Abstract: The lens loosening test device includes a frame, a testing module, and a testing picture card. The testing module includes a base, a rotating drive component, a rotating bracket connected to and driven by the rotating drive component, a knocking component fixed to the rotating bracket, an imaging component, and a fixing component. The fixing component is configured to fix the lens to be tested to enable the lens to be tested to be arranged at top of the imaging component, the knocking component is configured to knock the lens to be tested, and the imaging component is configured to capture an image of the testing picture card by the lens to be tested and determine whether the lens to be tested is loose or not based on the image. The present application can accurately detect whether the lens is loose or not.

Abstract: The lens loosening test system includes a processing module, an acquisition module, a speaker, a microphone, and a fixing module. The fixing module is configured to place and fix the lens to be tested. The processing module is configured to send an excitation signal to the acquisition module. The acquisition module is configured to excite the speaker based on the excitation signal. The speaker is configured to generate vibration to drive the lens to be tested to vibrate and generate an audio signal. The microphone is configured to receive and transmit the audio signal to the acquisition module. The acquisition module is further configured to output the audio signal to the processing module. The processing module is further configured to determine whether the lens to be tested is loose or not based on the audio signal. The present application can accurately detect whether the lens is loose or not.

Abstract: The present invention provides an optical lens and an assembly method thereof The optical lens includes: a first lens barrel; a second lens barrel arranged with a first mounting portion protruding toward the first lens barrel; a first lens, comprising a first object side facing a light incident end of the optical lens, a first image side facing a light exit end of the optical lens, and a first side wall connecting the first object side and the first image side; wherein the first lens is sandwiched between the first lens barrel and the second lens barrel; the first mounting portion is arranged around the first lens and spaced from the first side wall to define a glue-holding slot; a first adhesive material, arranged between the first image side and the second lens barrel; and a second adhesive material, arranged in the glue-holding slot. In this way, the first lens can be prevented from deforming or breaking, i.e., the lateral shear strength of the optical lens can be improved.