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L6999

L2D2 LAMPS DEUTERIUM LAMPS

Hamamatsu Photonics 

L2D2 Lamps (Deuterium Lamps )

SPECIFICATIONS FOR L2D2 LAMPS

SELECTION GUIDE

Power

Consumption

Type

30W

General Purpose

See-through

Series

L2-4000

L2-2000

L2-2000

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

SPECIFICATIONS

GENERAL PURPOSE

Series

Type.

No.

Dimen-

sional

outline

L2-4000

L6565

L6566

q

w

L6301

q

L6302

q

L7298

y

L6303

r

L6304

r

L6305

w

L6306

w

L6307

e

L6308

e

L2-2000

L7296

y

L7296-50

i

L7295

y

L6309

e

L6310

e

L6311

t

L6311-50

o

L6312

t

L6312-50

o

L7293

u

L7292

u

Window

Material

UV glass

UV glass

Synthetic silica

UV glass

UV glass

UV glass

Synthetic silica

UV glass

UV glass

MgF2

Spectral

Disiribution

(nm)

185 to 400

185 to 400

160 to 400

185 to 400

185 to 400

185 to 400

160 to 400

185 to 400

185 to 400

115 to 400

Aperture

Diameter

(mm)

1.0

1.0

0.5

1.0

1.0

0.5

1.0

0.5

1.0

0.5

1.0

0.5

0.5

1.0

0.5

1.0

0.5

0.5

1.0

1.0

1.0

1.0

Required Dis-

charge Starting

Voltage

Min.

(V dc)

350

350

400

350

350

400

350

400

350

400

350

400

400

350

400

350

400

400

350

350

350

350

Anode

Current

(mA dc)

300±30

300±30

Tube

Drop

Voltage

Typ.

(V dc)

80

80

85

80

SEE-THROUGH TYPE

Series

Type.

No.

Dimen-

sional

outline

L6999

r

L6999-50

!0

L2-2000

L7307

r

L7174

!0

L7306

r

Window

Material

UV glass

Spectral

Disiribution

(nm)

185 to 400

Aperture

Diameter

(mm)

0.5

0.5

1.0

1.0

1.0

Required Dis-

charge Starting

Voltage

Min.

(V dc)

400

400

350

350

350

Anode

Current

(mA dc)

300±30

Tube

Drop

Voltage

Typ.

(V dc)

80

NOTE ALamps 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.)

BA 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.

CThe 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.

DThe 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 %.

EL2D2 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.

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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.

An Example for optics of See-through type

TOP VIEW

40˚

SEE-THROUGH

L2D2 LAMP

HALOGEN

LENS LAMP

TLSOC0011EF

Output Stability

Drift

Max.

(%/ h)

Fluctuation

(p-p)

Max.

(%)

±0.3

0.05

±0.3

0.05

—

—

Filament Ratings

Warm-up

Operating

Voltage C Current

Typ.

(V dc, ac) (A dc, ac)

Time

Min.

(s)

Voltage

(V dc)

Current

Typ.

(A dc)

2.5±0.25

3.0±0.3

4

5

20

1.0±0.1

0 to 1

1.8

0 to1.8

1.0±0.1

1.8

2.5±0.25

4

1.7±0.2

3.3

3.0±0.3

10±1

10±1

5

0 to 1

0 to1.8

F

0.8

2.5 to 6.0 0.3 to 0.6

20

1.2

7.0±0.5

1

12 to 15

0.5 to 0.55

2.5±0.25

4

10±1

0.8

G

0

G

0

1.0±0.1

1.8

2.5 to 6.0 F 0.3 to 0.6

Guaranteed

Life D

(h)

4000

2000

2000 H

Conventional

Lamps E

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

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

Output Stability

Drift

Max.

(%/ h)

Fluctuation

(p-p)

Max.

(%)

±0.3

0.05

Voltage

(V dc, ac)

Filament Ratings

Warm-up

Operating

Current

Max.

(A dc, ac)

Time

Min.

(s)

Voltage

(V dc)

Current

Max.

(A dc)

2.5±0.25

4

20

1.0±0.1

1.8

1.7±0.2

3.3

Guaranteed

Life D

(h)

2000

Conventional

Lamps E

—

—

L1887

—

L1886

Type.

No.

L6999

L6999-50

L7307

L7174

L7306

NOTE FRecommended 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.

HAverage 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).

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