EXTREME CUT BEAM CONTROL OPTICS

Abstract

An optical assembly and a luminaire with extreme cutoff beam control optics. The optical assembly includes a base, a plurality of lenses, a plurality of light-emitting diodes (LEDs) positioned to emit light in the lenses, and a reflector having a reflective surface arranged adjacent to at least one of the plurality of LEDs. The optical axis of one or more of the LEDs may be offset from a central axis of the respective lens in which it emits light. The reflective surface of the reflector may extend from the base over one or more of the LEDs and beyond the optical axis of one or more LEDs to direct light in a desired direction or toward a selected area (e.g., a street) and cut off light directed in an undesired direction or area (e.g., a house).

Description

EXTREME CUT BEAM CONTROL OPTICS Cross-reference to Related Applications

[001] This application is a continuation in part of United States Patent Application No. 17 / 686,799, filed on March 4, 2022, and claims the benefit of United States Patent Application No. 63 / 356,130, filed on June 28, 2022, the subject matter of which is incorporated herein by reference in its entirety. Field of Invention

[002] This disclosure generally relates to an optical assembly that can be used in luminaires and other light elements, and more particularly to reflectors around light-emitting diodes (LEDs) to direct beams of light from LEDs in a desired direction while preventing the beams of light from traveling in an undesired direction. Background of the Invention

[003] Light-emitting diodes (LEDs) are typically used in luminaires for street lighting, porch lighting, backyard lighting, house lighting, decorative lighting, or other lighting purposes. LED lights used in roadway luminaires typically include an array of LEDs arranged in rows, with the LEDs covered by optics designed to provide a particular light distribution profile. In outdoor lighting applications, it may be desirable to direct light in a desired direction (such as toward a street, parking lot, or other area) while preventing light from being directed in an undesired direction to avoid leaving other areas, such as unpaved areas, buildings, yards, and the like, unlit.However, traditional lighting systems may not provide the ability to precisely cut off light so that predominantly all the light emitted from the lighting system is directed in a desired direction. Therefore, improvements in the light-cutting capabilities of lighting systems are desirable. Brief Description of the Invention

[004] One aspect of this disclosure relates to an optical assembly configured to direct light in a desired direction. The optical assembly includes a base, a plurality of lenses arranged on the base and spaced apart from each other in a row. Each lens may be dome-shaped with a central or optical axis perpendicular to a plane of the base. The optical assembly may include a plurality of light-emitting diodes (LEDs). Each LED may be positioned between the base and a respective lens of the plurality of lenses. Each LED may have a central axis perpendicular to a plane of the LED. The central axis of an LED may be offset from the central axis of the respective lens of the plurality of lenses. At least one reflector having a curved surface (e.g., concave, parabolic, etc.) is also included.The curved surface may be arranged adjacent to at least one of the plurality of LEDs such that at least one of the plurality of LEDs is located on a first side of the at least one reflector. The curved surface may extend from the base and curve over the at least one of the plurality of LEDs and beyond the centerline of each of the at least one of the plurality of LEDs. The curved surface may be configured to direct the light emitted by the at least one of the plurality of LEDs towards the first side and prevent light from escaping to a second side of the at least one reflector that is opposite the first side. OQQQcn / cznz / a / v

[005] In some embodiments, each lens of the lens plurality defines a cavity, and each LED of the LED plurality can be arranged in a respective of the cavities so that the central axis of the LED is displaced with respect to a central axis of the respective lens in a direction of the curved surface of the at least one reflector.

[006] In some embodiments, the curved surface of the reflector may have a freeform shape characterized by multiple curvatures between endpoints of the curved surface, a first endpoint located at the base and a second endpoint positioned above at least some of the plurality of lenses. For example, a first curvature may be between the first endpoint at the base and an intermediate point between the first and second endpoints, and a second curvature may be between the intermediate point and the second endpoint of the curved surface.

[007] In some embodiments, the curved surface of the reflector can be characterized by a first angle between a base plane and a first line (e.g., joining a distal end of a lens furthest from the curved surface and a distal end of the curved surface located above the lens). For example, the first angle is in the range of 60° to 90°. In some embodiments, the curved surface of the reflector can be characterized by a second angle between the base plane and a second line (e.g., a line joining a point on the lens located on the central axis of the LED and the distal end of the curved surface located above the lens). For example, the second angle is in the range of 70° to 130°.

[008] In addition, an aspect of this disclosure relates to a luminaire. The luminaire includes a base, a plurality of lenses arranged in the base and separated from each other, a plurality of light-emitting diodes (LEDs) arranged between the base and a respective lens of the plurality of lenses, at least one reflector having a curved surface and arranged close to at least one of the plurality of LEDs, and a frame supporting the base and the at least one reflector.

[009] In some modalities, each lens may have a dome shape that has a central axis perpendicular to a base plane.

[0010] In some embodiments, each LED may have a central axis perpendicular to a plane of the LED, and the central axis of an LED may be offset from the central axis of a respective lens of the lens plurality.

[0011] In some embodiments, the curved surface of the reflector may extend from a surface of the base and curve over at least one of the plurality of LEDs and beyond the central axis of at least one of the plurality of LEDs. The curved surface may be configured to direct the light emitted by at least one of the plurality of LEDs toward the first side and prevent light from escaping to a second side of the at least one reflector that is opposite the first side.

[0012] In some embodiments, the frame can be oriented so that the curved surface of at least one reflector curves towards the street to direct the light from at least one of the plurality of LEDs towards one side of the street and prevent light from escaping in a direction away from the street.

[0013] The above general description of illustrative implementations and the following detailed description of them are merely example aspects of the teachings in this disclosure, and are not restrictive. OQQQcn / cznz / a / uιλι Brief Description of the Figures

[0014] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate one or more embodiments and, together with the description, explain these embodiments. The accompanying drawings are not necessarily drawn to scale. Any dimensions or values ​​illustrated in the accompanying graphs and figures are for illustrative purposes only and may or may not represent actual or preferred values ​​or dimensions. Where applicable, some or all features may not be illustrated to aid in the description of the underlying characteristics. In the figures:

[0015] Figure 1 illustrates background light leakage associated with a street light of the above technique.

[0016] Figure 2 illustrates a street light with improved backlight control, according to a modality.

[0017] Figure 3 is a perspective view of an optical assembly that includes a reflector with a curved surface, according to a modality.

[0018] Figure 4A is a top perspective view of a lens or optic arranged on a base surface, according to a modality.

[0019] Figure 4B is a bottom perspective view of the base surface showing access to a lens cavity for mounting a light source, according to one modality.

[0020] Figure 4C is a cross-sectional view of a base-disposed lens showing the magnified light source of the lens cavity, according to a modality.

[0021] Figure 5 is a perspective view of a lens or optic co-molded to a base, according to a modality.

[0022] Figure 6 illustrates a cross-section of an optical assembly, (a) showing a perspective view of an optical assembly and a cross-section, and (b) showing a front view of the cross-section illustrating a cross-section of reflectors, lenses, and light sources, according to a modality.

[0023] Figure 7A is a perspective cross-sectional view of the reflector, lens, and light source arranged in an optical assembly, according to a modality.

[0024] Figure 7B is a perspective view of an optical assembly with a central axis of the light source pointing downwards and a reflector directing light from the light source towards the front, according to a modality.

[0025] Figure 8A is a perspective cross-sectional view of the reflector, lens, and light source arranged in an optical assembly, according to a modality.

[0026] Figure 8B is a cross-sectional view of the lens and light source viewed from one side (e.g., house side) illustrating a symmetrical configuration of the lens with respect to the light source, according to a modality.

[0027] Figure 8C is a cross-sectional view of the lens and light source viewed from a front with a house side on the left and a street side on the right, illustrating the asymmetry of the lens with respect to the light source, according to a modality.

[0028] Figure 9A illustrates a first angle associated with the reflector that characterizes a curved surface, according to a modality. OQQQcn / cznz / a / uιλι

[0029] Figure 9B illustrates a second angle associated with the reflector that characterizes a curved surface, according to a modality.

[0030] Figure 9C illustrates a traditional reflector with a straight surface, according to one modality.

[0031] Figure 10 is a perspective view of a corner reflector mounted on a base with a light source arranged in the lens, according to a modality.

[0032] Figure 11 is a perspective view of an optical assembly with a plurality of corner reflectors mounted on a base with a plurality of light sources arranged in corresponding lenses, according to a modality.

[0033] Figure 12 is a luminaire that employs an optical assembly according to a modality disclosed herein.

[0034] Figure 13 is a perspective view of an optical assembly, according to another modality.

[0035] Figure 14 is a top perspective view of a base and lens assembly of the optical assembly of Figure 13.

[0036] Figure 15 is a bottom perspective view of the base and lens assembly of Figure 14.

[0037] Figure 16 illustrates photometric views of the light emitted by the optical assembly of Figure 13 and a number of competing products.

[0038] Figure 17 illustrates photometric views of light emitted over an area by a number of the optical assemblies in Figure 13 and a number of competing products.

[0039] Figure 18 illustrates photometric views of simulated light emitted by a corner optical assembly according to the present invention and several competing products. Detailed Description of the Invention

[0040] The description set forth below in connection with the accompanying figures is intended to be a description of various embodiments of the disclosed subject matter and is not intended to necessarily represent the only embodiments. In certain cases, the description includes specific details for the purpose of providing an understanding of the disclosed embodiments. However, it will be evident to those skilled in the art that the disclosed embodiments can be practiced without such specific details. In some cases, well-known structures and components may be shown in block diagram form to avoid complicating the concepts of the disclosed subject matter.

[0041] Reference throughout the specification to a modality or modality means that a particular feature, structure, or characteristic described in conjunction with a modality is included in at least one modality of the disclosed subject matter. Therefore, the occurrence of the phrases “in a modality” or “in a modality” in various places throughout the specification does not necessarily refer to the same modality. Furthermore, particular features, structures, or characteristics may be combined in any suitable manner in one or more modalities. In addition, the modalities of the disclosed subject matter are intended to cover modifications and variations thereof.

[0042] It should be understood that terms such as top, bottom, front, side, length, Terms such as "inferior," "interior," "internal," "external," and similar terms that may be used herein simply describe reference points and do not necessarily limit the scope of this disclosure to any particular orientation or configuration. Furthermore, terms such as "first," "second," "third," etc., simply identify one of several portions, components, steps, operations, functions, and / or reference points as disclosed herein, and likewise do not necessarily limit the scope of this disclosure to any particular configuration or orientation.

