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PDF L2570 Data sheet ( Hoja de datos )
| Número de pieza | L2570 | |
| Descripción | Super Quiet Mercury-Xenon Lamps | |
| Fabricantes | Hamamatsu | |
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t4U.com SMUEPRECRU-RQYU-IXEETNON LAMPSPATENT
DEEP UV LIGHT SOURCE
FOR PRECISION MEASUREMENT
www.DataShee heet4U.comA Mercury-Xenon Lamp is a special lamp designed to
Sprovide high radiant energy in the ultraviolet region.
Since an optimum mixture of mercury and xenon gas is
taenclosed, this lamp offers the characteristics of both
Xenon lamps and super-high-pressure Mercury lamps.
aFor example, the spectral distribution of a Mercury-Xe-
non Lamp includes a continuous spectrum from ultra-
.Dviolet to infrared of the xenon gas and strong mercury
line spectra in the ultraviolet to visible range. In com-
parison to super-high-pressure mercury lamps, the ra-
wdiant spectrum in the ultraviolet region is higher in in-
tensity and sharper in width. The Mercury-Xenon Lamp
also features instantaneous starting and restarting, which
ware difficult with super-high-pressure mercury lamps,
mthus making them an excellent choice as ultraviolet light
w osources.
.cConventional Mercury-Xenon Lamps have a shortcom-
Uing in that the arc point fluctuates and moves gradually
t4with operating time as a result of the cathode erosion.
eHamamatsu has used its many years of experience and
eexpertise in the fields of photonics to produce Super-
hQuiet (SQ) Mercury-Xenon Lamps. The Hamamatsu SQ
SMercury-Xenon Lamps employ a specially developed
tacathode which has minimized the cathode erosion, thus
aallowing extremely high stability and long life.
FEATURES
High stability
Fluctuation (p-p) ..................... 1.0 % (Typ.)
2.0 % (Max.)
Drift .................................... ±0.5 % /h (Typ.)
Long life
Guaranteed life .................. 500 h to 1000 h
Average life ...................... 1000 h to 2000 h
Virtually no arc point shift ....... 0.1 mm (Max.)
Instantaneous starting and restarting
High intensity in deep UV region
Point light source, High luminance
APPLICATIONS
Wafer Inspection
Semiconductor annealing
Fluorescent microscope
Blood analyzer
UV curing for epoxies, etc.
Interferometer, Refractometer
Microfilm enlarger
w.DSubject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office.
wInformation furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications are
wsubject to change without notice. No patent rights are granted to any of the circuits1described herein. ©2000 Hamamatsu Photonics K.K
1 page  
Figure 14: Block Diagram for Fluctuation Measurment
SQ MERCURY-XENON LAMP
SQ MERCURY-
XENON LAMP
POWER SUPPLY
WINDOW 20 mm
ND FILTER
APERTURE 5 mm
SILICON PHOTODIODE
AMPLIFIER
RECORDER
Figure 15: Fluctuation vs. Operating Time
TLSXC0030EA
a) After 5 h operation
10 min
b) After 500 h operation
10 min
10 min
c) After 1000 h operation
10 min
d) After 1500 h operation
10 min
10 min
10 min
10 min
5
TLSXB0091EA
5 Page 
Operational Precautions
4. Use caution concerning the high temperature
and high voltage.
These lamps start discharge at high triggering voltage of
20 kV. Be sure insulation is sufficient to prevent danger
of electrical shock. During operation and immediately af-
ter, the lamp is extremely hot, so never touch with the
hands or place them close to highly combustible mate-
rial.
5. Caution concerning ultraviolet radiation.
These lamps radiate ultraviolet rays which are harmful to
the eyes and skin. Avoid looking directly at a lamp or al-
lowing its light to fall directly on the skin, as there is dan-
ger of burning injury.
6. Always observe the rated values.
The rated operating current for these lamps is specified
(refer to pages 6, 7.). If used outside the specified range,
operation will become unstable and the life will be short-
ened drastically. Operation outside the rated values will
void the Hamamatsu warranty. The 350 W type and 500
W type requires forced air cooling.
7. Replace the lamp after the total number hours
of operation exceeds the average life plus 500
h, or when the inner walls of the bulb become
extremely blackened.
When the total number of hours operation has exceeded
the average life plus 500 h, vaporization of the electrodes
and sputtering on the bulb causes progressive darken-
ing, lowering the lamp’s heat radiation and increasing the
interior temperature and pressure of the lamp to danger-
ous levels that could lead to breakage. Thus, when either
condition is observed, replace the lamp immediately.
Removal Precautions
8. Handle used lamps with the protective cover.
When removing a lamp from the lamp housing, wait until
cools. Since high-pressure gas is contained in the lamp,
rough handling can cause the lamp to shatter; therefore
handle used lamps as carefully as new lamps. Then en-
close it to the protective cover as it was.
The Mercury-Xenon Lamp should be discarded through
an approved waste disposal company, or should be re-
turned to any Hamamatsu sales representative with
reparked in its original packing (or in an equivalent se-
cure package).
CONCERNING LAMP HOUSINGS
Consider The Following Points When Designing
A Lamp Housing
A. A lamp housing should always have a sturdy
cover.
High pressure gas (approx. 1 MPa at room temperature,
approx. 4 MPa during operation) is contained in the lamps.
Lamp housings should always have a sturdy cover in
anticipation of the possibility of the lamp shattering for
any reason.
B. Do not fasten lamps at both ends when install-
ing.
The glass bulbs of lamps expand from heat during op-
eration. Use a flexible fitting at one end (normally the
anode side) and construction that can absorb the heat
expansion.
C. When focusing the light, take care to avoid ex-
cessively high internal lamp operating tempera-
tures.
When focusing the light from a lamp with a mirror, etc.,
the lamp operating temperature can become extremely
high if there is a focal point on the bulb wall or electrode.
Use care concerning operating temperature when using
such a mirrors, etc.
D. Use caution concerning high operating tem-
peratures.
Maintain the lamp surface temperature at less than 750 °C
(1382 °F) and the metal base surface temperature (an-
ode side) at less than 200 °C (392 °F). (The temperature
at the anode is normally higher than at the cathode.)
If the lamp operating temperature exceeds these upper
limits, oxidation of the electrode wire as well as exces-
sive consumption of electrodes and filled gas occur and
greatly shorten the lamp life. The pressure inside the lamp
may also increase excessively and cause the lamp to
shatter. Leave allowance for the heat capacity of the lamp
housing for efficient heat radiation.
Forced air cooling with a fan is necessary for the 350 W
and 500 W lamps, so take care to ensure that the fan
does not stop during operation and for 3 to 5 minutes
after turning the lamp off. Convection currents in the xe-
non gas filled in the lamps increase considerably when a
strong breeze from a fan blows directly on a lamp, lower-
ing the light output stability, so position the fan carefully.
11
11 Page | ||
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| PDF Descargar | [ Datasheet L2570.PDF ] | |
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