Optimal Performance & Repeatability
When choosing a machine vision filter, it’s important to select one with exceptional optical quality. With the advances in sensor technology and camera resolution, there’s an increased demand for distortion-free filters. All MidOpt bandpass filters are double-side polished to achieve optimal flatness.
Surface quality is also important for optimal image results. MidOpt filters are near-flawless and exceed the industry surface inspection standard with a 40/20 scratch/dig ratio. (Most manufacturers follow 50/80 scratch/dig criteria.) And in applications where the filter is placed in front of the sensor—where imperfections are most pronounced—MidOpt offers a 10/5 standard.
To ensure optimal quality and repeatability, every filter is examined using state-of-the-art spectrophotometer technology. Each filter must pass strict guidelines for proper transmission, full-width half-max and out-of-band blocking.