Due to the sheer numbers involved, sorting and binning LEDs based on photometric and colorimetric specifications creates challenges in terms of accuracy and speed of measurement. Accurate results must be obtained and data transferred in the shortest time possible. Plus precise synchronization of the measurement device with the existing system process is just as important. Gigahertz-Optik's BTS2048-VL was designed to meet these challenges in industrial manufacturing of LEDs. The BTS2048-VL is a fast high resolution spectral light & color meter for on-line production applications. It features a fast response time over a wide dynamic range using three processors and electronic shutter plus input and output triggers for synchronized LED binning applications. It provides complete photometric, scotopic, colorimetric and radiometric spectral data. Complementary products for use with the BTS2048-VL include integrating spheres, luminous intensity attachments, goniometers and custom design light measurement solutions suitable for industrial, medical and laboratory use.
Gigahertz-Optik GmbH's CSS-45 packs the full power and capability of a spectroradiometer into a self-contained compact metal housing only 1.75" dia x 2" high in size. The CSS-45 covers a spectral range between 360 nm and 830 nm (extended visible spectral range according to CIE S023). An optical bandwidth correction function based on CIE 214 further improves the quality of the measured values. Manual and auto gain settings enable a wide measurement range from 1 lx to 350,000 lx for illuminance and color measurements. Automatic dark current suppression is accomplished by means of a built-in electronic shutter. Accurate illuminance measurements require a precise, cosine-corrected entrance optic. The CSS-45 has an excellent cosine response (f2≤ 1 %). The spectral detector head attaches to a PC via a one meter long USB cable. The USB interface handles the power requirements. All measurement, data readout and collection is controlled by the supplied software. There is also an SDK available for self-programmers. A unique feature is the CSS-45 RS485 interface to permit fast communications with the device at longer distances for remote applications. Every CSS-45 comes calibrated and certified by Gigahertz-Optik's calibration laboratory that is accredited by DAkkS (D-K-15047-01-00) for spectral responsivity and spectral irradiance calibrations according to ISO/IEC 17025. Additional CSS-45 Specialist Functions: • Horticultural lighting - PAR measurement Photosynthetic Photon Flux Density (PPFD) in μmol/m²s • Human Centric Lighting - melanopic irradiance and illuminance, melanopic daylight equivalent illuminance • Phototherapy - total irradiance for bilirubin, Ebi, in mW/cm2 (IEC 60601-2-50) as well as average spectral irradiance in μW/cm2/nm (American Academy of Pediatrics)
The Photometric Toolbox software creates, edits, repairs, reports, compares and converts luminaire photometric data in IES, CIBSE or EULUMDAT formats. Specifiers use Photometric Toolbox to compare performance characteristics of similar luminaires, create iso-illuminance templates and visualize light distributions; manufacturers use Photometric Toolbox to edit and repair files, change type B to type C formats and convert IES to European standards or visa versa. The first and most robust analysis tool for luminaire photometry, a requirement for every lighting professional.
Gigahertz-Optik’s hand-held P-9710-4 radiometer / photometer now features an external TTL trigger input function useful for remote timing of pulsed light measurements. In the P-9710-4 pulse energy mode, the measurement begins automatically upon the trigger input. The P-9710-4 is capable of measuring the pulse energy (joules, J/cm2, lux-seconds, effective candela) of single and multiple burst pulsed events >1 microsecond in length. Stepped auto-ranging allows the user to zoom-in on the correct gain level with the last setting stored for future use. Independent of signal magnitude, system bandwidth is 0.166 Hz (at 6s) to > 300 MHz within the unit’s current measurement range of 0.1 pA to 2 mA.
Integrating sphere light sources provide a uniform and variable light output making them useful as calibration light source standards for PRNU Photo-Response Non-Uniformity comparison of imaging systems and sensors. Gigahertz-Optik’s new model integrating sphere source ISS-8P-HP features uniformity equal to or better than 98% within 90% of its output port featuring a fast H-M-L High Medium Low setting of intensity level using interchangeable attenuators. This quick three setting adjustment of light level is highly desirable in production comparison applications. The ISS-8P-HP is built around an 8cm diameter integrating sphere made from Gigahertz-Optik’s highly diffuse reflective and stable synthetic ODM98 coating with a 19mm diameter light output port. Its light source design offers selectable 10 to 100 W QH lamps and features three manually interchangeable neutral density filters with OD0, OD1 and OD2 optical densities corresponding to 100%, 10% and 1% light throughput for fast H-M-L adjustment of light output. This method is faster than using a variable aperture plus the hole pattern design attenuator minimalizes color temperature drift. A fan is supplied to air cool the lamp socket to ensure lamp life and system stability.
