Technical Articles

Light in Motion LLC has published these technical articles:

(Optoelectronics)
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Among all the possible applications using LEDs, those where the optical power is set high continuously over long periods of time are challenging in terms of stability over time. For instance, object...
(Optoelectronics)
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Most of the Opto devices sensor devices on the market are designed with analog outputs (photodiodes, phototransistors) that requires an analog to digital conversion to interface with the application....
(Optoelectronics)
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The design of an Optoelectric interrupter rests on two functions. The electro-optical function and the transport and delivery of the light...
(Optoelectronics)
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A photoelectric system uses visible or infrared light to perform a variety of functions in both industrial and commercial applications, such as measuring distance or detecting the presence or absence...
(Optoelectronics)
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In this webinar, we will analyze the reasons that made Photoelectric Sensors prominent, look at the evolution of the enabling technologies starting with the LED, how that has made Photoelectric...
(Optoelectronics)
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The QVE01040 phototransistor optical interrupter switch, consists of an infrared LED emitter that is optically coupled to a phototransistor detector through a 0.3 mm aperture on both sides. The...
(Optoelectronics)
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The use of optical sensors to replace mechanical switches is an important feature of today's automation techniques. The mechanical switch is prone to failure after a relatively short operating life....
(Optoelectronics)
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There is no absolute answer to this question. It depends much on the application. In most cases, by pulsing the emitter with a high drive current and using a sensitive photosensor, such as a...
(Proximity or Presence Sensing)
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DC Motor Speed Control Circuit using a Phototransistor Optical Interrupter Switch: These controls may be of the open loop type, where light just provides a no-contact, non-wearing circuit input from a...
(Optoelectronics)
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The IR LED emitter is commonly continuously powered, forcing a constant DC current through the LED. The LED is connected to the DC supply via current limiting resistor. Equation included in piece....
(Optoelectronics)
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The basic structure of the photodiode is a reverse biased PN junction. When light of the proper wavelength is directed toward the junction, hole electron pairs are created and swept across the...
(Optoelectronics)
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The common-emitter amplifier circuit (Fig. 1) generates an output which transitions from a high state to a low state when light in the near-infrared range is detected by the phototransistor. The...
(Optoelectronics)
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This note lists and answers common technical questions about the operation of Light in Motion's IR hermetic components....
(Optoelectronics)
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Random Position Object Sensing refers to applications where the goal is to either detect the presence of an "object" in an open delimited space or count the number of objects travelling through a...
(Optoelectronics)
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This article describes how to design a circuit that controls the UVC light intensity in disinfection and sanitizing systems. This intensity must remain above a predetermined threshold to guarantee the...
(Proximity or Presence Sensing)
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This article discusses the benefits of using an advanced Optical Interrupter for Motor Control...