Natural light homogenization device with lens and freeform lens combination single piece sinusoidal arrangement

Abstract

The natural light homogenization device of lens and free-form lens combination single piece sinusoidal arrangement relates to a natural light homogenization device.The present application is to solve the problem that the traditional lighting curtain cannot guarantee that the natural light of each lighting stage can be uniformly scattered into the room, and it is difficult to form all-weather homogenization irradiation effect.The present application comprises a plurality of thin light sheets, the outer side of the thin light sheet is composed of a continuous lens array, the inner side of the thin light sheet is composed of a continuous free-form lens array, and the lower surface of each sawtooth of the continuous free-form lens array is a convex surface, a plurality of thin light sheets are arranged in a matrix to form a light matrix, and each row of thin light sheets of the light matrix is numbered from left to right as the first thin light sheet, the second thin light sheet, the third thin light sheet, the fourth thin light sheet, the fifth thin light sheet, the sixth thin light sheet, the seventh thin light sheet, the eighth thin light sheet, the ninth thin light sheet and the tenth thin light sheet.The present application belongs to the field of optical technology.

Description

TECHNICAL FIELD

[0001] The present application relates to a natural light homogenization device, belonging to the field of optical technology. BACKGROUND

[0002] The green energy concept of natural light illumination is gradually entering the public view, and with the deepening of the research on solar lighting technology, people have a deeper understanding of natural light collection and illumination system. The intensity and angle of direct sunlight in a day are different at different times of the day, and people can divide the changes of the whole day's direct sunlight into three illumination stages according to the different angles between the sun and the ground.

[0003] 1. Morning and evening sunlight: when the sun rises from the eastern horizon and the sun sets below the horizon, the angle between the sun and the ground is 0°-15°.

[0004] 2. Morning and afternoon sunlight: the angle between the morning and afternoon sunlight and the ground is between 15° and 60°, usually referring to the light at 8 o'clock in the morning to 11 o'clock in the morning, and 2 o'clock in the afternoon to 5 o'clock in the afternoon, the illumination intensity is relatively stable.

[0005] 3. Midday sunlight: also known as top light, which shines vertically from top to bottom. The illumination angle of the midday sunlight is often affected by the season, and the midday sunlight in summer basically shines vertically downward at 90°, and the projection of the ground scene is very small, while in other seasons, the sunlight shines from top to bottom at an approximate vertical angle, and in winter, the angle of illumination will be more biased.

[0006] The angles of natural light entering the room in the above three illumination stages are different, and the traditional daylighting curtain cannot guarantee that the natural light in each illumination stage can be uniformly scattered into the room, and it is difficult to form a full-time homogenization illumination effect. SUMMARY

[0007] To solve the problem that the traditional daylighting curtain cannot guarantee that the natural light in each illumination stage can be uniformly scattered into the room, and it is difficult to form a full-time homogenization illumination effect, a natural light homogenization device with a single lens and a free-form lens combination is proposed.

[0008] The present application adopts the technical scheme to solve the above problems, and comprises a plurality of thin light sheets, the outer side of the thin light sheet is composed of a continuous lens array, the inner side of the thin light sheet is composed of a continuous free-form surface lens array, the lower surface of each sawtooth of the continuous free-form surface lens array is a convex surface, the plurality of thin light sheets are arranged in a matrix to form a light collecting matrix, and each row of thin light sheets of the light collecting matrix is numbered from left to right as a first thin light sheet, a second thin light sheet, a third thin light sheet, a fourth thin light sheet, a fifth thin light sheet, a sixth thin light sheet, a seventh thin light sheet, an eighth thin light sheet, a ninth thin light sheet and a tenth thin light sheet.

