PRODUCTS

Spectroradiometer : SR-LEDW-5N

Top-end models of TOPCON SR series
for Mega-Contrast Measurement
Spectral bandwidth 5nm model

Spectroradiometer

  • Outline
  • Features
  • Specification

Outline

This product is a new top-end model in Topcon Spectroradiometer, which has capability of measuring wide dynamic range from ultra-low luminance of 0.0005cd/m² to ultra-high of 5,000,000cd/m².
Addition to the new FIX mode, the SR-LEDW calculates optimum measuring setting automatically and reduces the measuring time in continuous measurement of the same object. This product can be used with high speed and high accuracy not only in the Design/Development department but also in quality control in production line of LED module.

Features

Features

  • High sensitivity and wide dynamic range (0.0005 - 5,000,000cd/m²)
  • FIX mode allows to shorten measurement time in continuous measurement mode. (Conventional ratio 1/2)
  • LED chip can be measured with ease by improving uniformity of the sensitivity
  • Capability of illuminance measurement by using the adapter (option)

 

Applications

  • Luminance, Chromaticity, Color rendering index and Color temperature for LED Back light, LED lighting
  • Luminance and Chromaticity of TV, PC, Tablet, Smart phone display.
  • Luminance and Chromaticity of head light and interior panel of automobile.
  • Used as optical characteristic evaluation sensor for system equipment.

 

Specification

Specifications

Photo detector Electronically cooled linear CCD
Dispersing element Diffraction grating
Optical system Object lens : f= 82mm F2.5, Collimation lens : Range of view= 5°
Measurement angle 2°/1°/0.2°/0.1° selectable (Motor moved)
Measurement distance 350mm - ∞ (distance from metallic tip of objective lens)
Spectral bandwidth 5nm *Half bandwidth
Wavelength accuracy ±0.3nm *Hg emission lamp
Wavelength range 380 - 780nm
Wavelength resolution 1nm
Measurement mode Auto/Manual(integral time/frequency) / External vertical sync signal input
Measurement object Spectral radiance : W・sr-1・m-2・nm-1
Calculation function

Radiance Le : W・sr-1・m-2,  Luminance Lv : cd・m-2,
CIE1931 chromaticity coordinates xy,
CIE1976 chromaticity coordinates u' v', Tristimulus value XYZ,
Correlated color temperature and Deviation,
CIE standard observer 2°/ 10°

Range of guaranteed
illuminance accuracy(*1)(*2)

2.0°: 0.0005 - 1,500,000, 1.0°: 0.0015 - 4,500,000
0.2°: 0.0375 - 5,000,000, 0.1°: 0.15 - 2,000,000

Accuracy in luminance(*1) ±2% or less
Accuracy in chromaticity(*1) ±0.002
Repeatability in luminance(*3)

1.5% : 0.0005 - 0.005cd/m²
0.4% : 0.005 - 0.1cd/m²
0.3% : 0.1 cd/m² or more

Accuracy in chromaticity(*4)

0.005 : 0.0005 - 0.005cd/m²
0.0015 : 0.005 - 0.1cd/m²
0.0005 : 0.1 cd/m² or more

Polarization error Luminance 1% or less, Spectral radiance 2% or less (400 - 780nm)
Measurement time(*5) NORMAL Mode: about 1 - 248sec, HIGH SPEED Mode: about 1 - 17sec
Interface USB2.0/RS-232C selectable
Power supply Dedicated AC adapter AC100V-240V, 50/60Hz, DC12V36W
Power consumption about 36W
Use conditions Temperature: 5 - 30℃, Humidity: 80%RH or less (no condensation)
Outer dimensions (W×D×H) 150×406×239mm
Weight 5.5kg


(*1) : For standard illuminance A
(*2) : Measurable range in Normal and High speed mode.
(*3) : 2σ from 10 times continuous measurement at measuring angle 2°in normal speed mode.
(*4) : (Max – Min) value from 10 times continuous measurement at measuring angle 2°in normal mode.
(*5) : Except communication time with PC
 

Measurement area (Diameter φ)

mmφ
Measurement
angle
Measurement distance (*1)
350mm 500mm 800mm 1000mm 2000mm
10.0 15.1 25.4 32.2 66.4
4.99 7.55 12.7 16.1 33.2
0.2° 1.00 1.51 2.54 3.22 6.64
0.1° 0.50 0.76 1.27 1.61 3.32


(*1) The measurement distance is the distance from the tip of the metal fixture on the instrument of the objective lens.
 

Available Accessories

  • Attachment Lens
: AL-6
  • Attachment Lens
: AL-11
  • Attachment Lens
: AL-12
  • Reference White Board
: WS-3
  • CCD Adapter
: IA-2
  • Fiber probe
: FP-3P
  • Tripod 5N
: Tripod5N
  • Tripod
: Tripod-SR
  • Fine Control Table
: S-4
  • Neutral Density Filter
: ND-10/100
  • Illuminance Adapter
: ZV-30