Illumination Area And Measurement Area - Konica Minolta cm-5 Instruction Manual

<Object color transmittance measurement>
This instrument utilizes the di:0 °/de:0 ° geometry conforming to CIE No. 15, ASTM E1164 and DIN 5033 Teil 7
standards, and offers measurement with SCI (specular component included) and SCE (specular component
excluded) switching.
The flow of measurement is shown below.
1. Illumination
Light from the xenon lamp
diffuses in the integrating
sphere and illuminates the
specimen with diffused light.
1 Light from the pulsed xenon lamp diffuses on the inner surface of the integrating sphere and the built-in
White Calibration Plate inside the specimen measuring port shutter and illuminates the specimen placed in
the Transmittance Specimen Chamber with diffused light.
2 a : The light transmits through the specimen is received by the specimen-measuring optical system.
b : The light diffused in the integrating sphere is received by the illumination-monitoring optical system and
guided to the sensor.
3 The light transmitted through the specimen and the diffused light are divided into each wavelength
component by the specimen-measuring optical system and illumination-monitoring optical sensor
respectively, and then signals proportional to the light intensity of each component are output to the analog
processing circuit.
By processing the outputs from the specimen-measuring optical system and the illumination-monitoring sensor
with the calculation by the CPU, the instrument compensates for slight fluctuations in the spectral characteristics
and intensity of the illumination light. (Double-beam system)

Illumination Area and Measurement Area

This instrument allows the user to select from three types of measurement area: LAV (ø30 mm), MAV (ø8 mm)
and (SAV) ø3 mm, depending on the specimen and application. Attach the target mask (illumination area) to
match the measurement area.
Target Mask (Illumination Area)
The instrument does not detect whether the currently attached target mask is for LAV, MAV, or SAV. Attach a
target mask to match the selected measurement area.
As the condition of the edge of the target mask affects measurement, do not touch the edge of the target mask's
specimen measuring port by hand, scratch it or make it dirty.
Measurement Area
The measurement area is switched by adjusting settings on the <Measurement Area Settings> screen to
operate the viewing system condenser lens, which is motor controlled.
2. Receiving
a : Light transmitted through
the specimen is received.
b : Light diffused in the
integrating sphere is
received.
3. Sensing
Light is received with the
specimen-measuring and
illumination-monitoring
optical systems.
The light in the wavelength
range of 360 to 740 nm is
divided into 10 nm pitch
components, and signals
proportional to the light
intensity of each component
are output to the analog
processing circuit.
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