CN218974762U

CN218974762U - Imaging lens and projection structure

Info

Publication number: CN218974762U
Application number: CN202223430546.XU
Authority: CN
Inventors: 周良; 姜君城; 宋高洁
Original assignee: Shenzhen Baikang Optical Co ltd
Current assignee: Shenzhen Baikang Optical Co ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-05-05
Anticipated expiration: 2032-12-19

Abstract

The application provides an imaging lens for image light that the lamp source sent, imaging lens include body portion and outer portion, and body portion is the solid of revolution form, and outer portion integrated into one piece is on the axial one end terminal surface of body portion, and the surface of outer portion is the arc surface of evagination, and the top center of body portion is first central line with the connection of the highest point of outer portion, and body portion has the second central line, and first central line slope setting relative to the second central line. The imaging lens in this application, it mainly realizes imaging through outer protruding portion, and sets up outer protruding portion relative body portion slope to make when the lamp source sets up with the desktop slope relatively, can compensate the slope of lamp source through the slope of outer protruding portion, and then guarantee that the facula of projection on to the screen can not warp.

Description

Imaging lens and projection structure

Technical Field

The application belongs to the technical field of projection, and more particularly relates to an imaging lens and a projection structure.

Background

With the development of product technology and the deep market, projection lamp products are mature and are popularized in many fields such as life, education, business, entertainment and the like.

The projection lamp is characterized in that the projection imaging and the enlargement of a lamp source are realized by a multi-purpose lens combination of the projection lamp, the lens combination comprises a big lens and a small lens, the lamp source forms an image through the small lens, and then the lamp source is enlarged and projected on a screen through the big lens. Most of the use scenes of the existing projection lamp are that the lamp sources are obliquely arranged on the platform, so that light spots projected to a screen by the projection lamp are deformed; in addition, in order to improve the functionality of the product, the projection lamp can be provided with a plurality of light sources and small lenses corresponding to the light sources, so that the small lenses and the large lenses are not coaxial, the spot forming can be influenced, and the spot is deformed.

Disclosure of Invention

An object of the embodiment of the application is to provide an imaging lens and projection structure to solve the technical problem that leads to the facula to warp when the projection lamp slope that exists among the prior art.

In order to achieve the above purpose, the technical scheme adopted in the application is as follows: the utility model provides an imaging lens for image the light that the lamp source sent, become on the axial one end terminal surface of body portion, the surface of outer protruding portion is the circular arc face of evagination, the top center of body portion with the connection of the highest point of outer protruding portion is first central line, body portion has the second central line, first central line is relative the slope of second central line sets up.

Optionally, the outer protruding portion is a portion of a solid of revolution structure with the first center line as a rotation axis presented at an end face of the body portion.

The beneficial effect of this application provided imaging lens lies in: compared with the prior art, the imaging lens of this application includes body portion and outer convex part, and outer convex part is the arc, and imaging lens is imaged light through outer convex part mainly for when the second central line slope of the first central line relative body portion of outer convex part sets up for this slope can compensate the slope of lamp source, and then makes when the lamp source slope sets up, the facula of projection to the screen can not warp.

On the other hand, the application also provides a projection structure which comprises a lamp source, a magnifying lens and the imaging lens; the light source is arranged on one side of the body part, which is away from the outer convex part, and the magnifying lens is arranged on one side of the outer convex part, which is away from the body part; the light emitted by the light source is imaged through the imaging lens, amplified through the amplifying lens and projected onto a screen.

Optionally, the projection structure includes a plurality of light sources and a plurality of imaging lenses, each of the imaging lenses is disposed on a light emitting side of each of the light sources in a one-to-one correspondence manner, and the amplifying lens is configured to amplify light spots formed by each of the imaging lenses respectively.

Optionally, the magnifying lens has a first central axis, each imaging lens is arranged around the first central axis, and the second central axis is parallel to the first central axis; the first central line and the second central line are positioned in a first plane, the light source is provided with a third central line, the third central line and the second central line are positioned in a second plane, and the first plane and the second plane form a preset angle.

