Request InfoMarshall Electronics Inc., Optical SystemsMarshall Electronics’ Optical Systems Div. has released two 323-mm zoom pinhole lenses to monitor hot environments from a greater distance to protect cameras from heat-related damage. The V-ZPL-HITEMP-A-323 has a 1.2-mm pinhole diameter, and the V-ZPL-HITEMP-B-323, a 3.8-mm pinhole diameter. They are suitable for industrial applications where an observation window is structurally recessed. They can be positioned at the window, where the temperature is the hottest, and the camera can be located at a distance of 323 mm, allowing space for camera cooling equipment. 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