Abstract: A fixing assembly of reduced size, with a light-passing aperture for a lens holder and lens, includes a sidewall and an extending portion, the first sidewall is a ring-shaped structure, the extending portion is disposed on inner wall of the first sidewall, and the extending portion extends from an inner surface of the first sidewall. A top surface of the extending portion is recessed relative to a top surface of the first sidewall to form a groove. The lens is received in the groove and connected to the extending portion. The light-passing aperture is disposed on a surface of the lens away from the at least one extending portion, and the aperture is clamped with the lens holder.

Abstract: An information handling system includes a memory and a processor. The memory stores a current basic input/output system (BIOS) firmware image. During a regular boot mode of the information handling, the processor creates a first set of tables associated with the current BIOS firmware image, stores the first tables to the memory, and receives a BIOS firmware update image. During a BIOS update boot mode of the information handling system, the processor creates a second plurality of tables associated with the BIOS firmware update image, and compares the first and second tables. In response to a difference being determined between the first and second tables, the processor aborts the BIOS update boot mode and generate an error log.

Abstract: A method for manufacturing a lens includes: providing a metal sheet and a stamping mold; forming a light shield of a predetermined shape and size from the metal sheet using the stamping mold; providing an injection mold, the injection mold defining a mold cavity, the mold cavity defining a molding surface that corresponds to the light shield in shape and size; placing the light shield in the mold cavity, wherein the light shield is pasted to the molding surface; and forming a lens with the light shield using the injection mold.

Abstract: A touch panel input stylus comprises a casing, a lens, a shading member, and a light emitting element. The lens, the shading member, and the light emitting element are received in the casing. The shading member defines a stepped through aperture. The stepped through aperture includes a light through hole and a receiving hole having a greater diameter than the light through hole. A longitudinal positioning structure is provided in the receiving hole. The light emitting element is received and fixed in the receiving hole firmly by the longitudinal positioning structure. The longitudinal positioning structure is deformable. The light emitted from the light emitting element passes through the light through hole and then travels through the lens.

Abstract: A spacer includes an object-side surface, an image-side surface, and an outer sidewall. The image-side surface is opposite to the object-side surface. The outer sidewall defines a first cutout and a second cutout. The first cutout and the second cutout penetrate through the object-side surface and the image-side surface. Contours of the first cutout and the second cutout are different from each other.

Abstract: A lens module includes a lens barrel, a first lens, a second lens, a third lens, and two spacers. The lens barrel includes an object-side end and an image-side end. The first, second, and third lenses are received in the lens barrel and arranged in that order from the object-side to the image-side. One of the two spacers is positioned between the first lens and the second lens, and the other of the two spacers is positioned between the second lens and the third lens. Each of the spacers is chamfered to prevent the ingress of unwanted light.

Abstract: A lens module includes a lens barrel, a first lens, a second lens, and a spacer. The lens barrel includes an object-side end and an image-side end opposite to the object-side end. The first lens is received in the lens barrel, and adjacent to the object-side end. The second lens is received in the lens barrel, and adjacent to the image-side end in relative to the first lens. The spacer is an annular plate, and includes an object-side surface, an image-side surface opposite to the object-side surface, and an inner sidewall. The spacer is positioned between the first lens and the second lens. The object-side surface faces the first lens, and the image-side surface faces the second lens. The intersection of the object-side surface and the inner sidewall forms a chamfer.

Abstract: A method for manufacturing a lens includes: providing a metal sheet and a stamping mold; forming a light shield of a predetermined shape and size from the metal sheet using the stamping mold; providing an injection mold, the injection mold defining a mold cavity, the mold cavity defining a molding surface that corresponds to the light shield in shape and size; placing the light shield in the mold cavity, wherein the light shield is pasted to the molding surface; and forming a lens with the light shield using the injection mold.

Abstract: A spacer includes an object-side surface, an image-side surface, and an outer sidewall. The image-side surface is opposite to the object-side surface. The outer sidewall defines a first cutout and a second cutout. The first cutout and the second cutout penetrate through the object-side surface and the image-side surface. Contours of the first cutout and the second cutout are different from each other.

Abstract: An exemplary camera includes a lens module, a rotatable board, and a number of secondary lenses. The lens module is positioned on a substrate and defines an optical axis at the central axis thereof. The rotatable board is positioned above the lens module and rotatable to a number of discrete positions. The secondary lenses are located on the rotatable board. In each discrete position, one of the secondary lenses is optically aligned with the lens module.

Abstract: A lens module includes a lens barrel, a first lens, a second lens, a third lens, and two spacers. The lens barrel includes an object-side end and an image-side end. The first, second, and third lenses are received in the lens barrel and arranged in that order from the object-side to the image-side. One of the two spacers is positioned between the first lens and the second lens, and the other of the two spacers is positioned between the second lens and the third lens. Each of the spacers is chamfered to prevent the ingress of unwanted light.

