JPH035110U

JPH035110U -

Info

Publication number: JPH035110U
Application number: JP6465989U
Authority: JP
Priority date: 1989-06-01
Filing date: 1989-06-01
Publication date: 1991-01-18

Description

[Brief explanation of drawings]

第１図は、本考案の第１実施例を示すレンズ間
距離調整装置付レンズ構体であつて、第２図Ａお
よびＢのＸ−Ｘ断面図、第２図Ａ，Ｂは、上記第
１図のレンズ構体のレンズの支持部当接面を示す
もので、第２図Ａは第１図のＹ方向断面図、また
第２図Ｂは第１図のＺ方向断面図、第２図Ｃは、
上記第１図の第１実施例の変形例を示すレンズの
支持部当接面を示す平面図、第３図および第４図
Ａは、上記第１図の第１実施例の変形例を示すレ
ンズ構体の縦断面図、第４図Ｂ，Ｃは、上記第４
図Ａのレンズ構体のレンズの支持部当接面を示し
、第４図Ｂは第４図ＡのＹ方向断面図、また第４
図Ｃは第４図ＡのＺ方向断面図、第５図Ａは、本
考案の第２実施例を示すレンズ間距離調整装置付
レンズ構体の側面図、第５図Ｂは、上記第５図Ａ
のレンズ構体に用いられるカム部を有するレンズ
の斜視図、第５図Ｃは、上記第５図Ａのレンズ構
体のレンズ間距離調整状態における側面図、第６
図Ａ，Ｂは、上記第５図の第２実施例の変形例を
示すレンズ構体の側面図、第７図は、上記第５図
の第２実施例の別の変形例を示すレンズ構体の分
解斜視図、第８図Ａ，Ｂ，Ｃは、上記第５図の第
２実施例の更に別の変形例のレンズ構体を示すも
のであり、第８図Ａは上記レンズ構体の部分縦断
面図、また、第８図Ｂ，Ｃは、上記レンズ構体に
用いられるレンズの当接面を示す平面図、、第９
図Ａ，Ｂ，Ｃは、上記第１図のレンズ構体のレン
ズ間距離調整装置用突起の当接位置の標識を示す
要部の斜視図、第９図Ｄは、上記第５図のレンズ
構体のレンズ間距離調整装置用カムの当接位置表
示目盛部の要部斜視図、第１０図は、本考案のレ
ンズ間距離調整装置付レンズ構体が組込まれたレ
ンズ鏡筒の縦断面図、第１１図は、従来のレンズ
構体の縦断面図である。１，２，８，９……レンズ、１ａ，２ａ，８ａ
，９ａ……支持部、１ｂ，１ｃ，１ｄ，２ｂ，２
ｂ′……突起（レンズ間距離を可変にする手段）
、８ｃ，８ｄ，８ｅ，８ｆ，９ｃ，９ｄ，９ｅ，
９ｆ……カム（レンズ間距離を可変にする手段）
。 FIG. 1 shows a lens structure with an inter-lens distance adjusting device showing a first embodiment of the present invention, and FIGS. 2A is a sectional view in the Y direction in FIG. 1, FIG. 2B is a sectional view in the Z direction in FIG. 1, and FIG. 2C is a sectional view in the Z direction of FIG. teeth,
A plan view showing a contact surface of a support portion of a lens showing a modification of the first embodiment shown in FIG. 1 above; FIGS. 3 and 4A show a modification of the first embodiment shown in FIG. 1 above. The longitudinal cross-sectional views of the lens structure, FIGS.
4B shows a contact surface of the lens supporting portion of the lens structure in FIG. 4A, and FIG. 4B is a sectional view in the Y direction of FIG.
Figure C is a sectional view in the Z direction of Figure 4A, Figure 5A is a side view of a lens assembly with an inter-lens distance adjustment device showing a second embodiment of the present invention, and Figure 5B is a cross-sectional view of Figure 5A. A
FIG. 5C is a perspective view of a lens having a cam portion used in the lens structure of FIG. 5A, and FIG.
Figures A and B are side views of a lens structure showing a modification of the second embodiment shown in FIG. 5 above, and FIG. 7 is a side view of a lens structure showing another modification of the second embodiment shown in FIG. 5 above. Exploded perspective views, FIGS. 8A, B, and C show a lens structure of still another modification of the second embodiment shown in FIG. 5, and FIG. 8A is a partial longitudinal section of the lens structure. Also, FIGS. 8B and 8C are plan views showing the abutting surfaces of the lenses used in the lens structure.
Figures A, B, and C are perspective views of the main parts of the lens assembly shown in Figure 1 above, showing marks for the contact positions of the protrusions for adjusting the distance between lenses, and Figure 9D is the lens assembly shown in Figure 5 above. FIG. 10 is a perspective view of a main part of a contact position indicating scale of a cam for an inter-lens distance adjustment device of the present invention, and FIG. FIG. 11 is a longitudinal sectional view of a conventional lens structure. 1, 2, 8, 9...lens, 1a, 2a, 8a
, 9a...Support part, 1b, 1c, 1d, 2b, 2
b'...protrusion (means for varying the distance between lenses)
, 8c, 8d, 8e, 8f, 9c, 9d, 9e,
9f...Cam (means to vary the distance between lenses)
.

Claims

[Claims for Utility Model Registration] (1) An inter-lens distance adjusting device characterized in that a means for varying the inter-lens distance is provided on the abutment surface of the lens with a supporting portion. (2) The inter-lens distance adjusting device according to claim 1, wherein the means for making the inter-lens distance variable has a display means for indicating the inter-lens distance adjustment amount.