CN111256094B - Optical device, optical system and optical curtain wall projection system - Google Patents
Optical device, optical system and optical curtain wall projection system Download PDFInfo
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- CN111256094B CN111256094B CN202010073980.3A CN202010073980A CN111256094B CN 111256094 B CN111256094 B CN 111256094B CN 202010073980 A CN202010073980 A CN 202010073980A CN 111256094 B CN111256094 B CN 111256094B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/10—Outdoor lighting
- F21W2131/107—Outdoor lighting of the exterior of buildings
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Abstract
The application relates to an optical device, an optical system and an optical curtain wall projection system, which can ensure that the focuses formed by all luminous sections of a light source body after penetrating through a focusing mirror are not on the same focal plane, and the focal positions of all the focuses gradually deviate along the direction deviating from the optical axis of the focusing mirror to form a plurality of dispersed and non-overlapping light spots which are combined to form a light zone with a comet shape, so that the light spots corresponding to the luminous zones positioned between the near and far axial ends of the light source body can illuminate the vertical surface of a target body, the focal planes of all the light spots are sequentially and continuously arranged along the vertical surface of the target body, the illuminated area on the vertical surface of the corresponding target body is formed by continuously accumulating a plurality of light spots with the same or similar energy, the illumination intensity of the light spots projected on the vertical surface of the target body cannot be attenuated along with the distance from the light source body, and the problem that when the existing lamp illuminates the target body such as a building is solved, the generated problem that the brightness of the near lamp end and the far lamp end is obviously different is solved, and the irradiation effect on the vertical surface of the target body is improved.
Description
Technical Field
The application relates to the technical field of illumination, in particular to an optical device, an optical system and an optical curtain wall projection system.
Background
The lighting industry has some lighting fixtures for illuminating the facade of a target, such as a building or column, which are typically mounted proximate to the facade of the target and then project light onto the facade. However, after the existing lamp is projected to the facade of the target body, the following can be observed obviously: the illumination gradually weakens from the near lamp end to the far lamp end, so that the brightness of the near lamp end and the brightness of the far lamp end of the building are obviously different, and the problem of poor visual effect exists.
Disclosure of Invention
In view of the above, it is necessary to provide an optical apparatus, an optical system and an optical curtain wall projection system for solving the technical problem of poor irradiation effect on the vertical surface of the target in the conventional technology.
An optical device for illuminating a facade of a target body, comprising: a light source body and a focusing mirror;
the light source body is arranged on the incident surface side of the focusing mirror, extends along a direction which is not parallel to the optical axis of the focusing mirror, and extends towards a direction close to or far away from the incident surface of the focusing mirror.
In one embodiment, the projection of the light source body from any direction falls on the same side of the optical axis of the focusing mirror.
In one embodiment, the light source body is in a strip shape, the light emitting points on the light source body are uniformly arranged, and the illumination brightness of each light emitting point is consistent.
In one embodiment, a plurality of light emitting points with different light colors are arranged on the light source body.
In one embodiment, the focusing lens is a fresnel condenser lens.
In an embodiment, the above optical device further includes a protective case for protecting the light source body and the focusing mirror, and the light source body and the focusing mirror are both disposed on the protective case.
In one embodiment, there is also provided an optical system comprising a plurality of optical devices as described above; the optical devices are arranged at the bottom of the target body side by side and used for irradiating corresponding to-be-irradiated areas on the target body from the bottom.
In one embodiment, there is also provided an optical curtain wall projection system comprising a light source control system, an image decoding system, and a plurality of optical devices as described above; the light source body is provided with a plurality of light emitting points with different light colors; the light-emitting points are electrically connected with the light source control system, and the image decoding system is electrically connected with the light source control system; the optical devices are arranged at the bottom of the target body side by side and used for irradiating corresponding to-be-irradiated areas on the target body from the bottom.
