A body (10) is disclosed for obscuring a light source arrangement (3). The body comprises a surface (20) including a plurality of optically reflective relief structures (30, 30′, 30″), each relief structure comprising a first portion (31) and a second portion (33) adjacent to said first portion extending from said surface, wherein the first portion has a different optical reflectivity to the second portion and neighboring optically reflective relief structures are separated by an optically transparent medium contacting said neighboring optically reflective relief structures. Also disclosed is a luminaire comprising such a body and a method of manufacturing such a body.

A body (10) is disclosed for obscuring a light source arrangement (3). The body comprises a surface (20) including a plurality of optically reflective relief structures (30, 30′, 30″), each relief structure comprising a first portion (31) and a second portion (33) adjacent to said first portion extending from said surface, wherein the first portion has a different optical reflectivity to the second portion and neighboring optically reflective relief structures are separated by an optically transparent medium contacting said neighboring optically reflective relief structures. Also disclosed is a luminaire comprising such a body and a method of manufacturing such a body.

A polygonal rotary projection lamp has a base, a polygonal frame, a film set, a polygonal fixing frame, and an illumination set. The base has a disc configured to be driven to spin. The polygonal frame is mounted to the disc and has multiple bottom frame units. The film set is mounted to the polygonal frame and has multiple film units mounted to the polygonal frame and covering the multiple bottom frame units respectively. Each film unit is flat and has a pattern. The polygonal fixing frame is detachably mounted to the polygonal frame and has multiple top frame units respectively connected to the multiple bottom frame units to respectively fix the multiple film units. The illumination set is mounted within the base and emits light toward the polygonal frame. The light passes through each film unit with the pattern to project the pattern.

The present application relates to a panel structure for stamping of an integrally formed lamp panel. The panel structure for stamping of the integrally formed lamp panel at least includes a reflective film layer, an adhesion layer, a base material layer and a protective layer, wherein the reflective film layer is arranged on one surface of the base material layer through the adhesion layer, and the protective layer is arranged on the other surface of the base layer; the base material layer includes a metal layer, and a chemical treatment layer arranged on at least one surface of the metal layer, the base material layer can be integrally formed lamp panel with the reflective film layer. The present application has the following beneficial effects: the panel structure can be applied to stamping of the integrally formed lamp panel; the yield is increased and the production efficiency is improved.

The present application relates to a panel structure for stamping of an integrally formed lamp panel. The panel structure for stamping of the integrally formed lamp panel at least includes a reflective film layer, an adhesion layer, a base material layer and a protective layer, wherein the reflective film layer is arranged on one surface of the base material layer through the adhesion layer, and the protective layer is arranged on the other surface of the base layer; the base material layer includes a metal layer, and a chemical treatment layer arranged on at least one surface of the metal layer, the base material layer can be integrally formed lamp panel with the reflective film layer. The present application has the following beneficial effects: the panel structure can be applied to stamping of the integrally formed lamp panel; the yield is increased and the production efficiency is improved.

The invention provides a 3D printed object (210) and a method of manufacturing such an object (210) by means of fused deposition modelling. The method successively comprises the steps of (i) 3D printing a printable material (120) to create a layer stack (230) of printed material (210), wherein the layer stack (210) bounds a space (240), wherein the layer stack (210) has an inner stack surface (231) and an outer stack surface (232), the inner stack surface (231) facing towards the space (240) and the outer stack surface (232) facing away from the space (240), (ii) providing a heat shrink (250) onto the layer stack (230), wherein the heat shrink (250) has an inner heat shrink surface (251) and an outer heat shrink surface (252), the inner heat shrink surface (251) facing towards the outer stack surface (232) and the outer heat shrink surface (252) facing away from the outer stack surface (232), and (iii) applying heat to shrink (250) the heat shrink so that the inner heat shrink surface (251) is in physical contact with the outer stack surface (232) and the heat shrink (250) is conformal to the layer stack (230). The layer stack (230) is light transmissive, and the heat shrink (250) is arranged to provide an optical effect chosen from the group consisting of refraction, diffraction, reflection, diffusion and conversion. The 3D printed object (210) may be used as a component of a lighting device (600), such as a lampshade.

The invention provides a 3D printed object (210) and a method of manufacturing such an object (210) by means of fused deposition modelling. The method successively comprises the steps of (i) 3D printing a printable material (120) to create a layer stack (230) of printed material (210), wherein the layer stack (210) bounds a space (240), wherein the layer stack (210) has an inner stack surface (231) and an outer stack surface (232), the inner stack surface (231) facing towards the space (240) and the outer stack surface (232) facing away from the space (240), (ii) providing a heat shrink (250) onto the layer stack (230), wherein the heat shrink (250) has an inner heat shrink surface (251) and an outer heat shrink surface (252), the inner heat shrink surface (251) facing towards the outer stack surface (232) and the outer heat shrink surface (252) facing away from the outer stack surface (232), and (iii) applying heat to shrink (250) the heat shrink so that the inner heat shrink surface (251) is in physical contact with the outer stack surface (232) and the heat shrink (250) is conformal to the layer stack (230). The layer stack (230) is light transmissive, and the heat shrink (250) is arranged to provide an optical effect chosen from the group consisting of refraction, diffraction, reflection, diffusion and conversion. The 3D printed object (210) may be used as a component of a lighting device (600), such as a lampshade.

A method for 3D printing an object with at least one wall (2) having a first surface and a second, opposite surface, wherein the first surface is intended to serve as an optical functional surface, wherein the wall is formed by printing one track (16) on top of another track (17). An orientation of the object during printing is selected such that the wall has a tangent (or tangent surface) non-parallel to the z-axis, such that the first surface faces away from the x-y plane and the second surface faces the x-y plane. According to the invention, the 3D object is thus oriented during printing such that the first surface, intended to be used as an optical functional surface, faces away from the x-y plane, i.e. typically away from the support or platform on which the 3D object is printed upon. By ensuring this orientation during printing, the first surface becomes smoother than the second, opposite surface of the wall.

A method for 3D printing an object with at least one wall (2) having a first surface and a second, opposite surface, wherein the first surface is intended to serve as an optical functional surface, wherein the wall is formed by printing one track (16) on top of another track (17). An orientation of the object during printing is selected such that the wall has a tangent (or tangent surface) non-parallel to the z-axis, such that the first surface faces away from the x-y plane and the second surface faces the x-y plane. According to the invention, the 3D object is thus oriented during printing such that the first surface, intended to be used as an optical functional surface, faces away from the x-y plane, i.e. typically away from the support or platform on which the 3D object is printed upon. By ensuring this orientation during printing, the first surface becomes smoother than the second, opposite surface of the wall.

Laminated light-blocking decorative articles are prepared by applying an aqueous foamed opacifying composition to a decorative fabric, drying, laminating a non-woven fabric to the resulting dry foamed opacifying layer, and densifying that layer to have a thickness that is at least 20% less than before densifying. This operation can be carried out so that non-woven fabric, decorative fabric, and aqueous foamed opacifying composition are supplied in a single-pass, in-line operation to make any quantity of laminated light-blocking decorative article. The applied aqueous foamed opacifying composition has 35%-70% solids and a foam density of 0.1-0.5 g/cm.sup.3. It is composed of (a) porous particles, (b) a binder material, (c) two or more additives comprising at least one foaming surfactant and at least one foam stabilizer, (d) an aqueous medium, and (e) at least 0.0001 weight % of an opacifying colorant that absorbs electromagnetic radiation having a wavelength of 380-800 nm.