JPS643622A - Rotating polygon mirror - Google Patents
Rotating polygon mirrorInfo
- 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
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.
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)
| 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 |
-
1987
- 1987-06-26 JP JP16032287A patent/JPS643622A/en active Pending
Cited By (3)
| 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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