CN209746340U - Projection system of two patterns of single channel - Google Patents
Projection system of two patterns of single channel Download PDFInfo
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- CN209746340U CN209746340U CN201920703435.0U CN201920703435U CN209746340U CN 209746340 U CN209746340 U CN 209746340U CN 201920703435 U CN201920703435 U CN 201920703435U CN 209746340 U CN209746340 U CN 209746340U
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Abstract
The utility model provides a single-channel double-pattern projection system, which comprises a first projection source, a second projection source, a narrow-band reflector plate and a projection lens group, wherein the narrow-band reflector plate and the optical axis of the projection lens group form a 45-degree included angle, the surface of the narrow-band reflector plate close to one side of the projection lens group is a reflecting surface, and the surface of the narrow-band reflector plate far away from one side of the projection lens group is a transmission surface; the first projection source is positioned on one side of the transmission surface of the narrow-band reflector, the optical axis of the first projection source is collinear with the optical axis of the projection lens group, the second projection source is positioned on one side of the reflection surface of the narrow-band reflector, and the optical axis of the second projection source is vertical to the optical axis of the projection lens group; the peak wavelength of the light emitted by the first projection source is p, the peak wavelength of the light emitted by the second projection source is q, the wavelength range of the reflection spectrum of the narrow-band reflection film is a-b, and q belongs to [ a, b ]. The utility model discloses can form the projection effect of two kinds of different patterns through the projection lens system of single channel, reliable performance is high.
Description
Technical Field
The utility model relates to a projection system specifically discloses a projection system of two patterns of single channel.
Background
Projection systems are optical systems that image an object onto a projection screen after illumination. The projection system can be used for the body of an automobile and projects luminous patterns to the ground for welcoming guests, warning or decoration.
In the prior art, the projection system has only one channel, that is, the projection lens has only one pattern surface, and the pattern surface can be a traditional fixed film, a changeable LCD screen, or a plurality of films connected by a movable mechanism. For a single-channel fixed film structure, the projection effect of only one pattern can be realized; for a changeable LCD screen, although various projection effects can be formed, the input cost of a projection system is high, and the variable LCD screen cannot pass a reliability test when being used for a vehicle; to mobilizable many film structures, need set up extra movable mechanism and be used for rotating each film in order to realize different projection effects, movable mechanism includes parts such as motor, rotation connection structure, will lead to whole projection system's volume to show the increase, is unfavorable for using the overall arrangement, and overall structure's reliability is low, in case take place vibrations will lead to projection system to be damaged very easily.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide a single-channel dual-pattern projection system, which can form the projection effect of two different patterns through a single-channel projection lens, and has a high reliability of the system structure.
In order to solve the prior art problem, the utility model discloses a single-channel double-pattern projection system, which comprises a first projection source, a second projection source, a narrow-band reflector plate and a projection lens group, wherein the narrow-band reflector plate and the optical axis of the projection lens group form a 45-degree included angle, the surface of one side of the narrow-band reflector plate close to the projection lens group is a reflecting surface, and the surface of one side of the narrow-band reflector plate far away from the projection lens group is a transmission surface;
The first projection source is positioned on one side of the transmission surface of the narrow-band reflector, the optical axis of the first projection source is collinear with the optical axis of the projection lens group, the second projection source is positioned on one side of the reflection surface of the narrow-band reflector, and the optical axis of the second projection source is vertical to the optical axis of the projection lens group;
The peak wavelength of the light emitted by the first projection source is p, the peak wavelength of the light emitted by the second projection source is q, the wavelength range of the reflection spectrum of the narrow-band reflection film is a-b, and q belongs to [ a, b ].
Further, the first projection source comprises a first light source, a first collimating lens and a first film which are arranged in sequence, and the first film is positioned on one side of the first collimating lens, which is close to the narrow-band reflector; the second projection source comprises a second light source, a second collimating lens and a second film which are arranged in sequence, and the second film is positioned on one side of the second collimating lens, which is close to the narrow-band reflector.
Furthermore, the narrow-band reflecting sheet is a glass sheet plated with a narrow-band reflecting film.
Further, the projection lens group comprises a first projection lens, a second projection lens and a third projection lens which are arranged in sequence.
