CN216351726U - Positioning adapter, optical machine and projection equipment - Google Patents

Abstract

The utility model provides a positioning adapter, an optical machine and projection equipment, wherein the positioning adapter comprises an outer frame, a first arc-shaped positioning surface matched with the periphery of a convex surface, an upper positioning surface matched with an upper cutting surface, a lower positioning surface matched with a lower cutting surface and a second arc-shaped positioning surface matched with a side edge surface are arranged on the inner wall of the outer frame, a space is arranged between a frame body opposite to the side cutting surface on the outer frame and the side cutting surface, an elastic part is arranged in the space, and a glass lens is tightly pressed on the second arc-shaped positioning surface by the elastic part; the outside of frame is provided with first location structure. The application provides a location adaptor is used for installing the glass lens in the optical chassis, can reduce development and manufacturing cost, and can be with glass lens accurate positioning in the optical chassis.

Description

Positioning adapter, optical machine and projection equipment

Technical Field

The utility model relates to the field of optical machines, in particular to a positioning adapter, an optical machine and projection equipment.

Background

The glass lens is widely applied to a modulation light path of an optical machine due to the advantages of light resistance, heat resistance, low mold cost and the like. For convenience of positioning, the conventional optical machine usually adopts a full-circle spherical glass lens, and since the glass lens is spherical, the number of the required glass lenses is large in order to meet the requirement of adjusting to a light path, the more optical machines in the prior art use aspheric plastic lenses to reduce the number of the lenses.

SUMMERY OF THE UTILITY MODEL

Based on the above situation, the main objective of the present invention is to provide a positioning adapter, an optical engine, and a projection apparatus, which can save development cost and have reliable structure.

In order to achieve the above object, in a first aspect, the present invention adopts the following technical solutions:

a positioning adapter is used for installing a glass lens in an optical case, wherein the glass lens is a part of a round spherical glass lens, the side surface of the glass lens comprises an upper tangent plane, a lower tangent plane, a side edge plane and a side tangent plane opposite to the side edge plane, the side edge surface is a part of the edge surface of the round spherical glass lens, the positioning adapter comprises an outer frame, the inner wall of the outer frame is provided with a first arc-shaped positioning surface matched with the periphery of the convex surface of the glass lens, an upper positioning surface matched with the upper cutting surface, a lower positioning surface matched with the lower cutting surface and a second arc-shaped positioning surface matched with the side edge surface, the frame body opposite to the side tangent plane on the outer frame and the side tangent plane are provided with a first positioning structure which is used for being matched with the optical machine shell of the optical machine at intervals between the outer frame and the side tangent plane.

Preferably, the outer frame comprises an upper frame body, a lower frame body and a side frame, the side frame comprises a first side frame body connecting one end of the upper frame body and one end of the lower frame body and a second side frame body connecting the other end of the upper frame body and the other end of the lower frame body, and the upper frame body, the lower frame body, the first side frame body and the second side frame body form the loading port of the glass lens;

the upper positioning surface is arranged on the upper frame body;

the lower positioning surface is arranged on the lower frame body;

the second arc-shaped positioning surface is arranged on the first side frame body, and the second side frame body is arranged opposite to the side cutting surface;

and a positioning part is arranged on the rear side of the loading direction of the glass lens, and the first arc-shaped positioning surface is formed on the positioning part.

Preferably, the positioning portion includes a stopper disposed at a junction between the first side frame and the first end of the upper frame and at a junction between the first side frame and the first end of the lower frame, and a side surface of the stopper opposite to the convex surface forms the first arc-shaped positioning surface; the side frame further comprises a third side frame body connected with the second end of the upper frame body and the second end of the lower frame body, the third side frame body is located on the side where the convex surface of the glass lens is located, and the first arc-shaped positioning surface is arranged on the surface, opposite to the convex surface, of the third side frame body.

Preferably, the first arc-shaped positioning surfaces are positioned at the upper end part and the lower end part of the third side frame body, a first avoidance groove is formed between the first arc-shaped positioning surfaces at the upper end part and the lower end part, and the groove bottom of the first avoidance groove is inclined from the middle part in the horizontal direction to the two sides in the horizontal direction to the direction far away from the glass lenses; the second arc locating surface is located the upper and lower tip of first side framework, upper and lower tip form the second between the second arc locating surface and dodge the groove.

Preferably, a first positioning protrusion is convexly arranged on the lower surface of the upper frame body, and the lower surface of the first positioning protrusion forms the upper positioning surface; and/or the presence of a gas in the gas,

the upper surface of the lower frame body is convexly provided with a second positioning bulge, and the upper surface of the second positioning bulge forms the lower positioning surface.

