CN214174811U - Lens cone and lens of ultra-short focus projector and ultra-short focus projector - Google Patents
Lens cone and lens of ultra-short focus projector and ultra-short focus projector Download PDFInfo
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- CN214174811U CN214174811U CN202022528555.7U CN202022528555U CN214174811U CN 214174811 U CN214174811 U CN 214174811U CN 202022528555 U CN202022528555 U CN 202022528555U CN 214174811 U CN214174811 U CN 214174811U
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Abstract
The utility model discloses a projection lens cone of ultrashort burnt projecting apparatus, shot and projecting apparatus of ultrashort burnt projecting apparatus, wherein, this projection lens cone of ultrashort burnt projecting apparatus includes: the lens comprises a front lens cone, a first lens, a second lens and a third lens, wherein a first light inlet is formed in one axial end of the front lens cone, a first light outlet is formed in the other axial end of the front lens cone, and an optical lens is arranged in the front lens cone; the rear lens cone is provided with a second light outlet at one axial end, an installation inclined plane is arranged at the other axial end, a second light inlet penetrates through the peripheral wall between the two axial ends of the rear lens cone, the installation inclined plane is used for installing a reflector, and the second light outlet is connected with the first light inlet so that light entering the rear lens cone from the second light inlet enters the front lens cone after being reflected by the reflector. The utility model discloses a preceding lens cone can produce alone with the back lens cone and make, so can simplify the mould that is used for making the lens cone of ultrashort burnt projecting apparatus, can also guarantee the size precision of the lens cone of ultrashort burnt projecting apparatus simultaneously.
Description
Technical Field
The invention relates to the technical field of projection equipment, in particular to a lens barrel and a lens of an ultra-short-focus projector and the ultra-short-focus projector.
Background
Along with the development of science and technology, people often can use projection equipment when the meeting, especially the ultrashort burnt projecting apparatus of free curved surface, the picture quality that ultrashort burnt projecting apparatus throws out is closely related to its camera lens, the camera lens of current ultrashort burnt projecting apparatus all adopts injection moulding's plastic structure or machine tooling metalwork, because the camera lens of ultrashort burnt projecting apparatus has certain length, this injection mold that will lead to the camera lens of ultrashort burnt projecting apparatus is difficult to do, adopt lathe processing also to guarantee size precision simultaneously.
Disclosure of Invention
The invention mainly aims to provide a lens barrel of an ultra-short-focus projector, aiming at facilitating the production and the manufacture of the lens barrel of the ultra-short-focus projector.
In order to achieve the above object, the present invention provides a projection lens barrel of an ultra-short focus projector, which includes:
the lens comprises a front lens cone, a first lens, a second lens and a third lens, wherein a first light inlet is formed in one axial end of the front lens cone, a first light outlet is formed in the other axial end of the front lens cone, and an optical lens is arranged in the front lens cone;
the rear lens cone is provided with a second light outlet at one axial end, an installation inclined plane is arranged at the other axial end, a second light inlet penetrates through the peripheral wall between the two axial ends of the rear lens cone, the installation inclined plane is used for installing a reflector, and the second light outlet is connected with the first light inlet so that light entering the rear lens cone from the second light inlet enters the front lens cone after being reflected by the reflector.
In an embodiment of the present invention, the end surface of the first light inlet is provided with at least two positioning protrusions; the end face of the second light outlet is concavely provided with a corresponding number of positioning grooves, and the positioning grooves are in inserting fit with the positioning protrusions at corresponding positions.
In an embodiment of the present invention, the end surface of the second light-emitting port is provided with a protruding annular rib extending along the circumferential direction thereof, and the annular rib is located outside the front lens barrel when the second light-emitting port is butted with the first light-emitting port.
In an embodiment of the present invention, the end surface of the first light inlet is provided with a plurality of threaded holes; the second light-emitting port is also provided with an annular plate extending along the circumferential direction of the second light-emitting port, a plurality of through holes are correspondingly formed in the annular plate, and the through holes are connected with threaded holes in corresponding positions through screw connectors.
In an embodiment of the present invention, a mounting window is disposed through a peripheral wall of the front barrel; the projection lens cone of the ultra-short focus projector further comprises a cover plate, and the cover plate is connected with the front lens cone to cover the mounting window in a sealing mode.
In an embodiment of the present invention, the installation slant is an inward concave arc surface.
In an embodiment of the present invention, the peripheral wall of the rear lens barrel is protruded to form a protrusion parallel to the mounting inclined plane, and the second light inlet penetrates through the protrusion.
