v10308u Hamamatsu Photonics, K.K.,, v10308u Datasheet - Page 3

• Manufacturer Part Number: v10308u
• Description: Image Intensifiers
• Manufacturer: Hamamatsu Photonics, K.K.,

Clear, sharp images can be obtained with no chicken wire.
Proximity-focused configuration is more compact and lightweight than inverter type.
Images without distortion can be obtained even at periphery.
High-speed gated image intensifiers are available for imaging and motion analysis of high-speed phenomena.
Excellent image intensification with an even higher signal-to-noise ratio is achieved by combining our
filmless MCP fabrication technology with the high-sensitivity GaAsP photocathode that delivers a typical
quantum efficiency of 50 % at 530 nm (see lower left graph).
ISTRUCTURE
In conventional image intensifiers having a GaAsP photocathode, a thin film is usually deposited over the surface of the MCP
(microchannel plate) to prevent ion feedback. Our newly perfected fabrication method successfully eliminates this thin film while
maintaining the same operating life as conventional image intensifiers. This filmless structure eliminates the loss of electrons passing
through the MCP and therefore improves the signal-to-noise ratio more than 20 % compared to conventional image intensifiers.
This technology is now being applied to the GaAs photocathode fabrication process.
GFilmless MCP Type V8070-74
ILow "halo" effect
Minimizes the halo effect that makes annular light appear around bright spots.
GFilmless MCP Type
Feature
Feature
Feature
Feature
Feature
Vk = 200 V
SN Ratio
INCIDENT
20 % UP
INPUT WINDOW
LIGHT
p
p
p
p
p
p
p
p
p
p
p
p
2
3
4
5
6
HIGH RESOLUTION
COMPACT AND LIGHTWEIGHT
NO DISTORTION
HIGH-SPEED GATE OPERATION
HIGH SENSITIVITY GaAsP PHOTOCATHODE
High Resolution
57 Lp/mm (Typ.)
ELEC-
TRON
e
e
e
e
e
e
Vk
MCP
Vmcp
Vs
PHOSPHOR SCREEN
Cathode Voltage
Vk
Vmcp
Vs
OUTPUT WINDOW
GConventional Type
: CATHODE VOLTAGE
: MCP VOLTAGE
: PHOSPHOR SCREEN
VOLTAGE
200 V
OUTPUT
LIGHT
p
p
p
p
p
GConventional Type
INCIDENT
Vk = 800 V
LIGHT
p
p
p
p
p
p
p
p
p
p
p
p
THIN FILM IS USED TO PREVENT ION FEEDBACK
(ELECTRON TRANSMITTANCE: 70 % to 80 %)
GSystem Configuration
[GREEN]
ELEC-
TRON
e
e
e
e
e
e
LED
Vk
LENS
Vmcp
I.I. Output Window
halo
I.I.
Vs
LENS
Vk
Vmcp
Vs
: CATHODE VOLTAGE
: MCP VOLTAGE
: PHOSPHOR SCREEN
VOLTAGE
CCD Camera
OUTPUT
LIGHT
p
p
p
p
2