We bring quality to light. Integrating Spheres

Instrument Systems GmbH – Optronik Division The Optronik Division of Instrument Systems already has a very long track record for its company history. When Optronik GmbH was founded in Berlin back in 1968, development of the world’s first digital luxmeter was the focus of attention. In 1972, the first computercontrolled goniophotometer followed for testing automotive lamps. Today, Optronik Line products are the benchmark for tailor-made solutions in the automotive exterior lighting industries, for product certification and for applications in aerospace and traffic management. The Berlin site is...

Lamp measurement systems The oldest application for the integrating sphere is the measurement of total geometric luminous flux from electric lamps. The technique originated at the turn of the 20th century (by Richard Ulbricht in Germany, which is why it is also called an Ulbricht sphere) as a simple and fast method of comparing the lumen output of different lamp types. It is still widely used in the lamp industry for quality control during manufacture. The alternative method is a goniophotometer which would need to rotate a photodetector in a complete sphere around the lamp (or rotate the sample...

Reflectance and transmittance measurement Uniform light source: luminance standard Another application for integrating spheres is the measurement of the reflectance and transmittance of diffuse or scattering materials. Integrating spheres provide the ideal means for creating a uniform light source. Light collected by a sphere is diffusely reflected many times, so that any spatial characteristics are integrated for light leaving the sphere exit port plane. The emitted light is nearly perfectly Lambertian. Our uniform source sphere LDN 500 is internally coated with a special photometer paint, a...

ITS 500 and ITS 1000 Integrating Sphere Photometric Lamp Measurement Systems Our integrating sphere photometer systems are designed to measure the total luminous flux, luminous color, and spectral distribution of lamps according to DIN 5032 and CIE No. 84. The systems accommodate most lamp types, including arc, fluorescent, incandescent, HID, and LED. Each lamp measurement system features an integrating sphere, optionally calibrated lamp standard, precision power supply, photopic response detector, and display unit. The Digilumen 9500 luminous flux meter used in conjunction with the sphere features...

ITS 500 / ITS 1000 General characteristics  Equipment for luminous flux measurement of light sources by comparison with a standard lamp  Construction according to DIN 5032 Section 1 and CIE Publication No. 84 “The Measurement of Luminous Flux”  Metal frame construction with swiveling mechanism to open the sphere  Light-tight mechanical lock  Flexible adjustment bar to connect our lamp holders  burning positions (2 vertical, 1 horizontal), clamping 3 device for fixing holders in pendent, upright, and horizontal position  Coated inside with our BaSO4 photometer paint with Lambertian white...

Photometer Digilumen 9500  Precision photometer head with Si-photopic detector  Diameter of light sensitive area: 12 mm  Superior V()-approximation, class L (highest accuracy) or A (high accuracy) according to DIN 5032 Section 7, DIN-EN 13032-1  Thermostatic stabilization of photometer head to approx. 35°C ± 0.1°C  Diffuser built-in flush with inner surface of sphere  Electronic, microprocessor-controlled display unit Digilumen 9500  1/2 -digit LED seven segment display 4  Ranging auto/manual or remote programmable  Fixed lux calibration, freely selectable lumens calibration  Attenuator:...

Product selection chart Lamp ratings Lamp standard Sphere diameter Spectral range Application software Sphere accessories  Lamp sockets for integrating spheres Precision measuring sockets are special quadri-pole lamp holders with two separate galvanic connections, each of which has a point of contact with the lamp, one for the supply of the lamp and the other for the voltage / current measurement.  Electrical data of measuring sockets for vehicle lamps Unom 24 V DC, Imax 20 A, Test voltage Utest 50 V DC. Electrical data of measuring sockets for general  purpose lamps Unom 250 V AC/300 V DC,...

Photometer paint for integrating spheres Our photometer paint for integrating spheres acc. to CIE Publication No. 84 (1989), characterized by Lambertian diffuse and selective reflectance and composed of highly purified BaSO4.  Lambertian white diffusing surface  Reflectance 80% (DIN 5036 Section 3)  Variation of reflectance < 1.5% in wavelength range 400 to 700 nm  Particularly suitable for coating integrating spheres according to CIE Publ. No. 84 (1989) ”The measure- ment of luminous flux”  Recommended quantity approx. 1.25 kg/m2  Individual test report for reflectance, spectral reflec-...

LDN 500 Luminance Standard (uniform light source) Features and applications Technical data The LDN 500 is an integrating sphere uniform light source with color temperature regulation. Each model includes a sphere photometer and control unit. The LDN 500 luminance standard creates on its light emitting surface a luminance which is accurately defined. Alternatively, you can control constant luminance or color temperature. The LDN 500 is therefore an excellent tool for testing and calibrating a variety of photometers, such as:  Luminance meters  Retroreflectometers  Photo receivers  Colorimeters...

Reflectance and transmittance measurement KMS 500 Options  Working standards to calibrate the measuring equipment, with calibration certificate: Regular reflecting standard (surface reflecting mirror), diffuse reflecting standard  dif -illuminant source for connection to integrating  sphere for measurements of dif KMS 500 transmittance and reflectance measurement instrument  Reflectance   Diffuse reflectance d  Transmittance   Diffuse transmittance d  Reflectance of flat and convex surface rearview mirrors  Transmittance dif at diffuse light incidence (optional) Applications The...