CN211976648U - Light source system for simulating starry sky background illumination - Google Patents
Light source system for simulating starry sky background illumination Download PDFInfo
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- CN211976648U CN211976648U CN202020722565.1U CN202020722565U CN211976648U CN 211976648 U CN211976648 U CN 211976648U CN 202020722565 U CN202020722565 U CN 202020722565U CN 211976648 U CN211976648 U CN 211976648U
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Abstract
The utility model discloses a light source system of simulation starry sky background lighting relates to the illumination field. The system mainly comprises a light absorption plate, a fixing plate, an optical fiber, a star light generator, a light reflection plate and a star light chamber. The light absorption plate is provided with the optical fibers with different diameters, so that stars such as stars with different sizes and the like can be simulated, and starry sky scenes at clear night can be presented in an indoor environment; meanwhile, the brightness of the night sky stars under different weather conditions can be simulated by matching with the PWM control circuit of the optical filter and the star light generator, so that the effect of simulating real starlight illumination is achieved; furthermore, different constellations in the night sky can be simulated according to needs, and the space simulation device is attractive and has a popular science effect.
Description
Technical Field
The utility model relates to the field of lighting technology, especially, relate to a light source system of simulation starry sky background lighting. The starry sky background illumination comprises starry sky cloud picture distribution and a starry sky illumination environment. The utility model discloses be applied to and throw light on in the indoor airtight environment in similar house, can simulate out real night sky starlight illuminating effect indoor.
Background
At present, the design of bionic elements is widely applied in the fields of medicine and building, ecology is a method for collecting, describing and recording natural phenomena, and the bionic design is to show the elements of ecological natural environment through various sensory forms such as instruments, equipment, images, sounds, touch feeling and the like by a high and new technology, so that a user can directly or indirectly experience the natural ecological environment under the condition that the ecological environment cannot appear. In medicine, the patient can experience the natural environment in a sickbed or a ward by providing illumination and images of the bionic environment, and the rehabilitation probability and speed of the patient can be promoted by improving the mood of the patient and adjusting the body hormone secretion and metabolism of the patient; to medical personnel, being in indoor closed environment for a long time can greatly influence medical personnel's physical and mental health, and then influence work, through imitative ecological technology, for medical personnel create ecological environment's work sight and atmosphere, can effectively improve medical personnel's work efficiency and operating mass with rated load. However, the existing partial living environment is limited by external factors, so that it is difficult for a resident to feel natural ecological environment, such as sunlight in the daytime, starry sky at night, and the like, which makes a lighting system capable of simulating the natural environment widely favored.
There are three main requirements for lighting in the architectural field: 1. functional requirements, i.e. to meet the most basic lighting requirements; 2. decorative requirements, requirements for aesthetics; 3. physical and mental health requirements. The physiological health requirement and the psychological health requirement are met, and a real natural sky environment needs to be simulated firstly.
SUMMERY OF THE UTILITY MODEL
To present social demand, the utility model provides a light source system of simulation starry sky background lighting. The lighting system is applied to lighting in a closed environment similar to the indoor environment of a house, and can present starry sky scenes at clear night indoors.
In order to facilitate the detailed interpretation of the present invention, in the description of the present invention, it is necessary to explain the terms:
"Star, etc" is an astronomically representation of the brightness of stars, and popular saying is the grade of stars. The light and shade of the stars are uniformly expressed by stars and the like, and the smaller the number of stars and the brighter the stars are.
2. Stars and the like
The direct star equivalent distance from the celestial body by the celestial photometric measurement is called visual star, which reflects the brightness of the celestial body. A very bright star can appear very dark due to the long distance (star-like values are large); while a star that is actually dark may appear very bright (small star-like values) due to the close proximity. For a point light source, the illumination of the celestial body on the earth is represented. Stars and the like are often denoted by m. The monochromatic star aberrations measured for a single wavelength are independent of the characteristics of the radiation detector. The star equi-differences measured in a certain wavelength band, however, vary with the selectivity of the detector. Therefore, there are various star systems corresponding to different detectors. For example:
"eye stars, etc." mv"is the star measured by the human eye, etc. Astronomical desk of Harvard university in USA stipulates m of lambada star of little bear seatvAnd +6.55, etc., to determine the zero point of the visual star, etc. For example, the sun's eye stars, etc. are-26.74, etc.; the visual star of Tianlang star is-1.6, etc. 1 star is seen visually, and the illuminance on the ground is approximately equal to 8.3 multiplied by 10-9Lux.
b. "photographic starM is equalp"is measured using blue sensitive photographic negative film. International star of photography, etc. IpgThe zero point of (a) is defined as: make the visual star equal to between 5.5 and 6.50Average of type I starspgIs mv。
c. "starry sight imitation mpvInternational imitative sight star, etc. Ipv"is measured using a positive negative plus a yellow filter. Its spectral characteristics are similar to those of human eyes, and it can be used to replace visual star.
