IR-CUT switching device

Abstract

The invention discloses an IR-CUT switching device which comprises a fixed base and a glass fixing frame. White glass and red glass are arranged in the glass fixing frame. The left and right sides of the glass fixing frame are provided with optical shafts. Guide blocks are respectively arranged at the edges of the left and right ends of the glass fixing frame. The optical shafts are respectively inserted into the guide holes of the guide blocks on the corresponding sides. The power output shaft of a stepper motor installed on the fixed base is connected with a drive screw. A movable shift block is arranged between the drive screw and the right guide block. The drive screw is embedded and inserted into a screw accommodating slot of the movable shift block, and is meshed with the screw teeth on the surface of the screw accommodating slot. The guide block on the right side of the glass fixing frame is embedded and clamped into a guide block clamping slot of the movable shift block. The fixed base is equipped with an FPC fixing block on the back side of the glass fixing frame. The FPC fixing block is equipped with an FPC. The IR-CUT switching device has the advantages of novel structure design, high precision, high bearing capacity, high stability and reliability, and good shock resistance.

Description

technical field [0001] The invention relates to the field of camera technology, in particular to an IR-CUT switching device. Background technique [0002] The IR-CUT double filter refers to a set of filters built in the camera lens group. When the infrared sensing point outside the lens detects the change in the intensity of the light, the built-in IR-CUT automatically switches the filter according to the external light. The strength of the filter will automatically switch accordingly, so that the image can achieve the best effect, that is to say, in day or night, the double filter can automatically switch the filter, so no matter in day or night, you can get the best image Effect. [0003] For the IR-CUT double filter, it mainly realizes filter switching through the IR-CUT switcher. Among them, for the existing IR-CUT switcher, in the actual use process, it has the following disadvantages: [0004] 1. Low control precision: there are only two fixed positions of on and of...

AI Technical Summary

Problems solved by technology

[0004] 1. Low control precision: there are only two fixed positions of on and off, there is no precision in the movement process, and the switch position precision is relatively low (related to component forming, assembly operations, switching times, fixture precision, etc.), and the precision is uncontrollable. Large driving error;

[0005] 2. Poor driving force: it can only drive single-chip or double-chip filters with small size, the carrying capacity is small, and because of the use of solenoid valves for driving, it is limited by the force arm & swing angle and the force of the movement space;

[0006] 3. Poor impact resistance and anti-interference ability: rely on static holding force to stay in a fixed position, and the static force is relatively small, so it can only be used in static or non-vibrating lenses and environments such as guns;

[0007] 4. Poor stability: due to the use of solenoid valves for driving and no guide post guidance, the driving stability and consistency are poor;

[0008] 5. Poor anti-vibration ability: it cannot be used for high-frequency vibration equipment

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