Primary optical structure

Abstract

The utility model discloses a primary optical structure which comprises a plurality of reflection units, the reflection units are arranged in an array mode, the reflection units are formed by scanning a contour line along a guide curve, the guide curve is provided with a first focus, the first focus is used for installing a light source, the contour line is composed of a first line segment and a second line segment, and the first line segment and the second line segment are arranged in parallel. The first line segment and the second line segment at least comprise part of straight line segments, an included angle is formed between the first line segment and the second line segment, and the included angle between the first line segment and the second line segment is 80-100 degrees.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle lamp lighting, and in particular relates to a primary optical structure. Background Art

[0002] When a reflector is used as the primary optical structure, if reflection is to be achieved through total internal reflection, there will always be some light that cannot be totally reflected but is emitted through refraction; because when the reflector is close to the light source, the incident angle of the light source is small, usually less than the critical angle of total reflection of the medium, so total reflection will not occur, resulting in part of the light not being effectively utilized and the optical efficiency being reduced. In order to improve the utilization rate of light, a primary optical structure is proposed. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art.

[0004] To this end, the utility model proposes a primary optical structure, which has the advantage of improving light utilization.

[0005] According to the primary optical structure of the embodiment of the utility model, it includes: a plurality of reflection units, the plurality of the reflection units are arranged in an array, the reflection units are formed by sweeping a contour line along a guide curve, the guide curve has a first focus, the first focus is used to install a light source, the contour line is composed of a first line segment and a second line segment, the first line segment and the second line segment at least include some straight line segments, an angle is formed between the first line segment and the second line segment, and the angle between the first line segment and the second line segment is 80°-100°.

[0006] According to an embodiment of the present invention, the angle between the first line segment and the second line segment of the reflection unit is 90°.

[0007] According to an embodiment of the present invention, the intersection of the first line segment and the second line segment is an arc segment.

[0008] According to an embodiment of the present invention, the guiding curve is elliptical, that is, the guiding curve also has a second focus, and the light emitted by the light source converges near the second focus after passing through the guiding curve.

[0009] According to an embodiment of the present invention, a plurality of the reflection units are arranged in an array along the normal direction of the plane where the guide curve is located.

[0010] According to an embodiment of the utility model, the plurality of reflective units are arranged in an array along a normal direction deviating from the plane where the guide curve is located. At this time, the angle between the arrangement direction of the plurality of reflective units and the light emitting direction is α, and the acute angle between the first line segment and the arrangement direction of the reflective unit is β.

[0011] According to an embodiment of the present invention, the included angles of the plurality of reflection units are different.

[0012] The beneficial effect of the utility model is that the utility model adopts a first line segment and a second line segment with an included angle of 80°-100° to sweep along a guide curve to form a reflection unit, so that the light emitted by the light source is fully reflected twice in the reflection unit. Therefore, even if the light is incident from a position close to the focal length of the reflection unit, total reflection can still be achieved, thereby improving the utilization rate of the light.

[0013] Other features and advantages of the present invention will be set forth in the following description, and in part will become apparent from the description, or may be understood by implementing the present invention.

[0014] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments of the present invention, in which:

[0016] Figure 1 It is a schematic diagram of the arrangement of multiple reflection units of the utility model;

[0017] Figure 2 This is a schematic diagram of a light beam with a 90-degree angle between the first line segment and the second line segment of the utility model;

[0018] Figure 3 It is a schematic diagram of a circular arc chamfer formed in the angle between the first line segment and the second line segment of the utility model;

[0019] Figure 4 This is a schematic diagram of the utility model showing that the guiding curve is an ellipse;

[0020] Figure 5 It is a schematic diagram of the arrangement of multiple reflective units of the utility model in the normal direction away from the plane where the guide curve is located;

[0021] Figure 6 This is a schematic diagram of the arrangement of different angle sizes of the utility model;

[0022] Reference numerals:

[0023] 1. Reflection unit; 11. Guide curve; 111. First focus; 112. Second focus; 121. First line segment; 122. Second line segment. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The primary optical structure of an embodiment of the present utility model is described in detail below with reference to the accompanying drawings.

[0028] like Figure 1-Figure 6 As shown, the primary optical structure according to the embodiment of the utility model includes: a plurality of reflection units 1, the plurality of reflection units 1 are arranged in an array, the reflection units 1 are formed by sweeping a contour line along a guide curve 11, in a vertical plane, the guide curve 11 has a first focus 111, the first focus 111 is used to install a light source, the contour line is composed of a first line segment 121 and a second line segment 122, the first line segment 121 and the second line segment 122 at least include some straight line segments, an angle is formed between the first line segment 121 and the second line segment 122, and the angle between the first line segment 121 and the second line segment 122 is 80°-100°.