The ISD-100HF-V01 39 inch / 1000 mm diameter integrating sphere is set-up for use with Gigahertz-Optik’s BTS256-LED tester. The sphere is designed for measurement of omnidirectional light sources. The hinge frame stand allows one hemisphere to open/close for mounting of the test LED or lamp source in the center of the sphere. Standard sphere features include a height adjustable all-purpose test sample holder, auxiliary port located at the bottom of the sphere with port plug and a 100W auxiliary lamp to compensate for any substitution correction and self-absorption errors caused by a different size port aperture or the test source placed inside the sphere.
AGi32 is a 3D software program for lighting design and analysis capable of computing numeric and photometrically accurate visual evaluations for any application of electric lighting or daylight. Architectural geometry is easily created internally, or 2D and 3D content imported via DWG format. Lighting results are computed and rendered simultaneously using radiosity techniques yielding a completely interactive rendered model. A post-radiosity ray trace process can be applied for near photo-realistic imagery. Extensive calculation options produce documentation to verify adherence to lighting specifications such as IES and CIE recommended practices, LEED and the Model Lighting Ordinance.
The fully automated TP121-TH is ideal for high accuracy testing and binning of SMD and onboard LEDs in both pulsed and constant current modes. Test LED junction temperature is controllable from 25 °C to 85 °C. Its design conforms to the latest published standards such as CIE S025, LM-79-08, DIN 5032. A high-quality, TE-Cooled CCD spectroradiometer plus motorized integrating sphere provide luminous flux, spectrum and color measurement with software supported binning functions. Plus safety interlocks prevent accidental sphere engagement during production.
White optically diffuse reflecting material is useful in many lighting design, laser and reflection/transmission applications including integrating sphere coating, laser cavities and reflectance standards. Besides exhibiting a nearly perfect diffuse reflectance of >98 % from 400-1600 nm and >95% from 250 - 2000 nm, Gigahertz-Optik’s white ODM98 features uniform reflectance across the UV to NIR spectral range and over a large area, operating temperatures up to 200°C (300°C short exposures), long term UV stability, high maximum permissible radiation flux densities, machinability plus it can be cleaned and resurfaced. Gigahertz-Optik now offers its new ODMP material in different grades of gray. It is made from ODM98 only the material is doped with different density black pigments. Gray scale material at different reflectance levels is required in many calibration tasks like qualifying the linearity of optical sensors. Raw material in plate and block form as well as machined reflectance plates and reflectance standards with protective housings are available. Gray scale ODM with reflectance values of 2%, 20%, 50% and 70% are stocked. Other reflectance values are available on request.
Gigahertz-Optik's new BTS256-E Light Meter provides all necessary illuminance, color and spectral data to fully qualify solid state lighting and any other type light source. Now lighting designers, engineers, manufacturers and maintenance workers have a cost-effective way to accurately characterize any type light source on site on the fly.
i3dOP is an iPhone application designed to allow anyone interested in lighting to quickly view the output of a light fixture in a fast, efficient, and visually realistic way. Lighting analysis and design should be quick and easy. The more quickly the software responds to the user's questions, the more time there is left for exploration and experimentation - increasing the prospect of a great design. i3dOP works with standard Type C IES format files allowing the user to position a fixture in a simple grid, and explore how light from the fixture projects onto a wall, the ground, or a surface as the position of the fixture is changed dynamically. Using the fundamental equation: "illuminance = intensity/distance-squared" at the heart of its algorithmic engine, we believe that i3dOP is a major step forward in understanding the most ubiquitous commodity available...light, in the environment it is used.
ElumTools™ by Lighting Analysts is a fully integrated lighting analysis Add-in for Autodesk® Revit®. Leveraging content that is already present in the Revit model such as spatial geometry and light sources, ElumTools enables the calculation of illuminance on any surface or workplane using the industry standard radiosity method. Numeric point-by-point results are visible in any Revit view and a completely interactive visualization is provided in a pop-up window. All statistics are available for use in Revit schedules. ElumTools operates in Revit 2012 Architecture or MEP.