"Absolute Star" or the like is used for comparison of the luminous intensity of celestial bodies.
Calculation of absolute stars, etc.:
m is defined as the apparent star or the like obtained by placing celestial bodies at a distance of 10 seconds. If the parallax pi (in arc seconds) of the celestial body and the sight star m corrected by interstellar extinction are known, the absolute star m can be calculated according to the following formula:
M＝m+5(1+log10π)
if the distance d of the celestial body and the apparent star m are known, the absolute star can be calculated according to the following formula:
wherein d is0Is 10 seconds difference, 32.616 light years.
There are different absolute stars and the like corresponding to the visual stars and the like of different systems.
If the absolute star, etc. and the parallax pi, or the distance d of the celestial body are known, the visual star, etc. can be calculated according to the following formula:
The pusen formula: for calculating the relationship between stars, etc. and the light emission luminance
Star, etc. connecting two celestial bodies1、m2And their brightness E1、E2. The definition of the star-scale has been used up to now. The zero point of the star scale is determined by specifying the star value of a certain star.
"photosites et al" define the spectral composition of a celestial body by radiometric measurements of the wavelength band in which the celestial body emits light. The color of the visible stars is different for the observer due to the different radiation spectrum of the celestial bodies. UBV systems involve radiometric measurements of celestial bodies in three wavelength bands, traditionally achieved by placing standard filter stars and the like in front of the detection system: u: the wavelength is about 360nm, and near ultraviolet components are measured to obtain ultraviolet stars and the like. B: the Blue component was measured at a wavelength of about 440nm, and the result was Blue stars and the like (Blue and the like, English Blue). V: the wavelength is about 550nm, and the yellow and green components are measured to be close to the brightness seen by human eyes, and visible stars and the like are obtained. In the astronomical literature, a star and the like not specifically described is a visible star and the like in general.
The utility model provides a light source system of simulation starry sky background lighting, include: the device comprises a light absorption plate, a fixed plate, an optical fiber, a star light generator, a light reflection plate and a star light chamber;
the light absorption plate is connected with the fixed plate, the light absorption plate is positioned above the fixed plate, and an accommodating cavity is formed between the light absorption plate and the fixed plate;
the light absorption plate is made of a material with a spongy structure, a light transmission window and a fixing hole are formed in the light absorption plate, the light transmission window penetrates through the light absorption plate and the fixing plate, and the fixing hole is used for fixing the optical fiber;
the light-emitting end face of the optical fiber is fixed on the light absorption plate, and the light-entering end face of the optical fiber is fixed on the star light generator;
the star light generator is arranged in the accommodating cavity and is used for emitting light of different photoelectric stars and the like, namely light with different wavelengths; the light emitted by the star light generator is transmitted to the upper surface of the light absorption plate through the optical fiber to form a star point light source;
the light reflecting plate is connected with the light absorbing plate, the light reflecting plate is positioned above the light absorbing plate, and a star light chamber is formed between the light reflecting plate and the light absorbing plate;
the reflector comprises a light splitting layer, a blue filter layer and a diffuse reflection layer which are sequentially stacked; the light splitting layer is used for partially reflecting and partially transmitting light incident on the light splitting layer.
Further, the optical fiber includes a plurality of optical fibers having different diameters for simulating a plurality of stars having different stars and the like.
Further, the diameter d of the optical fiber (3) is obtained by:
1) determining the star-to-star m of the simulated stars1；
2) Calculating the radiance E of the simulated stars according to the Pusen equation (1)1；
Wherein m is2H26.7, star of the sun, E2＝1.865×109cd/m2The brightness of the sun on the ground;
3) from the radiance E calculated in step 2)1Calculating the luminous flux P output by the optical fiber 3 by using the calculation formula 2 of the brightness and the luminous fluxc；
Pc＝Ω×E1×L2 (2)
Wherein Ω is an aperture angle of the optical fiber (3) and is a known quantity; l ═ L1+L2，L1Is the distance L between the light-emitting surface of the optical fiber (3) and the reflector (2)2The distance between the human eyes and the reflector (2);
4) the luminous flux P calculated according to the step 3)cCalculating the diameter d of the optical fiber by using relational expressions (3) and (4) of the luminous flux and the diameter;
As＝Pc/(Ed×τ) (3)
As＝πd2/4 (4)
wherein A issIs the cross-sectional area of the optical fiber (3), EdIs an illuminance value of the star light generator (4) on the cross section of the optical fiber (3) and can be obtained through measurement; τ is the transmittance of the optical fiber (3) and is a constant.
