The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jul. 03, 1979

Filed:

Oct. 03, 1977
Applicant:
Inventors:

Kazutoyo Akase, Tokyo, JP;

Isao Kobayashi, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
315168 ; 315203 ; 3152 / ; 315335 ; 331 / ;
Abstract

In a driving circuit which is used together with a flash lamp supplied with an exciting voltage and which comprises a transformer responsive to a trigger pulse for developing a pulse voltage and an exciting member around the lamp for causing a discharge to occur in the lamp in response to the pulse voltage to energize a laser device placed adjacent the lamp, a control member disposed between the transformer and the exciting member allows the pulse voltage to be applied across the lamp and suppresses a parasitic voltage which is otherwise developed across the transformer as a result of the discharge. The control member may comprise an air gap that is preferably from one to several millimeters long.


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