Gigahertz-Optik’s X1-RM Multimeter is a rack-mountable version of the X1 series hand-held universal optometer for use with a wide variety of detector types. It combines a powerful microprocessor and electronics in a rack-mountable module for integration into standard 19” rack-mount housings. A unique feature of the X1-RM is its capability to operate up to four photodiode detectors with all four signals displayed on its four line display with on/off backlighting. The X1-RM is compatible with most Gigahertz-Optik light detector heads for flexible use over a wide range of radiometric, photometric and colorimetric measurement applications.
High intensity UV and BLUE LED light sources are now being employed in UV processes like UV and BLUE light curing. Featuring a unique horizontally constructed photodetector assembly which keeps the photodetector out of the hot zone, the X1-1-RCH-116-4 UV & Blue Light LED Curing Radiometer is able to maintain stability in high temperature and intense UV flood and spot curing environments. The fully remote controllable 4-channel X1-1 meter features auto-ranging from 0.1 pA to 200 uA or manual range selection, CW, dose, run/stop, offset and peak hold functions, selectable integration time from 20 ms to 1 second, USB interface, backlit LCD and is compatible with all other Gigahertz-Optik single and multi-sensor (up to 4) light detector heads. The RCH-116-4 ‘wand’ style detector consists of a RADIN radiation integrator coupled to a stainless steel rigid tube housing a quartz light guide that pipes the light signal to a detector capsule housing the photosensor/filter assembly. RADIN not only provides a cosine corrected spatial response but along with the light guide and remote detector capsule provides signal attenuation and thermal isolation. The detector assembly is not subject to direct irradiation which reduces ageing and saturation effects and allows the RCH detector to operate in temperatures up to 1000 C, (peaks up to 2000 C). The detector covers the spectral range from 350 – 465 nm with calibration points at key LED wavelengths of 365, 375, 385, 395, 405 & 436nm auto-ranging from 1 to 40,000 milliwatts/cm2. The wavelength for measurement is selected using the X1-1 meter menu function. The low profile RCH detector enables measurement just 8mm above the exposure plane. Internationally traceable calibration certification describes the calibration procedure, responsivity and traceability. The X1-1-RCH-116-4 Radiometer includes the meter, detector, USB cable, calibration certificate and carrying case. Optional S-X1 software is available.
Slight differences in LED characteristics can occur as a result of mass production. Sorting the LEDs into bin classes based on luminous flux and color properties provides a means of cataloging them. The LED manufacturer may do the binning or the party implementing the LEDs may self-bin them. For higher efficiency processing the LED is normally operated and measured in single pulse mode at a few millisecond long pulse width at a specified operating current. Gigahertz-Optik has developed a cost effective measurement system consisting of the BTS256-LED tester and LPS-20-1500 LED power supply with S-BTS256 software to assist with single pulse LED binning. Both meter, power supply and control software work in tandem to drive and measure the test LED in single pulse mode and record the results.
The expert committee members involved in writing ANSI/IESNA RP-27.2-00, IEC/DIN/EN 62471 (CIE S 009) & DIN EN 14255-1 Photobiological safety of lamps and lamp systems-measurement techniques recognized that lamp manufacturers and distributors, safety engineers and industrial hygienists tasked with optical radiation health hazard assessment require a portable, accurate and cost effective means of metrology. Subsequently the use of filter radiometers, with some restrictions, was written into the standard as an alternative measurement method to the more complex, stationary and expensive spectroradiometric method. Gigahertz-Optik’s X1-3 Light Hazard Meter with the XD-45-HUV UV-Hazard Detector, XD-45-HB BLUE-Light Hazard Detector and XD-45-HB-SRT200 FOV & Distance Adapter fulfills this requirement for a handy field portable meter for product classification and light hazard assessment.
Gigahertz-Optik’s new BTS256-E LED-Luxmeter provides all necessary illuminance, color and spectral data to fully qualify SSL, CFL and any other type light source. Its Bi-Technology sensor improves measurement accuracy and is precisely cosine corrected. The LED-luxmeter with integrated shutter autoranges over an eight decade dynamic measurement range.