Abstract: A lens module includes a lens barrel, a first lens, a second lens, and a spacer. The lens barrel includes an object-side end and an image-side end opposite to the object-side end. The first lens is received in the lens barrel, and adjacent to the object-side end. The second lens is received in the lens barrel, and adjacent to the image-side end in relative to the first lens. The spacer is an annular plate, and includes an object-side surface, an image-side surface opposite to the object-side surface, and an inner sidewall. The spacer is positioned between the first lens and the second lens. The object-side surface faces the first lens, and the image-side surface faces the second lens. The intersection of the object-side surface and the inner sidewall forms a chamfer.

Abstract: An exemplary camera includes a lens module, a rotatable board, and a number of secondary lenses. The lens module is positioned on a substrate and defines an optical axis at the central axis thereof. The rotatable board is positioned above the lens module and rotatable to a number of discrete positions. The secondary lenses are located on the rotatable board. In each discrete position, one of the secondary lenses is optically aligned with the lens module.

Abstract: An exemplary camera module includes a barrel, a holder, and an image sensor assembly. The barrel forms an external thread on an outer surface thereof. At least one protrusion is formed along a circumferential direction on the outer surface thereof. The at least one protrusion and the external thread are arranged in an order written from an object side to an image side. An internal thread is formed on an inner wall of the holder to threadedly engage with the external thread of the barrel. The at least one protrusion contacts the inner wall of the holder but are slidable relative to the inner wall of the holder. The image sensor assembly includes an image sensor. The image sensor is received in the holder.

Abstract: A camera module includes a lens barrel, a first lens and a second lens. The lens barrel includes a substantially cylindrical inner wall. The first lens is received in the lens barrel. The first lens includes a first circumferential side surface spaced from the inner wall. The second lens is engaged with the first lens and received in the lens barrel. The second lens includes a second circumferential side surface. The second circumferential side surface has a first portion contacting the inner wall and a second portion spaced from the inner wall, thus a gap defined between the second portion and the inner wall. Adhesive is applied in the gap between the second portion and the inner wall.

Abstract: A lens assembly includes a first lens, a second lens, a third lens and a fourth lens. The first lens has a first flange on a surface thereof, with the first flange having a first receiving groove. The second lens has a second flange on a surface thereof and a positioning protrusion on the other surface opposite to the second flange. The positioning protrusion is received in the first receiving groove. The second flange defines a second receiving groove. The third lens has a third flange on a surface thereof and a positioning protrusion on the other surface opposite to the third flange. The positioning protrusion is received in the second receiving groove. The fourth lens has a fourth flange on a surface thereof, and the fourth flange defines a fourth receiving groove for receiving the third flange.

Abstract: A camera module includes a lens barrel, a first lens and a second lens. The lens barrel includes a substantially cylindrical inner wall. The first lens is received in the lens barrel. The first lens includes a first circumferential side surface spaced from the inner wall. The second lens is engaged with the first lens and received in the lens barrel. The second lens includes a second circumferential side surface. The second circumferential side surface has a first portion contacting the inner wall and a second portion spaced from the inner wall, thus a gap defined between the second portion and the inner wall. Adhesive is applied in the gap between the second portion and the inner wall.

Abstract: A touch panel input stylus comprises a casing, a lens, a shading member, and a light emitting element. The lens, the shading member, and the light emitting element are received in the casing. The shading member defines a stepped through aperture. The stepped through aperture includes a light through hole and a receiving hole having a greater diameter than the light through hole. A longitudinal positioning structure is provided in the receiving hole. The light emitting element is received and fixed in the receiving hole firmly by the longitudinal positioning structure. The longitudinal positioning structure is deformable. The light emitted from the light emitting element passes through the light through hole and then travels through the lens.

Abstract: An exemplary optical pen includes a body, an infrared light source received in the body, a converging lens unit, and a tip. The converging lens unit is received in the body and is positioned along the light path of infrared light emitted from the infrared light source, and is configured for converging the infrared light. The tip includes a receiving end and a handwriting end at opposite sides thereof and defines a through hole extending from the receiving end to the handwriting end. The receiving end is received in the body and is configured for fixing the converging lens unit. The handwriting end protrudes from the body and is configured for projecting the converged infrared light.

Abstract: A light pen with an open end includes a light emitting diode and a light shielding element. The light-emitting diode is fixed in the light pen, and includes a light guide body facing the open end. The light shielding element is made of opaque material and disposed between the open end and the light-emitting diode. The light shielding element defines a through hole configured for allowing light at a half-intensity angle of the light-emitting diode to pass therethrough.