7 Appendix
DC3100
40
DC3100-470
Nominal Wavelength
470nm
Maximum Current
1000mA
Cut-off Frequency
80MHz
DC3100-630
Nominal Wavelength
630nm
Maximum Current
1000mA
Cut-off Frequency
70MHz
1)
depending on LED type and modulation frequency
Microscope Mounting are available for the following microscopes:
·
Olympus BX/IX
·
Leica DMI
·
Nikon F Mount
·
Zeiss Axioskop
7.3.3
LED for Frequency Domain FLIM
The DC3100 is a LED driver for high brightness (HB) LEDs, which can apply a sine
wave modulation to the LED in the range from 10MHz to 100MHz. A HB LED has an
internal capacity, which limits the maximum frequency. This cut-off frequency is an
intrinsic property of LED. In the following sub chapters the phase difference between
reference output and the emitted light signal are shown.
7.3.3.1
LED @ 365nm
The DC3100-365 contains the UV LED NCSU033A from Nichia. The LED emits a
wavelength at 365nm and an optical power of up to 310mW.
Warning
This DC3100 head radiates intense UV light during operation. Precautions
must be taken to prevent looking directly at the UV light with unaided eyes.
Do not look directly into the UV light or look through the optical system
during operation of the device. This can be harmful to the eyes even for brief
periods due to the intense UV light.
If there is the possibility to receive a reflection of the UV light, UV light
protective glasses has to be used to prevent that UV light can catch one's
eye directly.
If viewing the UV light is necessary, use UV light protective glasses to avoid
damage by the UV light.
The 10dB cut-off frequency of the DC3100-365 is 90MHz. The maximum current is
limited to 700mA.