Preferably, a glue dispensing groove is formed in the upper frame body and/or the lower frame body.

Preferably, the first positioning structure is constituted by an outer structure of the first side frame and the second side frame.

In a second aspect, the utility model adopts the following technical scheme:

the utility model provides an optical machine, include the optical chassis with set up in a plurality of glass lenses in the optical chassis, the glass lens has the convex surface, the side of glass lens include last tangent plane, lower tangent plane, side edge face and with the side tangent plane that side edge face is relative, side edge face is the partly of the edge face of circular sphere glass lens still includes as above the location adaptor, be provided with on the optical chassis be used for with first location structure complex second location structure, the glass lens pass through the location adaptor install in the optical chassis.

Preferably, the protrusion is provided with protruding structure on the inside wall of optical chassis, second location structure including set up in constant head tank on the optical chassis inside wall, the constant head tank set up in protruding structural, first location structure including set up in location arch on the lateral surface of frame, location arch with the constant head tank cooperation is realized the location adaptor is in location in the optical chassis, the top surface of protruding structure is less than the bellied top surface setting in location.

In a third aspect, the utility model adopts the following technical scheme:

a projection device comprising the optical engine as described above.

The application provides a location adaptor is used for installing the glass lens in optical chassis, and the glass lens is a part of circular sphere glass lens, and on the one hand, the processing equipment of circular sphere glass lens is general equipment, reduces development cost to two glass lenses can be made to a circular sphere glass lens, thereby practices thrift manufacturing cost, is particularly suitable for the development and the production of small batch bare engine.

Because the glass lens is obtained by cutting a round spherical glass lens, the side cutting surface of the glass lens is an inaccurate surface, in order to realize accurate positioning of the glass lens, the convex surface of the glass lens is used as a main positioning surface, and the accurate positioning of the glass lens is realized by matching the upper cutting surface, the lower cutting surface and the original side edge surface of the glass lens, the lens mounting structure comprises a positioning adapter piece, a first arc-shaped positioning surface matched with the periphery of the convex surface, an upper positioning surface matched with the upper cutting surface, a lower positioning surface matched with the lower cutting surface and a second arc-shaped positioning surface matched with the side edge surface are arranged on the positioning adapter piece, the inaccurate side cutting surface is not used as the positioning surface, but an elastic piece is arranged between the side cutting surface and the positioning adapter piece, the glass lens is pressed on the second arc-shaped positioning surface by the elastic piece, so that the glass lens is accurately positioned in the positioning adapter piece to form an integral structural piece, the positioning adapter is provided with a first positioning structure, and the optical enclosure is provided with a second positioning structure, so that the integral structural member is accurately positioned in the optical enclosure through the matching of the first positioning structure and the second positioning structure.

Other advantages of the present invention will be described in the detailed description, and those skilled in the art will understand the technical features and technical solutions presented in the description.

Drawings

Preferred embodiments of the positioning adaptor according to the present invention will be described below with reference to the accompanying drawings. In the figure:

FIG. 1 is a schematic partial view of an optical machine according to the present invention, with a side cover removed, showing a region where a glass lens is located;

FIG. 2 is a second schematic view of a partial structure of an optical machine according to the present invention, in which a side cover plate is removed and a glass lens is located;

FIG. 3 is a schematic view of a positioning adapter and a glass lens of an optical-mechanical device according to the present invention;

fig. 4 is a second schematic view of a fitting structure of a positioning adapter and a glass lens in an optical-mechanical device according to the present invention;

FIG. 5 is a third schematic view of a fitting structure of a positioning adapter and a glass lens in an optical-mechanical device according to the present invention;

fig. 6 is a schematic structural view of a positioning adapter in an optical-mechanical device according to the present invention;

fig. 7 is a second schematic structural view of a positioning adapter in an optical-mechanical device according to the present invention;

fig. 8 is a third schematic structural view of a positioning adapter in an optical-mechanical device according to the present invention;

FIG. 9 is a schematic view of a configuration of a glass lens in an optical-mechanical device according to the present invention;

FIG. 10 is a second schematic view of a glass lens of a carriage according to the present invention;

FIG. 11 is a schematic diagram of a process for forming a glass lens in an optical-mechanical device according to the present invention;

FIG. 12 is a side elevation view of a glass lens in a light engine according to the present invention;

FIG. 13 is a schematic view of an optical housing of an optical machine according to the present invention in a region where a glass lens is located;

fig. 14 is a second schematic structural diagram of an optical housing of an optical machine according to the present invention in an area where a glass lens is located.

In the figure: .

