The BM-7A luminance colorimeter is the first instrument in Topcon’s line-up of multi-aperture instruments. It utilizes an industry standard aperture mirror design. Its three dedicated silicon photodiode sensors provide direct measurement of the CIE tri-stimulus values (X, Y, Z). From these, the calibrated Luminance and Chromaticity coordinates (and other derived data) are computed and displayed on the integral LCD. All measurement data is available through an RS-232C serial interface if remote control is required. A step up from the BM-9 (luminance only), the BM-7A is faster and can measure both luminance and color with greater precision. Two macro lens options allow for measurement of very small objects or light sources down to 0.06 mm (60 um). The cost-effective BM-7A is the instrument of choice for factory production lines requiring multiple instruments but is also at home in the R&D lab or Engineering department as a “workhorse” photometer/colorimeter. The user selectable measurement aperture (knob) allows to optimize the measurement spot size (also a function of working distance) and the minimum measurable luminance level (larger apertures can measure lower levels).
- Delivers luminance accuracy within ±2% (for Standard source A, 2°, luminance 5cd/ m2 or above Auto Range)
- Supports Luminance, chromaticity and color temperature measurements
- Measurement speed of just 0.5 seconds
- Ideal for inline measurement in mass production settings