CN116520627A - Projection lamp optical system and vehicle - Google Patents
Projection lamp optical system and vehicle Download PDFInfo
- Publication number
- CN116520627A CN116520627A CN202310458882.5A CN202310458882A CN116520627A CN 116520627 A CN116520627 A CN 116520627A CN 202310458882 A CN202310458882 A CN 202310458882A CN 116520627 A CN116520627 A CN 116520627A
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- Prior art keywords
- imaging lens
- lens group
- imaging
- projection lamp
- optical system
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- 230000003287 optical effect Effects 0.000 title claims abstract description 52
- 238000003384 imaging method Methods 0.000 claims abstract description 96
- 238000005286 illumination Methods 0.000 claims abstract description 45
- 239000011521 glass Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/16—Optical objectives specially designed for the purposes specified below for use in conjunction with image converters or intensifiers, or for use with projectors, e.g. objectives for projection TV
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention provides a projection lamp optical system and a vehicle, which relate to the technical field of lighting equipment and comprise a light source, an illumination lens group, a pixel and an imaging lens group, wherein the illumination lens group comprises at least one illumination lens, and the imaging lens group comprises at least two imaging lenses; the light source, the illumination lens group, the pixels and the imaging lens group are sequentially arranged on the optical axis, and the extension line of the pixels, the main surface of the lens of the imaging lens group and the extension line of the image plane intersect at one point. Through design of the placement position and angle of the pixels, the pixels form a certain angle with the optical axis, the object plane, the image plane and the extension plane of the main surface of the lens intersect in a straight line, the law of the Moer is satisfied, the problem of inconsistent imaging definition of the full view field of the oblique-projection vehicle-mounted lens is solved, the effect of clear imaging of the full view field is achieved, and the imaging effect of the oblique-projection vehicle-mounted projection lamp is improved.
Description
Technical Field
The invention relates to the technical field of lighting equipment, in particular to a projection lamp optical system and a vehicle.
Background
Along with the intelligent degree of car is higher and higher, in order to satisfy customer's different demands, on-vehicle projection lens also more and more carries on the car, realizes the projection effect of different functions, if: welcome light blanket, logo projection, signal indication, safety reminding and the like.
As shown in fig. 1, the prior art generally adopts a film form, and the film is placed between the illumination lens and the imaging lens and is placed perpendicular to the optical axis. The film is perpendicular to the optical axis, and the same focal plane is also perpendicular to the optical axis, so that a projected image cannot be formed on the focal plane due to oblique projection, and imaging is unclear.
In the technical scheme of the projection lamp in the prior art, full-view-field clear projection can be achieved by orthographic projection, but for oblique projection, due to a certain projection angle, the imaging distance is inconsistent, a projected image cannot be formed on a focal plane, so that the defects of short-distance clear and long-distance fuzzy exist, and the requirement of clear imaging of the full view field cannot be met.
Disclosure of Invention
In view of the drawbacks of the prior art, an object of the present invention is to provide an optical system for a projection lamp and a vehicle.
The invention provides a projection lamp optical system, which comprises a light source, an illumination lens group, a pixel and an imaging lens group, wherein the illumination lens group comprises at least one illumination lens, and the imaging lens group comprises at least two imaging lenses; the light source, the illumination lens group, the pixels and the imaging lens group are sequentially arranged on the optical axis, and the extension line of the pixels, the main surface of the lens of the imaging lens group and the extension line of the image plane intersect at one point.
Preferably, the included angle beta between the pixel and the optical axis meets the following conditions:
wherein O is the object point of the pixel on the optical axis, O ' is the corresponding image point, alpha is the included angle between the image plane and the optical axis, L is the object distance of the point O on the optical axis, and L ' is the image distance of the image point O ' on the optical axis.
Preferably, the included angle beta between the pixel and the optical axis meets the following conditions: beta is less than 90 DEG and 10 DEG.
Preferably, the image element comprises a film or a light emitting image element printed with a projection pattern.
