HAMAMATSU L7298, L7296-50, L7295, L7293, L6566 Datasheet

PATENTS

L2D2

LAMPS

DEUTERIUM LAMPS

The best light source is supported by the best electrode technology.

L2D2 Lamps (Deuterium Lamps )

LONG LIFE : 4000 HOURS

4 times longer guaranteed life

■ Life Characteristics

100

50

CONVENTIONAL

LIGHT INTENSITY (%)

TYPE

0

0

1000

TIME(hours)

L2D2 LAMP
L2-2000
SERIES

2000

3000

L2D2 LAMP

L2-4000
SERIES

4000

TLSOB0050EA

The L2-4000 series lamps
assure an operating life of
4000 hours-4 times longer
than conventional lamps.
This is the longest operat­ing life of any deuterium
lamp.

HIGH LIGHT OUTPUT : 1.3 TIMES HIGHER

1.1 times higher (L2-4000 series)

The L2-2000 series lamps
produce 1.3 times higher
light output than conven­tional lamps. The L2-4000
series lamps even offer
light output 1.1 times higher
than conventional lamps.

■ Radiant Output Intensity

4

3

2

1

LIGHT INTENSITY (A.U.)

0

190

CONVENTIONAL
TYPE

210

230

250

WAVELENGTH(nm)

L2D2LAMP L2-2000 SERIES

1.3 TIMES HIGHER

270

290

(L2-2000 Series)

310

330

350

370

390

TLSOB0052EA

HIGH STABILITY : 2 TIMES STABLE

Fluctuation: 0.05 %p-p, Drift:±0.3 %/h

■ Light Output Stability

TLSOB0051EA

L2D2 LAMPS

CONVENTIONAL LAMPS

TIME (30 s/div.)

EXCELLENT
TEMPERATURE
CHARACTERISTICS

1×10-5AU

Use of a ceramic structure with excellent thermal
stability ensures stable lamp operation even in
the presence of ambient temperature variations.

By using a newly devel­oped ceramic structure, a
uniform and optimum tem­perature distribution, which
are the most important
factor for stable operation,
can be obtained. This
results in fluctuations of
only 0.05 %p-p in the light
output, as well as a re­duced drift of only ±0.3 %/h.

APPLICATIONS

UV-VIS Spectrophotometers
CE(Capillary Electrophoresis)
SOx/NOx Analyzers
Film Thickness Measurement

SMALL INTENSITY VARIATIONS : 1/2

The spacing between elec­trodes is kept fixed by a
molded ceramic spacer.
This reduces the lamp to
lamp variations in the light
output to one half of that

TLSOF0138

HPLC
Atomic Absorption Spectrophotometers
Thin Layer Chromatography

obtained with our lamps
having a conventional all
metal structure.

LESS MOVEMENT
OF ARC
EMISSION POINT

Compared to our conventional lamps

■ Intensity Variation

TLSOB0053EA

4

3.5

3

2.5

2

1.5

1

RELATIVE INTENSITY(A.U.)

0.5

0

190

210 230 250 270 290 310 330 350 370 390

WAVELENGTH (nm)

L2D2 LAMPS

CONVENTIONAL
LAMPS

Since the ceramic structure has a small thermal
expansion coefficient, there is virtually no move­ment of the arc emission point during operation.

1 2

L2D2 Lamps (Deuterium Lamps )

SPECIFICATIONS FOR L2D2 LAMPS

SELECTION GUIDE

SPECIFICATIONS

GENERAL PURPOSE

Series

L2-4000

L2-2000

L7296-50

L6311-50

L6312-50

Type.

No.

L6565
L6566
L6301
L6302
L7298
L6303
L6304
L6305
L6306
L6307
L6308
L7296

L7295
L6309
L6310
L6311

L6312

L7293
L7292

Power

Consumption

30W

Dimen-

sional

outline

q
w
q
q
y
r
r
w
w
e
e
y
i
y
e
e
t
o
t
o
u
u

Type

General Purpose

See-through

Window
Material

UV glass

UV glass

Synthetic silica

UV glass

UV glass

UV glass

Synthetic silica

UV glass

Spectral

Disiribution

185 to 400

185 to 400

160 to 400

185 to 400

185 to 400

185 to 400

160 to 400

185 to 400

UV glass 185 to 400

MgF

2

115 to 400

(nm)

Series

L2-4000

L2-2000

L2-2000

Aperture

Diameter

Required Dis-

charge Starting

Voltage

(mm)

1.0 350

1.0 350

0.5 400

1.0 350

1.0 350

0.5 400

1.0 350

0.5 400

1.0 350

0.5 400

1.0 350

0.5 400

0.5 400

1.0

0.5 400

1.0 350

0.5 400

0.5 400

1.0

1.0

1.0 350

1.0 350

Min.