[0009] The angle between the straight line side of the continuous free-form surface lens array of the first thin light sheet and the horizontal plane is 50°,

[0010] The angle between the straight line side of the continuous free-form surface lens array of the second thin light sheet and the horizontal plane is 30°,

[0011] The angle between the straight line side of the continuous free-form surface lens array of the third thin light sheet and the horizontal plane is 20°,

[0012] The angle between the straight line side of the continuous free-form surface lens array of the fourth thin light sheet and the horizontal plane is 10°,

[0013] The angle between the straight line side of the continuous free-form surface lens array of the fifth thin light sheet and the horizontal plane is 5°,

[0014] The angle between the straight line side of the continuous free-form surface lens array of the sixth thin light sheet and the horizontal plane is 175°,

[0015] The angle between the straight line side of the continuous free-form surface lens array of the seventh thin light sheet and the horizontal plane is 170°,

[0016] The angle between the straight line side of the continuous free-form surface lens array of the eighth thin light sheet and the horizontal plane is 160°,

[0017] The angle between the straight line side of the continuous free-form surface lens array of the ninth thin light sheet and the horizontal plane is 150°,

[0018] The angle between the straight line side of the continuous free-form surface lens array of the tenth thin light sheet and the horizontal plane is 130°.

[0019] Further, the continuous lens array refers to a continuous convex lens array.

[0020] Further, the expression of the thickness z2 of the convex lens at different positions x2, y2 of the continuous convex lens array is r2 is the convex lens surface radius, and the surface radius is 1-5 times the minimum distance between the convex lens and the free-form surface.

[0021] Further, the continuous convex lens array adds phase modulation to incident light is expressed as x5, y5 is the position of the lens array incident wave front, lambda is the central wavelength of the incident light, f1 is the focal length of the lens.

[0022] Further, the continuous lens array refers to a continuous convex free-form surface array.

[0023] Further, the convex free-form surface of the continuous convex free-form surface array refracts light in the horizontal direction by refraction, and the expression of the thickness d1 of the convex free-form surface at different positions x3, y3 on the convex free-form surface is Where n is the refractive index, r3 is the curvature radius of the vertex of the convex free-form surface, theta1 is the face type inclination angle of the convex free-form surface, and the light is propagated in the horizontal direction by refraction.

[0024] Further, the continuous convex free-form surface array adds phase modulation to incident natural light is expressed as x6, y6 is the position of the free-form surface array incident wave front, f2 represents the equivalent focal length of the free-form surface, and theta3 is the incident angle of the incident light on the free-form surface.

[0025] Further, the continuous free-form surface lens array adds phase modulation to incident natural light is expressed as y4 is the position of the sawtooth surface array incident wave front, and theta is the incident angle of the natural light on the sawtooth surface.

[0026] Further, the lens of the continuous lens array corresponds to the sawtooth of the continuous free-form surface lens array one by one, and the center position of the surface of each sawtooth matches the optical axis of the lens.

[0027] Further, the thin light sheet is made of a transparent material with a transmittance greater than 85%.

[0028] The beneficial effects of the present application are:

[0029] 1. The present application can absorb natural light in each lighting stage outdoors, and uniformly scatter the natural light to every corner of the indoor, forming a dead angle-free uniform illumination;

[0030] 2. The present application is not limited by the illumination angle of outdoor natural light, and can completely collect natural light at each time period and different incident angles, and uniformly scatter it to the indoor, forming a uniform illumination of natural light, and realizing the full utilization of green energy;

[0031] 3. The present application can also replace the traditional window curtain, light curtain, window and other privacy protection indoors, prevent outdoor from peeping into the indoor;

[0032] 4、The whole weight is light, and batch production is easy by adopting the light weight design concept of the present application;

[0033] 5、The present application can efficiently collect natural light incident into the window, evenly disperse the light to each direction in the room, homogenize indoor illumination, effectively protect indoor privacy, and is light, thin, easy to mass-produce, environmentally friendly and pollution-free. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is a front structure schematic diagram of the present application;

[0035] Figure 2 is a side view of the thin light sheet when the outer side of the thin light sheet is a continuous convex lens array;

[0036] Figure 3 is a side view of the thin light sheet when the outer side of the thin light sheet is a continuous convex free-form surface array;

[0037] Figure 4 is a schematic diagram of the inner side of the first thin light sheet;

