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光电开关的缺点之一是灯丝易断。即所谓灯的寿命比较短,所以作为无接触检测器,在可靠性方面就有问题。但是,最近由于半导体发光元件——发光二极管已能大量生产和在市场上出售,故在光电开关内已开始采用它来代替灯。这就意味着光电开关整体的寿命和可靠性将大为提高。也可以说,由于采用发光二极管,光电开关才真正起到了无接触检测器的作用。本文,将使用发光二极管的 OPE 型光电开关的概况叙述一下。
One of the disadvantages of the photoelectric switch is that the filament is easily broken. That the so-called lamp life is relatively short, so as a non-contact detector, there is a problem in terms of reliability. However, recently, as a semiconductor light-emitting element, a light-emitting diode, has been mass-produced and marketed, it has been used in photoelectric switches to replace lamps. This means that the overall life and reliability of the photoelectric switch will be greatly enhanced. It can also be said that due to the use of light-emitting diodes, photoelectric switch really played a role of contactless detector. This article, the use of light-emitting diode OPE-type photoelectric switch overview described.