Optionally, the value of the preset angle corresponding to each imaging lens is different.

Optionally, the imaging lens further includes a fool-proof portion formed at an outer periphery of the body portion; the projection structure further comprises a plurality of installation barrels for installing the imaging lenses, clamping grooves are formed in the installation barrels, and the fool-proof parts are clamped in the clamping grooves.

Optionally, the projection structure further comprises a lamp panel, the lamp source is mounted on the lamp panel, the mounting barrel is mounted on the lamp panel, the imaging lens is clamped in the mounting barrel, and the mounting barrel is further provided with a limiting structure for limiting the imaging lens axially so as to ensure the relative distance between the imaging lens and the lamp source.

Optionally, the projection structure includes one the light source and one the imaging lens, the magnifying lens and the imaging lens are coaxially disposed, the light source has a third center line, and the first center line, the second center line and the third center line are located in the same plane.

Optionally, the projection structure further includes a lens barrel, the lens barrel is cone-shaped, a small end of the lens barrel is covered outside each imaging lens, and the magnifying lens is mounted on a large end of the lens barrel.

The beneficial effect of projection architecture that this application provided lies in: compared with the prior art, the projection structure of the projection lens has the advantages that through the arrangement of the imaging lens, when the lamp source is obliquely arranged, light spots projected onto the screen cannot be deformed, and the projection attractive effect is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of an imaging lens according to an embodiment of the present disclosure;

FIG. 2 is a schematic top view of an imaging lens according to an embodiment of the present disclosure;

FIG. 3 is a schematic side view of an imaging lens according to an embodiment of the present application;

fig. 4 is a schematic perspective view of a projection structure according to an embodiment of the present disclosure;

FIG. 5 is a schematic cross-sectional view of the projection arrangement of FIG. 4;

FIG. 6 is a diagram showing the positional relationship of the first, second and third centerlines in the present application;

fig. 7 is a schematic view of the mounting cylinder of fig. 5.

Wherein, each reference sign in the figure:

1. an imaging lens; 11. a body portion; 12. an outer protruding portion; 13. a fool-proof part; 2. a magnifying lens; 3. a lens barrel; 4. a mounting cylinder; 41. a limit structure; 42. a clamping block; 5. a lamp panel; 6. a light source; o1, a first center line; o2, a second center line; o3, a first central axis; and O4, a third central line.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Referring to fig. 1 to 3, an imaging lens 1 according to an embodiment of the present application will be described. The imaging lens 1 is used for imaging light emitted by the light source 6, for example, imaging light emitted by the light source 6 to form a light spot of sunrise, lunar half-food or lunar full-food.

Specifically, the imaging lens 1 includes a body portion 11 and an outer flange portion 12, and the body portion 11 is integrally connected with the outer flange portion 12, that is, the entire imaging lens 1 is integrally formed by a transparent material. The body 11 is in a revolving body shape, the outer flange 12 is integrally formed on an axial end face of the body 11, the surface of the outer flange 12 is an outwards convex arc surface, the connection between the top center of the body 11 and the highest point of the outer flange 12 is a first central line O1, the body 11 is provided with a second central line O2, and the first central line O1 is obliquely arranged relative to the second central line O2.

According to the imaging principle, if the light source 6 has a third center line, the third center line of the light source 6 is generally arranged coaxially with the second center line O2 of the imaging lens 1, and when the light emitted by the light source 6 is located on a circle, the imaging lens 1 images a circular light spot on the screen. In practical use, the projection lamp is usually disposed obliquely on the desktop, because the projection lamp is generally disposed on the horizontal desktop, and the screen is generally disposed at a higher position, the light emitted by the lamp 6 needs to be finally imaged onto the screen, the lamp 6 needs to be disposed obliquely toward the screen, and the inclination of the lamp 6 can deform the light spot projected to the screen by the projection lamp. Therefore, when the light source 6 is placed obliquely, in order to prevent the spot on the screen from being deformed, the portion for imaging in the imaging lens 1 needs to be set obliquely as a whole. The imaging lens 1 in this embodiment mainly images light through the outer flange 12, so the inventor thinks that the first center line O1 of the outer flange 12 is inclined with respect to the second center line O2 of the body 11, so that the inclination can compensate for the inclination of the light source 6, and further ensures that the projection onto the screen is circular.

