JPS64911A - Optical device in image forming device - Google Patents

Optical device in image forming device

Info

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
Application number
JP62155499A
Other languages
Japanese (ja)
Other versions
JPH01911A (en
Inventor
Toshiharu Takahashi
Kazuhiko Kikuchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP62-155499A priority Critical patent/JPH01911A/en
Priority claimed from JP62-155499A external-priority patent/JPH01911A/en
Publication of JPS64911A publication Critical patent/JPS64911A/en
Publication of JPH01911A publication Critical patent/JPH01911A/en
Pending legal-status Critical Current

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
JP62-155499A 1987-06-24 Optical device in image forming apparatus Pending JPH01911A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62-155499A JPH01911A (en) 1987-06-24 Optical device in image forming apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62-155499A JPH01911A (en) 1987-06-24 Optical device in image forming apparatus

Publications (2)

Publication Number Publication Date
JPS64911A true JPS64911A (en) 1989-01-05
JPH01911A JPH01911A (en) 1989-01-05

Family

ID=

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02250020A (en) * 1989-03-23 1990-10-05 Canon Inc optical scanning device
JP2008015537A (en) * 2007-07-23 2008-01-24 Toshiba Corp Image forming apparatus and optical scanning apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02250020A (en) * 1989-03-23 1990-10-05 Canon Inc optical scanning device
JP2008015537A (en) * 2007-07-23 2008-01-24 Toshiba Corp Image forming apparatus and optical scanning 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
JPS55130512A (en) Semiconductor laser optical system
SE9003638D0 (en) PRIMARY RADIATION BLENDERS FOR A ROUND GENEROUS
JPS57105715A (en) Uniform scanning lens having high resolving power
JPS55121259A (en) Elelctron microscope
JPS57204018A (en) Optical device
JPS57192920A (en) Scanning optical system for compensating plane falling
JPS64911A (en) Optical device in image forming device
JPS6454438A (en) Stereoscopic photographing device
JPS5567717A (en) Focusing method which prevents change in angle of view
JPS5533716A (en) Electron microscope focusing lens system
JPS5667822A (en) Focal diaphragm
JPS5245941A (en) Wide angle zoom lens system
JPS55126951A (en) Electron microscope
JPS64910A (en) Optical device in image forming device
JPS5436747A (en) Objective lens of microscope
JPS64909A (en) Optical device in image forming device
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
JPS5346266A (en) Electronic microscope
JP2685019B2 (en) Laser processing equipment
IT1256798B (en) Optical exposure system for processing a substrate by means of excimer laser