Techniques and mechanisms for fabricating an eyepiece from a lens blank including blank bodies that are bonded to each other. In an embodiment, the blank bodies are formed by injection molding and adhered to one another. Fabrication of the eyepiece includes variously machining the blank bodies to shape respective lens bodies of the eyepiece. One or more blocking structures are coupled to reinforce the lens blank during at least part of such machining. In another embodiment, any blocking structures that are to resist forces of a particular machining process are coupled only indirectly to one of the blank bodies.

The present invention relates to a lens and a camera module comprising same. A lens according to one embodiment of the present invention comprises: an optical part constituting an optical surface of the lens; a flange part formed on the periphery of the optical part; a first cutting part formed on one side of the flange part; and a second cutting part formed on the other side of the flange part, wherein the first cutting part and the second cutting part may be formed to form angles which are perpendicular to each other with respect to the central axis of the optical part. Accordingly, it is possible to reduce a lens shape error which occurs when assembling a lens, and prevent a decrease in the resolution of the lens.

An imaging lens assembly includes a dual molded optical element, a plurality of imaging lens elements and a light blocking element. The dual molded optical element has an object-side surface and an image-side surface and includes a light transmitting portion and a light absorbing portion. The light transmitting portion includes an optical effective section. The light absorbing portion is located on at least one of the object-side surface and the image-side surface of the dual molded optical element, and a plastic material of the light absorbing portion and a plastic material of the light transmitting portion are different colors. The imaging lens elements are disposed in the inner space of the imaging lens assembly. The light blocking element is disposed adjacent to the light transmitting portion of the dual molded optical element.

To form a multilayer plastic lens, a plurality of intermediate layers of a plastic material are injected one after another onto a basic part in an injection molding device in different cavities, wherein at least some of the cavities have a common first runner system with a common material feed. At least its [sic—“one”—“seine” is an obvious typo for “eine” meaning “one”—Tr.Ed.] outer layer consisting of a plastic material is then injected in a cavity by means of a second runner system, the second runner system having a material feed of its own and a control of its own.

Some embodiments provide a lens including a lens body and an optical filter configured to attenuate visible light in certain spectral bands. At least some of the spectral bands can include spectral features that tend to substantially increase the colorfulness, clarity, and/or vividness of a scene. In certain embodiments, eyewear incorporates an optical filter that enhances chroma within one or more spectral bands. In some embodiments, a wearer of the eyewear can perceive the increase in chroma when viewing at least certain types of scenes.

A vehicle lamp includes: a lamp body that has an opening in a direction of light radiation; a front cover that covers the opening to define a housing and includes, on an inner surface, an anti-fogging film mainly composed of a synthetic resin; a light source that is disposed in the housing; and a silicone resin part that is disposed in the housing. A content of D3 to D20 cyclic low molecular weight siloxanes in the silicone resin part is 0 ppm to 300 ppm in terms of mass.

A method of forming and implanting a synthetic corneal lenslet in an eye of a patient includes the steps of: forming a synthetic lenslet from a collagen solution using a mold or a 3-D printer that are configured to form the synthetic lenslet into a predetermined shape for correcting a particular refractive error of the patient; forming a cavity for receiving the synthetic lenslet in the cornea of the eye of the patient; inserting the synthetic lenslet into the cavity of the eye; applying a photosensitizer into the cavity of the eye so that the photosensitizer permeates at least a portion of the tissue surrounding the cavity and at least a portion of the synthetic lenslet; and irradiating the cornea so as to activate cross-linkers in the synthetic lenslet and cross-linkers in the portion of the tissue surrounding the cavity, and thereby prevent an immune response.

A lens array unit includes a lens array including a plurality of lenses, a first side plate, and a second side plate, the first side plate and the second side plate being configured to hold the plurality of lenses therebetween, and a frame made of resin and including a first supporting portion and a second supporting portion, the first supporting portion being in contact with an outside surface of the first side plate, the second supporting portion being in contact with an outside surface of the second side plate, the first supporting portion and the second supporting portion being configured to hold the lens array therebetween and support the lens array. The outside surface of the first side plate includes a plurality of first concave portions spaced from each other in an array direction of the lenses and configured to fit with the first supporting portion.

It is an object of the present invention to provide a light diffusing lens production apparatus which makes it possible to efficiently produce a high-quality light diffusing lens having enhanced optical properties.

The light diffusing lens production apparatus includes: a pair of molds 15, consisting of a fixed mold 16 and a movable mold 18, which forms a final molded product cavity 22 that defines the shape of a light diffusing lens 14; a mold clamping apparatus 62 in which the pair of molds 15 is attached; a transport device 66, having a chuck means capable of entering and exiting the space between the pair of molds 15 in an open state, which inserts a semifinished molded product 12 for the light diffusing lens 14 into the final molded product cavity 22; a heating device 68, having a heating means capable of entering and exiting the space between the pair of molds 15 in an open state, which heats the fixed mold 16-facing surface of the inserted semifinished molded product until the surface becomes a molten state; and an injection apparatus 64 which, after clamping of the pair of molds 15, injects a molding material into the final molded product cavity 22 so that the molding material covers the molten surface of the semifinished molded product 12.

A lens module (50) and a 3D printer (100) comprising same. The lens module comprises a first lens (L1), a second lens (L2) and a third lens (L3) sequentially and coaxially arranged in the transmission direction of incident light. The first lens, the second lens and the third lens are all meniscus lenses. The first lens comprises a first curved surface (S1) and a second curved surface (S2). The second lens comprises a third curved surface (S3) and a fourth curved surface (S4). The third lens comprises a fifth curved surface (S5) and a sixth curved surface (S6). The first to the sixth curved surfaces are sequentially arranged in the transmission direction of the incident light, and the curvature radii of the first to the sixth curved surfaces are sequentially −200±5%, −100±5%, −80±5%, −150±5%, −100±5% and −70±5% in a unit of millimeter. By means of the lens module, the printing efficiency of the 3D printer is high and it is convenient to carry out printing of ultra-large workpieces.