American Optical 1036A Microscope Illuminator

The American Optical 1036A Spencer Microscope Illuminator, paired with the 1051 Transformer, is a vintage AO substage illumination module designed for AO Spencer Series 10 microscopes that provides transmitted light through a dedicated mirror and light path. The 1051 Transformer Assembly powers the lamp (AO documentation notes a 6.5-volt lamp) and includes a rotary dimming control, a pilot indicator, and a cord-and-receptacle for integration with the microscope's power system. The illuminator assembly is cataloged as 1036-800 and includes the mirror and bracket assembly, with components such as 1036-604 mirror and 1036-14 mount for the mirror and 1036-5 cover. This setup is commonly encountered on the used market for AO Spencer teaching and research instruments and requires the 1051 transformer to complete the power circuit.