A 700nm IR Cut-Off Optical Shortpass Filter is engineered to transmit visible light while blocking infrared (IR) wavelengths beyond 700 nanometers (nm). This filter is commonly used in optical systems where it’s essential to prevent infrared light from reaching the sensor or detector, ensuring that only visible light is captured for imaging or measurement.

Coligh’s stock standard 650nm IR cut filter:

• Type: IR cut off filter
• Angle of incidence: 0°
• Wavelength cut off : 700m+/-5nm
• Working wavelength: 400-680nm@Tave>95% & Tmax<2% 7300-1100nm
• Thickness: 1.0mm, 1.1mm, 0.55mm, 0.7mm
• Surface quality: 80/50, 60/40
• Size: smaller than 100*100mm

Custom option:

• Cut on and cut off wavelength: custom
• Working wavelength: according to client’s request
• Material and thickness: according to client’s request
• Surface quality: 40/20 20/10is in option
• Size: Any size round or square smaller than 100*100mm

Key features of the 700nm IR Cut-Off Shortpass Filter:

• Cut-Off Wavelength: 700 nm – The filter effectively blocks wavelengths greater than 700 nm, allowing visible light below this range to pass through.
• Transmission Range: High transmission of visible light below 700 nm, ensuring clarity and brightness in the visible spectrum.
• Blocking Range: Strong attenuation of infrared (IR) wavelengths above 700 nm, reducing interference from unwanted IR radiation.
• Steep Transition: The filter exhibits a sharp transition between the transmission of visible light and the blocking of IR light, ensuring precise separation of the two spectral regions.
• Coating: Typically comes with advanced coatings like anti-reflective or dielectric coatings to enhance durability, reduce reflections, and maintain high transmission in the visible range.

Applications:

• Cameras and Imaging Sensors: Prevents IR light from reaching the sensor, which could otherwise distort color accuracy or create unwanted glare in the image.
• Photography: Ensures natural color reproduction by blocking IR light that cameras may otherwise capture.
• Display Technology: Improves the accuracy of light detection in optical systems by cutting off IR.
• Machine Vision: Enhances image quality by preventing IR interference in vision systems, allowing more accurate detection and analysis of objects.