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AsenseTek Inc. Exhibits Handset-sized Spectrometers

2014/06/04 | By Ken Liu

At the Guangzhou International Lighting Exhibition 2014, the Taiwanese gauge maker AsenseTek Inc. will demonstrate its smart spectrometers “Lighting Passport”, a handset sized LED-lighting gauge integrated with an optical sensor only one-sixth the size of a business card.

Asensetek's Light Passport models.
Asensetek's Light Passport models.

Compact size makes these photometric gauges practical compared to massive size of conventional machines, not to mention their costly prices.

The Lighting Passports are the world's smallest spectrometers of their kind, but boast impressive accuracy and amazing diversity, able to measure correlated color temperature (CCT), color rendering index (CRI), color quality scale (CQS), foot-candle (FC), CIE1931 color space, CIE1976 color space, spectrum, ANSI C78.377-2008, IEC-SDCM, peak wavelength (λp), dominant wavelength (λD), color purity, deep ultraviolet (DUV), and S/P ratio.

Measurement indexes of these items are calibrated to the standards set by National Institute of Standards and Technology (NIST) of the U.S. government, enabling these tools to provide users with standard values to compare with detected values of lighting fixtures.

A tablet PC wirelessly linked to an Asensetek Light Passport displays measurements.
A tablet PC wirelessly linked to an Asensetek Light Passport displays measurements.

Lighting Passports come in three specifications depending on size and functionality: Essence, Standard, and Flagship. Flagship Set is the largest at 68.5mm (W) X 17mm (D) X 189mm (H), also the only model with display screen. The other two are 68.5mm (W) x 17mm (D) x 56mm (H) and have to work with smartphones or tablet PCs, which display all measurement results.

The company provides the measurement app Spectrum Genius Mobile downloadable to iPhone 4S, iPhone 5, iPhone 5S, New iPad (iPad3), iPad mini, iPad mini Retina, iPad Air, iPod touch 5, later versions of iOS mobile devices, and Android 4.4-driven devices. Lighting Passport is the industry's first measurement tool supporting smartphones.

In addition to measurement functionalities, the tool offers lighting designers complete data on light penetration rate of lens materials that are mostly adopted by lighting-fixture makers.

Reliability of the spectrometers has been verified by the Taiwan government's National Measurement Laboratory (NML), mainland China's National Institute of Metrology, and Federal Institute of Metrology of Europe. The meters are patented in the United States, Germany, and China.

Measurements by an Asensetek Standard displayed on a smartphone (right) and an Asensetek Flagship(right).
Measurements by an Asensetek Standard displayed on a smartphone (right) and an Asensetek Flagship(right).

The Lighting Passport is adopted by Osram, Philips, Apple, and Cirque de Soleil, also having been endorsed by the lighting designer James Yuan of 2008 Beijing Olympic Games, Chinese LED Industry & Commerce Development Association Chairman Tom Kuo, BOE Technology Group Co., Ltd. Senior Vice President Li Xiao, the Italian lighting specialist Marco Marsigli, and the American lighting designers Serena Tellini & Francesco Iannone. (KL)