JPS57144514A - Scan optical system having fall compensating function - Google Patents

Scan optical system having fall compensating function

Info

Publication number
JPS57144514A
JPS57144514A JP3034981A JP3034981A JPS57144514A JP S57144514 A JPS57144514 A JP S57144514A JP 3034981 A JP3034981 A JP 3034981A JP 3034981 A JP3034981 A JP 3034981A JP S57144514 A JPS57144514 A JP S57144514A
Authority
JP
Japan
Prior art keywords
deflector
medium
lens
luminous flux
optical system
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
JP3034981A
Other languages
Japanese (ja)
Inventor
Kazuhiko Matsuoka
Kazuo Minoura
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP3034981A priority Critical patent/JPS57144514A/en
Publication of JPS57144514A publication Critical patent/JPS57144514A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
    • G02B27/0031—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration for scanning purposes

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Lenses (AREA)

Abstract

PURPOSE:To compensate the fall of a deflector with a compact constitution, by adding a scan optical system including a single spherical lens and a single lens having a toric surface from the side of a deflector between a medium to be scanned and the deflector. CONSTITUTION:The luminous flux given from a light source device 1 forms an image linearly at the area near the reflective surface 3a of a deflector 3 through a linear image forming system 2. A single spherical lens 4 plus a single lens 5 having a toric surface including a main and secondary axes having different refractive powers in the two orthogonal directions are provided between the deflector 3 and a medium 6 to be scanned. According to the rotary movement of the deflector 3, the reflected luminous flux is deflected to be formed into an image on the medium 6 through a synthetic system of the lenses 4 and 5. In this case, the surface 3a tilts in the direction vertical to the deflecting surface while the deflector 3 is turning and is changed to a position 3a'. Even in such case, the image forming position has no change on the medium 6 althrough the luminous flux passing through the lens systems 4 and 5 has a change as shown by the dotted lines.
JP3034981A 1981-03-03 1981-03-03 Scan optical system having fall compensating function Pending JPS57144514A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3034981A JPS57144514A (en) 1981-03-03 1981-03-03 Scan optical system having fall compensating function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3034981A JPS57144514A (en) 1981-03-03 1981-03-03 Scan optical system having fall compensating function

Publications (1)

Publication Number Publication Date
JPS57144514A true JPS57144514A (en) 1982-09-07

Family

ID=12301363

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3034981A Pending JPS57144514A (en) 1981-03-03 1981-03-03 Scan optical system having fall compensating function

Country Status (1)

Country Link
JP (1) JPS57144514A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0286066A2 (en) * 1987-04-10 1988-10-12 Hitachi, Ltd. Optical scanning apparatus
US4930850A (en) * 1987-11-06 1990-06-05 Asahi Kogaku Kogyo Kabushiki Kaisha Scanning optical system for use in laser beam printer
USRE34438E (en) * 1986-07-14 1993-11-09 Minolta Camera Kabushiki Kaisha Tilt error corrective scanning optical system
EP0851261A2 (en) * 1996-12-19 1998-07-01 Canon Kabushiki Kaisha Scanning optical apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE34438E (en) * 1986-07-14 1993-11-09 Minolta Camera Kabushiki Kaisha Tilt error corrective scanning optical system
EP0286066A2 (en) * 1987-04-10 1988-10-12 Hitachi, Ltd. Optical scanning apparatus
US4930850A (en) * 1987-11-06 1990-06-05 Asahi Kogaku Kogyo Kabushiki Kaisha Scanning optical system for use in laser beam printer
EP0851261A2 (en) * 1996-12-19 1998-07-01 Canon Kabushiki Kaisha Scanning optical apparatus
EP0851261A3 (en) * 1996-12-19 1998-09-23 Canon Kabushiki Kaisha Scanning optical apparatus
US5995131A (en) * 1996-12-19 1999-11-30 Canon Kabushiki Kaisha Imaging lens system of scanning optical apparatus

Similar Documents

Publication Publication Date Title
JPS57144515A (en) Scan optical system having fall compensating function
JPS57144516A (en) Scan optical system having fall compensating function
JPS643616A (en) Lighting optical system for endoscope
JPS6453353A (en) Apparatus for scanning information plane optically
CA2212655A1 (en) Swimming or diving goggles
JPS5636622A (en) Scanning optical system having inclination correcting function
JPS57144517A (en) Scan optical system having fall compensating function
GB2030725A (en) Focussing binoculars
JPS57144514A (en) Scan optical system having fall compensating function
JPS57195205A (en) Optical waveguide
JPS5479644A (en) Scanning optical system
JPS57144518A (en) Scan optical system having fall compensating function
JPS5722218A (en) Scanning optical system using plural beams
JPS5669610A (en) Scanning optical system having array light source
JPS643618A (en) Laser color printer
JPS5735823A (en) Scanning optical system having inclination correcting function
JPS57144513A (en) Scan optical system having fall compensating function
JPS6488509A (en) Light scanning optical system
JPS52111736A (en) Scanning optical system with information beam take-out element
JPS649412A (en) Scanning/image forming optical system
JPS5735825A (en) Scanning optical system having inclination correcting function
JPS557727A (en) Planoconvex lens
JPS6450010A (en) Light beam scanner
JPS6426817A (en) Optical scanning device
JPS6411222A (en) Image recorder