Preferably, the illumination lens group includes a first illumination lens and a second illumination lens; the imaging lens group comprises a first imaging lens, a second imaging lens and a third imaging lens; the first illumination lens, the second illumination lens, the first imaging lens, the second imaging lens, and the third imaging lens each comprise any one or more of a spherical surface, an aspherical surface, and a free-form surface.
Preferably, the materials of the first illumination lens, the second illumination lens, the first imaging lens, the second imaging lens and the third imaging lens comprise any one or more of glass and plastic.
Preferably, the lens main surface position of the imaging lens group is located inside the imaging lens group or outside the imaging lens group.
Preferably, the imaging lens further comprises a diaphragm, wherein the diaphragm is arranged between the pixel and the imaging lens group; or the diaphragm is arranged at one side of the imaging lens group, which is far away from the pixel along the optical axis direction; or the diaphragm is disposed inside the imaging lens group.
Preferably, a circuit board is further included, and the circuit board is electrically connected with the light source.
According to the vehicle provided by the invention, the projector lamp light system is arranged on the vehicle body.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the arrangement positions and angles of the pixels are designed, so that the pixels form a certain angle with the optical axis, the object plane, the image plane and the extension surfaces of the main surfaces of the lens are intersected in a straight line, the law of the Moire is satisfied, the problem of inconsistent full-view imaging definition of the oblique-projection vehicle-mounted lens is solved, the full-view clear imaging effect is achieved, and the imaging effect of the oblique-projection vehicle-mounted projection lamp is improved.
2. According to the invention, through adjusting the angle of the pixel, the adoption of an MLA micro-lens array projection mode can be avoided, the processing difficulty is reduced, and the processing cost is reduced.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of a conventional projection lamp according to the background art;
FIG. 2 is a schematic view of an overall structure of an optical system of a projection lamp according to a main embodiment of the present invention;
fig. 3 is a schematic diagram of an imaging principle of an oblique projection lamp for vehicle in an embodiment of the present invention.
The figure shows:
first imaging lens 51 of circuit board 1
Light source 2 second imaging lens 52
Illumination lens group 3 third imaging lens 53
First illumination lens 31 diaphragm 6
The second illumination lens 32 has an optical axis 7
Image element 4 projection image 8
Object plane 40 image plane 80
Imaging lens group 5 focal plane 9
Lens main surface 50
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
As shown in fig. 2 and 3, an optical system for a projection lamp according to the present invention includes a circuit board 1, a light source 2, an illumination lens group 3, a pixel 4, an imaging lens group 5, and a diaphragm 6, wherein the illumination lens group 3 includes at least one illumination lens, and the imaging lens group 5 includes at least two imaging lenses. The circuit board 1, the light source 2, the illumination lens group 3, the pixel 4, the imaging lens group 5 and the lens are sequentially arranged on the optical axis 7, the optical axis 7 is the central line of the light beam emitted by the light source 2, the plane where the pixel 4 is located is the object plane 40, and the extension line of the pixel 4, the lens main surface 50 of the imaging lens group 5 and the extension line of the image plane 80 intersect at a point which is A. The plane in which the projection image 8 is located is the image plane 80. The circuit board 1 is electrically connected with the light source 2, the light source 2 is driven to light by the circuit board 1, the light emitted by the light source 2 uniformly illuminates the pixel 4 through the illumination lens group 3, the pixel 4 is projected and imaged to the image plane 80 through the imaging lens group 5, the image plane 80 can be the ground, and the size of the image plane 80 is limited through the diaphragm 6, so that clear projection of the full field of view is realized.
Specifically, the angle β between the pixel 4 and the optical axis 7 satisfies:
where O is the object point of the pixel 4 on the optical axis 7, O ' is the corresponding image point, α is the angle between the image plane 80 and the optical axis 7, L is the object distance of the point O on the optical axis 7, and L ' is the image distance of the image point O ' on the optical axis 7. The angle beta between the pixel 4 and the optical axis 7 satisfies: beta is less than 90 DEG and 10 DEG.