[0029] In this embodiment, the first line segment 121 and the second line segment 122 are both straight lines, and the guide curve 11 can be a parabola, a hyperbola or other curves; the opening of the reflection unit 1 faces the light source, and the light emitted by the light source is totally reflected twice in the reflection unit 1. Therefore, even if the light is incident from a position close to the focal length of the reflection unit 1, that is, at a small incident angle, total reflection can still be achieved, thereby improving the utilization rate of the light.

[0030] The included angle between the first line segment 121 and the second line segment 122 of the reflective unit 1 is 90°, and the first line segment 121 and the second line segment 122 are symmetrical to each other along an axis passing through the coincidence point and parallel to the light emitting direction.

[0031] In this embodiment, compared with an angle of 90°, an angle of 80°-100° can improve light utilization while increasing the width of the irradiated light. Therefore, the angle between the first line segment 121 and the second line segment 122 can be set according to specific lighting requirements.

[0032] The intersection of the first line segment 121 and the second line segment 122 is an arc segment.

[0033] In the present embodiment, since the angle between the first line segment 121 and the second line segment 122 is 90 degrees, the light after total reflection by the reflection unit 1 is parallel light, which will cause the local light to be more concentrated, resulting in a lattice shape when multiple reflection units 1 emit light together, that is, multiple dark areas appear in the projected light type. By setting some arc segments, the uniformity of the light can be improved by changing the curvature of the arc segments, while the width of the irradiated light can be increased.

[0034] The guiding curve 11 is elliptical, that is, the guiding curve 11 also has a second focus 112 , and the light emitted by the light source converges near the second focus 112 after passing through the guiding curve 11 .

[0035] In this embodiment, the guide curve 11 has a first focus 111 and a second focus 112, so the light after being reflected by the reflection unit 1 converges near the second focus 112, so that the imaging system can be used later to project the image here. That is to say, the second focus 112 of multiple reflection units 1 forms a focal line, and the light after total reflection by multiple reflection units 1 converges near the focal line.

[0036] The plurality of reflection units 1 are arranged in an array along the normal direction of the plane where the guide curve 11 is located.

[0037] The multiple reflective units 1 are arranged in an array along the normal direction deviating from the plane where the guide curve 11 is located. At this time, the angle between the arrangement direction of the multiple reflective units 1 and the light emitting direction is α, and the acute angle between the first line segment 121 and the arrangement direction of the reflective units 1 is β. That is to say, when the angle between the first line segment 121 and the second line segment 122 is 90 degrees, It can be ensured that the light can still be fully utilized in this array direction. While improving the light utilization rate, the specific array arrangement direction of the multiple reflective units 1 can be selected according to the light output requirements, which improves the application flexibility of the multiple reflective units 1.

[0038] The included angles of the multiple reflective units 1 are different, that is, reflective units 1 with different angles can be selected and arranged according to light emission requirements, so that the reflective units 1 with different angles can be different or partially the same.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A primary optical structure, characterized in that: include: A plurality of reflection units (1), wherein the plurality of reflection units (1) are arranged in an array, wherein the reflection units (1) are formed by sweeping a contour line along a guide curve (11), wherein the guide curve (11) has a first focus (111), wherein the first focus (111) is used to install a light source, wherein the contour line is composed of a first line segment (121) and a second line segment (122), wherein the first line segment (121) and the second line segment (122) at least contain a portion of straight line segments, and wherein an angle is formed between the first line segment (121) and the second line segment (122), wherein the angle between the first line segment (121) and the second line segment (122) is 80°-100°.

2. The primary optical structure according to claim 1, characterized in that The angle between the first line segment (121) and the second line segment (122) of the reflection unit (1) is 90°.

3. The primary optical structure according to claim 2, characterized in that The intersection of the first line segment (121) and the second line segment (122) is an arc segment.

4. The primary optical structure according to claim 1, characterized in that The guiding curve (11) is elliptical, that is, the guiding curve (11) also has a second focus (112), and the light emitted by the light source converges near the second focus (112) after passing through the guiding curve (11).

5. The primary optical structure according to claim 1, characterized in that: The plurality of reflection units (1) are arranged in an array along the normal direction of the plane where the guide curve (11) is located.

6. The primary optical structure according to claim 1, characterized in that The plurality of reflective units (1) are arranged in an array along a normal direction deviating from the plane where the guide curve (11) is located, and at this time, the angle between the arrangement direction of the plurality of reflective units (1) and the light emitting direction is α, and the acute angle between the first line segment (121) and the arrangement direction of the reflective unit (1) is β.

7. The primary optical structure according to claim 1, characterized in that The included angles of the multiple reflection units (1) are different.

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