[0043] Conventional lighting applications may attempt to control the amount of backlight or corner light to meet visibility / non-visibility, intensity, or other specifications. However, existing corner control and backlight control optics have several limitations. For example, conventional optics may not be able to produce a light distribution with a sharp and precise backlight cutoff, which can result in a backlight cutoff line that is separate from a fixture installation line and may allow unwanted light to spill over in an undesired direction, such as into neighboring properties (e.g., see Figure 1). Existing optics may also be unable to meet the specifications related to a LEED program such as LEED v4 and earn additional points.

[0044] This disclosure provides an optical mount that overcomes several previous limitations. In some embodiments, the optical mount herein comprises a reflector housing that provides extreme light cutoff while also reflecting a greater portion of light in the desired direction to improve light coverage. In some embodiments, the extreme light cutoff can be characterized by the ratio of mounting height to backlight distance. For example, if the optical mount is mounted at a height of 20 feet (6.096 m), the backlight cutoff will be less than 5 feet (1.52 m) behind the pole. In some embodiments, backlight cutoff to mounting height ratios of less than 0.5, less than 0.4, less than 0.3, less than 0.25, less than 0.2, less than 0.15, less than 0.1, or less can be achieved.For example, comparing a first cut line 15 (in Figure 1) and another cut line 25 (in Figure 2) shows that cut line 25 is much closer to the street than the house side, thus achieving a much sharper cut using the optical mount of the present disclosure.

[0045] Additionally, an asymmetric lens design is provided that can reduce the reflector size while offering more precise and / or sharper light cutting. The lens structure can take various forms. In some non-limiting examples, the lens may include a clear optic co-molded into a base (e.g., a black or other colored base), a clear optic glued and / or otherwise secured to a base (e.g., a black or other colored base), and / or it may include a base and optic integrally formed, with a surface of the base painted or otherwise colored (e.g., black or another color). In some embodiments, the lens and / or base may include a silicone material, as silicone can offer desirable photometric and thermal performance.

[0046] Regardless of the lens material, it may be desirable for the greater part of the surface of the base 100 that is exposed to the emitted light (e.g., the first surface 10Of in Figure 4A) to incorporate a light-absorbing mechanism (e.g., one that absorbs at least 90% of the light incident upon it). As explained above, the exposed surface (e.g., the first surface 10Of) of the base 100 can be painted a color OQQQcn / cznz / a / uili dark (e.g., black). If the lenses are formed from PMMA or another painted material, the portion of the lenses that attaches to the base 100 (e.g., that flat strip portion 110 in Figure 4A) can be similarly painted a dark color (e.g., black). Lenses formed from a silicone material cannot be painted. Therefore, a dark material (e.g., black) (e.g., felt, paper, etc.) can be provided on the top or bottom surface of the portion of the lenses that attaches to the base for light absorption. Alternatively, the transparent portion of the lenses (the dome-shaped portions) can be molded together with and / or bonded to a darker material that forms the portion of the lenses that attaches to the base 100.

[0047] In some embodiments, the optical assembly comprises one or more light sources, several lenses (for example, made of PMMA or silicone material) positioned over the light sources, and one or more reflectors (for example, made of pure black plastic with a vacuum-metallized reflective surface) positioned near the lens. Different components of the optical assembly and their configuration are further discussed in detail with reference to Figures 315, according to some embodiments.

[0048] Figure 3 is a perspective view of an optical assembly 10, according to one embodiment. The optical assembly 10 includes a base 100, a plurality of lenses (for example, lenses 111-115 and lenses 121-125) disposed on the base 100 and over a plurality of light sources 150 (for example, shown in Figure 4C), and one or more reflectors 201-204 each having a reflective surface 201c-203c disposed adjacent to one or more of the plurality of light sources 150 and / or the plurality of lenses (for example, lenses 111-115 and lenses 121-125). Each of the reflector surfaces 201c-203c can be a reflective surface configured to reflect light from the LEDs; as such, they may be alternatively referred to as the reflector surfaces 201c-203c. The reflector surface 201c can be projected onto at least a portion of one or more of the light sources 150.In some embodiments, the reflecting surface 201c-203c may be formed from one or more angled and / or curved sections projecting upward from the base 100 and over at least part of one or more of the light sources 150. For example, the reflecting surface 201c may include a single flat surface inclined with respect to the base 100 to extend over at least a portion of one or more of the light sources 150, whereas in other embodiments the reflecting surface 201c may be formed from multiple flat portions at different angles to each other. In still other embodiments, all or part of the reflecting surface 201c may be curved, and may include a constant or variable degree of curvature. In some embodiments, the light sources 150 can be light-emitting diodes (LEDs) 150. The reflective surface 201c in combination with the lenses 111-115 and the LEDs 150 allows the light to be directed in a desired direction.The reflective surface 201c is also configured to prevent light from traveling in unwanted directions. For example, as will be discussed in more detail later, the reflectors 201 can be positioned relative to the LEDs 150 and lenses 111-115 so that light emitted from each lens 111-115 in unwanted directions can strike one of the surfaces 201c, which then reflects that light in a desired direction and / or away from the unwanted direction. The base 100 can also prevent light from the LEDs from traveling in directions other than the desired direction. For example, in some embodiments, the base 100 can be formed from and / or coated with a black (or other dark-colored) material. For example, the base 100 can absorb at least OQQQcn / cznz / a / uιλι 90%, at least 91%, at least 92%, at least 93%, at least 94%, at least 95%, at least 96%, at least 97%, at least 98%, at least 99% or more of light. This allows the base 100 to absorb light directed towards it, thus preventing and reducing the amount of light reflected by the base 100, some of which might otherwise be reflected in an undesired direction. Light emitted from the LEDs 150 and / or lenses 111-115 in a downward direction and / or light reflected downward using the reflectors 201 can be absorbed by the base 100, preventing this light from being directed in an undesired direction (e.g., a houseside direction). In some embodiments, the optical assembly 10 can be a luminaire used to illuminate a street.In this example, the optical assembly is configured to project light in a desired direction (in this case, one side of the street), while limiting or preventing light projection in an undesired direction (in this case, one side of the house, such as a front or back yard, or any other area that should not be illuminated / do not allow light to enter). The components of the optical assembly, including the lenses, LEDs, and reflectors, are discussed in further detail later.

[0049] A light source emits light that can be further received and distributed by the lens, as discussed herein. In some embodiments, the light source may be, or may comprise, one or more light-emitting diodes, for example. The light source and / or the emitted light may have an associated optical axis. The light source may be deployed in applications where it is desirable to deflect the illumination laterally with respect to the optical axis. For example, as shown in Figures 2 and 7B, in a street luminaire where the optical axis is pointing towards the ground, it may be beneficial to direct the light towards one side of the street from the optical axis, rather than towards a row of houses that are adjacent to the street (for example, see Figure 2). The light source may be positioned with respect to a lens that receives light propagating on one or both sides of the optical axis and redirects that light towards the reflector and / or directs the light forward towards the street side.For example, the lens can receive light directed towards the houses and redirect that light towards the street through reflector 201.

[0050] In some embodiments, as shown in Figures 3, 4A, and 5, the plurality of lenses 111-115 are arranged on the base 100 and separated from each other in a row 110. Similarly, another plurality of lenses 121-125 are placed in another row 120. In one embodiment, as shown in Figures 3 and 4A, the lenses 111-115 may be provided as individual components, as sheets containing multiple rows of lenses, as strips 110s containing a single row of lenses, and / or other forms. Providing the lenses in one or more 110s sheets or strips can facilitate the coupling of multiple lenses to a corresponding LED array and / or the 100 base. For example, the 110s and 120s lens strips are coupled to a first surface 10Of (for example, a front, top, or exposed surface in Figure 4A) of the 100 base.An internal surface of each lens 111-115 may define a cavity 140 (as shown in Figure 4C) or other volume that can receive light from one of the LEDs 150. The base 100 may include a plurality of apertures or openings (e.g., 131-135). The apertures 131-135 may be accessed from a second opposite surface 100b of the base 100 (e.g., a rear, bottom, or back surface in Figure 4B). The LED array may be arranged through the apertures 131-135 from the second surface 100b. In this embodiment, the printed circuit board (PCB) supporting this LED array would generally be located below the base 100. Accordingly, an optical assembly or lighting system may comprise one. OQQQcn / cznz / a / uli two-dimensional LED matrix. The resulting two-dimensional LED matrix may comprise a light module or light bar, one or more of which may be arranged in a luminaire or other lighting device, for example.

[0051] In some example modalities, the lenses (e.g., lenses 111-115 and lenses 121-125) may be formed from optical-grade silicone and may be flexible and / or elastic. In some example modalities, the lenses may be formed from an optical plastic such as polymethyl methacrylate (PMMA), polycarbonate, silicone, or a suitable acrylic, to mention a few representative material options without limitation. The base 100 may be configured to absorb light and / or redirect light in a desired direction. For example, in some modalities, the base 100 may be colored so that it has desired reflectance and / or absorption properties. For example, the base 100 may be black, or any dark color that absorbs a high percentage of light (e.g., greater than 90%). In some modalities, the base 100 may include a host material and a colorant within the base material. The colorant can be a pigment, a dye, etc.which colors the host material, thereby adjusting its absorption / reflection properties. For example, in some embodiments, the base material 100 can be selected to absorb at least 90%, at least 91%, at least 92%, at least 93%, at least 94%, at least 95%, at least 96%, at least 97%, at least 98%, at least 99%, or more of light. Non-limiting examples of suitable host materials include PMMA, silicone, and / or other polymeric materials. In some embodiments, the base material 100 can include a host material having a first surface and a second surface opposite the first surface. The first surface can be an upward-facing surface. A colored layer can be placed on the first surface. The colored layer can be a layer of paint, dye, etc.

[0052] By providing the 100 base with a black or otherwise dark outer surface, any light incident on the first 100f surface can be absorbed rather than reflected, thus preventing light leakage in an unwanted direction (e.g., the house side).

[0053] With reference to Figure 5, the plurality of lenses 111-115 and 121-125 can be individually attached to base 100. In some embodiments, the plurality of lenses 111-115 and 121-125 can be glued or co-molded with base 100. For example, the plurality of lenses 111-115 and 121-125 can be attached to base 100 using an adhesive. In other embodiments, the lenses 111-115 can be fitted, clamped, and / or otherwise mechanically secured to base 100.

