JPS643622A - Rotating polygon mirror - Google Patents

Rotating polygon mirror

Info

Publication number
JPS643622A
JPS643622A JP16032287A JP16032287A JPS643622A JP S643622 A JPS643622 A JP S643622A JP 16032287 A JP16032287 A JP 16032287A JP 16032287 A JP16032287 A JP 16032287A JP S643622 A JPS643622 A JP S643622A
Authority
JP
Japan
Prior art keywords
mirror
center
resin
rotating polygon
slope
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
JP16032287A
Other languages
Japanese (ja)
Inventor
Kazuhiko Murakoshi
Shinjiro Saihara
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta 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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP16032287A priority Critical patent/JPS643622A/en
Publication of JPS643622A publication Critical patent/JPS643622A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors
    • G02B5/09—Multifaceted or polygonal mirrors, e.g. polygonal scanning mirrors; Fresnel mirrors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

PURPOSE:To obtain a rotating polygon mirror made of synthetic resin which has highly durable surface accuracy by varying the thickness of a plate-like part, which connects a boss part forming a hole in the center of the rotating polygon mirror to faces of the polyhedron, in the center and edge part of the surface. CONSTITUTION:The plate-like part 14 tangent to the mirror face part 11 is provided with a curved slope 30A, so that the molding pressure of resin can be uniformly applied to the center (a), an intermediate part (b) and an erect face part (c). Namely, as cross sections I-I-III-III show the center (a), the intermediate part (b) and the edge (c), respectively, slope lengths lambdaa, lambdab and lambdac are set so as to become gradually lower, although the thickness (t) of the bottom of the slope 30A is the same. The titled mirror is constituted so that the molding pressure of resin injected to each face of the mirror face part 11 can be kept uniform. Thus such troubles as the warp and deformation of the mirror face part, which have been difficult to circumvent at the time of molding resin, can be eliminated. Besides, weight of said mirror can be lightened to mass- produce the mirrors without imposing a burden on a drive system and a control system.
JP16032287A 1987-06-26 1987-06-26 Rotating polygon mirror Pending JPS643622A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16032287A JPS643622A (en) 1987-06-26 1987-06-26 Rotating polygon mirror

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16032287A JPS643622A (en) 1987-06-26 1987-06-26 Rotating polygon mirror

Publications (1)

Publication Number Publication Date
JPS643622A true JPS643622A (en) 1989-01-09

Family

ID=15712454

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16032287A Pending JPS643622A (en) 1987-06-26 1987-06-26 Rotating polygon mirror

Country Status (1)

Country Link
JP (1) JPS643622A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2240191A (en) * 1990-01-18 1991-07-24 Konishiroku Photo Ind Rotatable polygon mirror
JP2002371494A (en) * 2002-03-11 2002-12-26 Daiki:Kk Sanitary paper

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2240191A (en) * 1990-01-18 1991-07-24 Konishiroku Photo Ind Rotatable polygon mirror
US5134514A (en) * 1990-01-18 1992-07-28 Konica Corporation Rotatable polygon mirror
JP2002371494A (en) * 2002-03-11 2002-12-26 Daiki:Kk Sanitary paper

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