Color changeable antitheft door cat's eye

Abstract

The invention discloses a color changeable antitheft door cat's eye. The cat's eye comprises a first frame, a first watching opening is formed in the external surface in one side of the first frame, afirst convex lens is fixedly mounted inside the first frame, a connecting column is fixedly mounted in the external surface in the other side of the first frame, a focusing tube is fixedly mounted inthe end, far from the first frame, of the connecting column, and a connecting sleeve is in threaded connection to the outside of the focusing tube. Via the color changeable antitheft door cat's eye,a user is avoided from forgetting closing a cat's eye cover, the safe effect of the cat's eye is better, a theft is prevented from determining whether there is person indoor and making a theft behavior by watching indoor light, shade and shadow change, the cat's eye is fixed in the inside of a door, the theft is prevented from dismounting the cat's eye and opening the antitheft door via an installation hole, and use of the cat's eye is safer.

Description

technical field [0001] The invention relates to the field of cat's eye, in particular to a color-changing cat's eye for an anti-theft door. Background technique [0002] The cat's eye is a kind of door mirror installed on the anti-theft door. It is composed of a concave lens and a convex lens. The indoor residents can see the people outside the door through the cat's eye to decide whether to open the door. Safety, the cat eye cover on the existing cat eye needs to be closed manually by the user, there is a situation that the user forgets to close the cat eye cover, and the security effect of the cat eye is even worse, there is a situation that the thief can peep into the room from the outside, and it is still impossible The cat's eye is fixed on the inside of the door, and there is a situation that the thief disassembles the cat's eye and opens the anti-theft door through the mounting hole outside, which brings certain influence to the use of the cat's eye. Contents of the...

AI Technical Summary

Problems solved by technology

[0002] The cat's eye is a kind of door mirror installed on the anti-theft door. It is composed of a concave lens and a convex lens. The indoor residents can see the people outside the door through the cat's eye to decide whether to open the door. Safety, the cat eye cover on the existing cat eye needs to be closed manually by the user, there is a situation that the user forgets to close the cat eye cover, and the security effect of the cat eye is even worse, there is a situation that the thief can peep into the room from the outside, and it is still impossible Fix the cat's eye inside the door, and there is a situation where the thief removes the cat's eye from the outside and opens the anti-theft door through the installation hole, which has a certain impact on the use of the cat's eye

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