JPS6258706U - - Google Patents
Info
- Publication number
- JPS6258706U JPS6258706U JP13259485U JP13259485U JPS6258706U JP S6258706 U JPS6258706 U JP S6258706U JP 13259485 U JP13259485 U JP 13259485U JP 13259485 U JP13259485 U JP 13259485U JP S6258706 U JPS6258706 U JP S6258706U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- fixed
- pattern
- reflective surfaces
- light
- 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
- 239000011347 resin Substances 0.000 claims 1
- 229920005989 resin Polymers 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Optical Transform (AREA)
- Lens Barrels (AREA)
Description
第１図は本考案の検知装置を適用したレンズ鏡
筒の断面図。第２図は本考案の検知装置の展開斜
視図。第３図は要部断面図。第４図ａ・ｂはマス
ク１８Ｃの在る場合と無い場合の受光素子の出力
波形図。
１２……距離リング、１８Ａ……保持枠、１８
ａ１・１８ａ２……発光用及び受光用窓、１８ａ
３〜１８ａ６……信号線、１８Ｂ……反射パター
ン。
FIG. 1 is a sectional view of a lens barrel to which the detection device of the present invention is applied. FIG. 2 is an exploded perspective view of the detection device of the present invention. Figure 3 is a sectional view of the main part. FIGS. 4a and 4b are output waveform diagrams of the light receiving element with and without the mask 18C. 12...Distance ring, 18A...Holding frame, 18
a 1 , 18a 2 ... Light emitting and light receiving window, 18a
3 to 18a 6 ...Signal line, 18B...Reflection pattern.
Claims (1)
中間筒と螺合する移動リングに結合し手動操作に
より前記レンズを移動する距離リングを固定筒の
内側に嵌装し、前記距離リングの外周の光軸まわ
りに反射面と非反射面を交互に配列したパターン
を固定し、固定筒の内側に発光素子と受光素子を
樹脂封止した保持枠を固定し、前記パターンの近
傍に前記反射面と略同一の幅寸法の複数の開口を
設けたマスクを配置したことを特徴とするレンズ
の移動量を検出する装置を備えたレンズ鏡筒。 A distance ring that is connected to a movable ring that is rotated by an ultrasonic sweater and screwed into an intermediate cylinder that holds a lens, and that moves the lens by manual operation is fitted inside a fixed cylinder, and the light on the outer periphery of the distance ring is A pattern in which reflective surfaces and non-reflective surfaces are arranged alternately around the axis is fixed, a holding frame in which a light emitting element and a light receiving element are sealed with resin is fixed inside the fixing tube, and the reflective surface and the like are fixed in the vicinity of the pattern. A lens barrel equipped with a device for detecting the amount of movement of a lens, characterized in that a mask having a plurality of apertures having the same width is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13259485U JPS6258706U (en) | 1985-08-30 | 1985-08-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13259485U JPS6258706U (en) | 1985-08-30 | 1985-08-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6258706U true JPS6258706U (en) | 1987-04-11 |
Family
ID=31032128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13259485U Pending JPS6258706U (en) | 1985-08-30 | 1985-08-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6258706U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011099869A (en) * | 2011-01-17 | 2011-05-19 | Canon Inc | Optical encoder |
-
1985
- 1985-08-30 JP JP13259485U patent/JPS6258706U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011099869A (en) * | 2011-01-17 | 2011-05-19 | Canon Inc | Optical encoder |