SP705 short-pass filter is specially designed to allow only light with a wavelength less than 705nm to pass through, also known as infrared cut-off filter, which can effectively block long-wave infrared light exceeding 700nm. This type of filter is widely used in optical imaging and detection systems to reduce the interference of infrared light on the image, thereby enhancing color reproduction and image clarity.
Model: SP705
Specifications: Customized
Material: Optical glass
The SP705 short-wave filter is actually an infrared cutoff filter. Its core function is to block infrared light above 705nm and only transmit visible light. This filter is specially designed to block infrared light above 705nm, effectively suppressing the passage of long-wave light and ensuring imaging quality. It has high transmittance in the visible light band to ensure natural color reproduction. At the same time, the precision coating reduces reflection and light loss, enhances durability and anti-interference performance, and can maintain optical performance under different temperatures and humidity, suitable for a variety of complex environments.
Product parameters
Working band: 400nm-1100nm
Center wavelength: 705nm
Product material: optical glass
Product thickness: 1.0-3.0mm
Glossiness: 60/40
Advantages of SP705 shortwave filter
High wavelength selectivity: It can effectively distinguish and filter out long-wave light above 705nm, enhance the system’s selectivity for the target spectrum, and improve the accuracy of imaging and detection.
Enhance image clarity: The shortwave pass characteristic effectively blocks infrared interference light, improves image contrast and sharpness, and reduces color distortion.
Applicable to a variety of equipment: From biological imaging, medical detection to machine vision, the SP705 filter can adapt to a variety of equipment and detection needs, and is an important component in a variety of optical systems.
Stable performance: Using high-quality optical materials and coating technology, the SP705 filter has stable optical performance, is suitable for long-term working environments, and has the characteristics of resistance to high temperature and high humidity.
Application areas
Fluorescence microscope:
In fluorescence microscopy, the SP705 short-wave filter can filter out long-wave infrared light, ensuring that the excitation light is mainly concentrated in the visible light range, thereby improving the contrast of the fluorescence signal and the clarity of the image.
Machine vision:
In industrial automation and machine vision applications, the SP705 filter is used to isolate long-wave infrared light, reduce light pollution and stray light interference, and improve the recognition accuracy and stability of the visual inspection system.
Biomedical testing:
In medical applications such as biological sample testing and cell analysis, short-wave filters help provide excitation light of a specific wavelength to improve the purity of the sample signal, thereby making the test results more accurate.
Digital imaging and photography:
In digital cameras or professional photography equipment, the SP705 filter can block long-wave infrared light from entering the sensor, prevent image blur or color deviation caused by infrared rays, and improve the color reproduction of photos.
Spectral analysis and chemical testing: In spectral analysis equipment, the SP705 filter is used to block infrared light above 705nm, ensuring that the analytical instrument works accurately within a specific band, which is suitable for spectral analysis of chemical composition, material structure, etc.
SP705 short wave filter transmittance wavelength characteristics