[0054] As shown in Figures 4C and 5, lenses 111-115 can have a dome-shaped outer surface 111o with a central axis perpendicular to a base plane 100. For example, lenses 111 and 121 have central axes 111a and 121A, respectively, as shown in Figure 4C. The central axis 111a or 121a can be an axis that passes through a lens center 111 or 121. In some modalities, the central axis of a lens lies within a plane (perpendicular to plane 311 in Figure 8A) (1) that extends through the lens in a direction that is parallel to the house-side to street-side direction (i.e., the x-direction in Figure 8A) and / or extends perpendicular to the length of the reflector (i.e., the y-direction in Figure 8A) and (2) that extends through the optical cavity 140.With reference to that plane (see, figure 8C), the central axis of the lens extends along the height of the lens (i.e., along the z direction) and bisects the midpoint of the linear distance between the endpoints 901, 904 of the outer surface 111o (i.e., where the outer surface intersects the base plane 100). OQQQcn / cznz / a / uιλι

[0055] In some embodiments, as shown in Figures 8C and 9A-9B, the LED 150 of the LED plurality is arranged in a cavity 140 of the lens 111 of the lens plurality 111-115 such that the central or optical axis 150a of the LED is displaced from the central axis 111a of the lens 111 in a direction toward the reflecting surface 201c of the reflector 201. In other embodiments, the lens plurality 111-115 has a corresponding plurality of LEDs 150 arranged therein such that the central axes of the lenses are displaced toward and near the reflector 201.

[0056] In some embodiments, as shown in Figures 4C and 6(b), each of the plurality of light-emitting diodes (LEDs) 150 is placed in a corresponding lens of the plurality of lenses 111-115. The LED 150 has an optical axis 150a perpendicular to a plane of the LED or perpendicular to the base 100. In embodiments, as shown in Figures 4C and 8A-8C, the optical axis 150a of an LED 150 is offset from the central axis 111a of an external surface of the lens 111 of the plurality of lenses 111-115. In other embodiments, the optical axis 150a of the LED 150 and a central axis 111a of the external surface 111o of the lens 111 are aligned or not offset from each other. In some embodiments, each LED 150 can be provided on a printed circuit board (PCB) 160 and / or other substrate. The PCB 160 can be bonded to the second surface 100b of the base 100 such that the LEDs reside within and emit light in the lens cavities 140.In some embodiments, the PCB 160 and / or other substrate can be configured to absorb at least 90% of incident light, such as by including a light-absorbing material (e.g., a material containing a pigment that absorbs at least 90%, at least 91%, at least 92%, at least 93%, at least 94%, at least 95%, at least 96%, at least 97%, at least 98%, at least 99% or more of light).

[0057] Figures 7A and 8A illustrate a cross-sectional view showing the structure of an example lens 111, according to one modality. As shown, the lens 111 has a dome shape with an inner surface 1111 oriented toward the LED 150 and an outer surface 111o oriented away from the LED 150, opposite the inner surface 1111. The inner surface 111i may include a refractive surface that receives light moving away from the optical axis of the LED 150, for example, away from the street to be illuminated. The inner surface 111a can be a concave lens surface facing the LED 150, the inner surface 1111 being separated from an outer surface of the LED 150. The inner surface 1111 can receive the incident light from the LED 150 and create a refracted beam that exits the lens 111a through the outer surface 111o, causing the beam to diverge.The outer surface 111o can be a convex lens surface, for example. In some modalities, the inner surface 111i can have a shape that differs from the shape of the outer surface 111o. For example, the inner surface 1111 can have a concave shape that differs from the convex shape of the outer surface 111o. In some modalities, the concave shape of the inner surface 111i is offset from the outer surface 111o.

[0058] As noted above, each lens 111-115 may comprise a cavity 140 (see Figures 4C and 7A) having a concave shape. The lens walls may be asymmetrical in some embodiments. For example, a back wall (e.g., closer to the reflector 201) may be thinner than a front wall (e.g., farther from the reflector 201), which may allow the LED 150 to be positioned closer to the reflector 201 to provide a sharper light cutoff angle. The cavity 140 may be filled with air between the inner surface 1111 and the LED 150. The cavity 140 receives light from the LED 150. In some embodiments, the lens 111 comprises a receptacle in which the LED 150 may sit or be otherwise arranged. The receptacle may have an irregular shape to OQQQcn / cznz / a / uli receive a circuit board on which one or more light-emitting diodes are mounted, for example.

[0059] With reference to Figures 8A-8B, a lens (e.g., lens 111) is symmetric about a reference plane 311 that extends through the optical axis 150a of LED 150 along the y-direction (in Figure 8A) and when viewed in the x-direction (in Figure 8A). Additionally, with reference to Figures 8A and 8C, the lens is asymmetric about reference plane 311 when viewed in the y-direction (in Figure 8A) because the central axis 111a of the lens is offset from reference plane 311. As shown in Figure 8C, reference plane 311 separates the lens into a street-side portion and a house-side portion. The street-side portion is larger than the house-side portion to reduce the size of the optical system while providing a better cutoff.The street-side portion controls a main beam emitted from LED 150 and directs the beam in a desired direction (e.g., between 55° and 75° relative to nadir). The house-side portion acts as the light-transmitting layer that sends light to reflector 201. This lens design advantageously directs more light in a desired direction through the lens. For example, a smaller lens portion (e.g., the house-side lens portion) provides better beam cutting by the reflector and allows for a reduced height of reflector 201, resulting in a more compact optical assembly.For example, by shifting cavity 140 and / or LED 150 from the central axis 111a of lens 111 in a direction towards reflector 201 (i.e., the optical axis 150a of LED 150 is closer to the base of the reflector than the central axis 111a of lens 111), the optical axis 150a of LED 150 can be positioned closer to reflector 201, which may allow the height of reflector 201 to be reduced while still providing a desired cutoff angle for the light. [1] With reference to Figures 3, 6, 7, 8A, 9A, and 9B, each reflector 201 may project from the base 100 at a first end 905 (near the base) and terminate at a second end 903 and may have a reflective surface 201c extending between the first end 905 and the second end 903 (see Figures 9A, 9B). For example, each reflector 201 may include a first side encompassing the reflective surface 201c (e.g., the street side) and a second opposite side 201b (e.g., a house side or a side behind the reflective surface 201c). In one embodiment, reflector 201 is an elongated member that has a reflective material or coating on the reflective surface 201c, while the second side can be painted black (or another dark color) to prevent light from a different row of LEDs from reflecting back to the house side.Each reflector 201 is arranged adjacent to the plurality of lenses 111-115, which have a corresponding plurality of LEDs 150 thereon, such that the plurality of LEDs 150 or lenses 111-115 are located on the first side (e.g., street side). As illustrated, the reflective surface 201c extends in a direction perpendicular to the plane of the base 100; however, in other embodiments, the reflective surface 201c may extend from the base 100 at other angles. The reflective surface 201c curves over the plurality of LEDs 150 located in the corresponding plurality of lenses 111-115. The reflective surface 201c (i.e., the second end 903) further extends beyond the optical axis 150a of the LED 150.Therefore, the reflective surface 201c is configured to direct the light emitted by the plurality of LEDs 150 towards the first side (e.g., the street side) and prevent light from escaping to the second side (e.g., the house side) of the reflector 201.

[0060] With reference to figure 3, the optical assembly 10 may include a plurality of reflectors 201, 202, 203 and 204 OQQQcn / cznz / a / uli and corresponding rows of lenses and LEDs. In one embodiment, each reflector 201-204 has the same construction and is positioned similarly with respect to the corresponding plurality of LEDs. For example, reflector 202 is positioned adjacent to the second plurality of lenses 121-125 that cover a corresponding plurality of LEDs 150 such that the reflective surface 202c extends over and beyond a central axis of the LEDs 150. While shown with a single reflector extending along a length of each row of LEDs 150, it will be seen that in some embodiments multiple reflectors can be provided for each row of LEDs 150. For example, each LED 150 and pair of lenses (or a number of pairs within each row) may include a dedicated reflector.

[0061] In Figure 3, the plurality of lenses, the plurality of LEDs, and the reflectors are arranged in several rows. For example, as shown in Figure 3, the first plurality of lenses 111-115 are arranged in a first row, and a first plurality of LEDs (for example, see 111 in Figure 4C) are arranged on the corresponding lens of the first plurality of lenses 111-115. The first reflector 201 is arranged adjacent to the first plurality of lenses 111-115 such that the reflective surface 201c of the first reflector 201 extends over the first plurality of lenses 111-115.

[0062] The second plurality of lenses 121-125 are arranged in a second row separate from the first row and a second plurality of LEDs (for example, see LED 150 in lens 121 in Figure 4C) arranged in the corresponding second plurality of lenses 121-125. The second reflector 202 is arranged between the first plurality of lenses 111-115 and the second plurality of lenses 121-125 such that a reflective surface 202c of the second reflector 202 extends over the second plurality of lenses 121-125. In other words, with respect to reflector 202, the second plurality of LEDs in lenses 121-125 are located on the first side of reflector 202 (e.g., street side), and the first plurality of lenses 111-115 are located on the second side of reflector 202 (e.g., house side).In some embodiments, the second side of the 201-204 reflectors can be coated or formed from a black (or other dark-colored) material to absorb the light emitted by the LEDs on the second side or partially reflective to reflect the light emitted by the LEDs on the second side without interfering with the light emitted by the LEDs on the first side.

[0063] As illustrated with the LEDs 150 and lenses 111-115, 121-125 arranged in two parallel rows, it will be seen that other arrangements are possible in the various configurations. For example, the LEDs and lenses can be arranged in any number of rows, columns, and / or other patterns. The LEDs and lenses can be arranged at regular and / or irregular intervals in one or more directions. Additionally, the total number of LEDs and lenses and / or the number of LEDs and lenses in a given row, column, or other array can vary across the configurations to meet the needs of a particular lighting application.

[0064] In some embodiments, as shown in Figure 3, reflector 201 (and 202–204) may include side reflectors between each lens to redirect and reflect light traveling in a direction that aligns with, or substantially aligns with, a length of reflector 201 in a desired direction (e.g., street side), thereby improving the lighting profile on the street side. The side reflectors can also prevent light interference between adjacent LEDs, thereby improving light utilization efficiency. For example, reflector 201 includes side reflectors 211, 212, 213, and 214 that project from the reflective surface 201c to the first side (e.g., street side). In some embodiments, the side reflectors 211–214 may be curved or transition from the surface OQQQcn / cznz / a / v of reflector 201. In some embodiments, the side reflectors 211-214 may be inclined (for example, up to 5°) with respect to a perpendicular to the base 100. The side reflector 211 has a reflective surface 211r facing the LED in lens 111. The side reflector 212 located between lenses 111 and 112 has two reflective surfaces 212r, one surface 212r facing lens 111 and the other surface 212r facing lens 112. Similarly, each of the side reflectors 213 and 214 has reflective surfaces 213r and 214r facing the lenses between which each is interposed.

[0065] Therefore, the optical assembly 10 can be configured to direct light from each row of LEDs through a corresponding reflector into the street without light interference between LEDs or light interference between adjacent rows of LEDs. Thus, the light emitted from each LED or row of LEDs can be better directed to a desired direction (e.g., street side) to improve light utilization, while preventing the light emitted by the optical assembly 10 from being directed to undesired directions (e.g., house side).

