Zoom lens assembly for a zoom camera
AssigneeSamsung Aerospace Industries, Ltd.
InventorYongkyoo Yoon
Life of this patent
Estimating the term…
Abstract
A zoom lens assembly for a zoom camera wherein a focal length can be varied with a front move barrel moving forward and backward from a guide barrel by the rotation of a cam barrel installed inside a camera body. This zoom lens assembly for a zoom camera includes an adhesive cement attached to the outer circumference of the cam barrel and a steel sheet coated on the adhesive cement in order to reduce the thickness of the outer circumference of the cam barrel considerably, and concurrently to improve the mechanical strength greatly; and a shading film and a shading member attached to the outer circumference of a shutter in order to block the external light permeating via the aperture between the front move barrel and the shutter.
Claims11
In a zoom lens assembly for a zoom camera including
- a cam barrel placed to be able to rotate on an outer circumference of a guide barrel inside a camera body;
- and
- a front move barrel placed inside said guide barrel, so that a focal length is varied, with the front move barrel moving forward and backward from said guide barrel by the rotation of said cam barrel:
- the improvement comprising;
- an adhesive cement having the shading effect adhered to the outer circumference of said cam barrel;
- a steel sheet coated on said adhesive cement;
- a shading film coated on the outer circumference of a shutter installed on said front move barrel;
- and
- a shading member attached to the outer circumference of said shading film.
In a zoom lens assembly for a zoom camera, the combination of
- a guide barrel for mounting on a camera body;
- a cam barrel of relatively thin thickness rotatably mounted on said guide barrel;
- a front move barrel reciprocally mounted inside said guide barrel and connected to said cam barrel for selectively moving reciprocally into and out of said guide barrel in response to rotation of said cam barrel on said guide barrel;
- a layer of adhesive cement on an outer surface of said cam barrel;
- and
- a thin layer of steel on said layer of adhesive cement for rigidifying said relatively thin cam barrel.
In a zoom lens assembly for a zoom camera, the combination of
- a guide barrel for mounting on a camera body;
- a cam barrel of relatively thin thickness rotatably mounted on said guide barrel;
- a front move barrel reciprocally mounted inside said guide barrel and connected to said cam barrel for selectively moving reciprocally into and out of said guide barrel in response to rotation of said cam barrel on said guide barrel;
- a layer of adhesive cement having a shading effect characteristic on an outer surface of said cam barrel;
- a layer of steel on said layer of cement for rigidifying said cam barrel;
- a shutter mounted within and projecting from said move barrel;
- and
- a shading film on an outer circumferential surface of said shutter.
In a zoom lens assembly for a zoom camera, the combination of
- a guide barrel for mounting on a camera body;
- a cam barrel of relatively thin thickness rotatably mounted on said guide barrel;
- a front move barrel reciprocally mounted inside said guide barrel and connected to said cam barrel for selectively moving reciprocally into and out of said guide barrel in response to rotation of said cam barrel on said guide barrel;
- a shutter mounted within and projecting from said move barrel;
- a shading film on an outer surface of said shutter;
- and
- an annular shading member mounted over said film in abutment with said move barrel to prevent external light from permeating between said shutter and said move barrel.
Dependencies are inferred from the claim text.