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Instructions
CAUTION: Prior to using the DermLite, read these instructions
and keep them in a safe place for future reference.
CAUTION: United States Federal Law restricts this device to
sale by or on the order of a physician.
CAUTION: The DermLite is designed for external examination
only.
The DermLite II Multispectral is a pocket epiluminescence mi-
croscopy (PELM) device designed to view skin lesions with high
magnification and clarity.
A 25mm 10x lens combined with a cross-polarized four- color
illumination system, allowing independent activation of four
sets of eight LEDs, provides for ideal skin microscopy. While one
set of eight LEDs produces glare- free white light for a daylight-
type rendition of the skin, three other sets each produce
unique colored light, which penetrate different skin depths,
ranging from the shallow blue, and yellow to the deep red light
frequency. A high quality lens with superb color correction and
reduced image distortion is used to image the skin. To facilitate
the use of immersion fluids, and allow for fixed digital imaging,
the unit is equipped with a retractable faceplate spacer.
Directions for Use
CAUTION: Do not look directly into the bright LED light. Pa-
tients must close their eyes during facial examinations.
IMPORTANT: Before initial use, please charge the internal
lithium ion battery for a minimum of 4 hours using the charger
provided.
Hold the DermLite II so that the LEDs are aimed in the direction
of the lesion to be examined. Place the device approximately 1"
(~25mm) from the skin. Push and hold the power button (A) at
the left side of the unit for 2-3 seconds to activate the LEDs.
Look through the lens with your eye placed 1"( ~25mm) to 4"
(~100mm) above the DermLite II. Move the device closer or fur-
ther away from the lesion to obtain the desired image focus. For
oil immersion imaging, or for camera use, rotate the spacer dial
(B) so that the white marker is at the 12 o'clock position. For
fine focusing within a range of +/- 1mm, simply rotate the dial to
the left or right between the 11 and 1 o'clock markers (C).
CAUTION: If the DermLite II Multispectral is used for oil im-
mersion imaging, place the oil only on the skin and then place
the extended faceplate spacer on top of the oil. Do not allow oil
to contact the USB port, DC charging port, or battery compart-
ment.
To attach the DermLite II Multispectral to a camera, the device
is equipped with a 28mm thread (D). A simple ring adapter
(such as a 28-37mm stepping ring) may be required to adapt
the device to your camera of choice. Please contact 3Gen or a
photographic retailer for more information.
Removable Faceplate (E)
The DermLite II Multispectral is equipped with a removable
faceplate. To remove this piece, rotate the spacer dial (B) to
extend the spacer, and twist off the small ring in the very front
of the spacer.
Light Frequencies
The button located on the right side labeled "MODE" (F) lets
you toggle between four sets of eight LEDs with distinct light
frequency. Each time the device is turned on, cross-polarized
white light, used to examine deeper pigmentation, is automati-
cally active. For skin surface visualization using blue light, push
the "MODE" button once. To activate the yellow light, push the
button again, and a third time to achieve red illumination. Push
the button once again to toggle back to white light.
Rechargeable Battery
After a minimum 4-hour initial charge, the lithium-ion battery
provides up to 2 hours of continuous operation, or enough
power for imaging approximately 600 lesions at 30 seconds
per examination. Once the battery is depleted, the unit will
automatically shut off, and will need to be recharged. Plug the
charging cord into the round DC charging port (G), and the red
charging indicator (H) will illuminate. Once the battery is fully
charged, the green indicator will light up (I). Optionally, you may
All manuals and user guides at all-guides.com
use a USB cable to charge the unit via the USB port (J).
CAUTION: When charging with a USB cable, the DermLite II
Multispectral must be connected only to the USB port of a com-
puter that complies with the IEC / EN 60950 standard to ensure
continued compliance of the product with the European Medical
Device Directive. Refer to the operator's manual provided with
your computer to ensure that the computer complies with the
above standard.
After approximately 1,000 charges, the battery's capacity will
diminish and the battery may need to be replaced. To remove
the battery door (K), push down on the two ovals (L) with your
thumbs and slide the battery door back. Disconnect the small
white battery plug, and remove the battery. Insert a new bat-
tery and reconnect the battery plug. Replace the battery door
securely on the device.
The DermLite II Multispectral uses a special lithium-ion battery,
which can only be purchased from 3Gen or from an authorized
3Gen dealer.
CAUTION: Do not under any circumstances use another battery
other than the one designed for this unit. Doing so could result
in damage to the unit. Also, do not under any circumstances
use another charger other than the one supplied with the unit.
Troubleshooting
Please check our website (www.DermLite.com) for the most
current troubleshooting information.
If you need to return the DermLite II Multispectral to 3Gen for
servicing, please call 3Gen prior to returning the device, and
a unique Return Merchandise Number (RMA) will be issued to
you.
No Light
Fully recharge the battery and check again. If the condition
persists, send the unit to 3Gen for evaluation and/or repair.
Weak Lighting
Recharge the battery.
LED Fails
The LEDs used in the DermLite II Multispectral are designed to
last over 100,000 hours. If any of the 32 LEDs fail, contact 3Gen
for repair.
Mechanical Malfunction
Please contact 3Gen to arrange for service.
Care and Maintenance
The DermLite II Multispectral is designed for trouble- free
operation. There are no adjustments to be made nor is any
special servicing required. Never attempt to open the device for
any reason.
Cleaning and Sterilization
The DermLite II Multispectral body may be cleaned or disin-
fected by wiping it with Isopropyl alcohol (70% vol.). Do not use
alcohol or disinfectants in the optical areas of the unit. Do not
use abrasive material on any part of the equipment or immerse
the device in liquid. Do not autoclave.
Cleaning the Lens and the Polarizers
The lens and the polarizing filters should be treated as high
quality photographic equipment and should be cleaned with
standard lens cleaning equipment and protected from harmful
chemicals.
Specifications
The patent-pending DermLite II Multispectral features an in-
novative optical microscopy system designed for superb clarity
and outstanding vision.
DermLite II Multispectral components include:
•
Eight 3mm LEDs each of: White, Blue (470nm), Yellow
580nm), Red (660nm)
•
25mm Lens with 10x Magnification
•
Fixed Cross-Polarization
•
Retractable Faceplate Spacer with 10mm Scale
•
Lithium-Ion Battery
Warranty
5 years for parts and labor.
Serial number and company information are located inside the
battery compartment.
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