10. An optical chassis; 11. positioning a groove; 12. a raised structure; 20. a glass lens; 21. a convex surface; 22. a concave surface; 23. cutting into upper sections; 24. cutting into a lower section; 25. a side edge face; 26. cutting a side surface; 30. positioning the adaptor; 31. an outer frame; 311. a first arc-shaped positioning surface; 312. an upper positioning surface; 313. a lower positioning surface; 314. a second arc-shaped positioning surface; 315. an upper frame body; 3151. a first positioning projection; 3152. dispensing a glue groove; 316. a lower frame body; 3161. a second positioning projection; 3162. dispensing a glue groove; 317. a first side frame body; 3171. a second avoidance slot; 318. a second side frame body; 3181. a positioning groove; 319. a third side frame body; 3191. a first avoidance slot; 32. positioning the projection; 33. a stopper; 40. an elastic member; 50. fly-eye lenses.

Detailed Description

The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth in order to avoid obscuring the nature of the present invention, well-known methods, procedures, and components have not been described in detail.

Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".

In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the present application, the terms "upper", "lower", "top", and the like refer to the orientation of the optical engine in the normal use state, and specifically refer to the orientation shown in fig. 4, which is only used for convenience of description and does not constitute any limitation to the structure.

In order to reduce the number of lenses on a modulation light path in an optical machine, in the prior art, an aspheric plastic lens is usually adopted, but since the plastic lens needs to be opened, the mold investment cost is very high, and the probability of reusing a corresponding mold after the plastic lens of a batch of optical machines is produced is very small, the aspheric plastic lens is not suitable for the development and production of small batches of optical machines. In addition, the plastic lens has poor light resistance, so the glass lens is preferably used for optical path modulation in an optical machine with high requirements on light resistance and heat resistance. In order to reduce development and production costs and ensure light resistance and heat resistance, the present application provides an optical engine using glass lens for optical path modulation, as shown in fig. 1 and 2, the optical engine includes an optical housing 10 and a plurality of glass lenses 20 disposed in the optical housing 10, and the glass lenses 20 are used for modulating the optical path downstream of the fly eye lens 50 to form an optical path suitable for the DMD device. The number of the glass lenses 20 can be set according to the light path requirement, for example, three as shown in fig. 1 and 2. The glass lenses 20 are part of the circular spherical glass lenses, the processing equipment of the circular spherical glass lenses is general equipment, and a special die does not need to be arranged like plastic lenses, so that the development cost of the optical machine is reduced. Since the glass lens 20 itself has a positioning structure, which greatly increases the cost, a positioning structure adapted to the glass lens 20 needs to be provided in the optical chassis 10, or a positioning adaptor 30 needs to be provided to position and mount the glass lens 20 in the optical chassis 10. In order to reduce the production cost, two pieces of glass lenses 20 can be formed by dividing a complete round spherical glass lens, so that three round spherical glass lenses can be processed to form two bare glass lenses 20, thereby reducing the production cost of bare machines, and is particularly suitable for development and production of small-scale bare machines, as shown in fig. 9 and 10, the glass lens 20 has a convex surface, for example, one of the light incident surface and the light emergent surface of the glass lens 20 is a convex surface 21, the other of the light incident surface and the light emergent surface is a concave surface 22, for convenience of processing and positioning, the side surface of the glass lens 20 includes an upper tangent surface 23, a lower tangent surface 24, a side edge surface 25 and a side tangent surface 26 opposite to the side edge surface 25, and the upper tangent surface 23 and the lower tangent surface 24 are precise surfaces, it is understood that the upper tangent surface 23 and the lower tangent surface 24 described herein are not limited to being formed by cutting and cutting, in order to ensure accuracy, it is preferable that the upper cut surface 23 and the lower cut surface 24 are formed by grinding, specifically, the lens is clamped in the direction of both ends of one diameter of the circular spherical glass lens, then, as shown in fig. 11, the lens is bilaterally symmetrically ground in the direction of the diameter perpendicular to the aforementioned diameter (refer to the direction indicated by the arrow in fig. 11), after a predetermined grinding amount is reached, the ground lens is cut at an intermediate position (the position of the dotted line in fig. 11) to be divided into two parts, the side edge surface 25 is a part of the edge surface of the circular spherical glass lens, so the side edge surface 25 is also an accurate surface, the side cut surface 26 is a surface formed when the circular spherical glass lens is cut into two parts, since for cutting, the accuracy is low, the cut surface is likely not to pass through the center C, and since accurate positioning and centering are difficult to be performed after the cutting into two parts, since the side cut surface 26 is difficult to grind precisely, the accuracy of the side cut surface 26 is difficult to ensure, that is, the side cut surface 26 is an inaccurate surface, and therefore, the side cut surface 26 of the glass lens 20 cannot be used as a positioning surface in order to ensure the positioning accuracy of the glass lens 20. In addition, since one surface of the glass lens 20 is a concave surface 22, as shown in fig. 12, if positioning is performed by the concave surface 22, only two points (point a and point B in fig. 12) are available, and it is difficult to achieve reliable positioning, and based on this, in the present application, the convex surface 21, the upper tangential surface 23, the lower tangential surface 24, and the side edge surface 25 are selected as positioning surfaces of the glass lens 20, and a specific positioning structure is provided to achieve accurate positioning of the glass lens 20.

