Projection device

Abstract

A projecting device comprises a fixed base, a mobile component, a lens, a bare engine and an actuating component. A plane is arranged on the fixed base which comprises a first fixing part and a first connection part; the mobile component comprises a driving connection part and a second fixing part, and the second fixing part is connected with the first fixing part and can slide along the plane; the lens is fixed on the second fixing part; the bare engine is rightly direct to the lens and is fixed on the first fixing part; the actuating component comprises a driving part and a second connection part connected with the driving part, the driving part is connected with the actuating connection part, and the second connecting part is connected with the first connection part; and when the driving part swings relatively to the fixed base, the driving part ensures that the mobile component slides long the plane through the driving connection part. The invention can ensure that the relative shift is generated between the projecting lens and the bare engine, thereby a user can conveniently operate the actuating component from the outside of the casing body of the projector without adjusting and operating the casing body or other components such as a supporting foot rest.

Description

technical field [0001] The present invention relates to a projection device with a movable lens, and in particular to a projection device with a fine-tuning mechanism. Background technique [0002] In the prior art, in order for the projector to correctly project a clear, properly sized, and skew-free image, it is often necessary to adjust the position and projection angle of the projection lens of the projector. However, the projection system (optical engine and projection lens) of a traditional projector is fixed on the projector housing, so if the projection position, angle, etc. are to be adjusted, the entire projector needs to be moved. Wherein, the adjustment of the up and down angles is mostly realized by rotating the support tripod supporting the projector housing, and the adjustment of the left and right angles is mostly achieved by directly moving the projector housing by hand. In addition to the lack of adjustment accuracy, this adjustment method needs to be adju...

AI Technical Summary

Problems solved by technology

In addition to the lack of adjustment accuracy, this adjustment method needs to be adjusted again every time the projector is used, and the vertical and horizontal offsets cannot be adjusted at the same time, which is very inconvenient to use

Especially for larger or heavier projectors, the aforementioned problem of difficult adjustment will become more serious.

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