(V dc)

350

350
350

Cathode Rating

2.5 V/1.0 V

3.0 V/0 V to 1 V

2.5 V/1.0 V

2.5 V/1.7 V

3.0 V/0 V to 1 V
10 V/2.5 V to 6.0 V
10 V/7.0 V
12 V to 15 V/0 V

2.5 V/1.0 V

2.5 V/1.7 V

Anode

Current

Voltage

(mA dc)

300±30

300±30

Tube
Drop

Typ.

(V dc)

80

80

85

80

SEE-THROUGH TYPE

The see-through type electrode structure enables
straight-line arrangement of the halogen lamp, deuterium
lamp, optical system and optical passage. This simplifies
optical design of UV-VIS spectrophotometer etc., and
eliminates loss of light amount caused by the half mirror.

Output Stability

Drift

Fluctuation

Max.

(%/ h)

±0.3

±0.3

—

(p-p)
Max.

(%)

0.05

0.05

—

Voltage

(V dc, ac)

2.5±0.25

3.0±0.3

2.5±0.25

3.0±0.3

10±1

12 to 15

2.5±0.25
10±1

Warm-up

C

Filament Ratings

Current

Typ.

(A dc, ac)

4
5

4

5

0.8

1.210±1

0.5 to 0.55

4

0.8

Time

Min.

(s)

20

20

An Example for optics of See-through type

TOP VIEW

SEE-THROUGH

L2D2 LAMP

Guaranteed

Operating

F

Current

Typ.

(A dc)

1.8

0 to1.8

1.8

3.3

0 to1.8

0.3 to 0.6

Voltage

(V dc)

1.0±0.1
0 to 1

1.0±0.1

1.7±0.2

0 to 1

2.5 to 6.0

7.0±0.5

G

00

1.0±0.1

2.5 to 6.0

F

1.8

0.3 to 0.6

1

G

Life

(h)

4000

2000

2000

D

H

40˚

Conventional

Lamps

L613,L613-04

L3382-01

—

L613,L613-04

L1636

—

L1729
L3381-01
L3382-01

—

L591

L2196

—
L1626
L2541
L2526
L4505

L4505-50

L4510

L4510-50

L879-01

L879

LENS

E

HALOGEN
LAMP

TLSOC0011EF

Type.

No.

L6565
L6566
L6301
L6302
L7298
L6303
L6304
L6305
L6306
L6307
L6308
L7296

L7296-50

L7295
L6309
L6310
L6311

L6311-50

L6312

L6312-50

L7293
L7292

SEE-THROUGH TYPE

Dimen-

Series

Type.

No.

L6999

L6999-50

L2-2000 80300±30

L7307
L7174
L7306

A

Lamps with an aperture of 0.5 mm diameter are high brightness types. These lamps provide 1.6 times higher brightness than standard lamps with an aperture of 1.0 mm diameter. (Refer to page 8.)

NOTE

B

A trigger voltage higher than this value is required to start lamp discharge. For reliable lighting, an application of 500 V to 600 V is recommended. The maximum rated voltage that can be applied is 650 V.

C

The heater current during warming-up period is so high that the enough voltage may not be supplied to the lamp in case the cable between the lamp and the power supply is long because

of voltage drop at the cable. The power supply for the heater should be designed so as to supply specified voltage at the lamp terminal.

D

The lamp life end is defined as the point when the light output falls to 50 % of its initial value or when output fluctuation (p-p) exceeds 0.05 %.

E

L2D2 lamp does not always have a direct replacement for conventional type from its dimensional outline point of view. Please refer to page 5 and 6. Please consult with our sales offices

for further details.

sional

outline

r
!0
r
!0
r

Window
Material

UV glass

Spectral

Disiribution

(nm)

185 to 400

Aperture

Diameter

Required Dis-

charge Starting

Voltage

(mm)

0.5 400

0.5 400

1.0 350

1.0 350

1.0 350

Min.

(V dc)

Anode

Current

(mA dc)

Tube

Drop

Voltage

Typ.

(V dc)

Output Stability

Drift

Max.

(%/ h)

±0.3

NOTE

Fluctuation

(p-p)
Max.

(%)

0.05

F

Recommended operating voltage is 3.5 V ± 0.5 V.

GIn these lamps, discharge current is allowed to flow into the filament during operation so that cathode temperature is maintained at an optimum level. So there is no need for input of external

power to keep the filament heated.

H

Average operating life : Operating life depends on environmental conditions (vacuum atmosphere). It is recommended that these lamps be used in an oil-free environment.

*We recommend using Hamamatsu deuterium lamp power supplies in order to obtain the full performance from our lamps (Refer to page 7 and 9).

Voltage

(V dc, ac)

2.5±0.25

Warm-up

Filament Ratings

Current

Max.

(A dc, ac)

4

Time

Min.

(s)

20

Operating

Voltage

(V dc)

1.0±0.1

1.7±0.2

Current

Max.

(A dc)

1.8

3.3

Guaranteed

Life

(h)

2000

3 4

Conventional

DE

Lamps

Type.

No.

—

—
L1887

—
L1886

L6999

L6999-50

L7307
L7174
L7306