If directly set up location structure in light casing 10, receive the restriction of drawing of patterns direction etc. the structural design degree of difficulty of light casing 10 can be improved greatly to location structure's increase, consequently, this application provides a lens mounting structure for install glass lens 20 in light casing 10. The lens mounting structure comprises a positioning adapter piece 30, wherein the glass lens 20 is positioned and mounted on the positioning adapter piece 30, and then the whole structural piece formed by the glass lens 20 and the positioning adapter piece 30 is integrally positioned in the optical machine shell 10, so that the positioning of the glass lens 20 can be ensured, and the processing of an optical machine is facilitated. Specifically, as shown in fig. 6 to 8, the positioning adaptor 30 includes an outer frame 31, and the glass lens 20 is positioned and installed in the outer frame 31 to form an integral structural member, wherein, with reference to fig. 3 to 5, a first arc-shaped positioning surface 311 matched with the periphery of the convex surface 21, an upper positioning surface 312 matched with the upper cutting surface 23, a lower positioning surface 313 matched with the lower cutting surface 24, and a second arc-shaped positioning surface 314 matched with the side edge surface 25 are provided on the inner wall of the outer frame 31, a gap is provided between the frame body opposite to the side cutting surface 26 on the outer frame 31 and the side cutting surface 26, an elastic member 40 is provided in the gap, and the elastic member 40 presses the glass lens 20 against the second arc-shaped positioning surface 314.

In this way, the convex surface 21 of the glass lens 20 is used as a main positioning surface, and the upper tangent surface 23, the lower tangent surface 24 and the original side edge surface 25 of the glass lens 20 are used to realize the precise positioning of the glass lens 20, so that the side tangent surface 26 which may be inaccurate is not used as a positioning surface, but the elastic member 40 is arranged between the side tangent surface 26 and the positioning adaptor 30, and the elastic member 40 is used to press the glass lens 20 to the second arc-shaped positioning surface 314, so that the glass lens 20 is precisely positioned in the positioning adaptor 30. The elastic member 40 can be any structure that can provide elasticity for the glass lens 20 to compress tightly the glass lens 20 on the second arc-shaped positioning surface 314, for example, the elastic member can be a spring, a gasket, and the like, preferably, the elastic member 40 is a silica gel pad, and the silica gel pad and the glass lens 20 can keep a sufficiently large contact area, so that the uniformity of the elasticity of the glass lens 20 in the direction of the second arc-shaped positioning surface 314 is ensured, and the glass lens 20 is prevented from displacing due to uneven stress and further affecting the positioning accuracy.

Further, the outer side of the outer frame 31 is provided with a first positioning structure, the lens mounting structure further comprises a second positioning structure arranged on the inner side wall of the optical chassis 10, and the positioning adapter 30 is accurately positioned in the optical chassis 10 through the cooperation of the first positioning structure and the second positioning structure, so that the glass lens 20 in the positioning adapter 30 is accurately positioned in the optical chassis 10.

The first positioning structure and the second positioning structure may be any structures capable of positioning between the outer frame 31 and the optical housing 10, for example, the first positioning structure is a positioning hole disposed on the side wall of the outer frame 31, the second positioning structure is a positioning column disposed on the inner wall of the optical housing 10, and the positioning between the positioning adapter 30 and the optical housing 10 is realized through the cooperation of the positioning hole and the positioning column. For convenience of assembly and ensuring structural reliability, in a preferred embodiment, as shown in fig. 1 and fig. 2, the first positioning structure includes a positioning protrusion 32 disposed on an outer side surface of the outer frame 31, as shown in fig. 13 and fig. 14, the second positioning structure includes a positioning groove 11 disposed on an inner side wall of the optical chassis 10, and the positioning protrusion 32 cooperates with the positioning groove 11 to realize positioning of the positioning adaptor 30 in the optical chassis 10.

