8 results about "Annular aperture" patented technology

The invention relates to an assembly comprising: - a first relief (154) formed in a side wall of the ring (102) and comprising a first inclined face (162b), - a second relief (156) formed in a side wall of the part (34) and comprising a second inclined face (163a), and - an annular bore (155) that extends completely around an axis of revolution of the ring and opens out: -- in a front plane (110) so as to form an annular opening (160) which extends continuously over 360° around the axis of revolution and through which a curable material can be injected into a cavity at any location around the axis of revolution, and -- in a rear plane (108), into the cavity in order to fluidically connect it to the annular opening (160).

The invention relates to an MEMS microphone and a layout manufacturing method of a sound hole photolithography mask thereof. The method comprises the following steps: acquiring the number of turns of sound holes of a back plate, the size of a specific circle and a center distance design value of adjacent sound holes; obtaining the size of each circle according to the number of circles of the sound holes, the size of the specific circle and the center distance design value of the adjacent sound holes; according to the size of each circle and the center distance design value of the adjacent sound holes, the number of the sound holes of each circle is obtained; according to the number of the sound holes in each circle and the size of each circle, center coordinates of each sound hole are obtained; the sizes of the sound holes are obtained, and graphs of the sound holes are generated by combining the center coordinates of the sound holes; wherein each sound hole is a circular hole or an annular hole. According to the method, the layout design of the approximately equidistant graphs distributed in concentric circles can be quickly and accurately realized. The backboard prepared by using the layout of the sound hole photoetching plate accords with the Fresnel lens principle and meets the requirement of sharing the same mass center, and the capability of collecting sound waves can be greatly improved. And the number of the sound holes in each circle is not limited to a specific value.

The application relates to the packaging technical field and provides a substrate assembly, a preparation method of the substrate assembly, a packaging substrate, a packaging structure and electronic equipment. The preparation method of the substrate assembly comprises the following steps: providing a glass substrate, the glass substrate comprising a first glass substrate and a second glass substrate which are arranged in a stack; preparing an annular hole in the first glass substrate, the annular hole penetrating through the first glass substrate, the first glass substrate forming a glass column located on the inner circumferential side of the annular hole, and the second glass substrate covering the glass column; preparing a first buffer layer in the annular hole; removing the second glass substrate; and removing the glass column to form a first through hole. The preparation method provided by the application can naturally form the first through hole at the position of the glass column after the glass column is removed, so that secondary punching is not needed, and the thickness uniformity of the first buffer layer in the circumferential direction of the first through hole is improved, so that the buffering effect of the first buffer layer is improved.

The application relates to the packaging technical field and provides a substrate assembly, a preparation method of the substrate assembly, a packaging substrate, a packaging structure and electronic equipment. The preparation method of the substrate assembly comprises the following steps: providing a glass substrate, the glass substrate comprising a first surface and a second surface opposite to each other; preparing a sacrifice layer on the first surface; preparing an annular hole on the second surface, the annular hole penetrating through the glass substrate, the glass substrate forming a glass column located on the inner circumferential side of the annular hole, and the glass column being connected with the sacrifice layer; preparing a first buffer layer in the annular hole; and removing the sacrifice layer and the glass column to form a first through hole. The preparation method provided by the application can form an annular hole on the glass substrate, then prepare an annular first buffer layer in the annular hole, and naturally form a first through hole after the sacrifice layer and the glass column are removed, so that secondary punching is not needed, and the thickness uniformity of the first buffer layer in the circumferential direction of the first through hole is improved, so that the buffering effect of the first buffer layer is improved.

The utility model belongs to engineering design technical field especially for a kind of measuring device for engineering design, including fixed base, the fixed base bottom is equipped with three groups of adjusting assembly, the fixed base upper end is equipped with annular hole, the annular hole is rotatably connected with annular seat, the upper end of annular seat is equipped with mounting plate, the upper end of mounting plate is equipped with laser measuring instrument, the outer surface of mounting plate is equipped with a group of jack, the fixed base is equipped with limit component;The adjusting assembly includes support plate, the support plate is slidably connected with sliding block, the upper end of sliding block is equipped with two through plates, the through plate is slidably connected with support plate.The utility model is through the setting of adjusting assembly, can level device, applicable to use under a variety of environments, improve stability and measurement effect;And through the setting of limit component, the angle of laser measuring instrument can be adjusted, and then reach the purpose of facilitating adjustment measurement angle, improve flexibility.

The invention relates to a reflection optic (1) for focusing electromagnetic radiation (300) into a focal plane (100), comprising at least the following components: - A central stop (12) arranged on an optical axis (200) of the reflection optics (1) and configured to prevent electromagnetic rays (300) incident along the optical axis (200) into the reflection optics (1) from propagating parallel to the optical axis (200), - an X-ray lens (11) with a tube (11-1) extending at least between the center stop (12) and the focal plane (100) along the optical axis (200) of the reflection optics (1) and defining a first volume (V1) radially around the optical axis (200), so that electrons (e-) generated by electromagnetic radiation in the first volume (V1) are shielded, wherein the tube (11-2) with the center stop (12) forms an annular aperture (18), - a massive window (13) that limits the first volume (V1) towards the focal plane (100) and is enclosed all around by the tube (11-2), wherein the massive window (13) is designed such that electrons generated by electromagnetic radiation in the first volume (V1) are shielded from the focal plane (100) by the massive window (13).

The utility model belongs to the technical field of ink-jet printers, and discloses a plugging structure for ink-jet covering, which comprises a base, a receiving piece and a plugging assembly, the receiving piece is used for receiving an inserted part, is provided with a locking assembly and provides a locking mechanism for the inserted part, and the plugging assembly comprises a handle, a disc and an annular convex ridge. The handle is connected to the receiving part, the disc is connected to the handle, the annular convex ridge is connected to the disc, and the plugging assembly keeps abutting against the inner side wall of the annular hole under the action of the annular convex ridge, so that the inner side wall of the annular hole and the bottom disc are arranged at intervals. The locking assembly comprises an air bag ring, a connecting pipe and an air bag ball, it can be ensured that a blocking effect is formed between the top end of the annular convex ridge and the inner side wall of the annular hole, the phenomenon that after black glue is sprayed into the receiving part, when the middle inserting and pulling assembly is pulled out subsequently, the black glue is broken is avoided, and therefore the reliability of the device is ensured.

This invention relates to a diffractive surface-emitting semiconductor laser with an annular aperture structure, comprising, from top to bottom, an upper cladding layer, an upper waveguide layer, an active layer, a lower waveguide layer, and a lower cladding layer. When charge carriers are injected into the active layer, the active layer emits light. An annular aperture structure is provided on at least one side of the active layer. The annular aperture structure comprises multiple basic units, which are asymmetrical. Each basic unit is a dual-aperture structure, comprising a first aperture and a second aperture. At least one of the first and second apertures is a triangular aperture, and the areas of the first and second apertures are unequal. This invention improves the vertical emission efficiency of the laser by introducing asymmetry into the basic units of the annular aperture structure, breaking the radial and / or angular upward symmetry, and increasing the emission coefficient.