JPS59147106U - objective lens device - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の対物レンズ装置を示す組立て斜視図と
断面図、第２図は本考案の他の実施例を示す組立て斜視
図と断面図である。 １・・・・・・対物レンズ鏡筒、ｌａ・・・・・・対物
レンズ、２・・・・・・対物レンズ保持筒、３・・・・
・・軸受、４・・・・・・支軸、５ａ、　　５ｂ・・・
・・・軸受、６・・・・・・軸受保持筒。FIG. 1 is an assembled perspective view and a sectional view showing an objective lens device of the present invention, and FIG. 2 is an assembled perspective view and a sectional view showing another embodiment of the present invention. 1...Objective lens barrel, la...Objective lens, 2...Objective lens holding tube, 3...
...Bearing, 4...Spindle, 5a, 5b...
...bearing, 6...bearing holding cylinder.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 支軸のまわりに回動可能でかつ上記支軸の軸線方向に摺
動可能に構成された対物レンズ保持筒と前記対物レンズ
保持筒に、上記支軸から離間して対物レンズが設けられ
た対物レンズ装置に於て、前記対物レンズ保持筒に、支
軸を挿入するための軸受が設けられ、前記軸受はセラミ
ックスあるいは、単結晶材料によって成形され、前記支
軸のうち少なくとも前記軸受と接する部分は、超硬合金
やセラミックスで構成され又は、金続材料やプラスチッ
ク材料に表面硬化処理が施こされていることを特徴とす
る対物レンズ装置。An objective lens holding tube configured to be rotatable around a support shaft and slidable in the axial direction of the support shaft, and an objective lens provided in the objective lens holding tube at a distance from the support shaft. In the lens device, the objective lens holding cylinder is provided with a bearing for inserting the support shaft, the bearing is molded from ceramics or a single crystal material, and at least a portion of the support shaft that is in contact with the bearing is An objective lens device characterized in that it is made of cemented carbide or ceramics, or is made of metal or plastic material that has been subjected to surface hardening treatment.