Furthermore, the first projection lens and the third projection lens are both convex lenses, and the second projection lens is a concave lens.
the utility model discloses still disclose the projection design method of the two patterns of single channel, including following step:
A. Preparing a narrow-band reflector with a reflection spectrum wavelength range of a-b, preparing a first projection source with a peak wavelength of p, preparing a second projection source with a peak wavelength of q, and belonging to [ a, b ];
B. The narrow-band projection lens system comprises a narrow-band reflector and a projection lens group, wherein a first projection source is arranged on one side of the narrow-band reflector, a second projection source and the projection lens group are arranged on the other side of the narrow-band reflector, the optical axes of the first projection source and the projection lens group are collinear, the optical axis of the projection lens group and the narrow-band reflector form an included angle of 45 degrees, and the optical axis of a second collimating lens is perpendicular to the optical axis of the projection lens group.
Further, in the step a, the half widths of the spectra of the first projection source and the second projection source are both set to be less than 30nm, and the peak wavelength difference between the first projection source and the second projection source is set to be greater than 80 nm.
The utility model has the advantages that: the utility model discloses a projection system of two patterns of single channel, set up the projection source that two spectral energy district do not coincide basically and be equipped with a common projection lens group, combine the narrowband reflection configuration with strong points, the projection effect that can form two kinds of different patterns through the projection lens system of single channel, thereby satisfy the display demand to different patterns under the different situation, the system architecture is succinct relatively, occupation space is little, the input cost is lower relatively, the overall arrangement installation degree of difficulty during the application is low, and certain transaction can be resisted to whole projection system, reliability is high.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a diagram of a spectral relationship between a narrow-band reflector and two projection sources according to an embodiment of the present invention.
fig. 3 is a schematic diagram of a projection light path of a first projection source according to an embodiment of the present invention during operation.
fig. 4 is a schematic diagram of a projection light path of a second projection source in operation according to an embodiment of the present invention.
Fig. 5 is a graph of the spectral relationship between the narrow-band reflector and two projection sources in the second embodiment of the present invention.
fig. 6 is a schematic diagram of a projection light path of the second embodiment of the present invention when the first projection source works.
fig. 7 is a schematic diagram of a projection light path of a second projection source according to an embodiment of the present invention during operation.
the reference signs are: the projection lens comprises a first projection source 10, a first light source 11, a first collimating lens 12, a first film 13, a second projection source 20, a second light source 21, a second collimating lens 22, a second film 23, a narrow-band reflector 30, a projection lens group 40, a first projection lens 41, a second projection lens 42 and a third projection lens 43.
Detailed Description
For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
Refer to fig. 1 to 7.
The utility model discloses basic embodiment discloses a projection system of two patterns of single channel, as shown in fig. 1, including first projection source 10, second projection source 20, narrowband reflector plate 30 and projection lens group 40, narrowband reflector plate 30 is also called narrowband reflection filter, and narrowband reflector plate 30 and projection lens group 40's optical axis become 45 degrees contained angles, and the surface that narrowband reflector plate 30 is close to projection lens group 40 one side is the plane of reflection, and the surface that narrowband reflector plate 30 keeps away from projection lens group 40 one side is the plane of transmission;
The first projection source 10 is positioned on one side of the transmission surface of the narrow-band reflector 30, the optical axis of the first projection source 10 is collinear with the optical axis of the projection lens group 40, the second projection source 20 is positioned on one side of the reflection surface of the narrow-band reflector 30, the optical axis of the second projection source 20 is perpendicular to the optical axis of the projection lens group 40, and the intersection point of the optical axis of the first projection source 10, the optical axis of the second projection source 20 and the optical axis of the projection lens group 40 is positioned at the center of the narrow-band reflector 30;
The peak wavelength of the light emitted by the first projection source 10 is p, the peak wavelength of the light emitted by the second projection source 20 is q, the wavelength range of the reflection spectrum of the narrow-band reflection film is a-b, and q belongs to [ a, b ], that is, the light emission spectrum of the first projection source 10 is not in the reflection spectrum of the narrow-band reflection film, and the light emission spectrum of the second projection source 20 is in the reflection spectrum of the narrow-band reflection film.
Light emitted by the first projection source 10 can be directly transmitted through the narrow-band reflector 30 to the projection lens group 40, thereby forming a first projection pattern; light emitted from the second projection source 20 is incident on the surface of the narrow-band reflection sheet 30 and then reflected into the projection lens group 40, thereby forming a second projection pattern.
