Optical layer and light fixture with such an optical layer

• Main Authors: Fernandez, Oscar, Dreyfus, Thierry, Ferrini, Rolando, Hochfilzer, Christian, Reutter, Kornelius
• Format: Patent
• Language: English
• Published: 07.10.2021
• Subjects: BLASTING; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; WEAPONS

An optical layer (1) made of a light-permeable material comprises a surface (13) and an optical micro-structure (11) having a plurality of elevations (111). The elevations (111) in the micro-structure (11) project from a reference plane (15) that is parallel to the surface (13). Each elevation (111) in the micro-structure (11) has a flank section (112) adjoining the reference plane (15), said flank section forming a uniform angle (α) with the reference plane (15). Said uniform angle (α) is in a range of approximately 10° to approximately 26° or in a range of approximately 13° to approximately 23° or in a range of approximately 15° to approximately 20°. The optical layer (1) according to the invention allows a light fixture to achieve a high light output rate (LOR) and at the same to produce a preferred light distribution curve (LVK).