Dual-filter assembly and lens assembly

Abstract

The invention provides a dual-filter assembly and a lens assembly. The dual-filter assembly comprises a tray, a guide rod, a motor and a spring, wherein the tray is equipped with filters, one side ofthe tray is formed with a first guide member, a second side of the tray is formed with a second guide member, the guide rod is in movable connection with the first guide member, the spring is arrangedon an output rod of the motor in a penetration mode, two ends of the spring are fixedly connected with the output rod, the second guide member is sleeved outside the output rod and is in a spiral gapformed by the spring, and one end of the spring close to the motor is bent to be a limit structure. The dual-filter assembly is advantaged in that switching limit of the tray is achieved through thelimit structure formed by a tail end of the spring, a problem of no switching or defective product flowing-out phenomena caused by dead clamping of a lens arriving at an initial end of the motor as alens tray surpasses the stroke of the motor when a tray is switched on the motor to the tail end in the prior art is solved, and production line yield is improved, and a product to terminal client quality problem is eliminated.

Description

technical field [0001] The invention relates to the technical field of cameras, in particular to a double filter assembly and a lens assembly. Background technique [0002] The IR CUT (double filter) spring assembly is a component assembled in the IR CUT, and it is an auxiliary tool for switching the IR CUT (filter). It is suitable for security surveillance cameras with this type of IR-CUT. At present, this kind of IR-CUT double filter refers to a set of filters built in the camera lens group. When the infrared sensor point outside the lens detects the change of light intensity, the built-in IR-CUT is switched by the motor to filter. The mirror can automatically switch according to the intensity of the external light, 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, the best imaging effect can be obtained. [0003] However, in the current double filter assemb...

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Problems solved by technology

[0003] However, in the current double filter assembly, when the lens tray is switched back and forth in the spring above the motor, the lens tray near the motor end is not limited. No switching action; when the spring is inserted on the motor shaft, the L foot of the spring should be flush with the starting point of the motor shaft, but there is no limit, and it is not easy to solder

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