[0066] In some embodiments, as shown in Figures 7A, 8A, and 9A-9B, the reflective surface 201c of the reflector 201 may have a partially concave shape. However, this disclosure is not limited to a concave shape. In some embodiments, different linear and / or curved surfaces may be created to direct the light in a desired direction. For example, the reflective surface 201c of the reflector 201 may have a parabolic shape extending from the base 100 to and beyond the central axis of the LED plurality.As another example, the reflective surface 201c of reflector 201 may have a freeform characterized by multiple curvatures between endpoints of the reflective surface 201c, with a first endpoint located at the junction of the reflective surface 201c and the base 100, and a second endpoint being a distal end of the reflective surface 201c extending over the plurality of lenses 111-115. For example, the freeform comprises a first curvature between the first endpoint at the base 100 and an intermediate point between the first and second endpoints; and a second curvature between the intermediate point and the second endpoint of the curved surface. The freeform can generally be characterized by the curved portion extending in a direction from the selected area (e.g., a street-side direction).

[0067] In some embodiments, the reflector 201 has a reflective surface 201c with a linear segment or base extending approximately perpendicularly from the base 100 to a height corresponding to a top portion of the outer surface 111o of the lens 111. Extending from the linear segment, the reflective surface 201c may be further extended with a curve toward the central axis of the LED. For example, the curve may be characterized by a plurality of points connected by curved line segments. The series of curved segments each comprises a reflective surface and a curvature having a profile of an arc segment of an ellipse, a parabolic curvature, a hyperbolic curve, or other portions of a curve of second degree or higher.

[0068] With reference to Figures 9A and 9B, the reflecting surface 201c of reflector 201 can be characterized by a first angle β, a second angle β, or both. The first angle β is formed between the base 100 and a line 902 extending from a distal end 901 (e.g., street side) of lens 111 farthest from the reflecting surface 201c to a distal end 903 of the reflecting surface 201c located above lens 111. The second angle β is formed between the base 100 and a line 912 extending from a position 911 on the outer surface 111o of lens 111. OQQQcn / cznz / a / uli which aligns with the optical axis 150a of LED 150 and the distal end 903 of the reflective surface 201c located on lens 111.

[0069] In some configurations, the first angle a may be within a range of 60° to 90° (e.g., 60°–70°, 70°–80°, 80°–90°, or other narrow ranges). In some configurations, larger angles may also allow for a lower reflector height and / or provide a sharper backlight cutoff.

[0070] In some embodiments, the second angle β may be in the range of 70° to 130°. In some embodiments, the reflector 201 satisfying the first angle α, the second angle β, or both facilitates a compact design while providing a desired cutoff of the backlight (e.g., light directed toward the house side). For example, the reflective surface 201c of the reflector satisfying the first angle and the second angle conditions facilitates a reduction in the height of the reflector 201 required to cut off the backlight and also allows the positioning of the LEDs 150 close to the reflective surface 201c so that the light from the LEDs can be directed in a desired direction (e.g., street side). In other words, the first angle α and the second angle β bring the distal end 903 of the reflective surface 201c closer to the LEDs while facilitating the cutoff of the backlight (e.g., light directed toward the house side).

[0071] In some embodiments, with reference to Figures 9A-9C, the reflective surface 201c of the reflector 201 facilitates a compact design compared to a straight-edged reflector 250 (see Figure 9C). For example, the reflective surface 201c extends over the optical axis 150a of the LED 150, allowing the beam emitted from the LED and transmitted through the lens 111 to be cut off near the lens 111 before the beam can propagate. The height of the reflective surface 201c can be H1. On the other hand, if the straight-edge reflector 250 is used, a height H2 of the straight-edge reflector 250 from the base 100 is required to intercept a beam 922 transmitted at the distal end 901 of the lens 111. Comparing Figures 9A and 9C shows that the beam 922 in Figure 9A is intercepted at the reflecting surface 201c within a short distance.On the other hand, the beam 922 in Figure 9C needs to be shifted much further before it is intercepted by the straight-edge reflector 250. Therefore, the height H1 of the reflector 201 can be substantially less than the height H2 of the straight-edge reflector 250 while still providing the desired backlight cutting capacity. For example, the H1 / H2 ratio can be between 1 / 3 and 1 / 2. As such, a more compact lighting system (e.g., a luminaire) can be designed using the reflector 201.

[0072] In some embodiments, a reflector may have an angular shape to illuminate a corner space. In some embodiments, as shown in Figures 10 and 11, a reflector 400 may be angularly shaped, comprising a first surface portion 401, a second surface portion 403 disposed at an angle to the first surface portion 401, and a corner surface portion 402 connecting the first surface portion 401 and the second surface portion 401. The first surface portion 401 and the second surface portion 403 have surfaces 401c and 403c, respectively. Surfaces 401c and 403c may have a structure similar to the reflective surface 201c of the reflector 201 discussed herein. The corner surface portion 402 also has a surface 402c to direct the emitted light toward a corner back in a desired direction (e.g., street side).In one embodiment, the surface portion 402 curves along multiple axes to connect the first surface portion 401 and the second surface portion 403. Similarly, the surface. OQQQcn / cznz / a / uιλι 402c of surface portion 402 also curves along multiple axes (e.g., the x and y axes in the plane defined by the base 100) connecting surfaces 401c and 403c and also curves further along another axis (e.g., the z axis perpendicular to the base 100) and extends over the lens to at least partially cover the lens.

[0073] Figure 11 illustrates an example corner optical assembly 40 comprising a plurality of corner reflectors such as reflectors 400 and 410. At the corners of each reflector 400 and 410, an LED 150 is located in each of lenses 111 and 112, respectively. Surfaces 401c, 402c, and 403c of reflector 400 are oriented toward the LED 150 in lens 111. Similarly, surfaces 411c, 412c, and 413c of reflector 410 are oriented toward the LED 150 in lens 112. The optical assembly 40 includes additional similar corner reflectors and lenses, although not numbered. As discussed herein, reflectors 400 and 410, and lenses 111 and 112 of optical assembly 40 can be installed on base 100. Base 100, along with the reflectors, lens, and LEDs, can be further supported by frame 450. Frame 450 can provide a support structure for the base and reflectors.The 450 frame can also be adapted for installation in a luminaire housing.

[0074] Figure 12 illustrates an example of a luminaire 20 implementing an optical assembly 10. The optical assembly 10 can be installed in a housing 50 attached to a pole 60. The pole 60 can be installed on the housing side, and the housing 50 can extend into the street or a corner to be illuminated. Although not illustrated, the optical assembly 40 can be incorporated into a luminaire, for example, by replacing the optical assembly 10 of the luminaire 20 with the optical assembly 40.

[0075] The optical assemblies discussed herein can be configured for various applications. For example, the optical assembly can be used to illuminate a selected area (e.g., a street) while cutting off and otherwise preventing light leakage away from the selected area (e.g., into a house). For this purpose, the reflector can be curved as discussed herein. The optical assembly can be oriented downwards towards the ground so that the optical axes 150a of the LEDs 150 are oriented in a generally downward direction (e.g., see Figures 2 and 7B), and the curved surface of the reflector directs the light towards a selected area (e.g., the street, a driveway, or other indoor or outdoor areas). The reflector can be configured as a corner reflector (e.g., see Figures 10-11) to direct light to a particular corner.In some embodiments, the optical assembly may include a combination of curved reflectors (e.g., reflector 201) and corner reflectors (e.g., 400). In some embodiments, the optical axis 150a of the LEDs 150 may be oriented upwards, and the reflectors may be positioned to direct light onto a wall, portico, or object of particular interest for decorative purposes. It may be understood that the present application uses a selected area, such as a street, to illustrate the concepts. However, this disclosure is not limited to a particular application, and the optical assembly may be configured to direct light onto any selected area or region, whether interior (e.g., a wall inside a house) or exterior (e.g., a street, walkway, porch, etc.).

[0076] Figure 13 illustrates an optical assembly 500, according to another embodiment. The optical assembly 500 may be similar to the optical assembly 10 and may include any of the features described in relation to the optical assembly 10. The optical assembly 500 may include a base 502, a plurality of lenses 504 arranged in or coupled with the OQQQcn / cznz / a / uli base 502 to extend from and / or above the exposed surface of the base, a plurality of light sources (not shown) arranged in or behind the plurality of lenses 504, and one or more reflectors 506 each having a reflective surface 508 (which may be similar to the reflective surface 201) arranged adjacent to one or more of the plurality of light sources and / or the plurality of lenses 504. In some embodiments, the lenses 504 and / or light sources may be arranged in one or more rows that are separated from each other. Each row of lenses 504 and / or light sources may include one or more of the reflectors 506, with the reflective surface 508 of each reflector 506 extending from the base 502 and extending over at least a portion of one or more of the lenses 504 and / or light sources as described above with respect to the reflectors 201.

[0077] Figures 14 and 15 illustrate top and bottom perspective views of the 502 base and the 504 lenses. As illustrated, the 502 base can be configured to prevent the LED light from traveling in directions other than the desired direction. For example, in some embodiments, the 502 base can be configured to absorb at least 90%, or more, of the light incident upon it. In some embodiments, the 502 base can be formed from and / or coated with a light-absorbing material, such as a material containing a dark pigment that absorbs substantially all the light (e.g., absorbs at least 90%). This can enable the 502 base to absorb light directed toward it to prevent and / or reduce the amount of light reflected by the 502 base, some of which might otherwise be reflected in an undesired direction.

[0078] The 502 base can define a number of 510 apertures, with each of the 510 apertures receiving a respective 504 lens and / or light source. For example, each 504 lens may include a dome extending from a rear side of the 502 base and extending at least partially through one of the respective 510 apertures. As described in relation to the 111-115 lenses, the dome may be asymmetrical along at least one axis that is parallel to the 502 base. For example, in some modalities, each 504 lens may have an elliptical shape having a major axis and a minor axis that extend in a direction parallel to the 502 base. The dome of each 504 lens may project from the 502 base and may be asymmetrical along the major axis (or another axis that extends through the 504 lens and the corresponding 506 reflector).For example, a dome slope may be steeper on one reflector side of the dome than on an opposite surface along the main axis. In some configurations, the light sources may be positioned closer to the reflector side of the dome, allowing the corresponding 506 reflector to be placed closer to the light source to provide a sharper light cutoff angle.

