Preface


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Preface
PrefaceThe earliest I can recall an interest in optical detection was sometime around 1960. It was a project for an optically controlled model boat. All I can remember was that it used a handheld flashlight as transmitter and a light-dependent resistor on the model as receiver. Some rudimentary relay electronics taken from radio control provided the logic and memory to turn the boat on command, left, right, or straight ahead. I seem to remember it required some dexterity in flashing the light for about the right pulse-width to make it all work. I was desperate to make this, but with electronics knowledge limited to wiring batteries and bulbs, it was a hopeless endeavor.Three years …
Citation
Mark Johnson: Photodetection and Measurement: Maximizing Performance in Optical Systems. Preface, Chapter (McGraw-Hill Professional, 2003), AccessEngineering Export