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Computer-controlled RGB LED Illuminator for Upright Microscopes

Available from TOFRA, Inc.

The RGB LED Light Source provides bright and uniform microscope illumination. Independent and accurate control of red, green and blue LEDs creates any desired color and intensity. Color images can be produced from monochrome cameras giving full non-interpolated color at every pixel. The light source head mounts instead of condenser on upright microscopes. The light source controller connects to the computer serial port, or to the USB port through USB-to-RS232 converter.
Wavelengths are 619 nm for red, 515 nm for green, and 465 nm for blue. Switching time is less than 1 ms. At maximal light intensity required exposure time in each color for typical CCD cameras is between 0.5 and 5 ms. (with a 10X objective). The standard head has illuminated area of 12.5 mm in diameter. For low-magnification objectives a special head with 25 mm in diameter can be provided. Software for interactive control and for automation from other applications is provided, as well as examples of direct control through serial port. The unit does not create any vibration or noise. It has low heat emission, low thermal drift, and low temperature gradient; it can be always on.

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