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JP-2026075526-A - Lighting fixtures

JP2026075526AJP 2026075526 AJP2026075526 AJP 2026075526AJP-2026075526-A

Abstract

[Problem] The problem addressed by this disclosure is to reduce light loss. [Solution] The lighting fixture 1 comprises a light source 10, a pair of optical elements, and an operating unit 40. The pair of optical elements are arranged along the optical axis of the light source 10 and have a refraction effect that refracts the light emitted from the light source 10. The operating unit 40 adjusts the rotation of the pair of optical elements, which are configured to rotate around a rotation axis. The pair of optical elements change the direction in which they refract the light emitted from the light source 10 in response to the operation of the operating unit 40. Of the pair of optical elements, the optical element 20, which is positioned closer to the light source 10, further has a focusing effect that concentrates the light emitted from the light source 10. [Selection Diagram] Figure 5

Inventors

  • 阿南 真一

Assignees

  • パナソニックＩＰマネジメント株式会社

Dates

Publication Date
20260508
Application Date
20241022

Claims (7)

  1. Light source and A pair of optical elements arranged along the optical axis of the light source and having a refractive action that refracts light emitted from the light source, It comprises an operating unit for adjusting the rotation of the pair of optical elements that are configured to be rotatable about a rotation axis, The pair of optical elements change the direction in which they refract light in response to the operation of the control unit. Of the pair of optical elements, the optical element positioned closer to the light source further has a light-gathering function that concentrates the light. Lighting fixtures.
  2. The optical element has a rotationally symmetric shape about the axis of symmetry, The axis of symmetry and the optical axis do not coincide. The lighting fixture according to claim 1.
  3. The rotation axis and the optical axis coincide. The lighting fixture according to claim 2.
  4. The optical element has a rotationally asymmetric shape. The lighting fixture according to claim 1.
  5. The operating unit rotates each of the pair of optical elements by the same amount in opposite directions around the rotation axis. A lighting fixture according to any one of claims 1 to 4.
  6. The system further includes a positioning unit for moving the optical element along the optical axis. A lighting fixture according to any one of claims 1 to 4.
  7. The pair of optical elements have the same refractive effect. A lighting fixture according to any one of claims 1 to 4.

Description

This disclosure relates to lighting fixtures in general, and more particularly to lighting fixtures in which the optical axis of the emitted light can be changed. The lighting fixture described in Patent Document 1 comprises a flat, plate-shaped planar light source having a light-emitting surface; a flat, plate-shaped first prism panel and a second prism panel, each having a light-emitting surface that changes the direction of light emitted from the planar light source; a substantially circular first support frame and a second support frame that support the first and second prism panels by covering their entire circumferences; and a fixture body formed in a bottomed cylindrical shape with an open bottom, housing the planar light source, the first prism panel, the second prism panel, the first support frame, and the second support frame. Each prism panel can be rotated independently of each other by manually rotating each support frame. Japanese Patent Publication No. 2009-054322 Figure 1 is an exploded perspective view of the lighting fixture according to this embodiment.Figure 2 is an exploded perspective view of the lighting device provided by the same lighting fixture.Figure 3 is a cross-sectional view of the same lighting fixture.Figure 4 is a side view showing a part of the second optical element of the same lighting fixture.Figure 5 is a block diagram showing the configuration of the lighting fixture described above.Figure 6 is a side view of the pair of optical elements and the first rotary control unit of the same lighting fixture.Figure 7 is a schematic diagram illustrating the principle of light refraction by a pair of optical elements in the same lighting fixture.Figure 8 is a schematic diagram illustrating the principle of light refraction by a pair of optical elements in the same lighting fixture.Figure 9 is a schematic diagram illustrating the principle of light refraction by a pair of optical elements in the lighting fixture of Modified Example 1.Figure 10 is a block diagram showing the configuration of the lighting fixture in modified example 5.Figure 11 is a side view showing a part of the second optical element of the lighting fixture of the modified example 6.Figure 12 is a side view showing a part of the second optical element of the lighting fixture of the modified example 7.Figure 13 is a side view showing a part of the second optical element of the lighting fixture of the modified example 8. The embodiments and modifications described below are merely examples of the present disclosure, and this disclosure is not limited to these embodiments and modifications. Various modifications are possible depending on the design, etc., as long as they do not depart from the technical idea of this disclosure, even if they are not described below. The lighting fixture 1 according to this embodiment will be described below with reference to the drawings. Note that the arrows indicating "up" and "down" in the drawings are for illustrative purposes only and do not represent any actual physical objects. (1) Overview As shown in Figures 1 to 3 and Figure 5, the lighting fixture 1 according to this embodiment comprises a light source 10, a pair of optical elements (first optical element 20 and second optical element 32), and an operating unit 40. The pair of optical elements are arranged along the optical axis Ax1 of the light source 10 and have a refractive effect that refracts the light emitted from the light source 10. The operating unit 40 adjusts the rotation of a pair of optical elements that are configured to rotate around a rotation axis. The pair of optical elements change the direction in which they refract the light emitted from the light source 10 in response to the operation of the control unit 40. Of the pair of optical elements, the optical element positioned closer to the light source 10 (the first optical element 20) further possesses a light-gathering function that concentrates the light emitted from the light source 10. Herein, the term "optical axis" as used in this disclosure refers to a hypothetical ray that represents the light beam passing through the entire system. For example, the optical axis Ax1 of the light source 10 coincides with the axis of rotational symmetry of the light emitted from the light source 10. Furthermore, the term "refractive effect" as used in this disclosure refers to the strength of the refraction of light incident on an optical element. That is, the stronger the refractive effect of an optical element, the greater the angle of refraction of the light emitted from the optical element relative to the angle of incidence of the light incident on the optical element. Furthermore, the term "light-gathering effect" as used in this disclosure refers to the strength of the light-gathering action of an optical element. That is, the stronger the light-gathering effect of an optical element, the smaller the beam angle of the light emitted from the optical element re