[0038] Figure 5 is a schematic diagram of the inner side of the second thin light sheet;

[0039] Figure 6 is a schematic diagram of the inner side of the third thin light sheet;

[0040] Figure 7 is a schematic diagram of the inner side of the fourth thin light sheet;

[0041] Figure 8 is a schematic diagram of the inner side of the fifth thin light sheet;

[0042] Figure 9 is a schematic diagram of the inner side of the sixth thin light sheet;

[0043] Figure 10 is a schematic diagram of the inner side of the seventh thin light sheet;

[0044] Figure 11 is a schematic diagram of the inner side of the eighth thin light sheet;

[0045] Figure 12 is a schematic diagram of the inner side of the ninth thin light sheet;

[0046] Figure 13 is a schematic diagram of the inner side of the tenth thin light sheet DETAILED DESCRIPTION

[0047] Detailed implementation one: combined Figures 1 to 13The natural light homogenization device of the present embodiment is composed of a plurality of thin light sheets 1, the outer side of the thin light sheet 1 is composed of a continuous lens array 101, the inner side of the thin light sheet 1 is composed of a continuous free-form lens array 102, the lower surface of each sawtooth of the continuous free-form lens array 102 is a convex surface 103, and the plurality of thin light sheets 1 are arranged in a matrix to form a light collection matrix, each row of thin light sheets of the light collection matrix is sequentially numbered from left to right as the first thin light sheet, the second thin light sheet, the third thin light sheet, the fourth thin light sheet, the fifth thin light sheet, the sixth thin light sheet, the seventh thin light sheet, the eighth thin light sheet, the ninth thin light sheet, and the tenth thin light sheet;

[0048] The angle β1 between the straight edge of the continuous free-form lens array 102 of the first thin light sheet and the horizontal plane is 50°,

[0049] The angle β2 between the straight edge of the continuous free-form lens array 102 of the second thin light sheet and the horizontal plane is 30°,

[0050] The angle β3 between the straight edge of the continuous free-form lens array 102 of the third thin light sheet and the horizontal plane is 20°,

[0051] The angle β4 between the straight edge of the continuous free-form lens array 102 of the fourth thin light sheet and the horizontal plane is 10°,

[0052] The angle β5 between the straight edge of the continuous free-form lens array 102 of the fifth thin light sheet and the horizontal plane is 5°,

[0053] The angle β6 between the straight edge of the continuous free-form lens array 102 of the sixth thin light sheet and the horizontal plane is 175°,

[0054] The angle β7 between the straight edge of the continuous free-form lens array 102 of the seventh thin light sheet and the horizontal plane is 170°,

[0055] The angle β8 between the straight edge of the continuous free-form lens array 102 of the eighth thin light sheet and the horizontal plane is 160°,

[0056] The angle β9 between the straight edge of the continuous free-form lens array 102 of the ninth thin light sheet and the horizontal plane is 150°,

[0057] The angle β10 between the straight edge of the continuous free-form lens array 102 of the tenth thin light sheet and the horizontal plane is 130°.

[0058] Specific embodiment two: combined Figures 1 to 13In this embodiment, the continuous lens array 101 of the natural light homogenization device with single piece sinusoidal arrangement of lenses and freeform lenses refers to a continuous convex lens array. Other components and connection relationships are the same as in the first embodiment.

[0059] Embodiment three: combination Figures 1 to 13 In this embodiment, the thickness z2 of the convex lens at different positions x2, y2 of the continuous convex lens array of the natural light homogenization device with single piece sinusoidal arrangement of lenses and freeform lenses is expressed as r2 is the radius of the convex lens curve, and the curve radius is 1-5 times the minimum distance between the convex lens and the freeform surface. Other components and connection relationships are the same as in the second embodiment.

[0060] Embodiment four: combination Figures 1 to 13 In this embodiment, the additional phase modulation of the continuous convex lens array of the natural light homogenization device with single piece sinusoidal arrangement of lenses and freeform lenses to the incident light is which is expressed as x5, y5 is the position of the incident wave of the lens array, λ is the central wavelength of the incident light, and f1 is the focal length of the lens. Other components and connection relationships are the same as in the second embodiment.

