Toshiba 453 User Manual

e-STUDIO350/352/353/450/452/453

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6.4.2  Exposure lamp
External electrode type xenon fluorescent lamp is used as an exposure lamp in this equipment.
(1)  Structure

Fluorescer is applied on the inside surface of the lamp pipe (except a part to be an opening)
which is filled with the xenon gas.

A pair of the external electrodes covered by the film with the adhesive agent is attached over the
pipe.

(2)  Behavior inside the lamp

The electron inside the pipe is led to the electric field by applying voltage to the pair of the exter-
nal electrodes, and discharge is started. Electrons then flow and clash with the xenon atom inside
the pipe to excite them, and generate the ultraviolet ray. This ultraviolet ray converts the fluoresc-
er into the visible light.

PET film

Aluminum tape

electrode

Adhesive agent,

PET, film

Glass valve

Fluorescer

Xenon gas

(1)Electrode (2)Electron (3)Xenon atom (4)Ultraviolet ray (5)Fluorescer

(6)Visible light (irradiated from the opening to outside the pipe)

(7)Opening (8)Harness

(1)

(6)

(8)

(7)

(5)

(2)

(4)

(3)