In an embodiment of the present invention, the front lens barrel is made of aluminum, and the rear lens barrel is made of plastic.
The utility model provides a projecting lens of ultra short burnt projecting apparatus, its projection lens cone that includes optical lens, speculum and ultra short burnt projecting apparatus, wherein, the projection lens cone of ultra short burnt projecting apparatus includes:
the lens comprises a front lens cone, a first lens, a second lens and a third lens, wherein a first light inlet is formed in one axial end of the front lens cone, a first light outlet is formed in the other axial end of the front lens cone, and an optical lens is arranged in the front lens cone;
the rear lens cone is provided with a second light outlet at one axial end, an installation inclined plane is arranged at the other axial end, a second light inlet penetrates through the peripheral wall between the two axial ends of the rear lens cone, the installation inclined plane is used for installing a reflector, and the second light outlet is connected with the first light inlet so that light entering the rear lens cone from the second light inlet enters the front lens cone after being reflected by the reflector.
The utility model also provides an ultra-short burnt projecting apparatus, its projecting lens that includes ultra-short burnt projecting apparatus, ultra-short burnt projecting apparatus's projecting lens includes projection lens subassembly, speculum and ultra-short burnt projecting apparatus's projection lens cone, wherein, ultra-short burnt projecting apparatus's projection lens cone includes:
the lens comprises a front lens cone, a first lens, a second lens and a third lens, wherein a first light inlet is formed in one axial end of the front lens cone, a first light outlet is formed in the other axial end of the front lens cone, and an optical lens is arranged in the front lens cone;
the rear lens cone is provided with a second light outlet at one axial end, an installation inclined plane is arranged at the other axial end, a second light inlet penetrates through the peripheral wall between the two axial ends of the rear lens cone, the installation inclined plane is used for installing a reflector, and the second light outlet is connected with the first light inlet so that light entering the rear lens cone from the second light inlet enters the front lens cone after being reflected by the reflector.
The utility model discloses a projection lens cone of ultrashort burnt projecting apparatus comprises preceding lens cone and back lens cone two parts, preceding lens cone can supply the optical lens installation, the back lens cone can supply the speculum installation, fixed connection between the first second light outlet of going into light inlet and back lens cone of preceding lens cone, so that go into the light that the light inlet entered into in the back lens cone from the second of back lens cone and enter into in the preceding lens cone through second light outlet and first light inlet under the reflection of speculum, the light that enters into in the preceding lens cone jets out from first light outlet again behind the optical lens. Because the utility model discloses a preceding lens cone and back lens cone divide the body to set up, that is to say, the utility model discloses a preceding lens cone can be manufactured with the back lens cone by the independent production, so can simplify the mould that is used for making the lens cone of ultrashort burnt projecting apparatus, can also guarantee the size precision of the lens cone of ultrashort burnt projecting apparatus simultaneously.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a cross-sectional view of an embodiment of a projection lens barrel of an ultra-short focus projector according to the present invention;
fig. 2 is a cross-sectional view of an embodiment of a projection lens of the ultra-short focus projector according to the present invention;
FIG. 3 is a schematic structural diagram of the front barrel in FIG. 1;
fig. 4 is a schematic structural diagram of the rear barrel in fig. 1.
The reference numbers illustrate:
the purpose of the present invention is to provide a novel and improved method and apparatus for operating a computer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should be considered to be absent and not within the protection scope of the present invention.
The utility model provides a projection lens cone of ultrashort burnt projecting apparatus, this projection lens cone of ultrashort burnt projecting apparatus are formed by the concatenation of two parts to be difficult to reach the problem of corresponding size precision in solving current production technology.
Referring to fig. 1 and 2, fig. 1 shows a projection lens barrel of the ultra-short-focus projector of the present invention, and fig. 2 shows a projection lens of the ultra-short-focus projector of the present invention. The projection lens barrel 100 of the ultra-short focus projector includes a front lens barrel 110 and a rear lens barrel 120.
The front barrel 110 is cylindrical, the cross section of the front barrel 110 may be circular, rectangular, polygonal, etc., one axial end of the front barrel 110 is open to form a first light inlet 111, the size of the first light inlet 111 may be smaller than or equal to the inner diameter of the front barrel 110, the other axial end of the front barrel 110 is open to form a first light outlet 112, and the size of the second light inlet 123 may be smaller than or equal to the inner diameter of the front barrel 110.
