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.
Patent No.:
Date of Patent:
Dec. 13, 2022
Filed:
Mar. 10, 2020
Ricoh Company, Ltd., Tokyo, JP;
Kazuki Nagasawa, Miyagi, JP;
Yoshihiko Miki, Kyoto, JP;
Kazuhiro Yoneda, Osaka, JP;
Naoki Fukuoka, Osaka, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A plurality of surface emitting lasers are formed on the single surface emitting laser element. The plurality of surface emitting lasers have respective emission wavelengths selected from wavelengths satisfying condition of:0<λ−λ≤5.36×10λ−×5.83×10λ32.4 where a first emission wavelength is λ[nm], a second emission wavelength shorter than the first emission wavelength is λ[nm], and a middle wavelength between the first emission wavelength and the second emission wavelength is λ[nm]. At least one of the plurality of surface emitting lasers has an emission wavelength different from an emission wavelength of another surface emitting laser.