JPS5499645A - Optical point scanning device - Google Patents
Optical point scanning deviceInfo
- Publication number
- JPS5499645A JPS5499645A JP700278A JP700278A JPS5499645A JP S5499645 A JPS5499645 A JP S5499645A JP 700278 A JP700278 A JP 700278A JP 700278 A JP700278 A JP 700278A JP S5499645 A JPS5499645 A JP S5499645A
- Authority
- JP
- Japan
- Prior art keywords
- plane
- mirror
- polarized
- optical
- rotating polyhedral
- 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
- Mechanical Optical Scanning Systems (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
Abstract
PURPOSE: To make the diameter of optical point always constant at any position of scanning line, by constituting the condenser system to the plane of projection with a volume hologram.
CONSTITUTION: The light beam emitted from a laser beam source 1 receives a modulation signal from an ultrasonic light modulating element 2, and is modulated in strength. This strength-modulated optical beam runs through a beam shaping lens system 3 and a plane mirror 7, and enters a rotating polyhedral mirror 4. The optical beam entering from the plane mirror 7 is polarized by this rotating polyhedral mirror 4. This polarized optical beam enters a volume hologram 13 of a recording medium 8. When the light polarized by the rotating polyhedral mirror 4 scans on the recording medium 8, it reconstructs the volume holograms 13 arranged in a row successively, and reconstructed images scan on the plane of projection 6. Thus, the condenser system is constituted with volume holograms, so that the diameter of optical point may be constant at any position on the scanning line.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP700278A JPS5499645A (en) | 1978-01-24 | 1978-01-24 | Optical point scanning device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP700278A JPS5499645A (en) | 1978-01-24 | 1978-01-24 | Optical point scanning device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5499645A true JPS5499645A (en) | 1979-08-06 |
Family
ID=11653868
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP700278A Pending JPS5499645A (en) | 1978-01-24 | 1978-01-24 | Optical point scanning device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5499645A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6125119A (en) * | 1984-07-14 | 1986-02-04 | Fujitsu Ltd | Laser scanner |
-
1978
- 1978-01-24 JP JP700278A patent/JPS5499645A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6125119A (en) * | 1984-07-14 | 1986-02-04 | Fujitsu Ltd | Laser scanner |
JPH0449689B2 (en) * | 1984-07-14 | 1992-08-12 | Fujitsu Ltd |
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