specification light bulb cronus bhaskar spectrometer & colorimeter for light bulb measurements

Transcription

1 specification light bulb cronus bhaskar spectrometer & colorimeter for light bulb measurements

2 Contents 1 Cronus Bhaskar: 100% light bulb inspection Highlights Application areas Optical configuration Cronus Bhaskar general specifications Cronus Bhaskar dimensions

3 1 Cronus Bhaskar: 100% light bulb inspection The Cronus Bhaskar is the latest addition to the Admesy Cronus series. It is based on the well-known Admesy spectro-colorimeter combination of a VIS spectrometer with a tri-stimulus colorimeter. This unique combination allows the user to choose between detailed spectral information of the spectrometer and high speed colour, light and flicker measurements of the colorimeter. The Cronus Bhaskar measurement system is designed as an production-friendly extension to standardized measurement geometries and conditions as described by CIE. The new Bhaskar can be considered a mix between an integrating sphere and typical cosine corrector measurement systems, optimized for fast, accurate and repeatable inline measurements of LED bulbs. The optical configuration of the Cronus Bhaskar is designed to cover an entire typical E27 (or similar size) fitting light bulb, acting like an integrator. Offering accurate and repeatable measurements in terms of colour, relative total light output and optional flicker and start-up behaviour within a couple of milliseconds for 100% inspection of lighting products. 2 Highlights Spectral range nm Complete LED bulb measurement device Spectral output or colour values output are both possible Measures xy, CRI, lumen, spectrum, flicker Measure flicker at samples/second Auto-range function Excellent linearity Dark current compensated USBTMC compliant, SCPI command set, high speed device Numerous interfaces, ideal for system integration All spectral and flicker calculations are done inside 3

4 3 Application areas The Cronus Bhaskar is used for measurements in solid state lighting development and production processes. Due to the spectrometer the Cronus is ideal to develop and monitor the spectral colour of LED light sources during development, during long term testing or in production. The colorimeter in the Cronus Bhaskar allows for high-speed 100% inspection of your light bulb production checking the quality of all your products, leading to increased product quality and production efficiency. The spectrometer can be used for both spectral and colour measurements. Controlling your LED lighting system is crucial. Not only visible light flicker within the range ~3 to ~70Hz but also invisible (non-perceivable) flicker can have an effect on human health. Ranging from headaches, migraines or impaired visual performance to an increased risk of seizures research has shown that flicker is an effect with reason for concern. The build-in colorimeter and large internal memory of the Cronus Bhaskar allows for high speed measurements over a long period of time. This enables the user to check flicker effects over time and during fade of the light source. Adjusting the driver during development and checking the flicker effect of each light source during production leads to increased performance and end-user satisfaction and health. 4

5 4 Optical configuration The Cronus Bhaskar is equipped with a fixed optical system which can cover an entire regular E27 fitting type light bulb. In production lines for 100% inspection, a light bulb is positioned into the tube opening. The inner surface of the tube acts as an integrator alike an integrating sphere and allows for relative total luminous and radiant flux measurements. Typical installation applications include multiple Cronus Bhaskar systems for simultaneous measurements which are calibrated against a full standardized integrating sphere measurement setup with a reference light bulb. 5

6 5 Cronus Bhaskar general specifications Spectral measurement system Spectral range nm Optical resolution 2.3nm (FWHM) Integration time 2.5ms 20s Dynamic range > Non - Linearity < 0.5% Accuracy (Y,x,y)¹ 4% +/ Repeatability (Y,x,y)² < 1% +/ Colorimeter measurement system Photo detector Silicon photo diode using XYZ interference filters Spectral response Approximates CIE 1931 colour matching functions Dynamic range > Measurement speed Luminance up to samples per second Accuracy (Y,x,y)¹ 4% +/ Repeatability (Y,x,y)² < 0.5% +/ System configurations Fixed integrator 75 mm diameter opening Interfaces High speed USB, RS232, Ethernet, Trigger connections Weight 3500 gram Size (HxWxD) 339 x 130 x 130 mm Shutter lifetime More than 1 million cycles Shutter speed 70ms-120ms (close or open time, depending on temperature and lifetime) Operating temperature C Power consumption 1750mW (USB powered) 1 Sufficient signal to noise ratio and relative to the calibration standard 2 Sufficient signal to noise ratio Specifications are subject to change at any time without any notice 6

7 6 Cronus Bhaskar dimensions 7

8 Admesy B.V. Sleestraat CA Ittervoort The Netherlands T +31 (0) F +31 (0) info@admesy.com The material in this document is subject to change. No rights can be derived from the content of this document. All rights reserved. No part of this document may be reproduced, stored in a database or retrieval system, or published in any form or way, electronically, mechanically, by print, photo print, microfilm or any other means without prior written permission from the publisher. Version /2017 8