JPH0399337U - - Google Patents
Info
- Publication number
- JPH0399337U JPH0399337U JP752090U JP752090U JPH0399337U JP H0399337 U JPH0399337 U JP H0399337U JP 752090 U JP752090 U JP 752090U JP 752090 U JP752090 U JP 752090U JP H0399337 U JPH0399337 U JP H0399337U
- Authority
- JP
- Japan
- Prior art keywords
- polygon scanner
- lens
- reflected
- optical axis
- light beam
- 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
- 230000003287 optical effect Effects 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 1
Landscapes
- Testing Of Optical Devices Or Fibers (AREA)
- Mechanical Optical Scanning Systems (AREA)
Description
第１図は本考案による一実施例の構成図、第２
図は従来例の構成図、第３図は空気中で、空気の
密度が異なる場合の光ビームの波長と屈折率との
関係を示す図である。
１……光源、Ｇ１，Ｇ２，Ｇ３，Ｇ４，Ｇ５，
Ｇ６……ガラス、Ｐ２ａ，Ｐ２ｂ，Ｐ２ｃ……真
空パイプ、２ａ，２ｂ，２ｃ……パイプ、３……
ポリゴンスキヤナ、４……ｆθレンズ、５ａ，５
ｂ……プリズムミラー、６ａ，６ｂ，６ｃ，６ｄ
……センサ、Ｌ１，Ｌ２，Ｌ３……光ビーム。
Figure 1 is a configuration diagram of an embodiment of the present invention;
This figure is a configuration diagram of a conventional example, and FIG. 3 is a diagram showing the relationship between the wavelength of a light beam and the refractive index when the air density is different. 1...Light source, G1, G2, G3, G4, G5,
G6...Glass, P2a, P2b, P2c...Vacuum pipe, 2a, 2b, 2c...Pipe, 3...
Polygon scanner, 4...fθ lens, 5a, 5
b...Prism mirror, 6a, 6b, 6c, 6d
...Sensor, L1, L2, L3...Light beam.
Claims (1)
がポリゴンスキヤナ３によつて反射した光ビーム
Ｌ２がｆθレンズ４を通過してプリズムミラー５
ａによつて分割され、センサ６ａ，６ｂに等しい
パワーが検出される時刻と、光ビームＬ１がポリ
ゴンスキヤナ３によつて反射した光ビームＬ３が
ｆθレンズ４を通過してプリズムミラー５ｂによ
つて分割され、センサ６ｃ，６ｄに等しいパワー
が検出される時刻との間隔を測定して成るポリゴ
ンスキヤナジツタ測定装置において、 光源１からポリゴンスキヤナ３との間の光軸、
及びｆθレンズ４からプリズムミラー５ａとの間
の光軸、更にｆθレンズ４からプリズムミラー５
ｂとの間の光軸が貫通するように真空パイプＰ２
ａ，Ｐ２ｂ，Ｐ２ｃをそれぞれ配設したことを特
徴とするポリゴンスキヤナジツタ測定装置。[Claims for Utility Model Registration] Almost parallel light beam L1 emitted from light source 1
The light beam L2 reflected by the polygon scanner 3 passes through the fθ lens 4 and is reflected by the prism mirror 5.
a and the time when equal power is detected by the sensors 6a and 6b, and the time when the light beam L1 is reflected by the polygon scanner 3 and the light beam L3 passes through the fθ lens 4 and is reflected by the prism mirror 5b. In the polygon scanner jitter measuring device, which measures the interval between the time when equal power is detected by the sensors 6c and 6d, the optical axis between the light source 1 and the polygon scanner 3,
and the optical axis between the fθ lens 4 and the prism mirror 5a, and the optical axis between the fθ lens 4 and the prism mirror 5a.
Vacuum pipe P2 so that the optical axis between b and
A polygon scanner jitter measuring device characterized in that a, P2b, and P2c are respectively provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP752090U JPH0399337U (en) | 1990-01-31 | 1990-01-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP752090U JPH0399337U (en) | 1990-01-31 | 1990-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0399337U true JPH0399337U (en) | 1991-10-17 |
Family
ID=31511180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP752090U Pending JPH0399337U (en) | 1990-01-31 | 1990-01-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0399337U (en) |
-
1990
- 1990-01-31 JP JP752090U patent/JPH0399337U/ja active Pending