JPS6440923A - Optical unit - Google Patents
Optical unitInfo
- Publication number
- JPS6440923A JPS6440923A JP19849087A JP19849087A JPS6440923A JP S6440923 A JPS6440923 A JP S6440923A JP 19849087 A JP19849087 A JP 19849087A JP 19849087 A JP19849087 A JP 19849087A JP S6440923 A JPS6440923 A JP S6440923A
- Authority
- JP
- Japan
- Prior art keywords
- housing
- light beam
- scanning device
- beam scanning
- optical
- 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)
Abstract
PURPOSE:To preclude dew condensation due to a temperature difference from atmospheric temperature by constituting an optical unit by putting optical elements which constitute the optical system of a light beam scanning device in a housing. CONSTITUTION:The housing 12 which contains the optical elements constituting the optical system of the light beam scanning device is covered with a heat generation body 14 and this housing 12 is covered with a heat insulation member 16. Then the temperature in the housing 12 is held within a temperature range wherein no dew condensation is caused at all times after the light beam scanning device is installed. Consequently, no dew is formed on the optical elements in the optical unit 10 even if the atmospheric temperature varies abruptly while the light beam scanning device is in scanning operation or not in the scanning operation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19849087A JPS6440923A (en) | 1987-08-07 | 1987-08-07 | Optical unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19849087A JPS6440923A (en) | 1987-08-07 | 1987-08-07 | Optical unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6440923A true JPS6440923A (en) | 1989-02-13 |
Family
ID=16391985
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19849087A Pending JPS6440923A (en) | 1987-08-07 | 1987-08-07 | Optical unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6440923A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4976527A (en) * | 1988-08-26 | 1990-12-11 | Fuji Photo Film Co., Ltd. | Beam-combining laser beam source device |
JPH03154019A (en) * | 1989-11-13 | 1991-07-02 | Fuji Photo Film Co Ltd | Resonance frequency stabilizing method and resonance type optical deflector |
US5216544A (en) * | 1988-08-26 | 1993-06-01 | Fuji Photo Film Co., Ltd. | Beam-combining laser beam source device |
US5729003A (en) * | 1995-12-27 | 1998-03-17 | Intermec Corporation | Apparatus for preventing formation of condensation on an electrooptical scanner window |
JP2010002824A (en) * | 2008-06-23 | 2010-01-07 | Ricoh Co Ltd | Optical scanning device and image forming apparatus |
JP2016011982A (en) * | 2014-06-27 | 2016-01-21 | 船井電機株式会社 | Projector and head-up display device |
-
1987
- 1987-08-07 JP JP19849087A patent/JPS6440923A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4976527A (en) * | 1988-08-26 | 1990-12-11 | Fuji Photo Film Co., Ltd. | Beam-combining laser beam source device |
US5216544A (en) * | 1988-08-26 | 1993-06-01 | Fuji Photo Film Co., Ltd. | Beam-combining laser beam source device |
JPH03154019A (en) * | 1989-11-13 | 1991-07-02 | Fuji Photo Film Co Ltd | Resonance frequency stabilizing method and resonance type optical deflector |
US5729003A (en) * | 1995-12-27 | 1998-03-17 | Intermec Corporation | Apparatus for preventing formation of condensation on an electrooptical scanner window |
JP2010002824A (en) * | 2008-06-23 | 2010-01-07 | Ricoh Co Ltd | Optical scanning device and image forming apparatus |
JP2016011982A (en) * | 2014-06-27 | 2016-01-21 | 船井電機株式会社 | Projector and head-up display device |
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