Stocker & Yale Inc. has released two high-frequency fluorescent ringlights for machine vision applications. The 25-kHz model 5 and Superlite model 18S are housed in a black anodized aluminum housing with industry-standard threaded holes for mounting. The model 5 is a small-footprint lamp with a 0.984-in. bore and a 5100 K fluorescent lamp. The Superlite model has a 4-in. bore and a 6500 K fluorescent light.