The front barrel 110 is located between the first light inlet 111 and the first light outlet 112 for installing the optical lens 200, the optical lens 200 may be a convex lens, a beam splitter, a concave lens, etc., and one or more of the optical lenses 200 may be installed at a position between the first light inlet 111 and the first light outlet 112 of the front barrel 110.
The rear barrel 120 is disposed in a cylindrical shape, and the cross section of the rear barrel 120 may be circular, rectangular, polygonal, etc., and preferably, the cross section of the rear barrel 120 is the same as the cross section of the front barrel 110. The rear barrel 120 is provided with a second light outlet 121 at one axial end thereof, and the size of the second light outlet 121 may be smaller than or equal to the inner diameter of the rear barrel 120; the rear barrel 120 is provided at the other end in the axial direction thereof with a mounting inclined surface 122, and the mounting inclined surface 122 may be a flat surface or a curved surface.
The rear barrel 120 is provided with a second light inlet 123 penetrating through the peripheral wall thereof between the two ends in the axial direction, the shape of the second light inlet 123 may be circular, rectangular, polygonal, etc., and the size of the second light inlet 123 is smaller than or equal to the largest cross-sectional area of the rear barrel 120 in the axial direction.
The second light inlet 123 of the rear barrel 120 may allow light reflected by the imaging unit of the ultra-short focus projector to enter the rear barrel 120, the imaging unit of the ultra-short focus projector may be composed of an imaging chip and an imaging lens, and the imaging chip may be a dmd (digital micro device) chip or an lcos (liquid Crystal silicon).
The reflecting mirror 300 can be mounted on the mounting inclined surface 122 of the rear barrel 120, the reflecting mirror 300 can be fixed on the mounting inclined surface 122 by means of bonding, clamping and the like, and the reflecting mirror 300 is used for reflecting the light entering the rear barrel 120 from the second light inlet 123 to the second light outlet 121, that is, the light entering the rear barrel 120 from the second light inlet 123 forms light parallel to the axis of the rear barrel 120 under the reflection action of the reflecting mirror 300.
The second light outlet 121 of the rear barrel 120 is connected to the first light inlet 111 of the front barrel 110, and the second light outlet 121 of the rear barrel 120 and the first light inlet 111 of the front barrel 110 may be connected by bolts, snaps, and other methods. After the rear barrel 120 and the front barrel 110 are connected, the axis of the rear barrel 120 and the axis of the front barrel 110 are overlapped.
The utility model discloses a projection lens cone 100 of ultrashort burnt projecting apparatus comprises front lens cone 110 and back lens cone 120 two parts, front lens cone 110 can supply optical lens 200 to install, back lens cone 120 can supply speculum 300 to install, fixed connection between the first second light outlet 121 of income light inlet 111 of front lens cone 110 and back lens cone 120, so that go into the light that light inlet 123 enters into back lens cone 120 from back lens cone 120 and enter into front lens cone 110 through second light outlet 121 and first light inlet 111 under the reflection of speculum 300, the light that gets into in front lens cone 110 jets out from first light outlet 112 again after optical lens 200. Because the utility model discloses a front lens cone 110 and back lens cone 120 are that the components of a whole that can function independently set up, that is to say, the utility model discloses a front lens cone 110 and back lens cone 120 can be produced alone and make, so can simplify the mould that is used for making the lens cone of ultrashort burnt projecting apparatus, can also guarantee the size precision of the lens cone of ultrashort burnt projecting apparatus simultaneously.
In view of the above, in an embodiment of the present invention, referring to fig. 3 and fig. 4 together, the end surface of the first light inlet 111 is provided with at least two positioning protrusions 113, the end surface of the second light outlet 121 is concavely provided with positioning grooves 124 having the same number as the protrusions, and each positioning groove 124 is inserted into and matched with the positioning protrusions 113 at the corresponding position, so as to achieve the positioning of the front lens barrel 110 and the rear lens barrel 120.
It is worth noting that the number of the positioning protrusions 113 may be two, three, four or even more than four, the positioning protrusions 113 are disposed at the end surface of the first light inlet 111 at intervals, the number of the positioning grooves 124 is the same as that of the positioning protrusions 113, and the arrangement of the positioning grooves 124 is also the same as that of the positioning protrusions 113.
It should be mentioned that, the positioning manner between the front lens barrel 110 and the rear lens barrel 120 is not limited to the positioning protrusion 113 and the positioning groove 124 in the above embodiments, in other embodiments of the present invention, please refer to fig. 3 and fig. 4 together, the end surface of the second light outlet 121 is convexly provided with an annular rib 125 extending along the circumferential direction thereof, the annular rib 125 is sleeved outside the front lens barrel 110 when the second light outlet 121 is abutted to the first light outlet 112, that is, the front lens barrel 110 and the rear lens barrel 120 are in sleeved fit, so that the front lens barrel 110 and the rear lens barrel 120 are positioned.
