Abstract: A solar notebook computer includes a storage battery and at least one solar panel. The solar panel is connected electronically with said storage battery through a regulated constant current circuit unit, and, the regulated constant current circuit unit is inside of the host of the notebook computer or outside of the notebook computer. Said at least one solar panel is movably set on the casing of the notebook computer through a connecting equipment. The solution is simple, easy to carry, conductive to environmental protection and expands the functions of the notebook computer.

Abstract: An additional knurled ring for an optical lens is composed of an annular portion and teeth distributed in a radial direction around the outside of the annular portion. The inner diameter and shape of the additional knurled ring match the outer diameter and shape of an adjusting ring of the optical lens. The additional knurled ring is movably connected with the outside of the adjusting ring of the optical lens. Since the additional knurled ring for the optical lens can be extended towards the front of the lens and beyond the front end of the optical lens, the interference of stray light with the imaging of the optical lens is blocked. Digital scale designations are engraved or printed on the outside of the additional knurled ring for optical lens, the position of the scale and the values of the designations are corresponding to the focal length, aperture, and focal range information of the optical lens.

Abstract: A monitor visor includes a top component and two side components respectively formed at two sides of the top component, wherein the top and side components are formed in a sheet-like configuration and are orderly connected to form a visor body having a visor cavity with a bottom opening. The sizes of top and side closing walls of the visor cavity match with the sizes of the top and side edges of the monitor respectively. A connecting component is provided between the top component and the side component to join the top component and the side component together. The contour of the inner side of the connecting component matches the shape of the vertex angle of the monitor. The visor is able to match the monitor screen with a circular or another shape of its vertex angle. The visor is easily disassembled, packaged and transported in a convenient manner.

Abstract: An additional knurled ring for an optical lens is composed of an annular portion and teeth distributed in a radial direction around the outside of the annular portion. The inner diameter and shape of the additional knurled ring match the outer diameter and shape of an adjusting ring of the optical lens. The additional knurled ring is movably connected with the outside of the adjusting ring of the optical lens. Since the additional knurled ring for the optical lens can be extended towards the front of the lens and beyond the front end of the optical lens, the interference of stray light with the imaging of the optical lens is blocked. Digital scale designations are engraved or printed on the outside of the additional knurled ring for optical lens, the position of the scale and the values of the designations are corresponding to the focal length, aperture, and focal range information of the optical lens.

Abstract: A display light shield as a visor for a portable computer, includes a top portion and two side portions. The portions are sheet and jointed to form a hood whose sides and top are closed while bottom is open. The shape of the hood is suitable for the computer monitor. A fastener is provided on the hood for attaching the visor to the computer. The visor can be folded by changing joining manners of the portions so that packaging and transporting become convenient.

Abstract: A solar notebook computer includes a storage battery and at least one solar panel. The solar panel is connected electronically with said storage battery through a regulated constant current circuit unit, and, the regulated constant current circuit unit is inside of the host of the notebook computer or outside of the notebook computer. Said at least one solar panel is movably set on the casing of the notebook computer through a connecting equipment. The solution is simple, easy to carry, conductive to environmental protection and expands the functions of the notebook computer.