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Position
Sensitive Detectors |
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其他探测器
PSD是一种连续的模拟式光斑位置检测器件,其原理是利用光照情况下光电二极管表面阻抗的变化来检测光斑的位置。和CCD等非连续(分割式)探测器相比,PSD的位置分辨率较高。PSD器件有一维的和二维的,二维的当中还分表面分割型和两面分割型,后者的分辨率更高。PSD主要用在相机的自动对焦,光学测量等领域。具体有一维PSD,二维PSD,以及PSD信号处理电路等 一维/二维传感器 光电二极管阵列： 有一维的线阵和二维的面阵。光电二极管阵列多用于分析测试领域,感光象素之间性能一致稳定,象素间信号干扰小。
Provides a variety of one-dimensional PSD (Position Sensitive Detector) designed for precision distance measurement. They are used in displacement meters, proximity sensing, as part of a camera's autofocus mechanism and in optical micrometers for high resolution, non-contact measurements.
Two-dimensional Position Sensitive Detectors (PSDs) provide continuous position data on both the X and Y axis and feature high position resolution. They are classified by structure into duo-lateral, tetra-lateral and pin-cushion types. The pin-cushion type has superior position detection ability, such as higher resolution and accuracy. Two- dimensional PSDs can be used for laser beam alignment and object tracking such as monitoring eye movement.
A number of products can serve the same function as a PSD (Position Sensitive Detector), but do not fit into the same general category. These include discrete PSD arrays, devices that can switch from being a photodiode to a PSD, non-linear output PSDs and PSD angle sensors. Various types of signal processing boards are available for the tracking of a light spot independent of incident light intensity. Boards are available for one or two-dimensional and either pin-cushion, tetra-lateral or duo-lateral PSDs. The signal processing boards are a compact size and easy to use, no complicated adjustments required. Measurements can be made by simply connecting the PSD and a +15V power supply. |
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