4 results about "Membrane mirror" patented technology

The invention relates to the technical field of medical instruments, in particular to a frameless amniotic membrane mirror device, a manufacturing method and a using method, and the frameless amniotic membrane mirror device comprises an amniotic membrane tissue layer and a biocompatible thin film layer formed by spraying a mixed solution of polymethyl acrylate and polyvinyl alcohol; the overall diameter of the device is 14 mm, the rise of the device is 6.2 + / -0.1 mm, and the device can be directly implanted into the ocular surface to cover the cornea without a frame support. The manufacturing method comprises the steps of amniotic membrane treatment, model eye forming, mixed solution preparation, membrane spraying and forming, trimming and sterilization. The application method relates to implantation after surface anesthesia, fitting observation and subsequent taking-out. Through the frameless conformal fitting design, the problems that an existing framed amniotic membrane mirror is displaced and cannot be worn by a patient with strong foreign body sensation and shallow conjunctival sac are solved, and meanwhile secondary trauma of a suture operation is avoided. And the residual film after the amniotic membrane is dissolved can continuously provide protection, and the amniotic membrane has the advantages of good fitness, high patient comfort, simplicity and convenience in operation and good safety.

Embodiments of the present disclosure relate to MEMS mirror systems with slow light beam deflection. A light beam deflection system is configured to transmit a light beam with a time-varying output deflection angle. The system includes a first resonant structure configured to oscillate about a first rotational axis with a first resonant frequency, a second resonant structure configured to oscillate about a second rotational axis with a second resonant frequency, wherein the first rotational axis is parallel to the second rotational axis, and the first resonant frequency and the second resonant frequency are different and define a predetermined frequency difference, and a drive circuit configured to generate a first drive signal to drive the first resonant structure while additionally generating a second drive signal to drive the second resonant structure, such that the output deflection angle of the light beam oscillates according to a beat pattern of a beat wave, extreme values of the beat wave being modulated and defined by a periodic envelope.

This application discloses a MEMS micromirror and its manufacturing method. The micromirror includes a substrate, a mirror surface, a drive comb pair, and an isolation component. A cavity is formed on the substrate, and the two ends of the mirror surface are fixed to the substrate by a support beam assembly arranged along the cross-sectional direction of the cavity. The mirror surface deflects around the support beam assembly under the drive of the drive comb pair. The surface of the drive comb pair is uniformly covered with an insulating layer deposited by low-temperature IBD ion beam. The isolation component includes a protrusion array disposed in the cavity. The protrusion array includes at least two protrusions arranged in a regular pattern. The protrusions support the mirror surface when it deflects to its lowest point and block the airflow caused by the mirror surface deflection. This can prevent contact discharge between the fixed and moving comb teeth when the micromirror is working, improve the service life and reliability of the product, effectively block the small airflow generated when the micromirror vibrates during operation, increase the wind resistance of the mirror surface, and significantly improve the stability of the micromirror.

The invention discloses an automatic splicing device and method for a large-diameter film reflecting mirror surface. The device comprises a rotating device, a vacuum adsorption device and an automatic pasting device. The mold is controlled to rotate according to a specific angle, the membrane in the membrane box is transferred and fixed to the mold through vacuum adsorption of the membrane, the pasting actuator is controlled through the six-axis mechanical arm, the suture joint of the two membranes is positioned through the visual module, and pasting is conducted along sutures from top to bottom. The two adjacent membranes adsorbed on the mold are automatically spliced together by using an adhesive tape along a sewing line, and the steps are repeated until the splicing work of the whole film mirror surface is completed, so that automatic splicing of the film mirror surface is realized, personal errors caused by manual splicing are avoided, the problem of insufficient efficiency of manual splicing is solved, and the production efficiency of the film mirror surface is improved. The surface shape precision and the film reflection mirror surface process efficiency are greatly improved, and a feasible measure can be provided by the method under the requirement of further improving the aperture of the film reflection mirror surface.