JPS60156525U - optical scanning device - Google Patents
optical scanning deviceInfo
- Publication number
- JPS60156525U JPS60156525U JP4465584U JP4465584U JPS60156525U JP S60156525 U JPS60156525 U JP S60156525U JP 4465584 U JP4465584 U JP 4465584U JP 4465584 U JP4465584 U JP 4465584U JP S60156525 U JPS60156525 U JP S60156525U
- Authority
- JP
- Japan
- Prior art keywords
- light
- hologram
- scanning device
- optical scanning
- reproduction
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来のホログラムを用いた光走査装置の要部構
成図、第２図は従来技術の光走査装置に用いられる２値
変調回路の構成図、第３図はホログラム・スキャナの光
学系の一構成図、第４図は発振波長の温度依存性を示し
た図、第５図は発振スペクトルの温度依存性を示した図
、第６図は本考案の具体的実施例である２値変調回路の
構成 ′図、第７図は記録（作製）時と再生（走査）
時の状態を示す全体斜視図、第８図、第９図は走査面上
に得られる走李スポットの直線性誤差収束スポット径及
び回折効率をそれぞれ調べた特性線図である。
１・・・物体光、２・・・参照光、３・・・ホログラム
・ディスク、３１，３２，３３・・・、３１０，３２０
゜３３０・・・ホログラム、４・・・走査面、５・・・
再生光、６・・・再生像、７・・・段差、ＬＤ・・・半
導体レーザ、９ 、・・・レンズ、ＬＤ・・・半
導体レーザ、１０・・・入射光、１１・・・回折光、１
２・・・走査線、１３・・・参照光源、１４・・・物体
光源、１５・・・再生光源。Fig. 1 is a block diagram of the main parts of a conventional optical scanning device using a hologram, Fig. 2 is a block diagram of a binary modulation circuit used in a conventional optical scanning device, and Fig. 3 is an optical system of a hologram scanner. Fig. 4 is a diagram showing the temperature dependence of the oscillation wavelength, Fig. 5 is a diagram showing the temperature dependence of the oscillation spectrum, and Fig. 6 is a binary diagram showing a specific embodiment of the present invention. Configuration of the modulation circuit Figure 1 and Figure 7 are for recording (creation) and playback (scanning).
FIGS. 8 and 9 are overall perspective views showing the current state, and are characteristic diagrams in which the linearity error convergence spot diameter and diffraction efficiency of the scanning spot obtained on the scanning surface were investigated, respectively. 1... Object light, 2... Reference light, 3... Hologram disk, 31, 32, 33..., 310, 320
゜330...Hologram, 4...Scanning plane, 5...
Reproduction light, 6... Reproduction image, 7... Step, LD... Semiconductor laser, 9... Lens, LD... Semiconductor laser, 10... Incident light, 11... Diffracted light ,1
2...Scanning line, 13...Reference light source, 14...Object light source, 15...Reproduction light source.
Claims (1)
調回路に接続された半導体レーザと、透過又は反射形ホ
ログラム・ディスクとから成る光走査装置において、 Ａ：前記２値変調回路は、低出力時に前記半導体レーザ
にバイアス電流を常時流す構成とし、Ｂ：前記透過又は
反射形ホ〒ダラム・ディスクに用いるホログラムは、ホ
ログラム作製時に用いる記録光（参照光、物体光）と再
生（走査）時に用いる再生光とを波長がそれぞれ異なっ
た発散光または収束光とし、これら記録光と再生光−の
各光源位置を前記ホログラム面に斜めに光ビームが入射
子る位置でかつそれぞれ異なった所定位置に準定し、結
像面上の再生像が直線・無収差走査する構成としたーこ
とを特徴とする光走査装置。[Claims for Utility Model Registration] An optical scanning device comprising a semiconductor laser connected to a binary modulation circuit that supplies a binary modulated current with low output and high output, and a transmission or reflection hologram disk, A: The binary modulation circuit is configured to constantly flow a bias current to the semiconductor laser when the output is low.B: The hologram used in the transmission or reflection type hologram disk is configured to have a recording light (reference light) used when producing the hologram. , object light) and reproduction light used during reproduction (scanning) are divergent or convergent lights with different wavelengths, and the respective light source positions of the recording light and reproduction light are set so that the light beams are incident on the hologram surface obliquely. An optical scanning device characterized in that the optical scanning device is configured such that the reconstructed image on the imaging plane scans in a straight line and without aberration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4465584U JPS60156525U (en) | 1984-03-28 | 1984-03-28 | optical scanning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4465584U JPS60156525U (en) | 1984-03-28 | 1984-03-28 | optical scanning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60156525U true JPS60156525U (en) | 1985-10-18 |
Family
ID=30557424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4465584U Pending JPS60156525U (en) | 1984-03-28 | 1984-03-28 | optical scanning device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60156525U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5647019A (en) * | 1979-09-25 | 1981-04-28 | Nec Corp | Aberration correcting method of hologram scanner |
| JPS572018A (en) * | 1980-06-06 | 1982-01-07 | Fujitsu Ltd | Light scanner |
-
1984
- 1984-03-28 JP JP4465584U patent/JPS60156525U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5647019A (en) * | 1979-09-25 | 1981-04-28 | Nec Corp | Aberration correcting method of hologram scanner |
| JPS572018A (en) * | 1980-06-06 | 1982-01-07 | Fujitsu Ltd | Light scanner |
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