Further, the light source system further comprises a PWM control circuit for controlling the current of the light source in the star light generator (4).
Furthermore, a movable optical filter is arranged between the star light generator and the optical fiber.
Further, the reflectance of the light splitting layer is: the transmittance is 8-5: 2-5.
In an implementation scheme, the light splitting layer is a semi-transparent and semi-reflective layer.
The light source system for simulating starry sky background illumination provided by the utility model simulates stars of different sizes, stars and the like by arranging the optical fibers with different diameters, and can present starry sky scenes at clear night in an indoor environment; meanwhile, the brightness of the star in the air at night under different weather conditions (with or without clouds) can be simulated by matching with the PWM control circuit of the optical filter and the star light generator, so that the effect of simulating real starlight illumination is achieved; furthermore, different constellations in the night sky can be simulated according to needs, and the space simulation device is attractive and has a popular science effect.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an illumination system according to an embodiment of the present invention;
FIG. 2 is a schematic view of a reflector according to an embodiment of the present invention
FIG. 3 is a distribution diagram of the main stars and stars of the Scorpio according to the embodiment of the present invention;
fig. 4 is a schematic diagram of an optical fiber guided starlight structure according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating an exemplary visual distribution of hunter base according to an embodiment of the present invention;
wherein: 1-a star light chamber, 2-a light reflecting plate, 3-an optical fiber, 4-a star light generator, 5-a light transmitting window, 6-a sealed chamber, 7-a light absorbing plate, 8-a light filter, 9-a fixing plate, 10-a containing cavity, an a-a light splitting layer, a B-a blue filter layer, a C-a diffuse reflection layer, an A-light emitting surface, a B-an image of an optical fiber and C-human eyes.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with at least one implementation of the invention is included. In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. For the convenience of the detailed explanation of the present invention, in the description of the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "dome", "edge", "inner", "outer", etc. to be understood indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and the terms "diffuse reflection light", "specular reflection light", "direct light", "transmission light", "scattered light", "starlight", "sky background light", "color temperature", "gradual change", "divergence angle", "illuminance", "radiance", "lightness", "luminous flux", etc. are used to describe the light or the illumination. Also, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein.
Example 1
As shown in fig. 1, fig. 1 is a schematic structural diagram of a light source system for simulating starry sky background illumination according to the present invention, the light source system is used for irradiating a simulated starlight into a closed chamber 6, and the light absorbing plate 7, the fixing plate 9, the optical fiber 3, the star light generator 4, the light reflecting plate 2, and the starlight chamber 1;
the light absorption plate 7 is connected with the fixing plate 9, the light absorption plate 7 is positioned above the fixing plate 9, and an accommodating cavity 10 is formed between the light absorption plate 7 and the fixing plate 9;
the light absorption plate 7 is made of a material with a spongy structure, a light transmission window 5 and a fixing hole are formed in the light absorption plate 7, the light transmission window 5 penetrates through the light absorption plate 7 and the fixing plate 9, and the fixing hole is used for fixing the optical fiber 3;
the light-emitting end face of the optical fiber 3 is fixed on the light absorption plate 7, and the light-entering end face of the optical fiber 3 is fixed on the star light generator 4;
the star light generator 4 is arranged in the accommodating cavity 10, the star light generator 4 is used for emitting light of different photoelectric stars and the like, namely light with different wavelengths, and the light emitted by the star light generator 4 is transmitted to the upper surface of the light absorption plate 7 through the optical fiber 3 to form a star point light source;
the reflector 2 is connected with the light absorption plate 7, the reflector 2 is positioned above the light absorption plate 7, and a star light chamber 1 is formed between the reflector 2 and the light absorption plate 7;
the reflector 2 comprises a light splitting layer a, a blue filter layer b and a diffuse reflection layer c which are sequentially stacked; the light splitting layer a is used for partially reflecting and partially transmitting light incident thereon.
