JPH0251471U - - Google Patents
Info
- Publication number
- JPH0251471U JPH0251471U JP13065888U JP13065888U JPH0251471U JP H0251471 U JPH0251471 U JP H0251471U JP 13065888 U JP13065888 U JP 13065888U JP 13065888 U JP13065888 U JP 13065888U JP H0251471 U JPH0251471 U JP H0251471U
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical
- objective lens
- lens barrel
- introduction groove
- constricted
- 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
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Blocking Light For Cameras (AREA)
- Prevention Of Fouling (AREA)
Description
第１図は本考案の一実施例を示す一部断面図、
第２図は従来の一例を示す構成図である。
１…かん合部、２…円筒部、３…絞り部、４…
空気注入部、５…ねじ穴、６…止めねじ、７…空
気導入溝、８…空気吹出溝、２０…対物レンズ。
FIG. 1 is a partial sectional view showing an embodiment of the present invention;
FIG. 2 is a configuration diagram showing a conventional example. 1...Mating part, 2...Cylindrical part, 3...Aperture part, 4...
Air injection part, 5... Screw hole, 6... Set screw, 7... Air introduction groove, 8... Air blowing groove, 20... Objective lens.
Claims (1)
物レンズ鏡筒部をおおう円筒状部材の一端に形成
した対物レンズ鏡筒部とかん合する円筒状かん合
部と、このかん合部の円筒面に設けたネジ穴と、
前記円筒状部材の他端に形成した端部の内径が細
くなる絞り部と、前記かん合部と前記絞り部との
間に形成した前記かん合部より大きな内径の円筒
部と、この円筒部の円筒面に設けた空気注入部と
、この空気注入部のある円筒部内周に円環状に設
けた空気導入溝と、この空気導入溝のある円筒部
から前記絞り部の端部まで内周にスペイラル状に
複数設けた空気吹出溝とを含んで構成される事を
特徴とする対物レンズ汚損防止キヤツプ。 A cylindrical fitting part that has approximately the same length as the objective lens barrel part and is formed at one end of a cylindrical member that covers the objective lens barrel part and that engages with the objective lens barrel part; A screw hole provided on the cylindrical surface of the
a constricted part formed at the other end of the cylindrical member and having a narrower inner diameter at the end; a cylindrical part formed between the mating part and the constricted part and having an inner diameter larger than the mating part; and this cylindrical part. an air injection part provided on the cylindrical surface of the cylinder, an annular air introduction groove provided on the inner periphery of the cylindrical part where the air injection part is located, and an air introduction groove provided on the inner periphery from the cylindrical part with this air introduction groove to the end of the constricted part. An objective lens stain prevention cap comprising a plurality of spiral air blowing grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13065888U JPH0251471U (en) | 1988-10-04 | 1988-10-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13065888U JPH0251471U (en) | 1988-10-04 | 1988-10-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0251471U true JPH0251471U (en) | 1990-04-11 |
Family
ID=31386024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13065888U Pending JPH0251471U (en) | 1988-10-04 | 1988-10-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0251471U (en) |
-
1988
- 1988-10-04 JP JP13065888U patent/JPH0251471U/ja active Pending
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