[0079] In these embodiments, the light sources may include an array of LEDs provided on a printed circuit board and / or other substrate. Lenses 504 may be inserted through the apertures 510 of base 502 from the rear side of base 502 so that the lenses 504 are sandwiched between the printed circuit board and base 502. By placing the lenses 504 within the apertures 510 formed within base 502, the surface area of ​​base 502 exposed to optical assembly 500 may be increased. When base 502 is configured to absorb substantially all incident light, the increased surface area may allow higher levels of light directed toward base 502 to be absorbed and thus help prevent light from being directed in an undesired direction. These embodiments may allow optical assembly 500 to direct at least or OQQQcn / cznz / a / uli approximately 95%, at least or approximately 96%, at least or approximately 97%, at least or approximately 98%, at least or approximately 99%, at least or approximately 99.5%, at least or approximately 99.7%, or more of the light in a desired direction (e.g., a side of the street), with less than approximately 5%, less than approximately 4%, less than approximately 3%, less than approximately 2%, less than approximately 1%, less than approximately 0.5%, less than 0.3%, or less of the light directed toward an undesired (e.g., opposite) direction (e.g., a side of the house). A light-cutting plane (i.e., a reference plane separating the desired direction from the undesired direction) may be in vertical alignment with a light source and / or reflector further back (e.g., closer to the undesired direction) of the optical assembly.In other words, the light cutting plane (1) can extend through the optical axis of one or more of the plurality of LEDs located within the optical assembly at a more distal location from the desired direction and (2) can extend parallel to the optical axis of those one or more LEDs and perpendicular to the desired direction.

[0080] In some embodiments, the base 502 may include a front surface 512 and a rear surface 514 opposite the front surface 512. Reflectors 506 may be placed on the front surface 512. The rear surface 514 may define one or more recesses 516 that can receive lenses 504. For example, lenses 504 may be provided as one or more strips and / or sheets of optical material, each of which may include one or more rows of lenses 504. The strips of material may be inserted into the recesses 516 to seat the lenses 504 within the apertures 510 defined within the base 502. In some embodiments, the thickness of the material strips may be substantially the same as the depth of the recesses 516, so that a rear surface of each material strip is substantially level with the rear surface 514 of the base 502. In The illustrated modality, base 502 defines two recesses 516 that are parallel to each other.A strip of material containing a first row of 504 lenses is inserted into a first recess 516, and a second strip of material containing a second row of 504 lenses is inserted into a second recess 516. It will be appreciated that other arrangements are possible in various embodiments. For example, each 504 lens may be a separate component, each sheet and / or strip of material may include multiple rows of 504 lenses, the 504 lenses may be arranged in arrays without rows, and / or other variations are possible. In addition, some embodiments may include multiple bases placed side by side.

[0081] In some embodiments, the back surface 514 of the base 502 may include one or more adhesive channels 520 to receive adhesive for bonding the lenses and / or PCB (for example, 160 in Figure 4C) to the back surface 514 of the base 502.The adhesive channels 520 can contain the adhesive within the channels so that the adhesive cannot enter the openings (e.g., openings 131-135 in Figure 4B) in the base 502 and adversely affect the operation of the lenses 504 and / or the LEDs. The adhesive channels 520 can extend along any length of the rear surface 514. The adhesive channels 520 can also extend across the width of the rear surface 514 into the openings through which the lenses 504 can be arranged.

[0082] The test was performed on a fixture with the optical mounts described in Figures 13-15 to determine the backlight cutoff properties of the fixture with the 500 optical mount. The tests were performed in accordance with IES LM-79, dated 2019. Based on the tested distribution, the lumen output of the The mounting was scaled to 20,000 lumens, and the application design was based on a mounting height of 20 feet (6.096 m). A cut-off plane 602 is a vertical plane that intersects the optical center of the fixture (e.g., the plane separating the street side from the house side). The area illustrated as being above the cut-off plane 602 is a desired direction (e.g., the street side or the forward direction relative to the fixture head and pole, counting from the optical center per IES LM-63). The area illustrated as being below the cut-off plane 602 is an undesired direction (e.g., the house side or the rearward direction relative to the fixture head and pole, counting from the optical center per IES LM-63-02 and LM-63-19). The accessory with the 500 optical mount produced the 600a lighting application design as shown in Figure 16. The 500 optical mount directed the 99.7% of the emitted light was directed in a desired direction (e.g., a side of the street) relative to the 602 cut-off plane, while only 0.3% of the emitted light was directed in an undesired direction (e.g., a side of the house), achieving a B0 backlight rating of up to 65,000 lumens according to the IES LM-79 goniophotometer test results. Lighting application designs 600b-600f illustrate the performance of competing fixtures with the same lumen output and application design conditions. The lighting fixture with the 500 optical mount produced better backlight control than each of the competing optical assemblies tested, the best of which directed 2% of the emitted light in the undesired direction. The lighting fixture with the 500 optical mount also produced better illumination uniformity and coverage area compared to the competing lighting fixtures.As illustrated in Figure 16, the optical assembly provided a more uniform rectangular illuminance pattern in the target area that extended along both the length (e.g., orthogonal to plane 602) and width (e.g., along plane 602) axes. For example, as a lighting application design illustrated in Figure 17, the lighting fixture with the 500 optical mount delivered 1 foot-candle (fe) (10.764 lumens / m2) of light to an area approximately 50 feet (15.24 m) wide and 60 feet (18.28 m) long, 0.5 fe (5.38 lumens / m2) of light to an area approximately 60 feet (18.28 m) wide and 68 feet (20.72 m) long, and 0.1 fe (1.076 lumens / m2) of light to an area approximately 95 feet (28.95 m) wide and 95 feet (28.95 m) long.When placed around an area to be illuminated (such as, but not limited to, a parking lot), multiple fixtures including 500 optical mounts can provide better coverage (and better backlight control) than competing optical mounts, as illustrated in Figure 17. The light coverage achieved by the fixtures with the 500 optical mounts is shown in lighting application design 700a, while the coverage of the competing fixture is illustrated in lighting application designs 700b-700f. The test fixtures were spaced 146 ft (44.50 m) laterally (e.g., along cut plane 602) and 151 ft (46.02 m) longitudinally (e.g., for fixtures on opposite sides of the area).

[0083] Simulations were performed on fixtures including corner optical assemblies (such as those described in relation to Figures 10 and 11) that include bases and lenses similar to the 502 base and 504 lenses described herein. The simulations showed greater corner light control using these fixtures compared to competing corner control fixtures, as illustrated in the lighting application designs shown in Figure 18. Lighting application design 800a illustrates corner control. OQQQcn / cznz / a / uli provided by the accessory including the corner optical mount of the present invention, whereas the lighting application designs 800b-800d illustrate the performance of competing optical mounts. Examples

[0084] A collection of example modalities is provided later, including at least some explicitly listed as Examples that provide a further description of a variety of example types in accordance with the concepts described herein. These examples are not intended to be mutually exclusive, exhaustive, or restrictive; and this disclosure is not limited to these example modalities but encompasses all possible modifications and variations within the scope of the issued claims and their equivalents.

[0085] Example 1. An optical assembly comprising: a base; a plurality of lenses arranged in the base and separated from each other in a row, each lens having a dome shape having a central axis perpendicular to a plane of the base; a plurality of light-emitting diodes (LEDs), each LED being arranged between the base and a respective lens of the plurality of lenses, each LED having a central axis perpendicular to a plane of the LED, the central axis of an LED being offset from the central axis of the respective lens of the plurality of lenses;and at least one reflector having a curved surface, the at least one reflector being arranged adjacent to at least one of the plurality of LEDs such that the at least one of the plurality of LEDs is located on a first side of the at least one reflector, the curved surface extending from the base and curving over the at least one of the plurality of LEDs and beyond the central axis of each of the at least one of the plurality of LEDs, the curved surface being configured to direct the light emitted by the at least one of the plurality of LEDs towards the first side and prevent the light from escaping to a second side of the at least one reflector that is opposite the first side.

[0086] Example 2. The optical assembly of any of the preceding or subsequent examples or combination of examples, wherein each lens of the plurality of lenses defines a cavity, and each LED of the plurality of LEDs is disposed in a respective of the cavities so that the central axis of the LED is displaced with respect to a central axis of the respective lens in a direction of the curved surface of the at least one reflector.

[0087] Example 3. The optical assembly of any of the preceding or subsequent examples or combination of examples, wherein the curved surface of the reflector has a concave shape.

[0088] Example 4. The optical assembly of any of the preceding or subsequent examples or the combination of examples, wherein the curved surface of the reflector has a parabolic shape extending from the base to and beyond the central axis of the plurality of LEDs.

[0089] Example 5. The optical assembly of any of the preceding or subsequent examples or combinations thereof, wherein the curved surface of the reflector has a freeform shape characterized by multiple curvatures between end points of the curved surface, a first end point being at the base and a second end point being placed above at least some of the plurality of lenses.

[0090] Example 6. The optical assembly of any of the preceding or subsequent examples or combinations thereof, wherein the freeform comprises: a first curvature between the first endpoint at the base and an intermediate point between the first endpoint and the second endpoint; and a second curvature between the OQQQcn / cznz / a / uιλι intermediate point and the second end point of the curved surface.

[0091] Example 7. The optical assembly of any of the preceding or subsequent examples or combinations of examples, wherein the reflector is an elongated member having a reflective coating on the curved surface.

[0092] Example 8. The optical assembly of any of the preceding or subsequent examples or combinations thereof, wherein the curved surface of the reflector is characterized by at least one of: a first angle between a first line and a base plane, the first line joining a distal end of a lens farther from the curved surface and a distal end of the curved surface located above the lens, and a second angle between a second line and the base plane, the second line joining a point on the lens located on the central axis of the LED and the distal end of the curved surface located above the lens.

[0093] Example 9. The optical assembly of any of the preceding or subsequent examples or combinations of examples, wherein the first angle is in a range between 60° and 90°.

[0094] Example 10. The optical assembly of any of the preceding or subsequent examples or combinations of examples, wherein the second angle is in a range between 70° and 130°.

[0095] Example 11. The optical assembly of any of the preceding or subsequent examples or combination of examples, wherein the base comprises light-absorbing material or coating.

[0096] Example 12. The optical assembly of any of the preceding or subsequent examples or combination of examples, wherein the plurality of lenses is attached to the base by means of an adhesive.

[0097] Example 13. The optical assembly of any of the preceding or following examples or combination of examples, wherein: the plurality of lenses comprises: a first plurality of lenses arranged in a first row; and a second plurality of lenses arranged in a second row; and the plurality of LEDs comprises: a first plurality of LEDs arranged in the first plurality of lenses; and a second plurality of LEDs arranged in the second plurality of lenses.

[0098] Example 14. The optical assembly of any of the preceding or following examples or combinations thereof, wherein the at least one reflector comprises: a first reflector disposed close to the first plurality of lenses on an opposite side of the second plurality of lenses such that a curved surface of the first reflector extends over the first plurality of lenses; and a second reflector disposed between the first plurality of lenses and the second plurality of lenses such that a curved surface of the second reflector extends over the second plurality of lenses.

