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3-8 Adjusting the brightness
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a
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1
When the LED lamp housing is combined
1
Rotate the light intensity knob a clockwise to make the illumination
light brighter.
2
When the mercury lamp housing is combined
1
Adjust the collector lens focusing knob a to make the entire field of
view brightest evenly.
If the field of view is too bright, insert the ND filter (U-25ND50/
TIP
U-25ND25/ U-25ND6) to adjust the brightness. For details, see
"3-11 Using the filter sliders for reflected light illumination" on
page 39.
· Do not turn OFF the burner for two hours after turning it ON
NOTE
because the burner's lifetime will be shortened.
· When turning ON the mercury burner again, wait until
the vapor of the mercury burner is cooled down and
devolatilized. Wait approx. 10 minutes and turn it ON.
· If you open the lamp housing while the burner is turned
ON, the system stops supplying the power for safety. In this
case, set the main switch to
more and turn it ON. Be sure to wait until the lamp housing is
sufficiently cooled down before opening the lamp housing.
3
When the halogen lamp housing is combined
1
Rotate the brightness control knob a of the power supply for halogen
bulb (TH4-100/TH4-200) clockwise to increase the brightness of the
illumination.
If you rotate the brightness control knob when the photography
TIP
is set (
change the brightness only without changing color temperature
of the illumination, use the ND filter (U-25ND50/U-25ND25/
U-25ND6) to adjust the brightness. For details, see "3-11 Using
the filter sliders for reflected light illumination" on page 39.
For details of the power supply for halogen bulb (TH4-100/TH4-200),
refer to the instruction manual provided with the unit.
(OFF)
mark position), the color temperature changes. If you
, wait 10 minutes or
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