[0061] Embodiment five: combination Figures 1 to 13 In this embodiment, the continuous lens array 101 of the natural light homogenization device with single piece sinusoidal arrangement of lenses and freeform lenses refers to a continuous convex freeform lens array. Other components and connection relationships are the same as in the first embodiment.

[0062] Embodiment six: combination Figures 1 to 13 In this embodiment, the convex freeform surface of the continuous convex freeform lens array of the natural light homogenization device with single piece sinusoidal arrangement of lenses and freeform lenses refracts light in the horizontal direction by refraction, and the thickness d1 of the convex freeform surface at different positions x3, y3 is expressed as where n is the refractive index, r3 is the radius of curvature of the convex freeform surface, θ1 is the surface type angle of the convex freeform surface, and the light propagates in the horizontal direction by refraction. Other components and connection relationships are the same as in the fifth embodiment.

[0063] Embodiment seven: combination Figures 1 to 13 In this embodiment, the additional phase modulation of the continuous convex freeform lens array of the natural light homogenization device with single piece sinusoidal arrangement of lenses and freeform lenses to the incident natural light is which is expressed as x6, y6 is the position of the free-form surface array incident wavefront, f2 represents the free-form surface equivalent focal length, and θ3 is the incident angle of the incident light on the free-form surface. The other components and connection relationships are the same as those in Embodiment V.

[0064] Embodiment VIII: Combination Figures 1 to 13 In this embodiment, the continuous free-form lens array 102 of the lens and free-form lens combined single-sinusoidal arrangement natural light homogenization device described in this embodiment adds phase modulation to the incident natural light is represented as y4 is the position of the sawtooth surface array incident wavefront, and θ is the incident angle of the natural light on the sawtooth surface. The other components and connection relationships are the same as those in Embodiment I.

[0065] Embodiment IX: Combination Figures 1 to 13 In this embodiment, the lens of the continuous lens array 101 of the lens and free-form lens combined single-sinusoidal arrangement natural light homogenization device described in this embodiment is in one-to-one correspondence with the sawtooth of the continuous free-form lens array 102, and the center position of the surface of each sawtooth matches the optical axis of the lens. The other components and connection relationships are the same as those in Embodiment I.

[0066] Embodiment X: Combination Figures 1 to 13 In this embodiment, the thin light sheet 1 of the lens and free-form lens combined single-sinusoidal arrangement natural light homogenization device described in this embodiment is made of a transparent material with a transmittance greater than 85%. The other components and connection relationships are the same as those in Embodiment I.

[0067] Working principle

[0068] The continuous lens array 101 is used to collect outdoor natural light and conduct it to the continuous free-form lens array 102 through the intermediate medium of the same material on both sides; the continuous free-form lens array 102 is used to deflect the incident natural light to the indoor space after refraction through the inclined surface.

[0069] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the above disclosed technical content without departing from the scope of the technical solution of the present application, and any simple modification, equivalent replacement and improvement of the above embodiments within the scope of the technical solution of the present application, the technical essence of the present application, and the spirit and principles of the present application, are all within the protection scope of the present application.