[0099] Example 15. The optical assembly of any of the preceding or following examples or combination of examples, wherein the at least one reflector extends along a single lens of the plurality of lenses.

[00100] Example 16. The optical assembly of any of the preceding or subsequent examples or combinations thereof, wherein the at least one reflector has an angular shape comprising a first curved surface portion, a second curved surface portion disposed at an angle to the first curved surface portion, and a corner portion between the first curved surface portion and the second curved surface portion, the corner portion having a curved surface extending along multiple axes.

[00101] Example 17. The optical assembly of any of the preceding or following examples or a combination of OQQQcn / cznz / a / υιλι examples, where the curved surface of the corner portion of at least one reflector curves between the first curved surface portion and the second curved surface portion, and also curves in a plane perpendicular to the base.

[00102] Example 18. The optical mounting of any of the preceding or subsequent examples or combinations thereof, wherein one lens of the plurality of lenses is located at the corner so that the curved surface of the corner portion curves at least partially over the lens.

[00103] Example 19. A luminaire configured to illuminate a selected area, the luminaire comprising: a base; a plurality of lenses arranged in the base and separated from each other in a row, each lens having a dome shape having a central axis perpendicular to a plane of the base; a plurality of light-emitting diodes (LEDs) arranged between the base and a respective lens of the plurality of lenses, each LED having a central axis perpendicular to a plane of the LED, the central axis of an LED being offset from the central axis of a respective lens of the plurality of lenses;at least one reflector having a curved surface, the at least one reflector being arranged close to at least one of the plurality of LEDs such that the at least one of the plurality of LEDs is located on a first side of the at least one reflector, the curved surface extending from a surface of the base and curving over the at least one of the plurality of LEDs and beyond the central axis of each of the at least one of the plurality of LEDs, the curved surface being configured to direct the light emitted by the at least one of the plurality of LEDs towards the first side and prevent the light from escaping to a second side of the at least one reflector that is opposite the first side;and a frame supporting the base and at least one reflector, the frame being oriented so that the curved surface of the at least one reflector curves towards the selected area to direct the light from at least one of the plurality of LEDs towards a selected area and prevent light from escaping in a direction away from the selected area.

[00104] Example 20. The luminaire of any of the preceding or subsequent examples or combination of examples, wherein the curved surface of the reflector has at least one of: a concave shape; a parabolic shape extending from the base to and beyond the central axis of the plurality of LEDs; or a freeform shape characterized by multiple curvatures between end points of the curved surface, a first end point being at the base and a second end point being positioned above at least some of the plurality of lenses.

[00105] Example 21. An optical assembly comprising: a base comprising a first surface, a second surface opposite the first surface, and a plurality of apertures extending through the base from the first surface to the second surface; a plurality of lenses coupled to the base, each lens having a central lens axis perpendicular to a plane of the base, wherein each lens is attached to the second surface of the base and extends at least partially through a respective one of the plurality of apertures to be at least partially exposed on the first surface of the base; a plurality of light-emitting diodes (LEDs), each LED positioned to emit light in a respective lens of the plurality of lenses, each LED having an optical axis;and at least one reflector arranged adjacent to at least one of the LEDs such that the at least one of the LEDs is located on a first side of the at least one reflector, wherein: the at least one reflector comprises a first end close to the base, a second end opposite the first end, and a; OQQQcn / cznz / a / uli reflective surface extending at least partially between the first end and the second end, the reflector extending from the base over at least one of the LEDs such that the second end of the reflector extends beyond the optical axis of that at least one of the LEDs; and the reflective surface is configured to direct the light emitted by the at least one of the LEDs towards the first side and prevent the emitted light from escaping to a second side of the at least one reflector that is opposite the first side, wherein the optical axis of the at least one of the LEDs is displaced laterally from the central lens axis of the respective lenses in a direction towards the first end of the reflector to be located closer to the first end of the reflector than the central lens axis.

[00106] Example 22. The optical assembly of any of the preceding or subsequent examples or combination of examples, wherein: each of the lenses defines a cavity, and each of the LEDs sits within a respective of the cavities.

[00107] Example 23. The optical assembly of any of the preceding or following examples or combination of examples, wherein: the reflecting surface of the at least one reflector has at least one of a concave or parabolic shape.

[00108] Example 24. The optical assembly of any of the preceding or subsequent examples or combination of examples, wherein: each of the LEDs is aligned with a respective of the plurality of apertures.

[00109] Example 25. The optical assembly of any of the preceding or subsequent examples or combination of examples, wherein: the first base surface is configured to absorb at least 90% of the emitted light incident on the first surface.

[00110] Example 26. The optical assembly of any of the preceding or subsequent examples or combination of examples, wherein the first base surface comprises a light-absorbing material or coating.

[00111] Example 27. The optical assembly of any of the preceding or subsequent examples or combination of examples, wherein the reflector comprises a light-absorbing material or coating on one side of the reflector opposite the reflecting surface.

[00112] Example 28. The optical assembly of any of the preceding or subsequent examples or combinations thereof, wherein the reflecting surface is a curved surface characterized by at least one of: a first angle between a first line and a base plane, the first line joining a distal end of a lens further laterally from the first end of the reflector and the second end of the reflector located above the lens; and a second angle between a second line and the base plane, the second line joining a point on the lens located on the optical axis of the LED and the second end of the reflector located above the lens.

[00113] Example 29. The optical assembly of any of the preceding or subsequent examples or combinations of examples, wherein the first angle is in a range between 60° and 90°.

[00114] Example 30. The optical assembly of any of the preceding or subsequent examples or combinations of examples, wherein the second angle is in a range between 70° and 130°.

[00115] Example 31. The optical assembly of any of the preceding or subsequent examples or combination of examples, wherein: the reflecting surface comprises one or more linear segments.

[00116] Example 32. The optical assembly of any of the preceding or following examples or a combination of OQQQcn / cznz / a / υιλι examples, where the plurality of lenses is attached to the base with adhesive, and where the second surface of the base defines channels for the adhesive.

[00117] Example 33. The optical assembly of any of the preceding or subsequent examples or combination of examples, wherein: each of the lenses comprises a dome extending through a respective plurality of apertures; and the dome is asymmetrical along at least one axis that is parallel to the base.

[00118] Example 34. The optical assembly of any of the preceding or subsequent examples or combination of examples, wherein the second base surface defines at least one recess and wherein the plurality of lenses sits within the at least one recess.

[00119] Example 35. The optical assembly of any of the preceding or following examples or combinations thereof, wherein: the at least one recess comprises a first recess and a second recess extending parallel to each other; the plurality of lenses comprises a first row of lenses and a second row of lenses; the first row of lenses is disposed within the first recess; and the second row of lenses is disposed within the second recess.

[00120] Example 36. The optical assembly of any of the preceding or subsequent examples or combination of examples, wherein: the plurality of LEDs is provided on a substrate; and the plurality of lenses is interposed between the substrate and the base.

[00121] Example 37. The optical assembly of any of the preceding or following examples or the combination of examples, wherein: each of the lenses comprises a first side closer to the at least one reflector and a second side opposite the first side; and each of the LEDs is arranged closer to the first side than the second side of a respective lens of the plurality of lenses.

[00122] Example 38. An optical assembly comprising: a plurality of lenses, each lens having a central lens axis; a plurality of light-emitting diodes (LEDs), each LED oriented to emit light in a respective lens of the plurality of lenses, each LED having an optical axis; and at least one reflector disposed adjacent to at least one of the LEDs such that the at least one LED is located on a first side of the at least one reflector, wherein: the at least one reflector has a reflective surface extending over the at least one LED and beyond the optical axis;and the optical axis of at least one of the LEDs is displaced laterally from the central lens axis of the respective lenses in a direction towards the at least one reflector to be located closer to the at least one reflector than the central lens axis, wherein the LEDs are configured to emit light from the optical assembly and wherein the optical assembly is configured to direct at least 95% of the emitted light in a first direction with respect to a light-cutting plane (1) extending through the optical axis of one or more of the plurality of LEDs located within the optical assembly at a location more distal to the first direction and (2) extending parallel to the optical axis and perpendicular to the first direction.

[00123] Example 39. The optical assembly of any of the preceding or subsequent examples or combination of examples, further comprising: a base defining a plurality of apertures, wherein each of the lenses extends through a respective one of the plurality of apertures to be visible on a first surface of the base.

[00124] Example 40. The optical assembly of any of the preceding or following examples or a combination of OQQQcn / cznz / a / uili examples, where: the plurality of led is provided on a substrate; and the substrate is configured to absorb at least 90% of the light incident on the substrate.

[00125] Example 41. The optical assembly of any of the preceding or subsequent examples or combination of examples, wherein: the reflecting surface comprises a curved surface.

[00126] Example 42. The optical assembly of any of the preceding or subsequent examples or combination of examples, further comprising: a base, wherein the at least one reflector is coupled to the base.

[00127] Example 43. The optical assembly of any of the preceding or following examples or combinations thereof, wherein: the plurality of lenses is arranged in a plurality of rows; the at least one reflector comprises a plurality of reflectors; and at least one of the plurality of reflectors extends between adjacent rows of the plurality of rows of lenses.

[00128] Example 44. An optical assembly comprising: a plurality of lenses, each lens having a dome-shaped portion and a central lens axis; a plurality of light-emitting diodes (LEDs), each LED oriented to emit light in a respective lens of the plurality of lenses and each LED having an optical axis;and at least one reflector disposed adjacent to at least one of the LEDs such that the at least one of the LEDs is located on a first side of the at least one reflector, wherein the at least one reflector has a reflective surface extending over the at least one of the LEDs and beyond the optical axis of the at least one of the LEDs, and wherein the optical axis of the at least one of the LEDs is displaced laterally from the central lens axis of the respective lenses in a direction towards the at least one reflector to be located closer to the at least one reflector than the central lens axis, wherein the optical assembly comprises a surface from which the dome-shaped portions of the plurality of lenses extend, and wherein the surface is configured to absorb at least 90% of the light incident on the surface.

[00129] Example 45. The optical assembly of any of the preceding or subsequent examples or combination of examples, wherein the surface comprises a light-absorbing material or coating.

[00130] Example 46. The optical assembly of any of the preceding or subsequent examples or combination of examples, wherein: the plurality of LEDs is provided on a substrate comprising the surface.

[00131] Example 47. The optical assembly of any of the preceding or subsequent examples or combination of examples, wherein: the plurality of lenses is coupled to a base and the base comprises the surface.