The optical device, the optical system and the optical curtain wall projection system provided by the application can ensure that the focuses formed by all the luminous sections of the light source body after penetrating through the focusing mirror are not on the same focal plane, and the focal positions of all the focuses gradually deviate along the direction deviating from the optical axis of the focusing mirror to form a plurality of dispersed and non-overlapped light spots which are combined to form a light zone with a comet shape, so that the light spots corresponding to the luminous zones positioned between the near and far axial ends of the light source body can illuminate the vertical surface of a target body, the focal planes of all the light spots are sequentially and continuously arranged along the vertical surface of the target body, the illuminated area on the vertical surface of the corresponding target body is formed by continuously accumulating a plurality of light spots with the same or similar energy, the illumination intensity of the light spots projected on the vertical surface of the target body cannot be attenuated along with the distance from the light source body, and the problem that when the existing lamp is used for illuminating the target body vertical surfaces of buildings and the like is solved, the generated problem that the brightness of the near lamp end and the far lamp end is obviously different is solved, and the irradiation effect on the vertical surface of the target body is improved.
Drawings
FIG. 1 is a schematic representation of focal planes corresponding to the proximal and distal axial ends of an optical device in one embodiment;
FIG. 2 is a schematic view of a spot in a focal plane at the proximal end of an optical device in one embodiment;
FIG. 3 is an illumination diagram of an optical device in one embodiment;
FIG. 4 is a diagram illustrating the actual effect of the optical device on the target object in one embodiment;
FIG. 5 is a schematic diagram of an optical device according to another embodiment;
fig. 6 is an illumination schematic of an optical device in another embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. The terms "first," "second," and the like, as used herein do not denote any particular quantity or order, but rather are used to distinguish one element from another.
Example one
The embodiment provides an optical device, the optical device 10 is mainly used for illuminating the elevation of a target body such as a building body, a cylindrical surface, a wall body, etc., as shown in fig. 1, the optical device 10 may include a light source body 110 and a focusing mirror 120; the light source body 110 is disposed on the incident surface side of the focusing mirror 120, the light source body 110 extends in a direction non-parallel to the optical axis 130 of the focusing mirror 120, and the light source body 110 extends in a direction close to the incident surface of the focusing mirror 120. In order to irradiate the vertical surface of the target, the present apparatus 10 may be disposed at the bottom end of the vertical surface, and the light-emitting surface of the focusing mirror 120 is directed to the target.
Next, a specific structure and an operation principle of the optical device 10 are explained, as shown in fig. 2, the light source body 110 of the optical device 10 has a certain length, and it should be noted that the light source body 110 refers to a light emitting region of a lamp herein, specifically, the light source body 110 is long-strip-shaped in the present embodiment; the length of the light source body 110 may be set corresponding to the height of the region to be irradiated of the target body. As analyzed from fig. 2, since the end of the light source body 110 far from the optical axis 130 of the focusing mirror 120 (hereinafter, generally referred to as the distal end 111) is closer to the focusing mirror than the end of the light source body close to the optical axis 130 of the focusing mirror 120 (hereinafter, generally referred to as the proximal end 112), the light source body 110 extends in a direction non-parallel to the optical axis 130 of the focusing mirror 120, so that the focal points formed by the light emitting sections of the light source body 110 after penetrating through the focusing mirror 120 are not on the same focal plane, and the respective focal positions are gradually deviated in a direction deviating from the optical axis 130 of the focusing mirror 120, that is, the actual focal central axes of the respective focal points are not overlapped, so that the respective focal points actually form an "off-axis and out-of-focus" situation; as shown in fig. 2, specifically, we analyze the light emitted from the proximal end 112 and the distal end 111 of the light source body 110, the light emitted from the proximal end 112 is focused on the first focal plane 141 after being focused by the focusing mirror 120, and the light emitted from the distal end 111 is focused on the second focal plane 142 after being focused by the focusing mirror 120, so that the focal points corresponding to the light emitted from the light emitting regions on the light source body 110 between the proximal end 112 and the distal end 111 are correspondingly distributed in the interval 143 between the first focal plane 141 and the second focal plane 142. For further analysis, if we assume that the whole device is irradiated on the first focal plane 141, and the light emitted from the proximal