Radiant energy – Luminophor irradiation
Patent
1975-09-04
1977-07-12
Church, Craig E.
Radiant energy
Luminophor irradiation
250479, G03B 4116
Patent
active
040356507
ABSTRACT:
An X-ray diagnostic installation in which there is effectuated an automatic proportioning of the exposure time. In the dental X-ray exposure installation, a ray detector is applied to the pouch, which delivers an electrical signal in conformance with the ray intensity when it is impinged upon by X-radiation, and which is interconnected with the setting means to an automatic exposure timer in such a manner whereby the exposure time is determined by an output signal of the ray detector for the purpose of effectuating an optimum degree of film darkening.
REFERENCES:
patent: 2946892 (1960-07-01), Bas-Taymaz
patent: 3854096 (1974-12-01), Hermeyer
Church Craig E.
Siemens Aktiengesellschaft
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