[00132] Example 48. A luminaire configured to illuminate a selected area, the luminaire comprising: an optical assembly comprising: a base comprising a first surface, a second surface opposite the first surface, and a plurality of apertures extending through the base from the first surface to the second surface; a plurality of lenses coupled to the base, each lens having a central lens axis perpendicular to a plane of the base, wherein each lens is attached to the second surface of the base and extends at least partially through a respective one of the plurality of apertures to be at least partially exposed on the first surface of the base; a plurality of light-emitting diodes (LEDs), each LED positioned to emit light in a respective lens of the plurality of lenses, each LED having an optical axis;and at least one reflector arranged adjacent to at least one of the LEDs so that at least one of them; OQQQcn / cznz / a / uili led is located on a first side of at least one reflector, wherein: the at least one reflector comprises a first end close to the base, a second end opposite the first end, and a reflective surface extending at least partially between the first end and the second end, the reflector extending from the base over at least one of the leds such that the second end of the reflector extends beyond the optical axis of that at least one of the leds;and the reflective surface is configured to direct the light emitted by at least one of the LEDs towards the first side and prevent the emitted light from escaping to a second side of the at least one reflector that is opposite the first side, wherein the optical axis of at least one of the LEDs is displaced laterally from the central axis of the lens of the respective lens in a direction towards the first end of the reflector to be located closer to the first end of the reflector than the central axis of the lens; and a frame receiving the optical assembly, the frame being oriented such that the at least one reflector directs the light from at least one of the LEDs towards the selected area and prevents the light from escaping in a direction away from the selected area.

[00133] Example 49. The luminaire of any of the preceding examples or combination of examples, wherein the reflecting surface is a curved surface of the reflector, the curved surface comprising at least one of: a concave shape; a parabolic shape extending from the base to and beyond the optical axis of one of the plurality of LEDs; or a freeform shape characterized by multiple curvatures between end points of the curved surface, a first end point being at the base and a second end point being positioned above at least some of the plurality of lenses.

[00134] Example 50. An optical assembly comprising: a base comprising a first surface; a plurality of lenses provided on the first surface of the base, each lens having a dome shape having a central axis perpendicular to a plane of the base; a plurality of light-emitting diodes (LEDs), each LED positioned to emit light in a respective lens of the plurality of lenses, each LED having a central axis perpendicular to a plane of the LED, the central axis of an LED being offset from the central axis of the respective lens of the plurality of lenses;and at least one reflector extending from the base and having a curved surface, the at least one reflector being arranged adjacent to at least one of the plurality of LEDs such that the at least one of the plurality of LEDs is located on a first side of the at least one reflector, the curved surface extending from the base and curving over the at least one of the plurality of LEDs and beyond the central axis of the at least one of the plurality of LEDs, the curved surface being configured to direct the light emitted by the at least one of the plurality of LEDs towards the first side and prevent the emitted light from escaping to a second side of the at least one reflector that is opposite the first side.

[00135] Example 51. The optical assembly of any of the preceding or following examples or combinations thereof, wherein each lens of the plurality of lenses defines a cavity, and each LED of the plurality of LEDs is disposed in the cavity of the respective lens such that the central axis of the LED is displaced with respect to a central axis of the respective lens in a direction toward the curved surface of at least one reflector.

[00136] Example 52. The optical assembly of any of the preceding or following examples or combinations thereof, wherein the curved surface of the reflector has at least one of: a concave shape; a parabolic shape extending from the base to and beyond the central axis of at least one of the plurality of LEDs; or a free shape OQQQcn / cznz / a / uli characterized by multiple curvatures between endpoints of the curved surface, a first endpoint located at the base and a second endpoint placed above at least some of the plurality of lenses.

[00137] Example 53. The optical assembly of any of the preceding or subsequent examples or combinations of examples, wherein the freeform comprises: a first curvature between the first endpoint at the base and an intermediate point between the first endpoint and the second endpoint; and a second curvature between the intermediate point and the second endpoint of the curved surface.

[00138] Example 54. The optical assembly of any of the preceding or subsequent examples or combinations thereof, wherein the curved surface of the reflector is characterized by at least one of: a first angle between a first line and a plane of the base, the first line joining a distal end of a lens further laterally from the reflector at the base and a distal end of the reflector located above the lens, and a second angle between a second line and the plane of the base, the second line joining a point on the lens located on the central axis of the LED and the distal end of the reflector located above the lens.

[00139] Example 55. The optical assembly of any of the preceding or subsequent examples or combinations of examples, wherein the first angle is in a range between 60° and 90° or wherein the second angle is in a range between 70° and 130°.

[00140] Example 56. The optical assembly of any of the preceding or subsequent examples or combinations thereof, wherein the first base surface is configured to absorb at least 90% of the emitted light incident on the first surface.

[00141] Example 57. The optical assembly of any of the preceding or subsequent examples or combination of examples, wherein the first base surface comprises a light-absorbing material or coating.

[00142] Example 58. The optical assembly of any of the preceding or subsequent examples or the combination of examples, wherein the base further comprises a second surface opposite the first surface and a plurality of apertures extending through the base from the first surface to the second surface, wherein each of the plurality of lenses extends at least partially through a respective one of the plurality of apertures to be provided on the first surface of the base.

[00143] Example 59. The optical assembly of any of the preceding or subsequent examples or combination of examples, wherein the plurality of lenses is attached to the base with an adhesive.

[00144] Example 60. The optical assembly of any of the preceding or subsequent examples or combinations thereof, wherein: the plurality of lenses comprises a first plurality of lenses arranged in a first row and a second plurality of lenses arranged in a second row; and the plurality of LEDs comprises a first plurality of LEDs arranged in the first plurality of lenses and a second plurality of LEDs arranged in the second plurality of lenses.

[00145] Example 61. The optical assembly of any of the preceding or following examples or combinations thereof, wherein the at least one reflector comprises: a first reflector disposed close to the first plurality of lenses such that a curved surface of the first reflector extends over the first plurality of lenses; and a OQQQcn / cznz / a / υιλι second reflector arranged between the first plurality of lenses and the second plurality of lenses so that a curved surface of the second reflector extends over the second plurality of lenses.

[00146] Example 62. The optical assembly of any of the preceding or subsequent examples or combinations of examples, wherein the at least one reflector extends along a single lens of the plurality of lenses.

[00147] Example 63. The optical assembly of any of the preceding or subsequent examples or combinations thereof, wherein: the at least one reflector has an angular shape comprising a first curved surface portion, a second curved surface portion disposed at an angle to the first curved surface portion, and a corner portion between the first curved surface portion and the second curved surface portion, the corner portion having a curved surface extending along multiple axes; The curved surface of the corner portion of at least one reflector curves between the first curved surface portion and the second curved surface portion, and also curves in a plane perpendicular to the base; and a lens of the plurality of lenses is located at the corner so that the curved surface of the corner portion curves at least partially over the lens.

[00148] Example 64. A luminaire configured to illuminate a selected area and comprising: the optical assembly of any preceding claim; and a frame supporting the optical assembly, the frame being oriented so that the curved surface of at least one reflector curves towards the selected area to direct the light from at least one of the plurality of LEDs towards the selected area and prevent light from escaping in a direction away from the selected area.

[00149] Different arrangements of the components shown in the drawings or described above are possible, as are components and steps not shown or described. Similarly, some features and subcombinations are useful and can be employed without reference to other features and subcombinations.

[00150] While certain embodiments have been described, these embodiments are presented only by way of example and are not intended to limit the scope of these disclosures. In fact, the novel methods, apparatus, and systems described herein may be realized in a variety of other forms; furthermore, various omissions, substitutions, and changes in the form of the methods, apparatus, and systems described herein may be made without departing from the spirit of these disclosures. It is intended that the appended claims and their equivalents cover such forms or modifications that would fall within the scope and spirit of these disclosures.

Claims

1. An optical assembly comprising: a base; a plurality of lenses arranged in the base and separated from each other in a row, each lens having a dome shape having a central axis perpendicular to a plane of the base; a plurality of light-emitting diodes (LEDs), each LED being arranged between the base and a respective lens of the plurality of lenses, each LED having a central axis perpendicular to a plane of the LED, the central axis of an LED being offset from the central axis of the respective lens of the plurality of lenses;and at least one reflector having a curved surface, the at least one reflector being arranged adjacent to at least one of the plurality of LEDs such that the at least one of the plurality of LEDs is located on a first side of the at least one reflector, the curved surface extending from the base and curving over the at least one of the plurality of LEDs and beyond the central axis of each of the at least one of the plurality of LEDs, the curved surface being configured to direct the light emitted by the at least one of the plurality of LEDs towards the first side and prevent the light from escaping to a second side of the at least one reflector that is opposite the first side.

2. The optical assembly according to claim 1, wherein each lens of the plurality of lenses defines a cavity, and each LED of the plurality of LEDs is arranged in a respective cavity such that the central axis of the LED is displaced with respect to a central axis of the respective lens in a direction of the curved surface of the at least one reflector.

3. The optical assembly according to claim 1, wherein the curved surface of the reflector has a concave shape.

4. The optical assembly according to claim 1, wherein the curved surface of the reflector has a parabolic shape extending from the base towards and beyond the central axis of the LED plurality.

5. The optical assembly according to claim 1, wherein the curved surface of the reflector has a freeform shape characterized by multiple curvatures between end points of the curved surface, a first end point located at the base and a second end point positioned above at least some of the plurality of lenses.

6. The optical assembly according to claim 5, wherein the freeform comprises: a first curvature between the first end point at the base and an intermediate point between the first end point and the second end point; and a second curvature between the intermediate point and the second end point of the curved surface.

7. The optical assembly according to claim 1, wherein the reflector is an elongated member having a reflective coating on the curved surface.

8. The optical assembly according to claim 1, wherein the curved surface of the reflector is characterized by at least one of: a first angle between a first line and a base plane, the first line joining a distal end of a lens farther from the curved surface and a distal end of the curved surface located on the lens, and a second angle between a second line and the base plane, the second line joining a point on the lens located on the central axis of the LED and the distal end of the curved surface located on the lens.

9. The optical assembly according to claim 8, wherein the first angle is in a range between 60° and 90°.

10. The optical assembly according to claim 8, wherein the second angle is in a range between 70° and 130°.

11. The optical assembly according to claim 1, wherein the base comprises light-absorbing material or coating.

12. The optical assembly according to claim 1, wherein the plurality of lenses is attached to the base by means of an adhesive.

13. The optical assembly according to claim 1, wherein: the plurality of lenses comprises: a first plurality of lenses arranged in a first row; and a second plurality of lenses arranged in a second row; the plurality of LEDs comprises: a first plurality of LEDs arranged in the first plurality of lenses; and a second plurality of LEDs arranged in the second plurality of lenses.

14. The optical assembly according to claim 13, wherein the at least one reflector comprises: a first reflector disposed close to the first plurality of lenses on an opposite side of the second plurality of lenses such that a curved surface of the first reflector extends over the first plurality of lenses; and a second reflector disposed between the first plurality of lenses and the second plurality of lenses such that a curved surface of the second reflector extends over the second plurality of lenses.