It should be noted that the two embodiments described above can be combined with each other to position the front barrel 110 and the rear barrel 120, that is, the front barrel 110 and the rear barrel 120 are matched with each other through the positioning protrusion 113 and the positioning groove 124, and the annular rib 125 and the front barrel 110 are in sleeved fit with each other, so that the positioning between the front barrel 110 and the rear barrel 120 is more accurate and stable.
Based on the above two embodiments, after the front lens barrel 110 and the rear lens barrel 120 are relatively positioned, the front lens barrel 110 and the rear lens barrel 120 can be fixedly connected by using a bolt connection, a snap connection, an adhesion, etc. in an embodiment of the present invention, referring to fig. 3 and 4, the front lens barrel 110 and the rear lens barrel 120 are connected by using a bolt, specifically, the end surface of the first light inlet 111 is provided with a plurality of threaded holes 114, the second light outlet 121 is provided with an annular plate 126 extending along the circumferential direction thereof, the annular plate 126 can be protruded at the inner side of the rear lens barrel 120, the annular plate 126 can also be protruded at the outer side of the rear lens barrel 120, preferably, the annular plate 126 is disposed at the inner side of the rear lens barrel 120 to prevent the rear lens barrel 120 from occupying a large installation space due to being protruded at the outer surface of the rear lens barrel 120, the annular plate 126 is attached to the end surface of the first light inlet 111, the annular plate 126 is provided with a plurality of through holes 1261, and the through holes 1261 are connected to the corresponding threaded holes 114 by screws.
It should be noted that, in order to facilitate the optical lens 200 to be installed in the front barrel 110, in an embodiment of the present invention, please refer to fig. 1 to 3, a mounting window 115 is disposed through a peripheral wall of the front barrel 110, the mounting window 115 may be disposed along an axial extension of the front barrel 110 and penetrate through one end or two ends of the front barrel 110 in an axial direction thereof, the mounting window 115 may allow the optical lens 200 to pass through and be installed in the front barrel 110, the projection barrel 100 of the ultra-short focus projector further includes a cover plate 130, and the cover plate 130 is connected to the front barrel 110 to cover the mounting window 115.
It should be noted that, in order to ensure that all the light entering the rear barrel 120 from the second light inlet 123 is reflected into the front barrel 110, in an embodiment of the present invention, please refer to fig. 2 and 4, the installation inclined plane 122 is a concave arc-shaped plane, that is, the installation inclined plane 122 is concave towards the direction away from the second light outlet 121 and is an arc-shaped plane, and the shape of the reflector 300 installed on the installation inclined plane 122 is adapted to the shape of the installation inclined plane 122, that is, is a concave arc-shaped plane.
It should be noted that the curvature of the installation slope 122 can be adjusted according to actual conditions, so that the light entering the rear barrel 120 from the second light inlet 123 is totally reflected into the front barrel 110 by the reflector 300.
Further, referring to fig. 1, the peripheral wall of the rear barrel 120 is protruded to form a protrusion 127 parallel to the mounting inclined surface 122, and the second light inlet 123 is disposed through the protrusion 127. So set up for the light through second income light mouth 123 can all be reflected by speculum 300, has avoided the waste of light source, has still guaranteed the effect of formation of image simultaneously.
Based on the above embodiments, the front barrel 110 is made of aluminum, and the rear barrel 120 is made of plastic. Metal aluminum also has the advantage of being inexpensive, which is advantageous for reducing the manufacturing cost of the lens barrel of the ultra-short focus projector.
The utility model discloses still provide a camera lens 1000 of ultrashort burnt projecting apparatus, please refer to fig. 2, this camera lens 1000 of ultrashort burnt projecting apparatus includes optical lens 200, speculum 300 and ultrashort burnt projecting apparatus's projection lens cone 100, this optical lens 200 is installed in the preceding section of thick bamboo of ultrashort burnt projecting apparatus's projection lens cone 100, this speculum 300 is installed in the back section of thick bamboo of ultrashort burnt projecting apparatus's projection lens cone 100, this ultrashort burnt projecting apparatus's projection lens cone 100's concrete structure refers to above-mentioned embodiment, because this ultrashort burnt projecting apparatus's projection lens 1000 has adopted all technical scheme of above-mentioned all embodiments, consequently have all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, no longer give unnecessary details here.
