TECHNICAL
REFERENCE
132
Light Sources
Oriel Quartz Tungsten Halogen Lamps
• High VIS-NIR output with little UV
ACCESSORIES FOR
ORIEL LIGHT SOURCES
PHOTOLITHOGRAPHY
INSTRUMENTS
• High Color temperatures, >3000 K
Various quartz tungsten halogen Lamps.
Our QTH lamps use a doped tungsten filament inside a quartz
envelope. They are filled with rare gas and a small amount of
halogen. Current flowing through the filament heats the
tungsten to >3000 K. The filaments of our 10 to 250 W lamps
are dense planar structures for highest image brightness. The
white light produced radiates through the clear quartz envelope.
1.05
C. COLOR TEMP/RATED COLOR TEMP
Quartz Tungsten Halogen (QTH) lamps are popular visible and
near infrared sources because of their smooth spectral curve
and stable output. They do not have the sharp spectral peaks
that arc lamps exhibit, and they emit little UV radiation, see the
spectral irradiance curves of our QTH lamps.
1.0
0.95
0.90
0.8
Color Temperature
0.85
0.9
0.95
1.0
1.05
1.10
1.15
OPERATING VOLTAGE/RATED VOLTAGE
Color temperature and total radiated lumens are useful for
comparison of lamp performance in the visible. The efficiency in
the visible, the number of lumens per watt, increases with color
temperature because the spectral distribution curve moves to
shorter wavelengths, i.e. towards the visible, with increasing
temperature (Fig. 1). The emissivity of tungsten is ~0.4, in the
visible, so the output is less than that of a full radiator of
equivalent temperature. Because the emissivity varies with
wavelength, there is not an exact match of spectral distribution
with a full radiator (see Fig. 2).
The color temperature listed for our lamps, in the Ordering
Information Table, is the “correlated color temperature”. This is
the temperature in K (Kelvin) of a full radiator (black body),
which emits light of similar color balance (chromaticity) as the
tungsten halogen lamp. It is a recognized mathematical best
match. For a filament temperature of 3300 K, the color
temperature is approximately 3390 K.
Fig. 1 Correlated color temperature and voltage relationship.
4000
1
SPECTRAL EXITANCE (Wm -2 nm -1)
SOLAR SIMULATORS
MONOCHROMATOR AND
FIBER ILLUMINATORS
INCANDESCENT SOURCES
ARC SOURCES
DEUTERIUM SOURCES
CALIBRATION SOURCES
• Smooth spectrum, stable output
3000
2000
3
1000
2 and 3
Lamp Life and Operating Voltage
The filament parameters are chosen for a specific operating
voltage. Lamp life is the average life of a number of lamps run
in open air at the “rated voltage.” Operating these lamps at a
higher voltage greatly reduces the life. A 6% increase in voltage
reduces the operating life by 50% (Fig. 4). A small reduction in
voltage gives a longer lamp life; a reduction of more than 10%
may drastically shorten lamp life as the halogen cycle cannot
operate effectively under this condition.
2
0
0.25
0.5
1.0
2.0
3.0
WAVELENGTH (µm)
Fig. 2 Spectral exitance of (1) full radiator, (2) a tungsten surface and (3) a gray
body with emissivity of 0.425, at all 3100 K.
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Light Sources
20
6333 at
100 W INPUT
90
0
50
100
150
200
RUNNING TIME (% OF RATED)
Fig. 3 Typical Light Output vs. Time, of the 6333 QTH lamp and a conventional
filament lamp.
10
5
CALIBRATION SOURCES
1.0
0.5
0.1
0.8
0.9
1.0
1.1
1.15
OPERATING VOLTAGE/RATED VOLTAGE
Fig. 4 Lamp Life vs. Voltage. (For some Lamps, operating below 90% of rated
voltage may drastically shorten life.)
Availability – Guaranteed
on select items @ newport.com
These lamp specifications are nominal and subject to change at any time.
