LTR-4206

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Introduction

The LTR-4206 is a light transmissive sensing device manufactured by Opto Corporation. It is an optical sensor that employs phototransistors as its detection element. It is available in both analog and digital versions for various applications, including robotics, instrumentation and automotive. The light transmittance of the LTR-4206 can be tailored according to specific applications. Its small size, low power consumption and fast response time make it suitable for small-scale use.

Application Fields

The LTR-4206 is designed for transmissive detection of light, which makes it a good choice for various applications. It can be used for monitoring the presence or absence of light, enabling the utilization of the device in switching applications. For example, it could be used as an optical interlock switch in robotics for detecting the presence of an object or a person. It could be used to determine the position and orientation of objects for precision control. Applications in monitoring and control of light levels, e.g. for energy savings in building lighting systems, are possible with this device.

The LTR-4206 has also been used for detection of fluid levels in tanks, automation of assembly lines, level control in process control systems, and presence detection in paint shops. In addition, it has been found to be helpful in lighted doorbells, burglar alarms, and vehicle security systems. As the light transmittance of the device can be tailored according to specific applications, it is suitable for working in challenging environments such as those that are wet, dusty or filled with smoke. Furthermore, with its small size, low power consumption and fast response time, the LTR-4206 is well-suited for numerous applications.

Working Principle

The working principle behind the LTR-4206 is based on optical detection. The device has two LEDs (light-emitting diodes), one at the top and one at the bottom, and two phototransistors facing each other. When there is no object between the two phototransistors, the LED emits light, which then is equally split by the two phototransistors. However, when an object is present between the two phototransistors, the LED light is blocked and the phototransistors will not produce an output. This allows the sensor to detect the presence or absence of an object even in the presence of high ambient light.

The light transmittance of the LTR-4206 can be adjusted with its adjustable slits, which breaks the total reflected light from the object into two segments that then get picked up by the phototransistors. Therefore, the size of the object being tested can be determined accurately. Additionally, the light intensity can be adjusted with the built-in level attenuator.

Conclusion

In conclusion, the LTR-4206 is an optical sensor that employs phototransistors for detection and is designed for transmissive detection of light. It is small, low power consuming and has a fast response time, making it a suitable choice for a variety of applications. The light transmittance of the LTR-4206 can be adjusted with adjustable slits and the level attenuator, allowing it to detect a wide range of objects. With its numerous application fields and working principle, the LTR-4206 is an excellent option for various applications requiring optical sensing.

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