Measurement of Light
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Light Measurement Knowledge BaseAre your bulbs simply incandescent? Have your candelas got nits? Are your white LEDs suffering with the blues? Are your luminaires failing to illuminate? For the answers to these and many other questions, we've compiled our light measurement knowledge base. Learn about the science of photometry, colorimetry and spectroradiometry. |
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GoniophotometersGoniophotometers perform angular analysis of light sources and displays. We offer: far-field goniophotometers used to test vehicle lighting and road signs; near-field goniophotometers for testing flat panel displays and luminaires; a source imaging goniophotometer for generating Radiant Source Model files; and the novel Imaging Sphere which is an ultrafast goniophotometer. |
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Integrating SpheresIntegrating spheres are used as directionally-insensitive collectors of light when combined with photodetectors. An internally illuminated integrating sphere emits a field of spatially and angularly uniform luminance or radiance which is perfect for testing and calibrating electronic imaging systems. Spheres are also used for measuring total reflectance and transmittance. |
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Photometers & ColorimetersFrom a simple, inexpensive lux meter, to the world's most advanced imaging photometers, we have a light meter that you can rely upon to give you accurate, repeatable data. Measure illuminance, luminance, luminous intensity and total luminous flux, as well as chromaticity and colour temperature. |
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StandardsCertified standards for calibrating spectroradiometers, colorimeters, reflectometers, spectrophotometers, remote sensing instruments and scatterometers. If you are measuring light sources, you'll need a lamp or radiometric standard. If you are measuring the optical properties of materials, you'll need a standard of reflectance, or for larger tiles, a reflectance target. |
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SpectrometersThe world's most popular spectrometers? Probably - over 120,000 have been sold since 1992 - but there can be no question that Ocean Optics CCD spectrometers provide for convenient, affordable spectral analysis. Applications include laser and LED testing as well as reflectance and transmittance measurements. Choose from spectrometers for the 200-1100nm and 900-2500nm ranges. |
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SpectroradiometersA spectroradiometer functions in a similar way to a photometer or colorimeter but measurements are performed spectrally. For narrow band sources such as LEDs and LCDs, a spectroradiometric measurement yields much more accurate results. Also, spectral measurements are the only way to determine the colour rendering performance of a light source. |
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Uniform Light SourcesAn internally illuminated integrating sphere provides uniform radiance or irradiance for testing and calibration optical instrumentation. Uniform light source systems are used to perform flat-fielding and pixel gain normalisation of cameras and array detectors (CCD, CMOS). Other applications include calibrating photometers and remote sensing spectroradiometers. |