Optical Filters
Machine Vision means letting a machine become capable of measuring or recognizing the image it takes, just like human eyes can see objects and distinguish them. Machine vision has great prospects in various fields including automatic driving, safety monitoring, intelligence traffic, automatic facilities, etc. A machine vision system consists of an image-acquiring section, an image-analyzing section, and an action-implementing section. Machine Vision Filters are applied in the image-acquiring section. Machine Vision Filters encompass a diverse range of optical filters designed to modulate the characteristics of light entering a machine vision system. These filters operate by transmitting or blocking specific wavelengths of light through absorption or interference, shaping the spectral composition of the captured images. Machine Vision Filters functions to increase contrast in imaging, and control the brightness of the image, correct color rendition, block unwanted illumination and glare, or bring down the brightness of image without changing the exposure time or adjusting the f/#. By strategically filtering out unwanted wavelengths and enhancing the contrast of features of interest, machine vision filters enable more accurate and reliable analysis of visual data.
Hangzhou Shalom EO launched the research of machine vision filters in 2006 and gained prosperous results. We have developed 850nm, and 940nm ultra-thin narrowband pass filters for human face identification, 780nm narrowband pass filters for sweeping robots, and 905nm and 1550nm narrowband pass filters for unmanned vehicles. We offer standard and custom machine vision filters for integration into a range of applications. Regarding the standard filters, we offer a large stock of Bandpass Filters. Regarding the custom filters, we provide various filter types, including Shortpass Filters, Longpass Filters, Neutral Density Filters, and Color filters. The Shortpass Machine Vision Filters and Longpass Machine Vision Filters feature sharp spectral cut-on and cut-off, providing excellent imaging contrast for color imaging to achieve natural color rendering, the short pass filters, in particular, are exceptional for blocking infrared saturation, while Longpass Optical Filters feature an extensive selectable range of operation wavelengths. Neutral Density (ND) Filters can be stacked to increase optical density, decreasing overall light throughput. Colored glass Filters are ideal for use with monochrome cameras to increase contrast and resolution. The machine vision filters are available in mounted version for ease of integration into imaging lenses.