It will be appreciated that the enclosed chamber 5 may be a house and the fixing plate 9 may be mounted on the ceiling of the house for irradiating light into the house through the light-transmitting window 4, i.e. simulated starlight may be irradiated into the enclosed chamber 5 from the light-transmitting window 4.
Further, as shown in fig. 2, fig. 2 shows a schematic structural diagram of a light reflecting plate, where the light reflecting plate 2 includes a light splitting layer a, a blue filter layer b, and a diffuse reflection layer c, which are stacked in sequence, and the light splitting layer a is communicated with the star light chamber. The light splitting layer a is used for partially reflecting and partially transmitting light incident thereon. The ratio of the reflectivity and the transmissivity of the light splitting layer a can be set according to needs, and preferably, the reflectivity of the light splitting layer a is: the transmittance is 8-5: 2-5; more preferably, the light splitting layer a is a semi-transparent semi-reflective layer.
The light emitted by the star light generator 4 is conducted to the upper surface of the light absorption plate 7 through the optical fiber 3 to form a star point light source; when a light beam emitted by the starpoint light source (i) irradiates the light splitting layer (a), part of the light is reflected to form a reflected light beam (ii); the light of the rest part permeates the light splitting layer a, gets into blue filter layer b, forms light beam (c), because blue filter layer b only can permeate the blue light, and the light of other wave bands is all absorbed by blue filter layer b, consequently light beam (c) permeates blue filter layer b forms blue light beam, blue light beam incides on the diffuse reflection layer c by diffuse reflection layer c reflects, forms blue diffuse reflection light (c), blue diffuse reflection light (r) sees through blue filter layer b with light splitting layer a forms diffuse sky light. Because the brightness and the color temperature of the light source are adjusted to the real brightness and the color temperature of the stars in clear night, the blue diffuse reflection light formed on the back side of the reflector is weaker and is blue-black, and is close to the blue-black diffuse reflection light generated after the stars penetrate through the earth atmosphere, so that vivid night sky star light scenes are visually provided for observers. The reflected light beam is emitted from the light-transmitting window 5 and irradiates into the closed chamber 6, and the effect that starlight is emitted into the chamber from the outside is visually presented.
A plurality of optical fibers 3 of different diameters are arranged on the light absorbing plate 7 for simulating stars of different sizes and with different stars and the like.
Fig. 3 shows the distribution diagram of the main stars of the Scorpio, and the present embodiment takes the light source system simulating the distribution of the stars of Scorpio as an example to describe the specific obtaining process of the light source system of the present invention.
Step 1: calculating the radiance E of Scorpio heart I by Possen formula (1)1。
Wherein m is the star of heart-over-two I11, star of sun m 2-26.7, brightness of sun on ground E2＝1.865×109cd/m2The brightness E of the heart-host II on the ground1＝0.0155cd/m2；
Step 2: sequentially calculating tail dormitory five II, tail dormitory eight III, room dormitory two IV, room dormitory three V and the likeRadiance E of visual stars and the like2、E3……En。
And step 3: as shown in fig. 4, the light emitted from the light-emitting surface a of the optical fiber 3 is reflected by the reflector 2, enters the field of view of the observer C, and the luminous flux P output from the optical fiber (3) is calculated by the above-mentioned calculation formula (2) for luminance and luminous flux based on the calculation result of the radiance Ei of the visual star or the likeci；
Pci＝Ω×Ei×L2 (2)
Where i is 1 … … n, and Ω is the aperture angle of the optical fiber 3, which is a known quantity;
the distance L between the output end face of the optical fiber 3 and the human eye C is a design parameter in the present invention, referring to fig. 4, L ═ L1+L2，L1Approximately the distance, L, between the light-emitting surface of the optical fiber 3 and the reflector 22Approximately the distance between the human eye C and the reflector 2;
and 4, step 4: the luminous flux P calculated according to step 3ciThe diameter d of the optical fiber 3 is calculated by using the relational expressions (3) and (4) between the luminous flux and the diameteri；
Asi＝Pci/(Edi×τ) (3)
Asi＝πdi 2/4 (4)
Wherein A issiIs the cross-sectional area of the ith optical fiber 3, EdiThe illumination value of the star light generator 4 on the cross section of the ith optical fiber 3 can be obtained through measurement; τ is the transmittance of the optical fiber 3 and is a constant.
The diameters of the plurality of optical fibers 3 fixed on the light absorption plate 7 are calculated through the steps, so that the light source system capable of simulating the distribution of the fixed stars of the Scorpio can be obtained.