end 112 passes through the focusing mirror 120 and is focused on the first focal plane 141, referring to the focal point 1120 corresponding to the proximal end 112 and the light spot 1110 corresponding to the distal end 111 as shown in fig. 2, we will find that except for the light emitted from the proximal end 112 being focused on the first focal plane 141, the light rays corresponding to other light-emitting sections are not focused on the first focal plane 141, but form a plurality of dispersed and non-overlapping light spots, and these light spots combine to form a light area with a comet shape. From the foregoing analysis, it can be known that the light spot corresponding to the proximal end 112 is more focused (or the light spot corresponding to the distal end 111 is more dispersed) than the light spot corresponding to the distal end 112, that is, the energy density of the light spot corresponding to the proximal end 112 is relatively more concentrated, and if the light spot corresponding to the proximal end 112 continues to be diffused and irradiated in a direction away from the first focal plane 141, the light spot corresponding to the proximal end 112 is also more and more dispersed (because of defocusing). Next, we analyze again using the process (we analyze only the two extreme positions of the light source body's proximal 112 and distal 111 axes): as shown in fig. 3 below, the side wall 210 of the building 20 is introduced in fig. 3, when in use, the present device 10 is placed at the bottom end of the building 20, light is irradiated towards the top end along the wall surface, since the light spot corresponding to the far-axis end 111 is deviated from the optical axis, and the light spot corresponding to the far-axis end 111 is in a dispersed state due to defocusing, as shown by the first light spot 311 in fig. 3, and the light spot corresponding to the far-axis end 111 is not in an enlarged state on the focal plane, a part of the light spot corresponding to the far-axis end 111 is firstly irradiated on the wall surface, that is, the wall surface at the bottom of the building is illuminated, and the first light ray 312 in a dotted line part shown in fig. 3 represents the light ray projected by the light spot corresponding to the far-axis end 111 on the wall surface; then we analyze the spot for the paraxial 112: since the near-axis end 112 of the light source body 110 is farther away from the wall surface than the far-axis end 111, since the light spot corresponding to the near-axis end 112 is smaller in focusing shape at first and cannot extend to the wall surface at the bottom of the building, but as extending further, the light spot corresponding to the near-axis end 112 is enlarged and dispersed due to defocusing as shown by the second light spot 321 in fig. 3, since the light source body 110 has a size, the image of the light source body 110 is smaller as the image is closer to the focusing mirror 120, the image of the light source body 110 formed through the focusing mirror 120 is smaller, conversely, the image of the light source body 110 is larger as the image is farther from the focusing mirror 120, so that the light spot is enlarged as the image is larger, the light spot corresponding to the near-axis end 112 is enlarged as shown by the third light spot 322 in fig. 3, the light spot corresponding to the near-axis end 112 is enlarged after being dispersed, and the second light spot corresponding to the near-axis end 112 is enlarged as shown by the dashed line portion 323, the light projected on the wall is projected to the wall surface extending to the upper part or the top of the building, so that the upper part or the top of the building is illuminated, light spots corresponding to the light emitting area between the near shaft end 112 and the far shaft end 111 of the light source body 110 are enlarged from bottom to top along the wall surface of the building 20, so that the middle area 210 is illuminated, and the focal planes of the light spots are sequentially and continuously arranged from bottom to top along the wall surface of the building 20, and correspondingly, the illuminated area on the wall surface is formed by continuously accumulating a plurality of light spots with the same or similar energy, so that the illuminance of the light spots projected on the wall surface of the building 20 cannot be attenuated along with the distance from the light source body, and the problem that the brightness of the near lamp end and the far lamp end is obviously different when the existing lamp illuminates the building is solved. In other embodiments, if the illumination intensity is desired to be enhanced, the light intensity of the proximal end 112 of the light source body 110 can be increased (e.g., by adjusting the current and voltage of the light emitting points at different positions). In other embodiments, the light intensity of the corresponding position on the light source body 110 may be adjusted according to the requirement of the irradiation intensity at different height positions on the wall surface. In this embodiment, it is preferable that the light source body 110 is in a strip shape, the light emitting points on the light source body 110 are uniformly arranged, the illumination brightness of each light emitting point is uniform, and the light emitting intensity of each position of the light source body 110 is the same, as shown in fig. 4, so that an illumination area with uniformly distributed illumination intensity can be formed.