More specifically, this embodiment proposes a specific implementation manner as follows:
the illumination lens group 3 comprises a first illumination lens 31 and a second illumination lens 32, and light emitted by the light source 2 is collected and converged by the cooperation of the first illumination lens 31 and the second illumination lens 32 and uniformly projected to the pixel 4. Both the first illumination lens 31 and the second illumination lens 32 include any one or more of a spherical surface, an aspherical surface, and a free-form surface. The material of both the first illumination lens 31 and the second illumination lens 32 includes any one or any plurality of glass and plastic. The illumination lens group 3 collects and converges the light emitted by the light source 2 through the matching and combination of different lenses, and uniformly illuminates the pixels 4.
The picture elements 4 comprise a film or luminescent picture element 4 printed with a projection pattern. The luminescent pixel 4 includes, but is not limited to, a Mini LED, a micro LED, an LCD liquid crystal screen, a TFT screen, an Lcos, or a digital micromirror DMD that is illuminated. By the arrangement of the picture elements 4, the vehicle-mounted projection lamp can project a preset projection pattern to the ground.
The imaging lens group 5 comprises at least two imaging lenses to project a clear, low color difference, low distortion pattern of the picture elements 4 onto the image plane 80. The imaging lens group 5 includes a first imaging lens 51, a second imaging lens 52, and a third imaging lens 53. The first imaging lens 51, the second imaging lens 52, and the third imaging lens 53 each include any one or more of a spherical surface, an aspherical surface, and a free-form surface. The materials of the first imaging lens 51, the second imaging lens 52, and the third imaging lens 53 include any one or more of glass and plastic.
The lens main surface 50 of the imaging lens group 5 is positioned inside the imaging lens group 5 or outside the imaging lens group 5. The main surface 50 of the imaging lens group 5 is a virtual plane of the lens, and the positions of the main surfaces 50 of the different lenses are different, and some are inside the lens and some are outside the lens. However, the position of one of the lens main faces 50 can be uniquely determined, and can be calculated by matrix optics according to the specific structure, or can be calculated according to the incident and emergent heights and angles of the application edge light and the main light. In practical applications, the lens main surface 50 can be directly calculated by software according to design requirements, and after a lens is designed, the specific position of the main surface can be directly checked by software without manual calculation.
The diaphragm 6 is arranged between the picture element 4 and the imaging lens group 5, or the diaphragm 6 is arranged at a side of the imaging lens group 5 away from the picture element 4 in the direction of the optical axis 7, or the diaphragm 6 is arranged inside the imaging lens group 5. The diaphragm 6 is limiting the beam and imaging range. The diaphragm 6 may be disposed at a specific position between the pixel 4 and the imaging lens group 5, or disposed at a specific position behind the imaging lens group 5, or at a specific position inside the imaging lens group 5, where the diaphragm 6 mainly plays a role in limiting the light beam, so as to adjust the intensity of the light beam, and help to enhance the imaging effect of the projection lamp. And can be adjusted according to actual use conditions.
Thus, when the extension planes of the object plane 40, the image plane 80 and the lens main surface 50 intersect in a straight line, the three satisfy the law of the force, which was originally used in the field of photography, when the main body plane, the lens plane and the influencing plane are compared with a straight line, the image plane 80 can be comprehensively and clearly imaged, and the application of the law of the Moire to the embodiment can avoid the problem of unclear defocusing imaging caused by the misalignment of the image plane 80 and the focal plane 9 due to oblique projection, so as to obtain a comprehensive and clear image.
It should be noted that, in this embodiment, by designing the placement position and angle of the pixel 4, the pixel 4 forms a certain angle with the optical axis 7, the method meets the law of Moire, solves the problem of inconsistent imaging definition of the full field of view of the oblique-projection vehicle-mounted lens, and achieves the effect of clear imaging of the full field of view. Through the structure of the angle adjustment of the pixel 4, the adoption of an MLA micro-lens array projection mode can be avoided, the processing difficulty is reduced, and the processing cost is reduced.
