JPS64911A - Optical device in image forming device - Google Patents
Optical device in image forming deviceInfo
- Publication number
- JPS64911A JPS64911A JP62155499A JP15549987A JPS64911A JP S64911 A JPS64911 A JP S64911A JP 62155499 A JP62155499 A JP 62155499A JP 15549987 A JP15549987 A JP 15549987A JP S64911 A JPS64911 A JP S64911A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- lenses
- image
- optical
- distortion
- 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
- Laser Beam Printer (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Color Electrophotography (AREA)
Abstract
PURPOSE: To decrease the distortion of an image and to improve the image quality so that this optical device can be applied to the fine image by providing lenses of the same number as the number of laser beams in the final stage of an imaging lens system thereby decreasing the lenses to be commonly used.
CONSTITUTION: The 1st laser beam 20a is imaged by the two lenses; the 1st lens 26 and the 2nd lens 27 and the 2nd laser beam 21a is imaged by the two lenses; the 1st lens 26 and the 3rd lens 28. The laser beams 20a, 21a are, therefore, passed through the optical path off the optical axis 26a of the 1st lens 26 and the distortion is generated in the image formed by the same at the time of the imaging in the 1st stage but the laser beams are eventually passed through the optical axes 27a, 28a of the lenses 27, 28 respectively corresponding thereto and the distortion of the image is no longer generated at the time of the imaging in the 2nd stage. The superposition of the distortions is thereby obviated by which the image quality is improved and the application of this device to the fine image is enabled.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62155499A JPS64911A (en) | 1987-06-24 | 1987-06-24 | Optical device in image forming device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62155499A JPS64911A (en) | 1987-06-24 | 1987-06-24 | Optical device in image forming device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01911A JPH01911A (en) | 1989-01-05 |
JPS64911A true JPS64911A (en) | 1989-01-05 |
Family
ID=15607385
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62155499A Pending JPS64911A (en) | 1987-06-24 | 1987-06-24 | Optical device in image forming device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS64911A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02250020A (en) * | 1989-03-23 | 1990-10-05 | Canon Inc | Optical scanner |
JP2008015537A (en) * | 2007-07-23 | 2008-01-24 | Toshiba Corp | Image forming apparatus and optical scanner |
-
1987
- 1987-06-24 JP JP62155499A patent/JPS64911A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02250020A (en) * | 1989-03-23 | 1990-10-05 | Canon Inc | Optical scanner |
JP2008015537A (en) * | 2007-07-23 | 2008-01-24 | Toshiba Corp | Image forming apparatus and optical scanner |
JP4621232B2 (en) * | 2007-07-23 | 2011-01-26 | 株式会社東芝 | Image forming apparatus |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0145089A3 (en) | Automatically adjustable electron microscope | |
CA2084408A1 (en) | Illumination system and method for a high definition light microscope | |
WO1997025722A3 (en) | Condenser-monochromator arrangement for x-radiation | |
SE9003638D0 (en) | PRIMARY RADIATION BLENDERS FOR A ROUND GENEROUS | |
JPS5238878A (en) | Method of adjusting objective lens focal point of transmission scanning particle beam microscope | |
JPS57105715A (en) | Uniform scanning lens having high resolving power | |
WO1996013738A3 (en) | Center masking illumination system and method | |
JPS64911A (en) | Optical device in image forming device | |
JPS57192920A (en) | Scanning optical system for compensating plane falling | |
JPS57204018A (en) | Optical device | |
JPS64909A (en) | Optical device in image forming device | |
JPS6454438A (en) | Stereoscopic photographing device | |
JPS5430026A (en) | Objective lens of high reduced scale | |
JPS5567717A (en) | Focusing method which prevents change in angle of view | |
JPS5533716A (en) | Electron microscope focusing lens system | |
JPS55128243A (en) | Electron microscope | |
JPS55126951A (en) | Electron microscope | |
WO2003003062A3 (en) | Apparatus and method to distort an optical beam to avoid ionization at an intermediate focus | |
JPS547927A (en) | Photographic lens of excellent focusing operation | |
JPS556784A (en) | Method and device for astrigmatism correction in scanning electron microscope | |
JPS64910A (en) | Optical device in image forming device | |
JPS51144654A (en) | Microscope image input device | |
JPS5436747A (en) | Objective lens of microscope | |
JPS5497358A (en) | Scanning electron microscope | |
JPS5346266A (en) | Electronic microscope |