Alternatively, referring to fig. 1 to 3, the body 11 may have a truncated cone shape, and the outer flange 12 is formed on an end surface of the body 11 having a smaller outer diameter. It should be understood that, in other embodiments of the present application, the body 11 may also have a cylindrical shape or other revolving structure, which is not limited herein.

In one embodiment, referring to fig. 3, the outer flange 12 is a portion of a solid structure having a first center line O1 as a rotation axis, which is present at an end surface of the body 11. In the case of designing the outer flange 12, it is necessary to incline the entire outer flange 12 with respect to the second center line O2, and therefore, in the case of designing, the second center line O2 is inclined by an angle to reach the position of the first center line O1, and then the plane on the outer flange 12 on the side of the first center line O1 is rotated about the first center line O1 as the rotation axis, and since the first center line O1 is inclined, the inclined revolved body portion is located in the body portion 11, and the outer flange 12 is the portion of the revolved body located on the end face of the body portion 11, and the light emitted from the light source 6 is imaged by this portion, so that an undeformed spot can be realized. In addition, by the above arrangement, the whole of the outer flange 12 can be in a revolving structure, and the patterns formed by the outer flange 12 are all located on the same circle, that is, circular light spots are formed.

On the other hand, referring to fig. 4 and 5, the present application further provides a projection structure, which includes a light source 6, a magnifying lens 2 and the imaging lens 1; the light source 6 is arranged on one side of the body part 11, which is away from the outer part 12, the magnifying lens 2 is arranged on one side of the outer part 12, which is away from the body part 11, and the light emitted by the light source 6 is imaged through the imaging lens 1 and projected onto a screen after being magnified through the magnifying lens 2. Wherein, the light source 6 has a first inclination angle relative to the vertical direction, the second center line O2 of the body portion 11 is parallel to the vertical direction, the first center line O1 has a second inclination angle relative to the second center line O2, the second inclination angle may be the same as the first inclination angle, the second inclination angle may also be different from the first inclination angle, the second inclination angle needs to be obtained through multiple experiments according to the conditions of the first inclination angle of the light source 6, the relative distance between the light source 6 and the imaging lens 1, the imaging effect of the outer flange portion 12, and the like, so long as the condition that the light spot on the screen is not deformed can be satisfied.

In one embodiment, the projection structure includes a plurality of light sources 6 and a plurality of imaging lenses 1, each imaging lens 1 is disposed on the light emitting side of each light source 6 in a one-to-one correspondence manner, and the magnifying lens 2 is used for magnifying the light spots formed by each imaging lens 1. In this embodiment, through the arrangement of the plurality of light sources 6 and the plurality of imaging lenses 1, different projections can be presented at the same time according to the needs, or different projections are formed by the combination of different light sources 6 and the imaging lenses 1 in different time periods, so that the functions of the projection structure are more complete, and the application range is wider.

Optionally, the projection structure includes three light sources 6 and three imaging lenses 1, and the projection of sunrise, lunar half food and lunar full food is realized to the cooperation of three light sources 6 and three imaging lenses 1 one by one. It will be appreciated that, in other embodiments of the present application, the number of the light sources 6 and the imaging lenses 1 may be one, two, four or more, and the projection may be lunar, according to actual design requirements, which is not limited herein.

In one embodiment, referring to fig. 5 and 6, the magnifying lens 2 has a first central axis O3, each imaging lens 1 is disposed around the first central axis O3, and the second central axis O2 is disposed parallel to the first central axis O3; the first central line O1 and the second central line O2 are located in a first plane, the light source 6 has a third central line O4, the third central line 04 and the second central line O2 are located in a second plane, and a preset angle is formed between the first plane and the second plane.