According to the vehicle provided by the invention, the projector lamp light system is arranged on the vehicle body.
In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and are not to be construed as limiting the present application.
The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the invention. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.
Claims (10)
1. The projection lamp optical system is characterized by comprising a light source (2), an illumination lens group (3), a pixel (4) and an imaging lens group (5), wherein the illumination lens group (3) comprises at least one illumination lens, and the imaging lens group (5) comprises at least two imaging lenses;
the light source (2), the illumination lens group (3), the pixel (4) and the imaging lens group (5) are sequentially arranged on the optical axis (7), and an extension line of the pixel (4), a lens main surface (50) of the imaging lens group (5) and an extension line of the image plane (80) intersect at one point.
2. Projection lamp optical system according to claim 1, characterized in that the angle β of the picture element (4) with the optical axis (7) satisfies:
wherein O is an object point of the pixel (4) on the optical axis (7), O ' is a corresponding image point, alpha is an included angle between the image plane (80) and the optical axis (7), L is an object distance of the point O on the optical axis (7), and L ' is an image distance of the image point O ' on the optical axis (7).
3. Projection lamp optical system according to claim 2, characterized in that the angle β of the picture element (4) with the optical axis (7) satisfies: beta is less than 90 DEG and 10 DEG.
4. Projection lamp optical system according to claim 1, characterized in that the picture elements (4) comprise a film or luminescent picture element printed with a projection pattern.
5. The projection lamp optical system according to claim 1, wherein the illumination lens group (3) comprises a first illumination lens (31) and a second illumination lens (32);
the imaging lens group (5) includes a first imaging lens (51), a second imaging lens (52), and a third imaging lens (53);
the first illumination lens (31), the second illumination lens (32), the first imaging lens (51), the second imaging lens (52) and the third imaging lens each include any one or more of a spherical surface, an aspherical surface and a free-form surface.
6. The projection lamp optical system of claim 5, wherein the materials of the first illumination lens (31), the second illumination lens (32), the first imaging lens (51), the second imaging lens (52), and the third imaging lens (52) comprise any one or more of glass and plastic.
7. Projection lamp optical system according to claim 1, characterized in that the lens main surface (50) of the imaging lens group (5) is located inside the imaging lens group (5) or outside the imaging lens group (5).
8. Projection lamp optical system according to claim 1, further comprising a diaphragm (6), said diaphragm (6) being arranged between the picture element (4) and the imaging lens group (5);
or the diaphragm (6) is arranged at one side of the imaging lens group (5) far away from the pixel (4) along the direction of the optical axis (7);
or the diaphragm (6) is arranged inside the imaging lens group (5).
9. The projection lamp optical system according to claim 1, further comprising a circuit board (1), the circuit board (1) being electrically connected with the light source (2).
10. A vehicle characterized in that the projection lamp optical system according to any one of claims 1 to 9 is employed, the projection lamp optical system being mounted on a vehicle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310458882.5A CN116520627A (en) | 2023-04-25 | 2023-04-25 | Projection lamp optical system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310458882.5A CN116520627A (en) | 2023-04-25 | 2023-04-25 | Projection lamp optical system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116520627A true CN116520627A (en) | 2023-08-01 |
Family
ID=87396968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310458882.5A Pending CN116520627A (en) | 2023-04-25 | 2023-04-25 | Projection lamp optical system and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116520627A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117255183A (en) * | 2023-11-13 | 2023-12-19 | 宜宾市极米光电有限公司 | Projection method and projection apparatus |
-
2023
- 2023-04-25 CN CN202310458882.5A patent/CN116520627A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117255183A (en) * | 2023-11-13 | 2023-12-19 | 宜宾市极米光电有限公司 | Projection method and projection apparatus |
| CN117255183B (en) * | 2023-11-13 | 2024-03-29 | 宜宾市极米光电有限公司 | Projection method and projection apparatus |
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