BTS256-LED tester portable meter with built-in integrating sphere for measurement of total flux, emission spectrum and luminous color data of LEDs within the visible spectrum. Optional accessories with bayonet mount:

• Diffuser window for illuminance (lx) and luminous Intensity of spot lamps
• Large size integrating spheres up to 100 cm
• Goniometer for spatial luminous intensity distribution
• Flash power supply for LED binning in single pulse mode

BTS256-E Bi-Tec Sensor Lightmeter for Illuminance (lx), Color Rendering Index (CRI Ra, R1-R15), Color Temperature (K), Color Coordinates, Light Source Spectrum.

X4 Light Analyser with Bi-technology sensor design for integral and spectral UV-A to NIR irradiance, photometric and scotopic illuminance, luminous intensity and luminous color measurements. Modular concept for individual device configuration with optional accessories for:

• Spot luminance
• Luminous flux with integrating spheres up to 100cm diameter
• Spatial luminous intensity distribution with goniometer

P-9710-1 Optometer hand-held for mobile and stationary use. Features a dynamic range from 0.1pA to 2mA and 16 functions and measurement modes including CW, pulse energy, effective luminous intensity (Blondel- Rey equation), data logger and others. Models P-9710-2 and P-9710-4 are optimized for pulse energy measurements of single and multiple light flashes. Wide range of light detectors for photometric and UV-VIS-NIR radiometric measurements. Automatic detector exchange and recognition.

X1₁and1₂ Optometers in compact ergonomic design for mobile use. Four signal channels enable use with multi-channel detectors including RGB luminous color detectors. Suitable for custom design labeling and custom firmware. Model X₁-RM in 19” 3HE rack mount housing for system integration plus USB, RS232 and I/O interfaces. Model X₁-PCB and X₁-PCBC for remote control only operation. Wide range of light detectors for photometric, luminous color and UV-VIS-NIR radiometric measurements.

X1₃ Light Hazard Meter for the evaluation of UV and Blue Light Hazard in the workplace following the EU regulation 2006/25/EC and product classification of lamps and lamp systems in accordance to EN 62471.

X2000 Personal Dosimeter for time dependent data logging of effective irradiance. Battery operated lightweight two-channel design with large data storage capacity. UV Erythema, ICNIRP/ACGIH, UV-C@254nm and other spectral responses.

HCT-99D RGB Photometer in compact lightweight design for the measurement of illuminance and luminous color (xy, color temperature, delta uv). Optional front lens adapter for luminance and color measurements.

X9₁ Photometer for measurement of illuminance in lx and luminance in cd/m².
X9₁ US version Photometer for measurement of illuminance in fc and luminance in fL.

X9₂ Radiometer for use with one RCH type detector for high intensity irradiance measurements in mW/cm² in UV and Blue light curing applications.

X9₃ Radiometer for laser power and laser power density with either integrating sphere detector for laser power or flat field detector for measurement of laser power and laser power density.

X9₄ Radiometer & Photometer for radiant power or luminous flux measurement of narrow beam light sources like endoscopes or other fiber light guide outfitted sources. 50mm diameter integrating sphere with 12.5mmØ measurement port.

X9₆ Radiometer for UV-A, UV-B irradiance measurement of broad band sources and UV-B311nm irradiance of TL-01 type sources in phototherapy and photobiological studies.

X9₇ Radiometer for measurement of irradiance in mW/cm² with one RW-37 series detector.

X9₁₁ and X9_11u Radiometer for UV-C irradiance measurement at 254nm in the mW/cm² or µW/cm² intensity range. For UVGI UV Germicidal Irradiance effective radiometry and also Eprom erasure.

PT-9610 PT-9610 Laser Power and Laser Power Noise meter with PD-2T low profile detector for laser power measurement plus analysis of the laser power noise proportion with three different frequency range filter functions.

P-2000-1 Dual-channel Optometer with wide dynamic range from 0.1pA to 2mA and 16 functions and measurement modes including CW, pulse energy, effective luminous intensity (Blondel- Rey equation), data logger, ratio and others. RS232 and IEEE488 interface. P-2000-2 is optimized for pulse energy measurements of single and multiple light flashes. Wide range of light detectors for photometric and UV-VIS-NIR radiometric measurements. Automatic detector exchange and recognition.

