Features
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Interchangeable pre-calibrated heads
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Accurate spectral and cosine corrections
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Metric and English units user selectable
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Large LCD with backlight
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Rugged
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Handheld
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Adaptable to many light measurement needs
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Battery operated
Applications
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Automobile lighting
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Aircraft lighting
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Computer and television manufacturing and service
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Medical lighting
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Commercial and industrial lighting
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Photographic equipment manufacturing
The J18 system consists of a J18 handheld meter and one of several interchangeable heads (list below) which connect directly to the J18.
J1803 Luminance Head
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Video and projection screens
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Surface reflectance
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Computer displays
J1805 Head for LEDs - Output of red, yellow, green and blue LEDs
J1806 Radiance/Radiant Intensity Head - Display color balance
J1810 Chromaticity Head
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Measurement of Chromaticity and White Balance of color monitors
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Color Temperature of Light Sources
J1811 Illuminance Head
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Highway illumination
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Luminaries and lamps
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Workstation illumination
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Lighting for safety
J1812 Irradiance Head
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Laser experiments
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Infrared LED testing
Characteristics
|
|
J1803 |
J1805 |
J1806 |
J1810 |
J1811 |
J1812 |
|
Measurement |
Luminance |
Luminance Intensity |
Radiant Intensity |
Chromaticity, Luminance |
Illuminance |
Irradiance |
|
Applications |
Displays, Television, Medical |
LEDs |
Displays, Television |
Displays, Television |
Highway lighting, Office lighting, Transportation |
Lasers, IR LEDs, Research |
|
Ranges |
0.3 to 300,000 candelas/m2 (Nit)
0.1 to 100,000 footlamberts |
0.01 millicandelas to 10 candelas |
0.001 to 200 W/m2/sr |
0.001 to 0.999 x, y and u', v'
0.3 to 1,000 candelas/m2 (Nit)
0.1 to 300 footlamberts
|
0.01 to 5,000 lux (lm/m2)
0.01 to 500 footcandles
|
0.001 to 2,000 mW/m2
0.1 nW to 0.2 mW
|
|
Spectral Response |
CIE Photopic |
CIE Photopic |
Flat |
CIE Tristimulus |
CIE Photopic |
Flat |
|
Spectral Accuracy |
f1' = <3% (DIN Class A) |
f1' = <3% (DIN Class A) |
±8% 450 to 750 nm |
f1' = <3% (DIN Class A) |
f1' = <3% (DIN Class A) |
±8% 450 to 950 nm |
|
Acceptance Angle |
8° |
8° |
8° |
16° |
180° (Cosine) |
96° (Approx.) |
|
Other Features |
Suction cup |
LED adapters |
Suction cup |
Suction cup |
Level and cover |
Cover |
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Real-time Color Measurements
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Ten Memories for Storing Reference Colors (with J1810 color head)
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RGB Bar Graphs
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D6500 Kelvin Calibration
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Color Temperature Measurement
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Full Control of Measurements and Output of Results (RS-232)
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Analog Output