JPH0451624U - - Google Patents
Info
- Publication number
- JPH0451624U JPH0451624U JP9341890U JP9341890U JPH0451624U JP H0451624 U JPH0451624 U JP H0451624U JP 9341890 U JP9341890 U JP 9341890U JP 9341890 U JP9341890 U JP 9341890U JP H0451624 U JPH0451624 U JP H0451624U
- Authority
- JP
- Japan
- Prior art keywords
- reflector
- rotating member
- rotation
- light
- slit
- 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
- 238000001514 detection method Methods 0.000 claims description 13
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Optical Transform (AREA)
Description
第１図は本考案を適用した反射鏡式偏向器の全
体構成を示す概略図、第２図は第１図の偏向器に
おける角度検出機構を示す正面図、第３図は第１
図の角度検出機構の側面図、第４図は第１図の位
置検出素子の構成図、第５図は第１図の位置検出
素子の駆動制御回路のブロツク図、第６図は従来
の角度検出装置を示す構成図である。
符号の説明、１１……反射鏡、１２……光源、
１３……回転軸、１４……アクチユエータ、１４
１……調和歯車変速機、１４２……ピエゾアクチ
ユエータ、２１……回転スリツト円板、２２……
スリツト、２３……ＬＥＤランプ、２４……半導
体位置検出素子。
Fig. 1 is a schematic diagram showing the overall configuration of a reflector type deflector to which the present invention is applied, Fig. 2 is a front view showing the angle detection mechanism in the deflector of Fig. 1, and Fig. 3 is a
Figure 4 is a block diagram of the position detection element in Figure 1, Figure 5 is a block diagram of the drive control circuit for the position detection element in Figure 1, and Figure 6 is a conventional angle detection mechanism. FIG. 2 is a configuration diagram showing a detection device. Explanation of symbols, 11...Reflector, 12...Light source,
13... Rotating shaft, 14... Actuator, 14
DESCRIPTION OF SYMBOLS 1... Harmonic gear transmission, 142... Piezo actuator, 21... Rotating slit disk, 22...
Slit, 23...LED lamp, 24...semiconductor position detection element.
Claims (1)
回転させる回転駆動手段とを有する反射鏡式偏向
器において、前記反射鏡の回転中心軸を中心とし
てこの反射鏡と一体となつて回転する回転部材と
、この回転部材の一方の側における定まつた位置
に配置した角度検出用光源と、前記回転部材の反
対側において前記角度検出用光源に対向する位置
に配置した光入射位置検出素子と、これら角度検
出用光源および光入射位置検出素子によつて挟ま
れている前記回転部材の部分に形成されたスリツ
トとを有し、このスリツトは、前記回転部材の回
転量に応じて前記光入射位置検出素子に対峙する
スリツト部分の位置が移動する形状に設定されて
おり、前記光入射位置検出素子は、スリツト部分
を通過した通過光の入射位置を検知可能な素子て
あり、この光入射位置検出素子の出力から前記反
射鏡の回転角度を検出することを特徴とする角度
検出装置。 In a reflector type deflector having a rotatably supported reflector and a rotation drive means for rotating the reflector, the reflector rotates integrally with the reflector about the central axis of rotation of the reflector. a member, a light source for angle detection arranged at a fixed position on one side of the rotating member, and a light incident position detection element arranged at a position opposite to the light source for angle detection on the opposite side of the rotating member; A slit is formed in a portion of the rotating member sandwiched between the angle detection light source and the light incident position detecting element, and the slit adjusts the light incident position according to the amount of rotation of the rotating member. The position of the slit portion facing the detection element is set in a shape that moves, and the light incidence position detection element is an element capable of detecting the incidence position of the passing light that has passed through the slit portion. An angle detection device characterized in that the rotation angle of the reflecting mirror is detected from the output of the element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9341890U JPH0451624U (en) | 1990-09-05 | 1990-09-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9341890U JPH0451624U (en) | 1990-09-05 | 1990-09-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0451624U true JPH0451624U (en) | 1992-04-30 |
Family
ID=31830609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9341890U Pending JPH0451624U (en) | 1990-09-05 | 1990-09-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0451624U (en) |
-
1990
- 1990-09-05 JP JP9341890U patent/JPH0451624U/ja active Pending
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