15. The optical assembly according to claim 1, wherein the at least one reflector extends along a single lens of the plurality of lenses.

16. The optical assembly according to claim 1, wherein the at least one reflector has an angular shape comprising a first curved surface portion, a second curved surface portion disposed at an angle to the first curved surface portion, and a corner portion between the first curved surface portion and the second curved surface portion, the corner portion having a curved surface extending along multiple axes.

17. The optical assembly according to claim 16, wherein the curved surface of the corner portion of the at least one reflector is curved between the first curved surface portion and the second curved surface portion, and is also curved in a plane perpendicular to the base.

18. The optical assembly according to claim 17, wherein one lens of the plurality of lenses is located at the corner such that the curved surface of the corner portion curves at least partially over the lens.

19. A luminaire configured to illuminate a selected area, the luminaire comprising: a base; a plurality of lenses arranged in the base and separated from each other in a row, each lens having a dome shape having a central axis perpendicular to a plane of the base; a plurality of light-emitting diodes (LEDs) arranged between the base and a respective lens of the plurality of lenses, each LED having a central axis perpendicular to a plane of the LED, the central axis of an LED being offset from the central axis of a respective lens of the plurality of lenses;at least one reflector having a curved surface, the at least one reflector being arranged close to at least one of the plurality of LEDs such that the at least one of the plurality of LEDs is located on a first side of the at least one reflector, the curved surface extending from a surface of the base and curving over the at least one of the plurality of LEDs and beyond the central axis of each of the at least one of the plurality of LEDs, the curved surface being configured to direct the light emitted by the at least one of the plurality of LEDs towards the first side and prevent the light from escaping to a second side of the at least one reflector that is opposite the first side;and a frame supporting the base and at least one reflector, the frame being oriented so that the curved surface of the at least one reflector curves towards the selected area to direct the light from at least one of the plurality of LEDs towards a selected area and prevent light from escaping in a direction away from the selected area.

20. The luminaire according to claim 19, wherein the curved surface of the reflector has at least one of: a concave shape; a parabolic shape extending from the base to and beyond the central axis of the plurality of LEDs; or a freeform shape characterized by multiple curvatures between end points of the curved surface, a first end point being at the base and a second end point being positioned above at least some of the plurality of lenses.

21. An optical assembly comprising: a base comprising a first surface, a second surface opposite the first surface, and a plurality of apertures extending through the base from the first surface to the second surface; a plurality of lenses coupled to the base, each lens having a central lens axis perpendicular to a plane of the base, wherein each lens is attached to the second surface of the base and extends at least partially through a respective one of the plurality of apertures to be at least partially exposed on the first surface of the base; a plurality of light-emitting diodes (LEDs), each LED positioned to emit light in a respective lens of the plurality of lenses, each LED having an optical axis;and at least one reflector disposed adjacent to at least one of the LEDs such that the at least one of the LEDs is located on a first side of the at least one reflector, wherein: the at least one reflector comprises a first end close to the base, a second end opposite the first end, and a reflective surface extending at least partially between the first end and the second end, the reflector extending from the base over the at least one of the LEDs such that the second end of the reflector extends beyond the optical axis of that at least one of the LEDs;and the reflective surface is configured to direct the light emitted by at least one of the LEDs towards the first side and prevent the emitted light from escaping to a second side of the at least one reflector that is opposite the first side, wherein the optical axis of at least one of the LEDs is displaced laterally from the central lens axis of the respective lenses in a direction towards the first end of the reflector to be located closer to the first end of the reflector than the central lens axis.

22. The optical assembly according to claim 21, wherein: each of the lenses defines a cavity, and each of the LEDs sits within a respective cavity.

23. The optical assembly according to claim 21, wherein: the reflective surface of the at least one reflector has at least one of a concave or parabolic shape.

24. The optical assembly according to claim 21, wherein: each of the LEDs is aligned with a respective one of the plurality of apertures.

25. The optical assembly according to claim 21, wherein: the first base surface is configured to absorb at least 90% of the emitted light incident on the first surface.

26. The optical assembly according to claim 25, wherein the first base surface comprises a light-absorbing material or coating.

27. The optical assembly according to claim 21, wherein the reflector comprises a light-absorbing material or coating on one side of the reflector opposite the reflecting surface.

28. The optical assembly according to claim 21, wherein the reflective surface is a curved surface characterized by at least one of: a first angle between a first line and a base plane, the first line joining a distal end of a lens further laterally from the first end of the reflector and the second end of the reflector located on the lens; and a second angle between a second line and the base plane, the second line joining a point on the lens located on the optical axis of the LED and the second end of the reflector located on the lens.

29. The optical assembly according to claim 28, wherein the first angle is in a range between 60° and 90°.

30. The optical assembly according to claim 28, wherein the second angle is in a range between 70° and 130°.

31. The optical assembly according to claim 21, wherein: the reflective surface comprises one or more linear segments.

32. The optical assembly according to claim 21, wherein the plurality of lenses is attached to the OQQQcn / cznz / a / uli base with adhesive, and wherein the second surface of the base defines channels for the adhesive.

33. The optical assembly according to claim 21, wherein: each of the lenses comprises a dome extending through a respective plurality of apertures; and the dome is asymmetrical along at least one axis that is parallel to the base.

34. The optical assembly according to claim 21, wherein the second surface of the base defines at least one recess and wherein the plurality of lenses is seated within the at least one recess.

35. The optical assembly according to claim 34, wherein: the at least one recess comprises a first recess and a second recess extending parallel to each other; the plurality of lenses comprises a first row of lenses and a second row of lenses; the first row of lenses is disposed within the first recess; and the second row of lenses is placed within the second recess.

36. The optical assembly according to claim 21, wherein: the plurality of LEDs is provided on a substrate; and the plurality of lenses is interposed between the substrate and the base.

37. The optical assembly according to claim 36, wherein: each of the lenses comprises a first side closer to at least one reflector and a second side opposite the first side; each of the LEDs is arranged closer to the first side than the second side of a respective lens of the plurality of lenses.

38. An optical assembly comprising: a plurality of lenses, each lens having a central lens axis; a plurality of light-emitting diodes (LEDs), each LED oriented to emit light in a respective lens of the plurality of lenses, each LED having an optical axis; and at least one reflector disposed adjacent to at least one of the LEDs such that the at least one LED is located on a first side of the at least one reflector, wherein: the at least one reflector has a reflective surface extending over the at least one LED and beyond the optical axis;and the optical axis of at least one of the LEDs is displaced laterally from the central lens axis of the respective lenses in a direction towards the at least one reflector to be located closer to the at least one reflector than the central lens axis, wherein the LEDs are configured to emit light from the optical assembly and wherein the optical assembly is configured to direct at least 95% of the emitted light in a first direction with respect to a light-cutting plane (1) extending through the optical axis of one or more of the plurality of LEDs located within the optical assembly at a location more distal to the first direction and (2) extending parallel to the optical axis and perpendicular to the first direction.

39. The optical assembly according to claim 38, further comprising: a base defining a plurality of apertures, wherein each of the lenses extends through a respective one of the plurality of apertures to be visible on a first surface of the base.

40. The optical assembly according to claim 39, wherein: the plurality of LEDs is provided on a substrate; and the substrate is configured to absorb at least 90% of the light incident on the substrate.

41. The optical assembly according to claim 38, wherein: the reflective surface comprises a curved surface.

42. The optical assembly according to claim 38, further comprising: a base, wherein the at least one reflector is coupled to the base.

43. The optical assembly according to claim 38, wherein: the plurality of lenses is arranged in a plurality of rows; the at least one reflector comprises a plurality of reflectors; and at least one of the plurality of reflectors extends between adjacent rows of the plurality of rows of lenses.

44. An optical assembly comprising: a plurality of lenses, each lens having a dome-shaped portion and a central lens axis; a plurality of light-emitting diodes (LEDs), each LED oriented to emit light in a respective lens of the plurality of lenses and each LED having an optical axis;and at least one reflector disposed adjacent to at least one of the LEDs such that the at least one of the LEDs is located on a first side of the at least one reflector, wherein the at least one reflector has a reflective surface extending over the at least one of the LEDs and beyond the optical axis of the at least one of the LEDs, and wherein the optical axis of the at least one of the LEDs is displaced laterally from the central lens axis of the respective lenses in a direction towards the at least one reflector to be located closer to the at least one reflector than the central lens axis, wherein the optical assembly comprises a surface from which the dome-shaped portions of the plurality of lenses extend, and wherein the surface is configured to absorb at least 90% of the light incident on the surface.

45. The optical assembly according to claim 44, wherein the surface comprises a light-absorbing material or coating.

46. ​​The optical assembly according to claim 44, wherein: the plurality of LEDs is provided on a substrate comprising the surface.

47. The optical assembly according to claim 44, wherein: the plurality of lenses is coupled to a base and the base comprises the surface. OQQQcn / cznz / a / υιλι 48. A luminaire configured to illuminate a selected area, the luminaire comprising: an optical assembly comprising: a base comprising a first surface, a second surface opposite the first surface, and a plurality of apertures extending through the base from the first surface to the second surface; a plurality of lenses coupled to the base, each lens having a central lens axis perpendicular to a plane of the base, wherein each lens is attached to the second surface of the base and extends at least partially through a respective one of the plurality of apertures to be at least partially exposed on the first surface of the base; a plurality of light-emitting diodes (LEDs), each LED positioned to emit light in a respective lens of the plurality of lenses, each LED having an optical axis;and at least one reflector arranged adjacent to at least one of the LEDs such that the at least one of the LEDs is located on a first side of the at least one reflector, wherein: the at least one reflector comprises a first end close to the base, a second end opposite the first end, and a reflective surface extending at least partially between the first end and the second end, the reflector extending from the base over the at least one of the LEDs such that the second end of the reflector extends beyond the optical axis of that at least one of the LEDs;and the reflective surface is configured to direct the light emitted by at least one of the LEDs towards the first side and prevent the emitted light from escaping to a second side of the at least one reflector that is opposite the first side, wherein the optical axis of at least one of the LEDs is displaced laterally from the central lens axis of the respective lens in a direction towards the first end of the reflector to be located closer to the first end of the reflector than the central axis of; and a frame receiving the optical assembly, the frame being oriented such that the at least one reflector directs the light from at least one of the LEDs towards the selected area and prevents the light from escaping in a direction away from the selected area.

49. The luminaire according to claim 48, wherein the reflecting surface is a curved reflector surface, the curved surface comprising at least one of: a concave shape; a parabolic shape extending from the base to and beyond the optical axis of one of the plurality of LEDs; or a freeform shape characterized by multiple curvatures between end points of the curved surface, a first end point being at the base and a second end point being positioned above at least some of the plurality of lenses.

Images