The maximum of the star and the like of the human eyes is 6 stars, the brightest star and the like except the sun is-4.6 (golden star), and the utility model can simulate the stars of 6 to-4.6 stars and the like.
Further, the present embodimentIn one embodiment, the light source system further comprises a PWM control circuit for controlling the current of the light source in the star light generator 4, and thus the power of the light source in the star light generator 4, and finally the illuminance value E generated by the star light generator 4dThe size of (2). The PWM control circuit adopts 10000-step subdivision value control circuit, and can adjust the illumination value E of the star light generator 4d Control output 104And (4) grading.
In this embodiment, a movable optical filter 8 is disposed between the light generator 4 and the optical fiber 3, and the brightness of the night sky star under various weather conditions is simulated by configuring the PWM control circuits of the optical filter 8 and the light generator 4, for example: when the cloud cover is thick in the air at night, the brightness of the stars is low, and at the moment, the brightness of the stars can be reduced by reducing the current of the star light generator 4 and/or using a filter with low light transmittance; at night sky, the brightness of the stars is high, and at the moment, the brightness of the stars can be increased by increasing the current of the star light generator 4 and/or using a filter with high light transmittance.
As shown in fig. 4, the optical fiber light-exiting surface a forms a star point light source with a corresponding star, etc., and the star point light source is reflected by the reflector 2 to form an image B of the star point light source and enters the visual field of the observer C through the light-transmitting window 5. Since the starspot light source enters the visual field of the observer C by the principle of mirror imaging, the distance L between the starspot light source and the observer C is L2+ L1, and the starlight observed by the observer C has a sense of distance.
Example 2
In this embodiment, the UBV spectral composition of the hunter seat and the stars nearby, the brightness of each star, and the calculation process of the star brightness are calculated by measuring photo stars and the like and computer analysis as in embodiment 1. The diameter of each optical fiber was calculated from the brightness of the stars in the same manner as in example 1. According to the calculation result, the device of the embodiment can simulate the distribution of stars and the like in the real hunter seat area, and as shown in fig. 5, a real three-dimensional starry sky scene is presented to the observer.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (5)
1. A light source system for simulating starry sky background illumination is characterized in that: the light source system includes: the device comprises a light absorption plate (7), a fixing plate (9), an optical fiber (3), a star light generator (4), a light reflection plate (2) and a star light chamber (1);
the light absorption plate (7) is connected with the fixed plate (9), the light absorption plate (7) is positioned above the fixed plate (9), and an accommodating cavity (10) is formed between the light absorption plate (7) and the fixed plate (9);
the light absorption plate (7) is made of a material with a spongy structure, a light transmission window (5) and a fixing hole are formed in the light absorption plate (7), the light transmission window (5) penetrates through the light absorption plate (7) and the fixing plate (9), and the fixing hole is used for fixing the optical fiber (3);
the light-emitting end face of the optical fiber (3) is fixed on the light absorption plate (7), and the light-entering end face of the optical fiber (3) is fixed on the star light generator (4);
the star light generator (4) is arranged in the accommodating cavity (10), the star light generator (4) is used for emitting light with different wavelengths, and the light emitted by the star light generator (4) is transmitted to the upper surface of the light absorption plate (7) through the optical fiber (3) to form a star point light source;
the light reflecting plate (2) is connected with the light absorbing plate (7), the light reflecting plate (2) is positioned above the light absorbing plate (7), and a star light chamber (1) is formed between the light reflecting plate (2) and the light absorbing plate (7);
the reflector (2) comprises a light splitting layer (a), a blue filter layer (b) and a diffuse reflection layer (c) which are sequentially stacked; the light splitting layer (a) is used for partially reflecting and partially transmitting light incident thereon.
2. A light source system for simulating starry sky background lighting according to claim 1, wherein: the optical fiber (3) comprises a plurality of optical fibers with different diameters for simulating a plurality of stars with different stars and the like.
3. A light source system for simulating starry sky background lighting according to claim 2, wherein: the light source system further comprises a PWM control circuit for controlling the current of the light source in the star light generator (4).
4. A light source system for simulating starry sky background lighting according to any one of claims 1 to 3, wherein: and a movable optical filter (8) is arranged between the star light generator (4) and the optical fiber (3).
5. The light source system for simulating starry sky background illumination of claim 4, wherein: the light splitting layer (a) is a semi-transparent semi-reflecting layer.
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