In one embodiment, the optical device 10 may further include a protective housing. The protective casing may be made of transparent plastic or metal, and the light source body and the focusing lens may be accommodated inside the protective casing for protecting the light source body 110 and the focusing lens 120. The scheme of this embodiment can be applicable to outdoor scene, and optical device 10 can shine the outer wall facade of the building body, and this protection casing can prevent that light source body 110 and focusing mirror 120 therein from suffering the harm of sand blown by the wind rainwater.
In the present embodiment, an optical system is further provided, which may include a plurality of optical devices 10, where the optical devices 10 may be arranged side by side at the bottom of a vertical surface of a target body, and used for illuminating corresponding regions to be illuminated on the vertical surface from the bottom. In the concrete use, can be according to optical device 10 of suitable quantity like the wall size of building body, then can place these optical device 10 side by side like the wall bottom of building body, reach the effect of shining bigger wall, form "wash the wall effect" promptly.
In the present embodiment, the projection of the light source body 110 from any direction falls on the same side of the optical axis 130 of the focusing mirror 120. Thus, interference light spots generated by the light source body 110 extending to the other side of the optical axis 130 of the focusing mirror 120 are avoided, and the light spots on each illumination area on the wall surface are clearer and more uniform.
In this embodiment, the focusing lens 120 is a fresnel condensing lens, and since the fresnel condensing lens has a thinner structure, the device can be thinner and thinner.
In this embodiment, the light source body 110 is provided with a plurality of light emitting points with different colors, so that the light emitting points in the corresponding interval on the light source body 110 can be instructed to emit the preset color according to the preset requirement, and the preset color is correspondingly irradiated on the predetermined interval on the wall surface.
In this embodiment, an optical curtain wall projection system is further provided, which includes a light source control system, an image decoding system and the optical device 10; the image decoding system is electrically connected with the light source control system; a plurality of optical devices 10 are arranged side by side at the bottom of the target body for illuminating from the bottom a corresponding area to be illuminated on the target body. Therefore, when the LED lamp is used, the image decoding system is connected with the image signal source, then the image decoding system decodes and converts the signal into an instruction to be transmitted to the light source control system, and then the light source control system instructs the light emitting points in the relevant area of the light source body to emit corresponding light colors to form pixel points, so that a picture screen is formed on the wall surface.
Example two
The difference between this embodiment and the first embodiment is: the light source body 110 extends in a direction away from the incident surface of the focusing mirror 120. As shown in fig. 5, specifically, in this embodiment, the far axial end 111 of the light source body 110 is farther away from the incident surface of the focusing mirror 120 than the near axial end 112, the light emitted from the near axial end 112 is focused on the first focal plane 141 after being focused by the focusing mirror 120, the light emitted from the far axial end 111 is focused on the second focal plane 142 after being focused by the focusing mirror 120, and since the light source body 110 is sized, the closer the image of the light source body 110 is to the focusing mirror, the smaller the image formed by the light source body 110 through the focusing mirror 120 is, and the farther the image of the light source body 110 is from the focusing mirror 120, the larger the image formed through the focusing mirror 120 is, so it can be analyzed that the second focal plane 142 corresponding to the far axial end 111 is closer to the focusing mirror 120 than the first focal plane 141 corresponding to the near axial end 112, and the focal points corresponding to the light emitting regions on the light source body 110 between the near axial end 112 and the far axial end 111 are distributed between the first focal plane 141 and the second focal plane 142 Within the interval of (a); as shown in fig. 6 below, fig. 6 illustrates the side wall of the building 20, when in use, the present device 10 is placed at the bottom end of the building 20 and light is emitted along the wall toward the top end, since the light spot corresponding to the far axis end 111 is off the optical axis 130, i.e., the image corresponding to the far axis end 111 is off the optical axis; due to the previous analysis: the second focal plane 142 corresponding to the far axial end 111 is closer to the focusing mirror 130 than the first focal plane 141 corresponding to the near axial end 112, the light spot corresponding to the near axial end 112 presents an expanded state due to defocusing, as shown by the fourth light spot 621 in fig. 6, the light spot corresponding to the near axial end 112 does not present an expanded state on the focal plane, then the light spot corresponding to the near axial end 112 is part of the light ray which is firstly irradiated on the wall surface, and as shown by the third light ray 622 of the dotted line part in fig. 6, the light ray which is projected