Since the thickness of the optical chassis 10 is limited, if the positioning groove 11 is directly formed on the optical chassis 10, the overall structural strength of the optical chassis 10 may be affected, and therefore, as shown in fig. 13 and 14, preferably, a protrusion structure 12 is convexly formed on the inner side wall of the optical chassis 10, and the positioning groove 11 is disposed on the protrusion structure 12. The adjacent glass lenses 20 may share the protrusion structure 12, that is, a plurality of positioning grooves 11 corresponding to the positioning adapters 30 of different glass lenses 20 are disposed on the protrusion structure 12. After the positioning adapter 30 is installed in the optical chassis 10, the positioning adapter 30 may be pressed by a cover plate on the optical chassis 10 to limit the movement in the vertical direction, and in order to improve the connection reliability between the positioning adapter 30 and the optical chassis 10, it is further preferable that the positioning adapter 301 and the optical chassis 10 are further fixed by adhesive bonding in a dispensing manner. In the embodiment of disposing the positioning groove 11 through the protrusion structure 12, the top surface of the protrusion structure 12 is lower than the top surface of the positioning protrusion 32, so that a glue accommodating space is formed between the top surface of the protrusion structure 12, the positioning protrusion 32 and the inner side wall of the optical chassis 10, and after the positioning protrusion 32 is installed in the positioning groove 11, glue is dispensed in the glue accommodating space, so as to further reliably fix the positioning adaptor 30 in the optical chassis 10.

It will be appreciated that the outer, inner and inner sides of the outer frame 31 described herein are relative to the outer frame itself, with the side adjacent to the inner aperture of the outer frame 31 being the inner side and the side remote from the inner aperture of the outer frame 31 being the outer side. The outer, inner, and inner sides of the light housing 101 are described herein with respect to the light housing 10 itself, with the side near the interior of the light housing 10 being the inner side and the side away from the interior of the light housing 10 being the outer side.

The overall structure of the outer frame 31 includes an upper frame 315, a lower frame 316 and side frames, the upper positioning surface 312 is disposed on the upper frame 315, the lower positioning surface 313 is disposed on the lower frame 316, and the first arc-shaped positioning surface 311 and the second arc-shaped positioning surface 314 are disposed on the side frames. The upper frame body 315, the lower frame body 316 and the side frames may be set to be a whole frame structure, at this time, the side frames include two side frame bodies, one of the side frame bodies is connected to one end of the upper frame body 315 and the lower frame body 316, the other side frame body is connected to the other end of the upper frame body 315 and the lower frame body 316, the two side frame bodies are both provided with first arc-shaped positioning surfaces 311, one of the side frame bodies is provided with a second arc-shaped positioning surface 314, the other side frame body is provided with a structure opposite to the side tangent plane 26, and the elastic member 40 is arranged between the structure and the side tangent plane 26.

Since the thickness of the circular spherical glass lens increases from the outer edge to the center, the thickness of the side cut surface 26 is greater than the thickness of the side edge surface 25, and in order to save raw materials and to facilitate designing the mold release direction of each structure, it is preferable that, as shown in fig. 6 to 8, the side frame includes a first side frame 317 and a second side frame 318, the first side frame 317 connects one ends of the upper frame 315 and the lower frame 316, the second arc-shaped positioning surface 314 is provided on the first side frame 317, the second side frame 318 connects the other ends of the upper frame 315 and the lower frame 316 and is provided opposite to the side cut surface 26, the upper frame 315, the lower frame 316, the first side frame 317, and the second side frame 318 enclose to form the insertion opening of the glass lens 20, the glass lens 20 can be inserted into the insertion opening frame 31, the first arc-shaped positioning surface 311 is provided on the rear side of the insertion direction, specifically, a positioning portion is provided on the rear side of the insertion direction of the glass lens 20, the first arc-shaped positioning surface 311 is formed on the positioning portion, and in order to improve the positioning accuracy, the first arc-shaped positioning surface 311 is disposed on both the side where the first side frame 317 is located and the side where the second side frame 318 is located, and after the glass lens 20 is installed, the convex surface 21 of the glass lens abuts against the first arc-shaped positioning surface 311. The first arc-shaped positioning surface 311 is formed by additionally arranging a structure, so that the structural design is more flexible, and the material saving and the convenient demoulding are facilitated. For example, two positioning bars may be provided at the rear side of the loading direction, one of the positioning bars is located at the side of the first side frame body 317, and the other positioning bar is located at the side of the second side frame body 318, and the first arc-shaped positioning surface 344 is formed on the two positioning bars. To further simplify the structure, it is preferable that, as shown in fig. 6 to 8, the upper frame 315 and the lower frame 316 have shapes approximately matching the shapes of the upper cut surface 23 and the lower cut surface 24 of the glass lens 20, that is, since the dimensions of the upper frame 315 and the lower frame 316 in the direction in which the glass lens 20 is mounted are gradually increased from the first side frame 317 toward the second side frame 318, the size of the glass lens is reduced, on the smaller side, the first arc-shaped positioning surface 311 can be directly formed on the upper frame 315, the lower frame 316 and the first side frame 317, on the larger side, a structure is additionally provided to form the first arc-shaped positioning surface 311, specifically, a stopper 33 is provided at the joint of the first end of the first side frame 317 and the upper frame 315 and at the joint of the first end of the first side frame 317 and the lower frame 316, and the side surface of the stopper 33 opposite to the convex surface 21 forms the first arc-shaped positioning surface 311. The side frame further includes a third side frame 319 connecting the second end of the upper frame 315 and the second end of the lower frame 316, a space is provided between the third side frame 319 and the second side frame 318, the third side frame 319 is located on the side of the convex surface 21 of the glass lens 20, the first arc-shaped positioning surface 311 is disposed on the surface of the third side frame 319 opposite to the convex surface 21, and two ends of the third side frame 319 are respectively connected to the upper frame 315 and the lower frame 316. The device can save raw materials, reduce cost and facilitate the design of the structure to facilitate demoulding.

