Radiant power measurement detector equipped with a compact size 16mm diameter integrating sphere for small size sources with divergent beam light emittance like laser diode dyes & optical fibers. The small footprint detector can be placed directly in front of the light source to collect the entire light beam through its 3mm measurement port. The standard detector is built with a silicon photodiode to measure over a spectral range from 400 to 1100nm. An alternative model with a FC connector added allows connection of a spectrometer. The FC connector is located opposite the measurement port to collect the maximum amount of light signal for high resolution spectrometers with limited sensitivity. The detector head is traceably calibrated and certified to international standards. The ISD-1.6-Si-1 and ISD-1.6-Si-FC-1 detector head can also be supplied in a near-infrared version with an InGaAs photodiode to cover the 800nm to 1700nm spectral range.
The use of a raised S/P ratio i.e. the ratio to the scotopic to photopic vision is addressed in two technical notices from the Illumination Engineering Society of North America.
The TM12-12 is well suited for mesopic vision (night vision), a combination between photopic (cones) and scotopic vision (rods) in situations with relatively little light e.g. driving in pure street lighting.
The TM 24-13 on the other hand addresses the illuminance topic in view of the visual acuity and visual performance in challenging interiors. In the foreground of this written report is the EVE factor (Equivalent Visual Efficiency).
The main point in both documents from the IES is that raised spectral blue proportion in the illuminance enables improved energy efficiency.
The BTS256-E BiTec Sensor Luxmeter from Gigahertz-Optik is a modern light meter designed for both photometric and scotopic illuminance as well as the luminous color and color rendering. In its latest version, the S/P ratio and EVE factor are also indicated on the display. The BiTec light sensor of the BTS256-E enables precise measurements over a large dynamic range.
For detailed information on this leading-edge multi-sensor device see the BTS256-E.
“I made a presentation about the new light meter for my colleagues at work and in the end of it I said: I like it so much. I was going to have a Xmas picture taken of it and send to my friends and family. Friend of mine is a professional photographer so I called him the next day and booked a Xmas picture of myself and the new light meter and of course I could not resist and added you on the list.”
Kristján Gunnar Kristjánsson
By the way:
All visitors of the Photonics West can get a demonstration of the device at out fair booth.
The BTS2048-VL light meter from Gigahertz-Optik is an ideal spectral light and color measurement device that is well suited for use in industrial applications. Its outstanding features include:
Gigahertz-Optik GmbH also offers complementary products for this measurement device with the Bi-Technology Sensor. These include integrating spheres, luminous intensity attachments, goniometers, etc.
All visitors of LpS2014 in Bregenz (30th September to 2nd October 2014, booth no. 6) have an opportunity for personal consultation and demonstration.
We look forward to your visit.