Type:	Interference type filter
Cut-off Wavelength(in nm):	760 nm
Average Transmittance(%) :	>90%
Optical Density (OD):	OD2-OD3
Color:	Transparent
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: 760nm Shortpass Filter Spectral measurement

What is typical application for 760nm Shortpass filters?

A 760nm shortpass filter is an optical component that transmits light with wavelengths shorter than 760nm and blocks light with wavelengths longer than 760nm. Typical applications of 760nm shortpass filter:

Imaging & Machine Vision: Simulates human visual perception by filtering out near-infrared light to prevent CMOS/CCD image color distortion, delivering true-to-life colors. Used in high-end industrial vision, 3D measurement, traffic monitoring, and security/surveillance to eliminate interference light, enhance imaging clarity and system sensitivity, and enable precise detection and identification.
Fluorescence Excitation Spectroscopy: Serves as a purification element in the excitation light path, ensuring that only the required short-wave excitation light reaches the sample while blocking long-wave stray light, thereby improving signal-to-noise ratio and detection accuracy.
Raman Spectroscopy: Filters out low-frequency noise from the excitation light and Rayleigh scattering, allowing only the weak Raman signal to pass through.
Medical & Biotechnology: Used in medical diagnostic instruments, iris/facial recognition systems, and aesthetic devices to isolate unnecessary infrared light or extract effective therapeutic light.
Stage & Lighting: Extracts pure short-wave color components from white light to achieve specific lighting effects.

What is key parameter when choose for suitable shortpass filters?

When selecting shortpass 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:

810nm Shortpass 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.