In the first embodiment, based on the basic embodiment, the reflection spectrum wavelength range of the narrow-band reflector 30 is 500-560 nm, the peak wavelength of the first projection source 10 is near 640nm, the peak wavelength of the second projection source 20 is near 520nm, that is, the narrow-band reflector 30 has a reflection effect on green light, the first projection source 10 emits a red light pattern, the second projection source 20 emits a green light pattern, and the spectrum relationship diagram of the first projection source 10, the second projection source 30 and the narrow-band reflector 30 is shown in fig. 2. The first projection source 10 can form a first red pattern, the second projection source 20 can form a second green pattern, when the first pattern needs to be applied, the first projection source 10 is turned on, the second projection source 20 is turned off, the projection light path is as shown in fig. 3, and light emitted by the first projection source 10 is transmitted through the narrow-band reflector 30 and then projected through the projection lens group 40 to obtain the first pattern; when the second pattern needs to be applied, the second projection source 20 is turned on, the first projection source 10 is turned off, the projection light path is as shown in fig. 4, and the light emitted by the second projection source 20 is reflected on the narrow-band reflective sheet 30 and then projected through the projection lens group 40 to obtain the second pattern.
In the second embodiment, based on the basic embodiment, the reflection spectrum wavelength range of the narrow-band reflector 30 is 560nm to 610nm, the peak wavelength of the first projection source 10 is near 640nm, the peak wavelength of the second projection source 20 is near 590nm, that is, the narrow-band reflector 30 has a reflection effect on yellow light, the first projection source 10 emits a red light pattern, the second projection source 20 emits a yellow light pattern, and the spectrum relationship diagram of the first projection source 10, the second projection source 30 and the narrow-band reflector 30 is shown in fig. 5. The first projection source 10 can form a red third pattern, the second projection source 20 can form a yellow fourth pattern, when the third pattern needs to be applied, the first projection source 10 is turned on, the second projection source 20 is turned off, the projection light path is as shown in fig. 6, and light emitted by the first projection source 10 is transmitted through the narrow-band reflector 30 and then is projected through the projection lens group 40 to obtain the third pattern; when the fourth pattern needs to be applied, the second projection source 20 is turned on, the first projection source 10 is turned off, the projection light path is as shown in fig. 7, and the light emitted by the second projection source 20 is reflected on the narrow-band reflective sheet 30 and then projected through the projection lens group 40 to obtain the fourth pattern.
The utility model discloses set up the projection source that two spectral energy district do not coincide basically and be equipped with a common projection lens group, combine the narrowband reflection structure with strong pertinence, the projection lens system that can pass through the single channel forms the projection effect of two kinds of different patterns to satisfy the display demand to different patterns under the different situation, the system architecture is succinct relatively, occupation space is little, the input cost is relatively lower, the overall arrangement installation degree of difficulty during the application is low, and certain transaction can be resisted to whole projection system, reliability is high.
In this embodiment, the first projection source 10 includes a first light source 11, a first collimating lens 12 and a first film 13, which are sequentially disposed, light emitted from the first light source 11 is collimated by the first collimating lens 12 and then enters the first film 13, so as to form a first original projection image matched with the first film 13, and the first film 13 is located on one side of the first collimating lens 12 close to the narrow-band reflector 30; the second projection source 20 includes a second light source 21, a second collimating lens 22 and a second film 23, which are sequentially arranged, light emitted by the second light source 21 is collimated by the second collimating lens 22 and then enters the second film 23, so as to form a second original projection image matched with the second film 23, the second film 23 is located on one side of the second collimating lens 22 close to the narrow-band reflector 30, optical axes of the first light source 11, the first collimating lens 12 and the first film 13 are collinear, optical axes of the second light source 21, the second collimating lens 22 and the second film 23 are collinear, and the first film 13 and the second film 23 are arranged to have different pattern structures according to different application requirements.
In the present embodiment, the narrow-band reflection sheet 30 is a glass sheet coated with a narrow-band reflection film, and the narrow-band reflection film is a reflection film having a specific reflection bandwidth, and has an effect of high transmittance for light rays outside the reflection bandwidth.
In the present embodiment, the projection lens group 40 includes a first projection lens 41, a second projection lens 42, and a third projection lens 43, which are disposed in this order. Preferably, the first projection lens 41 and the third projection lens 43 are both convex lenses, the second projection lens 42 is a concave lens, and the first projection lens 41, the second projection lens 42 and the third projection lens 43 can achieve the light adjusting effect of a general projection lens barrel.
