Goniophotometric tester

(near field)

Goniophotometric tester

(near field)

Products > Automotive evaluation > Automotive lighting tester > RH600


Automotive headlamps are controlled by lenses and reflectors, so its brightness and pattern should be evaluated at a given distance. Unlike the conventional method of measuring the light distribution characteristics by moving the headlamp after installing the detector 25m away, the RH600 measures the light distribution characteristics of a fixed headlamp at a short distance. Simulating illuminance at any distance with just one measurement is possible, which greatly saves space and time compared to the conventional method.

  • Significantly time-reduced measurement compared to the conventional method(takes about 10 min.)

  • Calculates measurement results under various conditions in a single measurement

  • Near-field measurement with a two-dimensional luminance sensor

  • No darkroom equipment required by installing in a dark box

  • High signal-to-noise ratio by original illuminance / luminosity calculation algorithm

  • Illuminance / luminosity can be calculated at any position and distance

  • Can be linked with optical simulation software using arbitrary ray data and IES format

Measurable sampleautomotive headlamp
Measurable sample size800mm or less
Measurement area600 x 600mm
Measurement timeabout 10 min. (X: ± 90°, 1° step Y: ± 90°, 1° step)
Measurement angle range and interval
X: ± 90°, Y: ± 90°, interval: 0.1°
Detectortwo-dimensional luminance sensor(ultraviolet to near infrared type)

Measurement items
  • Luminance ray data
  • Illuminance / luminosity / light distribution data

Measured data

> Viewing angle characteristics of liquid crystal displays

When measuring with a light distribution measurement system using a liquid crystal display for the sample, the luminance distribution characteristic obtained is the viewing angle characteristic of the liquid crystal. Since the 2D luminance sensor measures the surface of the liquid crystal display, which is a sample, a large amount of information on the sample surface can be obtained with a single measurement. It can be applied to the measurement of 3D displays for the naked eye.

Example: RH600 measurement data(liquid crystal crystal plate: 3D-2D comparison)

Example: RH600 measurement data(naked-eye LCD panel: 3D-2D comparison)

> Automotive headlight

Automotive headlights control the direction of light with lenses and reflectors, and it is necessary to evaluate the illuminance and pattern at a fixed distance. In the conventional measurement, a detector was installed at a position 25 m away, and the light distribution characteristics were measured by rotating the lamp mounted on the goniometer. With RH series, the brightness distribution characteristics of the lamp are measured at a short distance, and the illuminance at an arbitrary distance is obtained by simulation based on it. The distance to be evaluated in one measurement can be freely changed.

Example: road roughness data by distance

▲road surface illumination calculated with RH series

> General lighting

Measurement using a two-dimensional luminance sensor is also an effective method for general lighting. In addition to space savings, samples with different light distribution characteristics depending on distance, such as spotlights, can be measured at a single position. It is based on the luminance light distribution characteristics obtained from the measurement and illuminance characteristics.

Luminance distribution characteristics and examples of simulation data(spotlight-indicator comparison)

  • Lighting equipment such as automobile headlamps and room lamps
  • Street light, floodlight, spotlight
  • LED package(ultraviolet, visible, infrared), chip, module
  • Viewing angle characteristics of liquid crystal and organic EL display
  • Light distribution characteristics of infrared sensor
  • Characteristics of optical materials such as lenses and reflectors

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