The illumination optic is a collimator lens having a solid monolithic structure that includes spaced-apart and longitudinally-extending side lobed segments laterally disposed around a central core section. Each lobed segment has a TIR inner peripheral surface extending from a rear side towards a front side of the collimator lens and has a light exit surface generally facing the front side. Also disclosed is an illumination device including the collimator lens and a diffusion lens that is coaxially positioned next to its front side to redirect light coming out of the light exit surfaces. The diffusion lens has spaced-apart outlying optical regions disposed around a central optical axis, at least one for each light exit surface, to be selectively positioned in or out of alignment with a corresponding one of the light exit surfaces depending on a relative angular position between the collimator lens and the diffusion lens.
G02B 1/04 - Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
Injection molding machine component parts, namely, mold inserts for manufacturing of textured lights Parts for automotive lighting of head lamps and tail lamps, namely, lamp casings, LED light assemblies for automobiles, light bulbs
(1) Injection molding machine component parts, namely, mold inserts for manufacturing of textured lights
(2) Parts for automotive lighting of head lamps and tail lamps, namely, lamp casings, LED light assemblies for automobiles, light bulbs
5.
Injection molding device for thick lenses and method of manufacturing
The multistep injection molding device is for manufacturing thick lenses for use with an illumination apparatus. The injection molding device includes two sets of mold core inserts forming mold cavities when the injection molding device is in a closed position. The lens core part is formed in a first injection shot station. The molded lens core part is then moved to a post-molding cooling station in which it is further cooled inside a corresponding mold cavity. Two outer lens parts are formed sequentially over the lens core part in second and third injection shot stations. A method of manufacturing a thick lens is also disclosed.
The injection molding apparatus is provided for making highly accurate optical parts having structured reflective or deflecting optical surfaces. The apparatus includes a removable mold insert made of two or more mold insert segments. The mold insert segments are juxtaposed at mating lateral planar surfaces to form a reversed structured surface. The mold insert segments also includes a gas venting circuit having conduits formed when the mold insert segments are juxtaposed. A cooling circuit is provided in the mold insert segments.
B29C 33/10 - SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING - Details thereof or accessories therefor with incorporated venting means
7.
INJECTION MOLDING DEVICE FOR THICK LENSES AND METHOD OF MANUFACTURING
The multistep injection molding device (210) is for manufacturing thick lenses (100) for use with an illumination apparatus. The injection molding device (210) includes two sets of mold core inserts (250, 252) forming mold cavities when the injection molding device (210) is in a closed position. The lens core part (120) is formed in a first injection shot station. The molded lens core part (120) is then moved to a post-molding cooling station in which it is further cooled inside a corresponding mold cavity. Two outer lens parts (122, 124) are formed sequentially over the lens core part (120) in second and third injection shot stations. A method of manufacturing a thick lens (100) is also disclosed.
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
The lens (100) is made by injection molding in a mold through the injection of molten plastic material in at least three injection shots using a multistep process. It includes a first outer lens part (122), a second outer lens part (124) and a lens core part (120) forming an interior of the lens (100). The lens core part (120) is embedded between the first and second outer lens parts (122, 124). The lens core part (120) is divided into at least two subparts (132) separated at least partially by at least one elongated slot (130) extending across the lens core part (120) between the first and second surfaces of the lens core part (120). The slot or slots (130) made through the lens core part (120) are filled and fused with the plastic material of the first outer lens part (122).
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
B29C 45/00 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
G02B 1/04 - Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
The injection molding apparatus (130) is provided for making highly accurate optical parts having structured reflective or deflecting optical surfaces. The apparatus (130) includes a removable mold insert (132) made of two or more mold insert segments (134a, 134b). The mold insert segments (134a, 134b) are juxtaposed at mating lateral planar surfaces (135) to form a reversed structured surface (136). The mold insert segments (134a, 134b) also includes a gas venting circuit having conduits (160, 162, 164) formed when the mold insert segments (134a, 34b) are juxtaposed. A cooling circuit is provided in the mold insert segments (134a, 134b).
The lens array assembly includes a lens array support made of a first molded plastic material exhibiting a volumetric shrinkage upon cooling, the lens array support having a plurality of spaced-apart apertures; and an array of lenses made of second molded plastic material exhibiting a volumetric shrinkage upon cooling, each lens corresponding to one of the apertures of the lens array support and having an actual position in the lens array support that is within a maximum tolerance of 0.20 mm compared to each lens design position.
G02B 1/04 - Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
G02B 7/02 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses
11.
