Optische Abtastvorrichtung, Optisches Abtastverfahren und Synchronisierungssignalakquisitionsverfahren

Details

Veröffentlichungs-Nr.

EP3246744

Aktenzeichen

EP17170914

Anmeldetag

12. Mai 2017

Veröffentlichung

18. September 2019

Erteilung

18. September 2019

Rechtsraum

EP

IPC

G02B27/00G02B26/10H04N1/053

Abstract

An optical scanning device (10) including a light-source device (11), an optical scanning system (11, 15), a first light detector (D1), a second light detector (D2), a comparator (COMP), and a control system (6000). The first light detector (D1) includes a first light-receiving element (PD1). The second light detector (D2) includes a second light-receiving element (PD2). The first light-receiving element (PD1) and the second light-receiving element (PD2) are disposed side by side along a main scanning direction in the scanning range. The control system (6000) receives the comparative signal to set a target value (Pt) of a light-emission power (P) of the light-source device (11) to scan the first light-receiving element (PD1) and the second light-receiving element (PD2), based on a predetermined level Ps of the light-emission power (P) at which an output time (T) is a minimum value.

Anmelder

Firma

Ricoh Company, Ltd.

Land

🇯🇵 Japan

Fachgebiete