JPS64910A - Optical device in image forming device - Google Patents
Optical device in image forming deviceInfo
- Publication number
- JPS64910A JPS64910A JP62155498A JP15549887A JPS64910A JP S64910 A JPS64910 A JP S64910A JP 62155498 A JP62155498 A JP 62155498A JP 15549887 A JP15549887 A JP 15549887A JP S64910 A JPS64910 A JP S64910A
- Authority
- JP
- Japan
- Prior art keywords
- lens system
- laser beams
- image
- imaging lens
- optical axis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Fax Reproducing Arrangements (AREA)
- Laser Beam Printer (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Color Electrophotography (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
PURPOSE: To reduce the effective scanning region of the lens of an imaging lens system so as to decrease the distortion of the image and to improve the image by providing oscillating devices which oscillate laser beams so as to incline the same in the optical axis direction of the imaging lens system.
CONSTITUTION: The 1st oscillating part 20 and the 2nd oscillating part 21 are provided with inclination in such a manner that the 1st and 2nd laser beams 20a, 21a are entered to the imaging lens system 24 both at 2.5° angle ϕ of inclination in the optical axis 24a of the lens system. Then, the 1st laser beam 20a and the 2nd laser beam 21a are intersected with the optical axis within the imaging lens system 24 and the spacing between the two laser beams 20a and 21a in the lens system 24 is reduced. The pass width of both the laser beams 20a, 21a in the 1st lens 24b and the 2nd lens 24c, i.e., the effective scanning region of the lenses is reduced. The distortions of the images are thereby decreased and the image quality is improved even if the large-diameter lenses are not used. The application of this device to the fine image is thus enabled.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-155498A JPH01910A (en) | 1987-06-24 | Optical device in image forming apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-155498A JPH01910A (en) | 1987-06-24 | Optical device in image forming apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS64910A true JPS64910A (en) | 1989-01-05 |
JPH01910A JPH01910A (en) | 1989-01-05 |
Family
ID=
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4960332A (en) * | 1987-07-06 | 1990-10-02 | Vertikum Magas-Es Melyepitmenyjavito Kisszovetkezet | Apparatus for geometrical testing of spherical bodies, in particular steel balls |
US8803937B2 (en) | 2011-11-22 | 2014-08-12 | Canon Kabushiki Kaisha | Optical scanning apparatus and image forming apparatus |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4960332A (en) * | 1987-07-06 | 1990-10-02 | Vertikum Magas-Es Melyepitmenyjavito Kisszovetkezet | Apparatus for geometrical testing of spherical bodies, in particular steel balls |
US8803937B2 (en) | 2011-11-22 | 2014-08-12 | Canon Kabushiki Kaisha | Optical scanning apparatus and image forming apparatus |
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