Design the utility model discloses, including following step:
A. Preparing a narrow-band reflector 30 with a reflection spectrum wavelength range of a-b, preparing a first projection source 10 with a peak wavelength of p, and preparing a second projection source 20 with a peak wavelength of q, wherein q belongs to [ a, b ];
B. The first projection source 10 is arranged on one side of the narrow-band reflector 30, the second projection source 20 and the projection lens group 40 are arranged on the other side of the narrow-band reflector 30, the optical axes of the first projection source 10 and the projection lens group 40 are collinear, the optical axis of the projection lens group 40 and the narrow-band reflector 30 form an included angle of 45 degrees, and the optical axis of the second collimating lens 22 is perpendicular to the optical axis of the projection lens group 40.
In step a, setting the half widths of the spectra of the first projection source 10 and the second projection source 20 to be less than 30nm, and setting the peak wavelength difference between the first projection source 10 and the second projection source 20 to be greater than 80nm, preferably, b-a ≈ 60nm, it is necessary to ensure that the main spectral energy regions of the two projection sources do not overlap, preferably, the spectral energy regions of the two projection sources do not overlap at all, which means that the spectral widths of the first projection source 10 and the second projection source 20 need to be narrowed, and at the same time, it is necessary to set a sufficiently large distance between the spectral peaks of the first projection source 10 and the second projection source 20, which is effective to avoid the spectral energy regions of the two projection sources from overlapping.
the above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (5)
1. The single-channel double-pattern projection system is characterized by comprising a first projection source (10), a second projection source (20), a narrow-band reflector (30) and a projection lens group (40), wherein the narrow-band reflector (30) and the optical axis of the projection lens group (40) form an included angle of 45 degrees, the surface of one side, close to the projection lens group (40), of the narrow-band reflector (30) is a reflecting surface, and the surface of one side, far away from the projection lens group (40), of the narrow-band reflector (30) is a transmission surface;
the first projection source (10) is positioned on one side of the transmission surface of the narrow-band reflector (30), the optical axis of the first projection source (10) is collinear with the optical axis of the projection lens group (40), the second projection source (20) is positioned on one side of the reflection surface of the narrow-band reflector (30), and the optical axis of the second projection source (20) is perpendicular to the optical axis of the projection lens group (40);
The peak wavelength of the light emitted by the first projection source (10) is p, the peak wavelength of the light emitted by the second projection source (20) is q, and the wavelength range of the reflection spectrum of the narrow-band reflection film is a-b, and q belongs to [ a, b ].
2. A single-channel dual-pattern projection system according to claim 1, wherein the first projection source (10) comprises a first light source (11), a first collimating lens (12) and a first film (13) which are arranged in sequence, and the first film (13) is located on one side of the first collimating lens (12) close to the narrow-band reflector (30); the second projection source (20) comprises a second light source (21), a second collimating lens (22) and a second film (23), wherein the second light source, the second collimating lens (22) and the second film (23) are sequentially arranged, and the second film (23) is located on one side, close to the narrow-band reflector (30), of the second collimating lens (22).
3. a single channel dual pattern projection system as claimed in claim 1, wherein said narrow band reflector sheet (30) is a glass sheet coated with a narrow band reflective film.
4. A single-channel dual-pattern projection system as claimed in claim 1, wherein the projection lens group (40) comprises a first projection lens (41), a second projection lens (42) and a third projection lens (43) arranged in sequence.
5. A single-channel dual-pattern projection system as claimed in claim 4, wherein the first projection lens (41) and the third projection lens (43) are both convex lenses, and the second projection lens (42) is a concave lens.
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| CN201920703435.0U CN209746340U (en) | 2019-05-16 | 2019-05-16 | Projection system of two patterns of single channel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082993A (en) * | 2019-05-16 | 2019-08-02 | 广东烨嘉光电科技股份有限公司 | A kind of optical projection system and its Projection Design method of single channel double patterning |
| CN114624949A (en) * | 2022-03-09 | 2022-06-14 | 广州西岛电子科技有限公司 | Light-resistant curtain, equipment and preparation method |
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2019
- 2019-05-16 CN CN201920703435.0U patent/CN209746340U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082993A (en) * | 2019-05-16 | 2019-08-02 | 广东烨嘉光电科技股份有限公司 | A kind of optical projection system and its Projection Design method of single channel double patterning |
| CN114624949A (en) * | 2022-03-09 | 2022-06-14 | 广州西岛电子科技有限公司 | Light-resistant curtain, equipment and preparation method |
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