JPH0390212U

JPH0390212U -

Info

Publication number: JPH0390212U
Application number: JP15219389U
Authority: JP
Priority date: 1989-12-29
Filing date: 1989-12-29
Publication date: 1991-09-13

Description

[Brief explanation of drawings]

第１図はこの考案を携帯用小形撮像装置に適用
した光学装置の要部の一例を示す斜視図、第２図
は反射体の図、第３図はズーム位置検出手段の図
、第４図はズーム位置検出出力の関係を示す図、
第５図はビユーフアインダへの表示例を示す図、
第６図は光学装置の回路系の具体例を示すブロツ
ク図、第７図は反射体の他の例を示す図である。１０……光学装置、１４……ズームレンズ、１
６……ズーム鏡胴、２４……保護ケース、３０…
…ズーム駆動機構、４０……ズーム位置検出手段
、４２……反射体、４４……光学検出手段、６０
……ビユーフアインダ。 Fig. 1 is a perspective view showing an example of the essential parts of an optical device in which this invention is applied to a small portable imaging device, Fig. 2 is a view of a reflector, Fig. 3 is a view of a zoom position detection means, and Fig. 4 is a diagram showing the relationship between zoom position detection output,
FIG. 5 is a diagram showing an example of display on the viewfinder,
FIG. 6 is a block diagram showing a specific example of the circuit system of the optical device, and FIG. 7 is a diagram showing another example of the reflector. 10...Optical device, 14...Zoom lens, 1
6...zoom lens barrel, 24...protective case, 30...
...Zoom drive mechanism, 40...Zoom position detection means, 42...Reflector, 44...Optical detection means, 60
...Beef indah.

Claims

[Claim for Utility Model Registration] A reflector whose reflectance differs in the direction of rotation of the zoom lens is attached to a part of the outer surface of the lens barrel of the zoom lens, and the reflector is opposed to the reflector. An optical device with a zoom position detection function, characterized in that an optical detection means is disposed at a position, and a zoom position output corresponding to a zoom position of the zoom lens is obtained from the optical detection means.