RELATIVE RADIANT INTENSITY (%)
100
80
60
40
20
0
500
1000
1500
2000
2500
3000
OPERATING TIME (h)
L5431
CONVENTIONAL TECHNOLOGY
Crystalization of fused silica
envelope has occured after 500
hours or so operation, which will
reduce the light transmission.
HAMAMATSU TECHNOLOGY
Double halogen cycle
convection will supress the
dissipation of the electrodes.
CONVENTIONAL LAMP
SHORT-ARC TYPE
METAL HALIDE LAMP 575W
L5431
Long Life / 3000 hours
FEATURES
The Short-Arc Metal Halide Lamp, L5431, suited for the
light source for projector, has achieved the average life
time of 3000 hours. It will enhance the performance of LCD
projector and over-head projector (OHP).
LIFE CHARACTERISTICS
Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office.
Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions.
Specifications are subjected to change without notice. No patent rights are granted to any of the circuits described herein. 1997 Hamamatsu Photonics K. K.
TLSOB0029EA
PATENT PENDING
SHORT-ARC
TYPE METAL HALIDE LAMP
575W
L5431
DIMENSIONAL OUTLINE (Unit:mm)
TLSOA0014ED
HAMAMATSU PHOTONICS K.K., Electron Tube Center
314-5, Shimokanzo, Toyooka-village, Iwata-gun, Shizuoka-ken, 438-0193, Japan, Telephone: (81)539/62-5248, Fax: (81)539/62-2205, Telex: 4225-186HAMAHQ
U.S.A.: Hamamatsu Corporation: 360 Foothill Road, Bridgewater, N.J. 08807-0910, U.S.A., Telephone: (1)908-231-0960, Fax: (1)908-231-1218
Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49)8152-375-0, Fax: (49)8152-2658
France: Hamamatsu Photonics France S.A.R.L.: 8, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: (33)1 69 53 71 00, Fax: (33)1 69 53 71 10
United Kingdom: Hamamatsu Photonics UK Limited: Lough Point, 2 Gladbeck Way, Windmill Hill, Enfield, Middlesex EN2 7JA, United Kingdom, Telephone: (44)181-367-3560, Fax: (44)181-367-6384
North Europe: Hamamatsu Photonics Norden AB: Frgatan 7, S-164-40 Kista, Sweden, Telephone: (46)8-703-29-50, Fax: (46)8-750-58-95
Italy: Hamamatsu Photonics Italia S.R.L.: Via Della Moia, 1/E 20020 Arese, (Milano), Italy, Telephone: (39)2-935 81 733, Fax: (39)2-935 81 741
TLSOC0018EA
LONG LIFE MECHANISM
HAMAMATSU has developed a unique technology (PAT-
ENT PENDING), called as double halogen cycle, which
extends the average lamp life over 3000 hours.
SPECIFICATION
Lamp Power
575 W
Lamp Voltage
AC 95 V
Lamp Current
AC 6.1 A
Luminous Flux
49,000 Im
Luminous Efficiency
85 Im/W
Color Temperature
6,000 K
Arc Gap
7.0 mm
Life (Expectancy)
3,000 hours
SPECTRAL DISTRIBUTION
* PATENT PENDING: JAPAN 17, USA 4, EUROPE 4
QUARTZ GLASS
ARC
ELECTRODE
OUTER EFFECT
INNER EFFECT
100
80
60
40
20
0
300
400
500
600
700
800
RELATIVE OUTPUT INTENSITY (%)
WAVELENGTH (nm)
200
TLSOB0018EA
TLSO1011E03
NOV. 1997
Created in Japan
UNIQUE "DOUBLE HALOGEN CYCLE" TECHNIQUE
Outer gas convection suppresses the thermal reaction
with the fused silica envelope thus protect it from
crystallization. It maintains the envelope strength and
light transmission even after 500 hours of operation.
Inner gas convection assures the metal halogen cycle
which minimize the electrode dissipation.
M4
135
5
25.0
0.5
115.0
0.2
7.0
0.5
10.0
0.2
21.0
0.5
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