Claims

1. A natural light homogenizing device with a single-piece sinusoidal arrangement, consisting of a combination of a lens and a freeform surface lens, characterized in that: The natural light homogenizing device, which combines a lens and a freeform lens in a single-piece sinusoidal arrangement, includes several thin light plates (1). The outer surface of the thin light plate (1) is composed of a continuous lens array (101), and the inner surface of the thin light plate (1) is composed of a continuous freeform lens array (102). The lower surface of each sawtooth of the continuous freeform lens array (102) is a convex curved surface (103). The several thin light plates (1) are arranged in a matrix to form a light-collecting matrix. Each row of thin light plates in the light-collecting matrix is ​​numbered from left to right as the first thin light plate, the second thin light plate, the third thin light plate, the fourth thin light plate, the fifth thin light plate, the sixth thin light plate, the seventh thin light plate, the eighth thin light plate, the ninth thin light plate, and the tenth thin light plate. The angle (β1) between the straight edge of the first thin plate's continuous freeform lens array (102) and the horizontal plane is 50°. The angle (β2) between the straight edge of the second thin film's continuous freeform lens array (102) and the horizontal plane is 30°. The angle (β3) between the straight edge of the third thin plate's continuous freeform lens array (102) and the horizontal plane is 20°. The angle (β4) between the straight edge of the fourth thin plate's continuous freeform lens array (102) and the horizontal plane is 10°. The angle (β5) between the straight edge of the fifth thin plate's continuous freeform lens array (102) and the horizontal plane is 5°. The angle (β6) between the straight edge of the sixth thin plate's continuous freeform lens array (102) and the horizontal plane is 175°. The angle (β7) between the straight edge of the seventh thin plate's continuous freeform lens array (102) and the horizontal plane is 170°. The angle (β8) between the straight edge of the eighth thin plate's continuous freeform lens array (102) and the horizontal plane is 160°. The angle (β9) between the straight edge of the continuous freeform lens array (102) of the ninth thin plate and the horizontal plane is 150°. The angle (β10) between the straight edge of the tenth thin plate's continuous freeform surface lens array (102) and the horizontal plane is 130°.

2. The natural light homogenizing device of single-piece sinusoidal arrangement combining lens and freeform surface lens according to claim 1, characterized in that: The continuous lens array (101) refers to a continuous convex lens array.

3. The natural light homogenizing device of single-piece sinusoidal arrangement combining lens and freeform surface lens according to claim 2, characterized in that: Different positions on the convex lenses of the continuous convex lens array , thickness The expression is , The radius of the convex lens surface is 1-5 times the minimum distance between the convex lens and the freeform surface.

4. The natural light homogenizing device of single-piece sinusoidal arrangement combining lens and freeform surface lens according to claim 2, characterized in that: The phase modulation added to the incident light by the continuous array of convex lenses Represented as , , Let λ be the position of the incident wavefront of the lens array, and λ be the center wavelength of the incident light. This is the focal length of the lens.

5. The natural light homogenizing device of single-piece sinusoidal arrangement combining lens and freeform surface lens according to claim 1, characterized in that: The continuous lens array (101) refers to a continuous array of convex freeform surfaces.

6. The natural light homogenizing device of single-piece sinusoidal arrangement combining lens and freeform surface lens according to claim 5, characterized in that: The continuous array of convex freeform surfaces refracts light in the horizontal direction through refraction. Different positions on the convex freeform surfaces... , thickness The expression is Where n is the refractive index, Let be the radius of curvature of the vertex of the convex freeform surface. The angle of inclination of the convex freeform surface causes light to propagate horizontally through refraction.

7. The natural light homogenizing device of single-piece sinusoidal arrangement combining lens and freeform surface lens according to claim 5, characterized in that: The phase modulation added to the incident natural light by the continuous array of convex freeform surfaces Represented as , , The position of the incident wavefront of the freeform surface array. Indicates the equivalent focal length of the freeform surface. Let be the incident angle of the incident light on the freeform surface.

8. The natural light homogenizing device of single-piece sinusoidal arrangement combining lens and freeform surface lens according to claim 1, characterized in that: The continuous freeform surface lens array (102) adds phase modulation to the incident natural light. Represented as , Let θ be the position of the incident wavefront of the sawtooth surface array, and θ be the incident angle of natural light on the sawtooth surface.

9. The natural light homogenizing device of single-piece sinusoidal arrangement combining lens and freeform surface lens according to claim 1, characterized in that: The lenses of the continuous lens array (101) correspond one-to-one with the sawtooth of the continuous freeform surface lens array (102), and the center position of the surface of each sawtooth matches the optical axis of the lens.

10. The natural light homogenizing device of a single-piece sinusoidal arrangement combining a lens and a freeform surface lens according to claim 1, characterized in that: The thin sheet (1) is made of a transparent material with a transmittance greater than 85%.

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