Wherein, the first arc positioning surface 311 may be configured to extend along the entire third side frame 319 from top to bottom, and in order to improve the positioning accuracy, a protrusion may be disposed on the third side frame 319, and the first arc positioning surface 311 is formed on the protrusion, so as to reduce the contact area between the first arc positioning surface 311 and the glass lens 20. In order to further improve the positioning accuracy, preferably, as shown in fig. 6 to 8, the first arc-shaped positioning surfaces 311 are located at the upper and lower end portions of the third side frame body 319, a first avoiding groove 3191 is formed between the first arc-shaped positioning surfaces 311 at the upper and lower end portions, and the first arc-shaped positioning surfaces 311 at the upper and lower two positions are used to position the glass lens 20, so that on one hand, the positioning accuracy of the glass lens 20 can be ensured, and on the other hand, the two ends of the third side frame body 319 are thicker, so that the overall structural strength of the positioning adaptor 30 is improved.

In a preferred embodiment, the groove bottom of the first avoiding groove 3191 is inclined from the middle of the horizontal direction to both sides of the horizontal direction, i.e. the line cut along the horizontal plane of the groove bottom of the first avoiding groove 3191 is a bending line, so that the inclined groove bottom forms a draft angle on one hand to facilitate drawing, and on the other hand, the two-side drawing makes the third side frame body 319 form a structure with a thick middle and thin two sides along the horizontal direction, thereby improving the structural strength of the third side frame body 319. It is understood that the horizontal middle portion described herein may be a horizontal midpoint or a region near the midpoint.

Second arc locating surface 314 can set up to extend along whole first side framework 317 from top to bottom, and in order to improve positioning accuracy, can be to set up the arch on first side framework 317, second arc locating surface 314 forms on protruding to reduce the area of contact of second arc locating surface 314 and glass lens 20. In order to further improve the positioning accuracy, preferably, as shown in fig. 6 to 8, the second arc-shaped positioning surfaces 314 are located at the upper and lower end portions of the first side frame body 317, the second avoiding groove 3171 is formed between the second arc-shaped positioning surfaces 314 at the upper and lower end portions, and the second arc-shaped positioning surfaces 314 at the upper and lower two positions are used to position the glass lens 20, so that on one hand, the positioning accuracy of the glass lens 20 can be ensured, and on the other hand, the two ends of the first side frame body 317 are thicker, so that the overall structural strength of the positioning adaptor 30 is improved.

The lower surface of the upper frame 315 may be a flat surface, the flat surface constitutes an upper positioning surface 312, and in order to improve the positioning accuracy, it is preferable that, as shown in fig. 7, the lower surface of the upper frame 315 is convexly provided with a first positioning protrusion 3151, and the lower surface of the first positioning protrusion 3151 constitutes the upper positioning surface 312, so that the contact area between the upper positioning surface 312 and the glass lens 20 can be reduced, and one or more first positioning protrusions 3151 may be provided, and in order to further improve the positioning accuracy, it is preferable that, as shown in fig. 7, two first positioning protrusions 3151 are provided at intervals along the opposing direction of the first side frame 317 and the second side frame 318. The first positioning protrusion 3151 may be any shape capable of positioning the glass lens 20, and preferably, the first positioning protrusion 3151 extends along the loading direction of the glass lens 20, and the surface opposite to the glass lens 20 is a plane, so that a certain guiding function can be performed during the loading process of the glass lens 20, and the positioning is accurate and reliable.

