JPH0433025U - - Google Patents
Info
- Publication number
- JPH0433025U JPH0433025U JP7476090U JP7476090U JPH0433025U JP H0433025 U JPH0433025 U JP H0433025U JP 7476090 U JP7476090 U JP 7476090U JP 7476090 U JP7476090 U JP 7476090U JP H0433025 U JPH0433025 U JP H0433025U
- Authority
- JP
- Japan
- Prior art keywords
- projection lens
- focus ring
- protrusion
- holding cylinder
- focusing device
- 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 1
Landscapes
- Projection-Type Copiers In General (AREA)
- Focusing (AREA)
Description
第１図〜第５図は本考案の投影レンズ合焦装置
の一実施例を示し、第１図は左半分を縦断して示
した正面図、第２図はマイクロフイルムリーダー
プリンタの全体概略構成図、第３図はフオーカス
リングの下面図、第４図は保持筒体の平面図、第
５図は要部を拡大して示した部分断面側面図、第
６図は他の実施例における第５図と同様の部分断
面側面図である。
４……投影レンズ、１１……保持筒体、１４…
…ねじ、１５……フオーカスリング、１８，２０
……突起部。
FIGS. 1 to 5 show an embodiment of the projection lens focusing device of the present invention, FIG. 1 is a front view of the left half taken longitudinally, and FIG. 2 is a general schematic configuration of a microfilm reader printer. 3 is a bottom view of the focus ring, FIG. 4 is a plan view of the holding cylinder, FIG. 5 is a partially sectional side view showing an enlarged main part, and FIG. 6 is a view of another embodiment. FIG. 6 is a partially sectional side view similar to FIG. 5; 4... Projection lens, 11... Holding cylinder, 14...
...Screw, 15...Focus ring, 18,20
……protrusion.
Claims (1)
スリングにて投影レンズを光軸方向に位置調整可
能に保持した投影レンズの合焦装置において、 保持筒体とフオーカスリングの軸方向の対向面
に、互い周方向に係合可能に突起部を設け、前記
対向面同士の間にすきまができた状態で、 突起部同士が係合し、その係合部の当たり高さ
がねじピツチより小さくなるように突起部を設け
た ことを特徴とする投影レンズの合焦装置。[Scope of Claim for Utility Model Registration] A focusing device for a projection lens in which a projection lens is held in a position adjustable in the optical axis direction by a holding cylinder and a focus ring screwed onto the holding cylinder, Protrusions are provided on axially opposing surfaces of the focus ring and the focus ring so that they can engage with each other in the circumferential direction, and the protrusions engage with each other with a gap created between the opposing surfaces. 1. A focusing device for a projection lens, characterized in that a protrusion is provided such that the contact height of the protrusion is smaller than the screw pitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7476090U JPH0433025U (en) | 1990-07-12 | 1990-07-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7476090U JPH0433025U (en) | 1990-07-12 | 1990-07-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0433025U true JPH0433025U (en) | 1992-03-18 |
Family
ID=31614738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7476090U Pending JPH0433025U (en) | 1990-07-12 | 1990-07-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0433025U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07133622A (en) * | 1993-11-09 | 1995-05-23 | Ando Kensetsu Kk | Washbowl for infants |
-
1990
- 1990-07-12 JP JP7476090U patent/JPH0433025U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07133622A (en) * | 1993-11-09 | 1995-05-23 | Ando Kensetsu Kk | Washbowl for infants |