In this embodiment, due to the arrangement of the plurality of imaging lenses 1, each imaging lens 1 cannot be arranged coaxially with the magnifying lens 2, resulting in deformation of the projection projected out via the magnifying lens 2. In this regard, the present application improves the position of the imaging lens 1, specifically, after the outer flange 12 is obliquely disposed, the whole imaging lens 1 is rotated by a preset angle with the second center line O2 as a selection axis, so as to compensate for projection deformation caused by the fact that the imaging lens 1 and the magnifying lens 2 are not coaxial.

Specifically, before the imaging lens 1 rotates, the first center line O1, the second center line O2, and the third center line O4 are located on the same plane; after the imaging lens 1 rotates, the first center line O1 and the second center line O2 are located in a first plane, the third center line O4 and the second center line O2 are located in a second plane, and the first plane rotates by a preset angle relative to the second plane.

The magnitude of the preset angle is not limited, and may be 0 °, 30 °, 60 °, 120 °, 150 °, 180 °, 240 °, 270 °, 330 °, 360 ° and the like, and specific values of the preset angle may be obtained according to multiple tests, so long as projection non-deformation can be satisfied.

In one embodiment, the values of the preset angles corresponding to the imaging lenses 1 are different. In the present embodiment, since the number of the imaging lenses 1 is three, the images to be formed by the three imaging lenses 1 are different, and the relative positions of the three imaging lenses 1 and the screen are also different, the preset angles by which the three imaging lenses 1 need to rotate are also different. It will be appreciated that in other embodiments of the present application, when the images to be formed by the three imaging lenses 1 are the same, the preset angles by which the three imaging lenses 1 need to rotate may be the same.

In one embodiment, referring to fig. 5 and 7, the imaging lens 1 further includes a fool-proof portion 13, where the fool-proof portion 13 is formed on the outer periphery of the body portion 11; the projection structure further includes a plurality of mounting cylinders 4 for mounting the imaging lenses 1, each imaging lens 1 is mounted in one of the mounting cylinders 4, a clamping groove (not shown) is provided in the mounting cylinder 4, and the fool-proof portion 13 is clamped in the clamping groove. In this embodiment, since the imaging lens 1 needs to rotate by a preset angle, in order to ensure that the imaging lens 1 can be installed at a position after rotating by the preset angle when installed, the embodiment sets the foolproof portion 13 on the imaging lens 1 and sets the clamping groove on the installation cylinder 4, and the position of the clamping groove is set according to the position after the imaging lens 1 has rotated by the preset angle, so that when the imaging lens 1 is installed, the imaging lens 1 after being installed can be ensured to be in a state after rotating by the preset angle only by correspondingly clamping the clamping groove and the foolproof portion 13. In addition, in designing, the clamping grooves of the mounting cylinders 4 are arranged at different positions so as to ensure that each imaging lens 1 is mounted at the corresponding correct position.

In an embodiment, referring to fig. 4 and 5, the projection structure further includes a lamp panel 5, a lamp source 6 is mounted on the lamp panel 5, a mounting barrel 4 is mounted on the lamp panel 5, the imaging lens 1 is clamped in the mounting barrel 4, a limiting structure 41 is further disposed in the mounting barrel 4, and the limiting structure 41 is used for limiting the imaging lens 1 axially so as to ensure the relative distance between the imaging lens 1 and the lamp source 6. Since the relative distance between the light source 6 and the imaging lens 1 is the key for imaging, the relative distance between the light source 6 and the imaging lens 1 can be stabilized by the limiting structure 41 in this embodiment, and thus imaging is stabilized.

Specifically, referring to fig. 7, the limiting structure 41 is a limiting step formed on the inner wall of the mounting cylinder 4, and a peripheral edge of the imaging lens 1 abuts against the limiting step.