Similarly, the upper surface of the lower frame 316 may be a flat surface which constitutes the lower positioning surface 313, and in order to improve the positioning accuracy, it is preferable that, as shown in fig. 8, the upper surface of the lower frame 316 is convexly provided with the second positioning protrusion 3161, and the upper surface of the second positioning protrusion 3161 constitutes the lower positioning surface 313, so that the contact area between the lower positioning surface 313 and the glass lens 20 can be reduced, and one or more second positioning protrusions 3161 may be provided, and in order to further improve the positioning accuracy, it is preferable that, as shown in fig. 8, two second positioning protrusions 3161 are provided at intervals along the opposing direction of the first side frame 317 and the second side frame 318. The second positioning protrusion 3161 may be any shape capable of positioning the glass lens 20, and preferably, the second positioning protrusion 3161 extends along the loading direction of the glass lens 20, and the surface opposite to the glass lens 20 is a plane, so that a certain guiding function can be performed during the loading process of the glass lens 20, and the positioning is accurate and reliable.

In order to further ensure the position reliability of the glass lens 20 and avoid the optical machine from being misplaced due to collision, preferably, as shown in fig. 6 to 8, glue dispensing grooves may be disposed on both the upper frame 315 and the lower frame 316, and after the glass lens 20 is installed in the positioning adaptor 30, glue can be dispensed at the glue dispensing grooves, so as to improve the connection reliability between the glass lens 20 and the positioning adaptor 30. The dispensing groove can be disposed at any position of the upper frame 315 and the lower frame 316, for example, in the embodiment shown in fig. 7, the dispensing groove 3152 on the upper frame 315 is disposed between the two first positioning protrusions 3151, and two side walls of the dispensing groove 3152 are respectively flush with the side surfaces of the first positioning protrusions 3151 at two sides, so that the amount of glue contained in the dispensing groove 3152 can be increased, the contact area between the glue in the dispensing groove 3152 and the upper frame 315 can be increased, and the connection reliability between the upper frame 315 and the glass lens 20 can be ensured. Similarly, as shown in fig. 8, the dispensing groove 3162 on the lower frame 316 is disposed between the two second positioning protrusions 3161, and two side walls of the dispensing groove 3162 are flush with the side surfaces of the second positioning protrusions 3161 on two sides, respectively, so that the glue storage amount in the dispensing groove 3162 can be increased, the contact area between the glue in the dispensing groove 3162 and the lower frame 316 can be increased, and the connection reliability between the lower frame 316 and the glass lens 20 can be ensured.

In order to position the elastic member 40, as shown in fig. 8, a positioning groove 3181 is provided on a surface of the second side frame 318 facing the side cut surface 26, the elastic member 40 is filled in the positioning groove 3181, and the positioning groove 3181 penetrates the loading port in the loading direction in order to facilitate loading of the elastic member 40. During assembly, the elastic element 40 is firstly installed into the positioning groove 3181 along the through installation opening, and then the glass lens 20 is installed, so that the elastic element 40 is pressed against the side edge of the glass lens 20, and the positioning accuracy and reliability of the glass lens 20 are ensured.

The positioning protrusion 32 on the outer side of the outer frame 31 can be arranged at any position of the outer frame 31, which is convenient for positioning, in an embodiment where the outer frame 31 includes the first side frame body 317, the second side frame body 318, and the third side frame body 319, as shown in fig. 8, the positioning protrusion 32 is formed by the outer side structures of the first side frame body 317 and the second side frame body 318, that is, the positioning protrusion 32 for positioning the adaptor 30 is formed by the structures of the first side frame body 317 and the second side frame body 318, so that the structure is simpler and more compact, and the cost is further saved.

Further, the application also provides a projection device which comprises the optical machine, and development and production cost is reduced due to the adoption of the optical machine structure.

It will be appreciated by those skilled in the art that the above-described preferred embodiments may be freely combined, superimposed, without conflict.

It will be understood that the embodiments described above are illustrative only and not restrictive, and that various obvious and equivalent modifications and substitutions for details described herein may be made by those skilled in the art without departing from the basic principles of the utility model.

Claims (10)

1. A positioning adapter piece is used for installing a glass lens (20) in an optical case (10), wherein the glass lens (20) is a part of a circular spherical glass lens, the side surface of the glass lens (20) comprises an upper tangent plane (23), a lower tangent plane (24), a side edge plane (25) and a side tangent plane (26) opposite to the side edge plane (25), the side edge plane (25) is a part of the edge plane of the circular spherical glass lens, and the positioning adapter piece (30) is characterized in that the positioning adapter piece comprises an outer frame (31), a first arc-shaped positioning plane (311) matched with the periphery of a convex surface (21) of the glass lens (20), an upper positioning plane (312) matched with the upper tangent plane (23), a lower positioning plane (313) matched with the lower tangent plane (24) and a second arc-shaped positioning plane (314) matched with the side edge plane (25) are arranged on the inner wall of the outer frame (31), the frame body opposite to the side tangent plane (26) on the outer frame (31) has a gap with the side tangent plane (26), and the outer side of the outer frame (31) is provided with a first positioning structure matched with the light machine shell (10) of the light machine.