Lamp Wattage
DC Voltage (V)
Approximate Flux Filament Size
(Lumens)
(WxH) (mm)
Color
Filament Type** Temperature (K)
Permissible
Burning Position
Average Life
(Hours)
6318
10 W QTH
6
200
1.7 x 0.65
TC
3200
0 or 90°
6319
20 W QTH
6
450
2.3 x 0.8
RD
3200
0 or 90°
100
63358
45 W Calibrated QTH
6.8
705
4.75 H x 1.5 Dia.
CC
****
0 or 90°
****
****
100
45 W QTH
6,8
705
4.75 H x 1.5 Dia.
CC
****
0 or 90°
6332
50 W, Short Filament
12
1600
3.3 x 1.6
RD
3300
0 or 90°
50
6337
50 W Long Filament*
12
850
5.2 x 1.5
TC
3000
0 or 90°
3000
6333
100 W QTH
12
3600
4.2 x 2.3
RD
3300
0 or 90°
50
63355
200 W Calibrated QTH
30
5000
7.0 H x 3.6 Dia.
CC
****
0 or 90°
****
****
63368
200 W QTH
30
5000
7.0 H x 3.6 Dia.
CC
****
0 or 90°
6334NS
250 W QTH
24
10000
7.0 x 3.5
RD
3400
0 or 90°
50
6336
600 W QTH
120
16500
4.0 x 13.5
CC
3200
Any
75
6317
1000 W QTH
120
28000
5.0 x 18.0
CC
3200
Any
150
6315
1000 W FEL QTH
120
27500
6.0 x 16.0
CC
3200
0 or 90°
300
63350
1000 W Calibrated FEL QTH
120
27500
6.0 x 16.0
CC
3200
0 or 90°
****
63362
1000 W FEL QTH
120
27500
6.0 x 16.0
CC
3200
0 or 90°
****
SOLAR SIMULATORS
* Long tubular filament for longer life, but slightly lower output
** Filament Type:
RD = Rectangular Dense
CC = Coiled Coil
TC = Tight Coil
*** Permissible Burning Position: 0° refers to the position of the lamp in the drawings.
**** Refer to calibration certificate supplied with lamp.
MONOCHROMATOR AND
FIBER ILLUMINATORS
63360
INCANDESCENT SOURCES
Model
ARC SOURCES
Ordering Information
DEUTERIUM SOURCES
AVERAGE LIFE/AVERAGE LIFE AT RATED VOLTAGE
CONVENTIONAL
INCANDESCENT
LAMP
TECHNICAL
REFERENCE
RELATIVE LUMINOUS
OUTPUT (%)
100
80
133
PHOTOLITHOGRAPHY
INSTRUMENTS
ACCESSORIES FOR
ORIEL LIGHT SOURCES
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134
Light Sources
0.50
TECHNICAL
REFERENCE
(12.7)
0.35
A
(9)
1.18
0.77
6318 10 W
(30)
(19.5)
DEUTERIUM SOURCES
CALIBRATION SOURCES
B
C
6318 10 W
6319 20 W
6319 20 W
3.75
4.0
(95)
(101.6)
6332 50 W
0.38
SHORT FILAMENT
(9.5)
6333 100 W
6334 250 W
1.9
(48)
2.0
(50.8)
MODEL
A
B
C
6332
0.45
1.73
1.18
0.45
1.73
1.18
0.53
2.17
1.30
1.63
(41)
1.18
(30)
6333
6334
6337 50 W
(11.5)
(11.5)
(13.5)
(44)
(44)
(55)
(30)
(30)
(33)
6336 600 W
0.34
LONG FILAMENT
(8.64)
ARC SOURCES
63358/60 45 W
INCANDESCENT SOURCES
MONOCHROMATOR AND
FIBER ILLUMINATORS
0.75
0.70
(19)
0.75
(17.8)
(19)
1.0
(25.4)
4.10
(104)
3.1
4.10
(78.7)
(104)
3.74
3.0
(76.2)
(95)
2.76
1.55
(70)
(39.3)
1.87
SOLAR SIMULATORS
(47.5)
1.0
(25.4)
63350/62 1000 W
0.56
(14.2)
63355/668 200 W
6317 1000 W
6315 1000 W
1.56
ACCESSORIES FOR
ORIEL LIGHT SOURCES
PHOTOLITHOGRAPHY
INSTRUMENTS
(39.6)
WEB
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for more info
Phone: 1-800-222-6440 • Fax: 1-949-253-1680