THICK LENS MOLDED WITH EMBEDDED LAYERS OF THE SAME RESIN USING A TWO STEP INJECTION MOLDING PROCESS.
A thick injection molded lens with embedded layers of the same resin molded using a two step injection process is used in an illumination apparatus having a solid state light source such as an LED. A first layer of the molded Jens includes a first set of elongated baffles of material that are created by corresponding baffles in the mold cavity. The mold cavity baffles are oriented to help the flow of molten material in the cavity. The mold cavity baffles have surfaces that are collinear with the mold flow through a lateral gate. The first set of baffles in the first molded layer help the formation of an unfinished lens of almost equal thickness that contains a first optical surface that can be uniformly cooled in the mold. The first set of baffles in the unfinished lens help to overmold, in a second shot, the same material and to finish the lens. In the second shot, the finished lens further contains a second set of baffles and a second optical surface. The baffles in the mold cavity improve the cooling of the optical surfaces in each first and second shots, help to reduce the shrinkage of the lens, reduce the sink marks and reduce the formation of bubbles in the lens.
A multi-color vehicle lens having interconnected TIR reflecting prisms is molded using a first molten material to create a support and a second material to form clusters of TIR prisms linked by connector elements. The TIR prisms and the connector elements are molded at the same time by using the mold cavities for the connector elements as flow paths to the mold cavities shaped to form the TIR reflector prisms.
An optical system having a solid state light source, such as an LED of any spectrum, includes a lens that provides an output illumination pattern of uniform distribution over a remote and larger target. The lens does not have an axis of revolution. The lens has a generally non-circular outer shape in cross section and on top views, where the outer optical surfaces are angled one relative to another. The lens includes refractive and reflective active optical surfaces to split, direct and shape the incoming beam from the light source towards the target in the form of several angled beams of prescribed energies calculated as a function of the shape of the target and distance to the target. The lens has an inner primary and partially open optical cavity of a polygonal cross section facing the light source. This optical cavity has a number of refractive optical surfaces whose shape and number is determined by the number of and shape of the illumination beams generated in conjunction with the other surfaces of the lens. This novel optical system may include an array of white LEDs that generate the input illumination to an array of these lenses to insure the proper illumination level and uniformity at particular remote targets.
A moulding process to manufacture a moulded piece having multiple individual optical elements with the same or different dimensions. This is achieved by using a multicolour injection process as well as a multidrop injection manifold. In the first step, the optical elements are moulded without any junction between them. In the second step, a layer of plastic is moulded in order to join together all the optical elements to create a single piece. The moulded piece thus consists of two plastic injections with optical elements which is more easily adaptable to a variety of different designs for lights having two or more colors. New styles of optical elements, along with varied and original geometric arrangements can thus be imagined. Furthermore, signaling functions having by their regulations different colors can heretofore be placed within a same zone of glass.
A moulding process to manufacture a moulded piece having multiple individual optical elements with the same or different dimensions. This is achieved by using a multicolour injection process as well as a multidrop injection manifold. In the first step, the optical elements are moulded without any junction between them. In the second step, a layer of plastic is moulded in order to join together all the optical elements to create a single piece. The moulded piece thus consists of two plastic injections with optical elements which is more easily adaptable to a variety of different designs for lights having two or more colours. New styles of optical elements, along with varied and original geometric arrangements can thus be imagined. Furthermore, signalling functions having by their regulations different colours can heretofore be placed within a same zone of glass.
An injection process for forming a retroreflector on a matrix mold having a plurality of prisms that each define a cavity. The process includes the steps of a) injecting a first layer of plastic on the matrix mold for partially filling up each prism up to a predetermined uniform thickness so as to define a recessed portion corresponding with each cavity of the prisms; and b) injecting a second layer of plastic onto of the first layer, the second layer filling up the recessed portion defined in each cavity of the prisms so that second layer defines a flat portion on an exterior side of the second layer.
42 - Scientific, technological and industrial services, research and design
Goods & Services
Electroforms for use in manufacture of moulds for reflex reflectors. Consulting services relating to the design and production of moulds for reflex reflectors.
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) Electroformed tools for use in manufacture of moulds for reflex reflectors. (1) Consulting services relating to the design and production of moulds for reflex reflectors.
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) Electroformed tools for use in manufacture of moulds for reflex reflectors. (1) Consulting services relating to the design and production of moulds for reflex reflectors.
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) Electroformed tools for use in manufacture of moulds for reflex reflectors. (1) Consulting services relating to the design and production of moulds for reflex reflectors.
