16 results about "Annular aperture" patented technology

A water stop member includes an annular main body that is coaxially brought into contact with an annular wall surface on a circumference portion side of a through-hole of a flange of a base member, an annular outer circumferential lip that is protruded toward the circumference portion, bend-deforms at the attachment completion position, and is brought into close contact with an annular plane of the circumference portion over one circumference, and an annular inner circumferential lip protruded toward the circumference portion in such a manner as to get closer to a hole axis of the through-hole as coaxially getting closer to the circumference portion from an inner circumference portion side than the outer circumferential lip of the main body, bend-deforms at the attachment completion position, and is brought into close contact with the annular plane side of the circumference portion over one circumference.

The invention discloses an optical detection tool, and relates to the technical field of new material optical product detection, the optical detection tool comprises a tool table and a lifting material loading mechanism, the middle part of the top surface of the tool table is provided with an annular hole, and the lifting material loading mechanism is arranged in a first limiting groove. According to the optical detection tool, an electric telescopic rod extends out to enable a center plate, an inner ring plate and an outer ring plate to rise gradually to form a pagoda-shaped structure with the surface of a tool table, so that the center plate, the inner ring plate, the outer ring plate and the tool table form stepped distribution from top to bottom, and at the moment, the center plate bears the circle center part of the bottom of an optical lens; the optical lens is stably lifted to leave the annular limiting groove, and the side of the optical lens is completely exposed at the moment, so that the U-shaped supporting plate can conveniently support and transfer the optical lens, or the clamping mechanism can conveniently clamp and transfer the optical lens, the difficulty that the optical lens is difficult to discharge after being detected is greatly reduced, and meanwhile, the device is widely suitable for different material taking, discharging or transferring mechanisms.

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 relates to the field of equalizing pressure rings, and discloses a firmly positioned equalizing pressure ring, including an equalizing pressure ring body, a plurality of rectangular holes are provided in an annular array on the top of the equalizing pressure ring body, a circular hole is provided on the top of the equalizing pressure ring body, a plurality of abutting protrusions are provided in an annular array on the inner wall of the circular hole, two through holes are symmetrically provided on the outer wall of the equalizing pressure ring body, an annular hole is provided inside the equalizing pressure ring body, and the annular hole passes through a plurality of rectangular holes, and a heat-conducting ring is fixedly embedded in the annular hole. The utility model is simple to use, and a plurality of air holes and rectangular holes are provided on the equalizing pressure ring body to reduce the weight of the equalizing pressure ring body and increase the air permeability, thereby assisting the heat-conducting ring to accelerate the heat dissipation, and the abutting protrusions can abut against the outer wall of the arrester and allow two magnetic suction sheets to be adsorbed on the outer wall, thereby maintaining the position of the equalizing pressure ring body for positioning and fixing.

The present invention relates to a lens barrel and a lens, comprising a main body (11) and an annular aperture (12) arranged at the object side end of the main body (11); the annular aperture (12) freely extends toward the object side and forms a truncated cone-shaped cylinder with one end gradually becoming smaller; a front aperture (13) extending radially is arranged on the inner surface of the annular aperture (12) near the object side end; the length L1 of the annular aperture (12) extending toward the object side satisfies: L1 ≥ 0.2 mm. The lens barrel is provided with an annular aperture at the object side end, so that the size of the lens head using the lens barrel is not limited by the diameter of the lens structure, but is only affected by the effective diameter of the system and the wall thickness of the straight-wall aperture, thereby realizing the ultimate design of the head size. Moreover, after the integrated lens barrel process is achieved, the feasibility and mass production of the lens molding and lens assembly processes of the special optical system design are realized.

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.

The invention discloses a refrigeration type monolithic annular aperture folded imaging optical system, relates to the technical field of refrigeration type infrared lenses, and aims to solve the problems that an existing infrared system is small in view field and large in size. The system is sequentially and coaxially provided with an annular aperture lens, a window, a cold diaphragm and an imaging plane; the window is located behind the annular aperture lens, and an incident light beam passes through the annular aperture lens, then passes through the window and the cold diaphragm and finally is focused on an imaging plane; the annular aperture lens sequentially comprises a first annular transmission surface, a first annular reflection surface, a second annular reflection surface, a third annular reflection surface, a fourth annular reflection surface and a second annular transmission surface from outside to inside. The optical system only adopts one annular aperture lens. Compared with a traditional optical system, the optical path can be folded through the special structure of the annular aperture system, the problem that the size of the traditional optical system is large is solved while the imaging quality is guaranteed, miniaturization of the system can be achieved, and the system is fewer in component and easy to install and adjust.

The invention provides an MEMS atomic gas chamber integrated with a heat shielding layer and a preparation method of the MEMS atomic gas chamber, and belongs to the technical field of micro electro mechanical systems and precise timing. The invention provides an MEMS atomic gas chamber integrated with a heat shielding layer. The MEMS atomic gas chamber comprises a first glass substrate, a silicon substrate and a second glass substrate which are stacked from top to bottom, the silicon substrate is provided with a through hole penetrating through the upper surface and the lower surface and an annular hole / annular groove concentric with the through hole. A heat insulation material is arranged in the annular hole / annular groove; the two ends of the through hole are sealed through the first glass substrate and the second glass substrate to form a sealed cavity; and the sealed cavity is filled with alkali metal steam. The two ends of the through hole are sealed through the first glass substrate and the second glass substrate, and a formed sealed cavity is a metal air chamber; the silicon substrate is also provided with an annular hole / annular groove which is concentric with the through hole, and the annular hole / annular groove is internally provided with a heat insulation material, so that the heat insulation effect is improved.

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.