The utility model also provides an ultrashort burnt projecting apparatus, this ultrashort burnt projecting apparatus includes ultrashort burnt projecting apparatus's projecting lens 1000, this ultrashort burnt projecting apparatus's projecting lens 1000 includes optical lens 200, speculum 300 and ultrashort burnt projecting apparatus's projection lens cone 100, this optical lens 200 is installed in the preceding section of thick bamboo of ultrashort burnt projecting apparatus's projection lens cone 100, this speculum 300 is installed in the back section of thick bamboo of ultrashort burnt projecting apparatus's projection lens cone 100, this ultrashort burnt projecting apparatus's projecting lens 1000's concrete structure refers to above-mentioned embodiment, because this ultrashort burnt projecting apparatus has adopted the whole technical scheme of above-mentioned all embodiments, consequently have all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, give unnecessary details here again.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A projection lens barrel of an ultra-short focus projector, comprising:
the lens comprises a front lens cone, a first lens, a second lens and a third lens, wherein a first light inlet is formed in one axial end of the front lens cone, a first light outlet is formed in the other axial end of the front lens cone, and an optical lens is arranged in the front lens cone;
the rear lens cone is provided with a second light outlet at one axial end, an installation inclined plane is arranged at the other axial end, a second light inlet penetrates through the peripheral wall between the two axial ends of the rear lens cone, the installation inclined plane is used for installing a reflector, and the second light outlet is connected with the first light inlet so that light entering the rear lens cone from the second light inlet enters the front lens cone after being reflected by the reflector.
2. The projection lens barrel of an ultra-short focus projector as claimed in claim 1, wherein the end surface of the first light entrance is provided with at least two positioning protrusions;
the end face of the second light outlet is concavely provided with a corresponding number of positioning grooves, and the positioning grooves are in inserting fit with the positioning protrusions at corresponding positions.
3. The projection lens barrel of an ultra-short focus projector as claimed in claim 1, wherein an annular rib extending along a circumferential direction of the second light exit is protruded from an end surface of the second light exit, and the annular rib is sleeved outside the front lens barrel when the second light exit is abutted to the first light exit.
4. The projection lens barrel of an ultra-short focus projector as claimed in claim 1, wherein the end surface of the first light inlet is provided with a plurality of threaded holes;
the second light-emitting port is also provided with an annular plate extending along the circumferential direction of the second light-emitting port, a plurality of through holes are correspondingly formed in the annular plate, and the through holes are connected with threaded holes in corresponding positions through screw connectors.
5. The projection lens barrel of an ultra-short focus projector as claimed in claim 1, wherein a mounting window is provided through a peripheral wall of the front lens barrel;
the projection lens cone of the ultra-short focus projector further comprises a cover plate, and the cover plate is connected with the front lens cone to cover the mounting window in a sealing mode.
6. The projection lens barrel for an ultra-short focus projector as claimed in claim 1, wherein the mounting slope is provided in a concave arc surface.
7. The projection lens barrel of an ultra-short focus projector according to claim 6, wherein a peripheral wall portion of the rear lens barrel is formed to be convex, a convex portion is formed to be parallel to the mounting inclined surface, and the second light entrance is formed to penetrate the convex portion.
8. The projection lens barrel of an ultra-short focus projector as claimed in any one of claims 1 to 7, wherein the front barrel is made of metal aluminum, and the rear barrel is made of plastic.
9. A projection lens of an ultra-short focus projector, comprising an optical lens, a reflector and the projection lens barrel of the ultra-short focus projector as claimed in any one of claims 1 to 8, wherein the optical lens is installed in a front barrel of the projection lens barrel of the ultra-short focus projector, and the reflector is installed in a rear barrel of the projection lens barrel of the ultra-short focus projector.
10. An ultra-short focus projector comprising the projection lens of the ultra-short focus projector according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022528555.7U CN214174811U (en) | 2020-11-04 | 2020-11-04 | Lens cone and lens of ultra-short focus projector and ultra-short focus projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022528555.7U CN214174811U (en) | 2020-11-04 | 2020-11-04 | Lens cone and lens of ultra-short focus projector and ultra-short focus projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214174811U true CN214174811U (en) | 2021-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022528555.7U Active CN214174811U (en) | 2020-11-04 | 2020-11-04 | Lens cone and lens of ultra-short focus projector and ultra-short focus projector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214174811U (en) |
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2020
- 2020-11-04 CN CN202022528555.7U patent/CN214174811U/en active Active
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