A surface emitting laser includes a stepped structure having a step between a first region and a second region, the stepped structure provided in an emission area located in an upper portion of the upper mirror. The surface emitting laser includes a light shielding member provided in a third region between the first region and the second …

Legal parties

Inventors (applicants): Mitsuhiro Ikuta, Aihiko Numata
Assignees (initial): Canon Kabushiki Kaisha (Tokyo, JP)
Agents: Canon U.S.A., Inc. IP Division (attorney)

The application was examined by Armando Rodriguez (USPTO dept. 2828)


  • 1. A surface emitting laser comprising: …
  • 2. The surface emitting laser according to claim 1 , wherein the light shielding member …
  • 3. The surface emitting laser according to claim 1 , wherein the light shielding member …

International priority data

JP: 2011-058124 / Mar. 16, 2011 (national)

Cited documents


  • Chirovsky et al. US 2008/0298416 A1 / 372/50.11, Dec. 1, 2008
  • JP 2001-284722 A, Oct. 1, 2001
  • Jikutani et al. US 2010/0328747 A1 / 359/205.1, Dec. 1, 2010
  • Ueki US 2005/0265412 A1 / 372/43.01, Dec. 1, 2005


Brief Description of the Drawings

FIG. 1 is a diagram illustrating a sectional view of a surface emitting laser according to a first embodiment. FIG. 2 a diagram illustrating a top view of the first …


Background of the Invention

1. Field of the Invention Embodiments of the present invention relate to a surface emitting laser and an image forming apparatus including the surface emitting laser. 2. Description of the Related …

First Embodiment

The reason why the FFP is varied due to the stepped structure is because an inclined angle in the edge portion of the stepped structure is easily varied and a laser …

Second Embodiment

FIG. 3 is a sectional view of a surface emitting laser 102 according to an embodiment. In the second embodiment, the stepped structure 150 is formed above the light shielding …

More details about Surface Emitting Laser and Image Forming Apparatus

Miscellaneous patent data

The application publication date is Mar. 7, 2012, includes the following drawings: Diagram illustrating a sectional view, Surface Emitting Laser and Image, Diagram illustrating a sectional view, diagram illustrating a top view, the inventor's location - Cambridge, MA, the inventor's name is Ikuta Mitsuhiro, similar classification categories are Particular Pumping Means, confinement of the discharge, e.g. by special features of the discharge constricting tube, Power supply, Power, Lasers provided with means to change the location from which, or the direction in which, laser radiation is emitted, Gases, Buried mesa structure, Hollow electrode, saturable absorption layer, Stabilisation of laser output parameters, the application was examined by Armando Rodriguez (2828 USPTO department), the known agent - Canon U.S.A., Inc. IP Division, assigned to a foreign company or corporation, developed by Mitsuhiro Ikuta et al., the assignee organization is Canon Kabushiki Kaisha, located in Tokyo (JP), the patent particularly claims a surface emitting laser comprising…, the claim number 1 is selected as exemplary, the invention description is illustrated by 6 drawings, the grant publication number is 08625649, 7 figures depict the invention details, numbered 13/413,910 (application), categorized under With vertical output (surface emission) as a primary classification, the patent was granted on Jan. 7, 2014, the applicant's last name is Numata, and his first name is Aihiko, the invention is named Surface Emitting Laser and Image Forming Apparatus, the protection scope is defined by 12 claims.

Invention classification information

The invention is classified under Semiconductor lasers, With vertical output (surface emission), Liquids. The designated search classifications include Particular structural features, Mode discrimination, With vertical output (surface emission).

Patent details
Publication number 08625649
Publication date Jan. 7, 2014
Kind code B2
Application number 13/413,910
Application date Mar. 7, 2012
Application type U
Application series code 13
National classification 372/50.124
Total number of claims 12
Exemplary claims 1
Number of drawings 6
Number of figures 7
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