455nm-980nm Visible To Near Infrared Short Wave Pass Edgepass Filters Overview

455nm-980nm Visible To Near Infrared Short Wave Pass Edgepass Filters are short-wave pass edgepass filters covering multiple wavelengths from 455nm in the visible light spectrum to 980nm in the near-infrared spectrum. We use ion-assisted hard deposition technology to deposit thin film materials of different refractive indices on substrates such as B270, Corning glass, and fused silica. They are transparent in the short-wavelength direction and cut off in the long-wavelength direction. Their transmittance changes very drastically near specific wavelengths, rapidly transitioning from high transmittance to high blocking.

They are mainly used in applications such as fluorescence microscopy, spectral analysis, and machine vision. Coligh’s short-wave pass edgepass filters feature high transmittance, high contrast, deep cutoff, and steep edges. We currently have various types in stock; please see the inventory list.

The Characteristic Of 455nm-980nm Visible To Near Infrared Short Wave Pass Edgepass Filters

We specialize in manufacturing short-pass filters, offering a variety of standard cutoff wavelengths from 455nm visible light to 980nm near-infrared. Their filters feature:

• A wide range of cutoff wavelengths are currently in stock, with 50% precisely controllable cutoff point and tolerances within +/-3nm.
• Transmittance remains at least 90% within the passband, providing excellent passband transmittance.
• Cutoff depth reaches OD3-OD6 within the stopband, effectively suppressing stray light and background noise, and improving image contrast.
• We employ a hard-coating process, ensuring scratch and corrosion resistance, guaranteeing spectral stability over long-term use.

Custom Capability Of Visible To Near Infrared Short Wave pass Edgepass Filter

We currently offer a full line of UV bandpass filters, covering the entire 200-400nm UV wavelength range. Custom options include:

• Cut-off wavelength range: 230-395nm
• Typical Transmission: >=90%
• Standard blocking depth: OD2 OD3 OD4 OD5 OD6
• Standard angle of incidence: 0+/-5 degrees, we can also customize according to client’s request
• Material: Normal optical glass, fused silica
• Sizes up to 80*80mm

455nm-980nm Visible To Near Infrared Short Wave Pass Edgepass Filters Stock List

455nm-980nm Visible To Near Infrared Short Wave Pass Edgepass Filters Applications

• Fluorescence Microscopy
  In fluorescence experiments, a short-pass edge filter is placed between the sample and the detector, allowing the target fluorescence signal to pass through efficiently while blocking residual reflected light from the excitation light and near-infrared noise. This helps fluorescence microscopes obtain clearer and more realistic fluorescence images.
• Machine Vision
  Sensors such as CMS/CCDs are sensitive to both visible and near-infrared light. In natural light or other lighting conditions, infrared light can cause color distortion and decreased contrast. A visible-to-near-infrared short-pass filter helps sensors obtain more accurate and clear images under varying lighting conditions.
• Medical Equipment
  Medical devices such as pulse oximeters and skin analyzers require the absorption and reflection of different wavelengths of light by human tissue to determine physiological parameters. Therefore, it is necessary to separate visible and near-infrared light. A short-pass edge filter ensures that the detector only accepts specific wavelengths and bands while blocking signal contamination from other bands. This reduces interference from ambient light or other light sources, ensuring minimal measurement error.