Illumination sensor with excellent spectral sensitivity characteristics

     ROHM Corporation has successfully developed LSI BH1600FVC (analog output type) and BH1710FVC (digital output type), which have excellent spectral sensitivity for portable devices such as mobile phones and LCD TVS. The BH1600FVC and BH1710FVC will be put into mass production at a monthly output of 1 million and 2 million, respectively. The initial production process will be carried out in ROHM APOLO DEVICE (Fukuoka Prefecture, Japan), and the later production process will be completed in ROHM Fukuoka.

     Liquid crystal displays such as mobile phones, LCD TVS, and laptops need to adjust their brightness according to the brightness of the surrounding environment to achieve energy saving and improve clarity. In order to maximize its effect, fine brightness management is very necessary. However, all the time, the measurement results of the brightness sensor will be different because of the difference in the actual human feeling, as well as the change of the light source such as large sunlight and lighting light.

     The illumination sensor LSI BH1600FVC/BH1710FVC developed by ROHM has excellent spectral sensitivity characteristics, which is similar to human visual sensing in the dark or in direct sunlight, and can be measured in a wide range of brightness. More through the unique image IC technology, so that has been in the same brightness conditions according to the fluorescent lamp or incandescent lamp and other light source types will produce 300% sensitivity difference to reach only 10% sensitivity difference, to achieve stable operation. In order to further meet the needs of customers, we have prepared two types of analog output/digital output, which can fully correspond to the needs of customers.

     The analog output mode (BH1600FVC) is the industry's first component that can adjust the current output Gain in 2 stages and simultaneously operate at low voltage. In addition, the digital output illumination sensor LSI BH1710FV, with A built-in 16b A/D converter, can perform a wide range of brightness 1 lux of high precision measurement, the industry's first direct output of illumination digital values. This also means that it is possible to omit the external calculus that has always been necessary.