P-9801-V01 Optometer with eight analog signal inputs, eight sample & hold ADCs and powerful microprocessor for simultaneous measurement of up to eight light detectors. RS232, IEEE488, trigger I/O and analog signal output. Model P-9801-V02 optimized for pulse energy measurement of single and multiple light flashes. Model P-9801-V03 features a rise time of 1ms for fast sampling applications. Wide range of light detectors for photometric, luminous color and UV-VIS-NIR radiometric measurements.

P-9802 Optometer with up to 36 signal inputs for multi-channel measurement applications like burn-in processes or light distribution profiles. Remote control via RS232 interface. Wide range of light detectors for photometric and UV-VIS-NIR radiometric measurements.

TR-9600 high speed ata Logger Optometer for data logging of the time dependent intensity locus of light flashes, pulse chains or modulated light. Measurement of the peak intensity, pulse length, pulse half width, pulse energy and pulse repetition rate. Memory with a max 10Msample/second data sampling speed and 2MSample data storage capacity. RS232 and IEEE488 interfaces. TR-9600-1 with 1µs rise time. TR-9600-2 with 100ns rise time. Light detectors for photometric and UV-VIS-NIR radiometric applications.

P-9202 Current to Voltage Amplifiers with very low offset voltage for best possible short circuit photovoltaic operation of semiconductor photodiodes. Model P-9202-4 with high bandwidth of up to 330kHz. Model P-9202-5 with wide gain range from 100pA/V to 1mA/V. Model P-9202-6 with very low noise of 0.5mVeff and gain range from 10pA/V to 100µA/V.

Photometric and Luminous Color Light Detectors for use with Gigahertz-Optik’s optometers and photometers. Light detectors match the CIE and DIN specified V(λ) and V‘(λ) photopic and scotopic functions of the standardized human eye sensitivity. Measurement units:

• Illuminance in lux (lx)
• Luminous Intensity in candela (cd)
• Luminance in cd/m²
• Luminous flux in lumen

Radiometric Detectors for Optical Radiation within the UV-VIS-NIR spectral range for use with Gigahertz-Optik’s optometers and radiometers. The detectors match CIE and DIN specified spectral ranges like UV-A, B & C or are specified for monochromatic radiation. Measurement units:

• Irradiance in W/m² & actinic irradiance
• Radiant Intensity W/sr
• Radiance in W/(m²sr) and actinic radiance
• Radiant Power (Flux) in W

Actinic and Multi-cell Detectors for Light and Optical Radiation for use with Gigahertz-Optik’s optometers. The detectors match CIE and DIN EN specified actinic spectral responsivities as Erythema, ICNIRP, BLUE Light Hazard, Billirubin, Plant-grow, UV-A & V(λ) UV-A & UV-B and others.

Accessories for light meters and light detectors.

Our handbook Measurement of Light and Measurement with Light discusses the characteristics of light and optical radiation, describes relevant measurement units and measurement techniques and explains the integrating sphere and its typical applications.

Technical Note: Flashed LEDs for pulsed light applications are operated in high power mode with short pulse widths and long duty cycle for low average power loss. A very effective heat sink structure on the LED is required to limit power loss and color changes as a result of any increase in junction temperature during the flash. This technical note describes a flash light meter with data-logger function manufactured by Gigahertz-Optik GmbH to measure the luminous flux and luminous color stability during the flash.

Technical Note: Compact Fluorescent Lamps CFL are an effective alternative to incandescent lamps offering higher efficiency and longer life time. The light measurement quantities to qualify the CFL are luminous flux, color temperature, spectral flux distribution and switch on-time. The best cost and time effective measurement instrumentation for these applications are integrating spheres equipped with light meter for luminous flux and color temperature. This technical note explains how to measure flux, spectrum, color and switch on time of CFL using the Gigahertz-Optiks BTS256-LED light analyzer.

Technical Note: Indirect incident light falling on displays, as under day light conditions, reduces display contrast by washing out blackness and color. For product research and quality control the Luminance Contrast and Luminance Color Contrast of displays needs to be measured. Ambient contrast specifies actual contrast conditions. For ambient contrast measurements the display under test must be illuminated. A simple way to simulate indirect lighting is through hemispherical illumination using an integrating sphere light source. This technical note describes different ways to use integrating spheres for hemispherical illumination.

Technical Note: Basic of Light Hazard Measurements

Technical Note: Light Flash Locus Measurement