2. The positioning adapter according to claim 1, characterized in that the outer frame (31) comprises an upper frame (315), a lower frame (316) and side frames, the side frames comprising a first side frame (317) connecting one end of the upper frame (315) and the lower frame (316) and a second side frame (318) connecting the other end of the upper frame (315) and the lower frame (316), the upper frame (315), the lower frame (316), the first side frame (317) and the second side frame (318) forming the fitting opening of the glass lens (20);

the upper positioning surface (312) is arranged on the upper frame body (315);

the lower positioning surface (313) is arranged on the lower frame body (316);

the second arc-shaped positioning surface (314) is arranged on the first side frame body (317), and the second side frame body (318) is arranged opposite to the side cutting surface (26);

a positioning portion is provided on the rear side of the glass lens (20) in the loading direction, and the first arc-shaped positioning surface (311) is formed on the positioning portion.

3. The positioning adapter according to claim 2, wherein the positioning portion comprises a stopper (33) disposed at a junction of the first side frame (317) and the first end of the upper frame (315) and at a junction of the first side frame (317) and the first end of the lower frame (316), a side surface of the stopper (33) opposite to the convex surface (21) constituting the first arc-shaped positioning surface (311); the side frame further comprises a third side frame body (319) connected with the second end of the upper frame body (315) and the second end of the lower frame body (316), the third side frame body (319) is located on the side where the convex surface (21) of the glass lens (20) is located, and the first arc-shaped positioning surface (311) is arranged on the surface, opposite to the convex surface (21), of the third side frame body (319).

4. The positioning adapter according to claim 3, wherein the first arc-shaped positioning surface (311) is located at the upper end and the lower end of the third side frame body (319), a first avoiding groove (3191) is formed between the first arc-shaped positioning surfaces (311) at the upper end and the lower end, and the groove bottom of the first avoiding groove (3191) is inclined from the middle part in the horizontal direction to the two sides in the horizontal direction in the direction away from the glass lens (20); the second arc-shaped positioning surfaces (314) are located at the upper end and the lower end of the first side frame body (317), and a second avoiding groove (3171) is formed between the second arc-shaped positioning surfaces (314) at the upper end and the lower end.

5. The positioning adapter according to any one of claims 2 to 4, characterized in that a first positioning protrusion (3151) is convexly provided on the lower surface of the upper frame body (315), and the lower surface of the first positioning protrusion (3151) constitutes the upper positioning surface (312); and/or the presence of a gas in the gas,

the upper surface of the lower frame body (316) is convexly provided with a second positioning protrusion (3161), and the upper surface of the second positioning protrusion (3161) forms the lower positioning surface (313).

6. The positioning adapter according to any of claims 2 to 4, characterized in that glue dispensing slots are provided on the upper frame (315) and/or on the lower frame (316).

7. The positioning adapter according to any of claims 2 to 4, characterized in that the outer structures of the first side frame body (317) and the second side frame body (318) constitute the first positioning structure.

8. An optical engine, characterized in that, including an optical chassis (10) and a plurality of glass lenses (20) arranged in the optical chassis (10), the glass lenses (20) have convex surfaces, the side surfaces of the glass lenses (20) include an upper tangent surface (23), a lower tangent surface (24), a side edge surface (25) and a side tangent surface (26) opposite to the side edge surface (25), the side edge surface (25) is a part of the edge surface of the circular spherical glass lenses, further comprising the positioning adapter (30) according to any one of claims 1 to 7, the optical chassis (10) is provided with a second positioning structure for matching with the first positioning structure, and the glass lenses (20) are installed in the optical chassis (10) through the positioning adapter (30).

9. The optical bench according to claim 8, wherein a protrusion structure (12) is convexly disposed on an inner side wall of the optical bench (10), the second positioning structure includes a positioning groove (11) disposed on the inner side wall of the optical bench (10), the positioning groove (11) is disposed on the protrusion structure (12), the first positioning structure includes a positioning protrusion (32) disposed on an outer side surface of the outer frame (31), the positioning protrusion (32) is matched with the positioning groove (11) to realize positioning of the positioning adaptor (30) in the optical bench (10), and a top surface of the protrusion structure (12) is lower than a top surface of the positioning protrusion (32).

10. A projection device comprising the light engine of claim 8 or 9.

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