Referring to fig. 7, two symmetrically arranged clamping blocks 42 are further formed on the inner wall of the mounting cylinder 4, and the two clamping blocks 42 are used for respectively clamping the imaging lens 1 at different positions along the circumferential direction, so that the imaging lens 1 is stably mounted in the mounting cylinder 4.

In another embodiment of the present application, the projection structure includes a light source 6 and an imaging lens 1, the magnifying lens 2 is disposed coaxially with the imaging lens 1, the light source 6 has a third center line O4, and the first center line O1, the second center line O2 and the third center line O4 are located in the same plane. In this embodiment, since the imaging lens 1 is disposed coaxially with the magnifying lens 2, the imaging lens 1 may not be rotated.

In one embodiment, referring to fig. 4 and 5, the projection structure further includes a lens barrel 3, the lens barrel 3 has a conical shape, a small end of the lens barrel 3 is covered outside each imaging lens 1, and the magnifying lens 2 is mounted on a large end of the lens barrel 3. In the present embodiment, by providing the lens barrel 3, on the one hand, it is possible to perform a condensing function, and on the other hand, it is also possible to mount the magnifying lens 2, thereby realizing a positional connection relationship between each imaging lens 1 and the magnifying lens 2.

The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application.

Claims

1. The utility model provides an imaging lens for image the light that the lamp source sent, its characterized in that, imaging lens includes body portion and outer portion, body portion is the solid of revolution form, outer portion integrated into one piece in on the axial one end terminal surface of body portion, the surface of outer portion is the circular arc face of evagination, the top center of body portion with the connection of the highest point of outer portion is first central line, body portion has the second central line, first central line is relative the slope of second central line sets up.

2. The imaging lens as claimed in claim 1, wherein the outer flange portion is a portion of a solid of revolution having the first center line as a rotation axis presented at an end face of the body portion.

3. A projection structure comprising a light source, a magnifying lens and an imaging lens according to claim 1 or 2; the light source is arranged on one side of the body part, which is away from the outer convex part, and the magnifying lens is arranged on one side of the outer convex part, which is away from the body part; the light emitted by the light source is imaged through the imaging lens, amplified through the amplifying lens and projected onto a screen.

4. The projection structure of claim 3, wherein the projection structure comprises a plurality of light sources and a plurality of imaging lenses, each of the imaging lenses is disposed on a light emitting side of each of the light sources in a one-to-one correspondence manner, and the magnifying lens is used for magnifying light spots formed by each of the imaging lenses.

5. The projection structure of claim 4, wherein the magnifying lens has a first central axis, each of the imaging lenses is disposed around the first central axis, and the second central axis is disposed in parallel with the first central axis; the first central line and the second central line are positioned in a first plane, the light source is provided with a third central line, the third central line and the second central line are positioned in a second plane, and the first plane and the second plane form a preset angle.

6. The projection architecture of claim 5 wherein the predetermined angle values for each of the imaging lenses are different.

7. The projection structure of claim 5, wherein the imaging lens further comprises a fool-proof portion formed at an outer periphery of the body portion; the projection structure further comprises a plurality of installation barrels for installing the imaging lenses, clamping grooves are formed in the installation barrels, and the fool-proof parts are clamped in the clamping grooves.

8. The projection architecture of claim 7 further comprising a lamp panel, wherein the lamp source is mounted on the lamp panel, the mounting barrel is mounted on the lamp panel, the imaging lens is disposed in the mounting barrel in a clamped manner, and a limiting structure is further disposed in the mounting barrel for limiting the imaging lens axially to ensure a relative distance between the imaging lens and the lamp source.

9. The projection system of claim 3, wherein the projection system comprises one of the light sources and one of the imaging lenses, the magnifying lens being coaxially disposed with the imaging lens, the light source having a third centerline, the first, second and third centerlines being in the same plane.

10. The projection architecture of claim 3 further comprising a barrel, said barrel having a conical shape, a small end of said barrel being covered outside each of said imaging lenses, said magnifying lens being mounted on a large end of said barrel.