on the wall surface by the light spot corresponding to the near axial end 112 is shown, that is, the wall surface at the bottom of the building 20 is illuminated; then we analyze the spot corresponding to the far axis 111 again: since the far-axis end 111 of the light source body 110 is farther from the wall surface than the near-axis end 112, since the light spot corresponding to the far-axis end 111 is smaller in focusing shape at first and cannot extend to the wall surface at the bottom of the building, but as the light spot further extends, as shown in a fifth light spot 611 of fig. 6, the light spot corresponding to the far-axis end 111 is enlarged and dispersed due to defocusing, since the light source body 110 has a size, the closer the light source body 110 is to the focusing mirror, the smaller an image formed by the light source body 110 through the focusing mirror 120 is, conversely, the farther the light source body 110 is from the focusing mirror 120, the larger the image is, so the light spot is enlarged gradually, the light spot corresponding to the far-axis end 111 is enlarged, as shown in a sixth light spot 612 of fig. 6, the light spot corresponding to the far-axis end 111 is enlarged after being dispersed, and a fourth light ray 613 in a dotted line indicates that the light spot corresponding to the far-axis end 111 is enlarged, the light projected on the wall is projected to the wall surface extending to the upper part or the top of the building, so that the upper part or the top of the building is illuminated, light spots corresponding to the light emitting area between the near shaft end 112 and the far shaft end 111 of the light source body 110 are enlarged from bottom to top along the wall surface of the building, so that the middle area 210 is illuminated, and the focal planes of the light spots are sequentially and continuously arranged from bottom to top along the wall surface of the building, and correspondingly, the illuminated area on the wall surface is formed by continuously accumulating a plurality of light spots with the same or similar energy, so that the illuminance of the light spots projected on the wall surface of the building 20 cannot be attenuated along with the distance from the light source body, and the problem that the brightness of the near lamp end and the brightness of the far lamp end are obviously different when the existing lamp illuminates the building is solved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (8)
1. An optical device for illuminating a facade of a target, the device being located at a bottom end of the facade of the target and proximate to the facade, comprising: a light source body and a focusing mirror;
the light source body is arranged on the incident surface side of the focusing mirror, extends along a direction which is not parallel to the optical axis of the focusing mirror, and extends towards a direction close to or far away from the incident surface of the focusing mirror; the illumination brightness of each luminous point of the light source body is consistent;
the light source body extends towards the direction close to the incident surface, so that the bottom end of the light source body is illuminated by the light spot corresponding to the far shaft end of the light source body, and the top end of the light source body is illuminated by the light spot corresponding to the near shaft end of the light source body correspondingly; a first focal plane corresponding to the proximal shaft end is located at the bottom end, and a second focal plane corresponding to the distal shaft end is located at the top end;
the light source body extends towards the direction far away from the incident surface, so that the bottom end is illuminated by the light spot corresponding to the near shaft end of the light source body, and the top end is illuminated by the light spot corresponding to the far shaft end of the light source body correspondingly; and the first focal plane corresponding to the proximal shaft end is positioned at the top end, and the second focal plane corresponding to the distal shaft end is positioned at the bottom end.
2. The optical device according to claim 1, wherein the projection of the light source body from any direction falls on the same side of the optical axis of the focusing mirror.
3. The optical device as claimed in claim 1, wherein the light source body is in a strip shape, and the light emitting points on the light source body are uniformly arranged.
4. The optical device as claimed in claim 1, wherein the light source body is provided with a plurality of light emitting points having different light colors.
5. The optical device of claim 1, wherein the focusing mirror is a fresnel condensing lens.
6. The optical device according to claim 1, further comprising a protective case for protecting the light source body and the focusing mirror, both of which are disposed on the protective case.
7. An optical system comprising a plurality of optical devices according to any one of claims 1 to 6; the optical devices are arranged at the bottom of the target body side by side and used for irradiating corresponding to-be-irradiated areas on the target body from the bottom.
8. An optical curtain wall projection system comprising a light source control system, an image decoding system and a plurality of optical devices as claimed in claim 4;
the image decoding system is electrically connected with the light source control system;
the optical devices are arranged at the bottom of the target body side by side and used for irradiating corresponding to-be-irradiated areas on the target body from the bottom.
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