双向照度数字测光仪

Bilimit Illumination Photometer

双向照度数字测光仪是一种数字测光表，它采用光敏元件（ＳＰＤ等），ＣＭＯＳ数字集成电路、语音集成电路、Ａ／Ｄ转换器以及ＬＣＤ液晶显示器等组成，对光照度进行声光及数字处理．能在一个大照度范围指示光照度正常，当光照度低于该照度范围的下限（低照度）或高于该照度范围的上限（强照度）时，电路能自动发出光照度过弱或过强的声光提示以及ＬＣＤ数字照度显示．且电路能自动作出相应的指令控制信号．解决了目前照度计（或测光表）不能解决的大照度（０～２００００Ｌｘ）连续测光以及双向（强、弱）照度数字监控。

Bilimit illumination photometer is an date photometer, it is made up fo Siphotodiode (SPD), CMOS digital integrated circuit and language-music integrated circuit, analog digital converter (A/D) and lighid crysal display (LCD). The photometer measare light in date processing, it conform to wide standard illumination range when illuminance rise above the high limit of the illumination range or go down the low limit of is, the cincuit make a show of sound and light and ciguid crystal date display. And also it auto matically controll flash-circuit in low illumination. So it conform to the wide illumination range of from zero to 20000Lx and dilimit illumination date measuring.