Abstract: The present invention provides a hot-pressed carbon/sulfur composite energy-storage cathode utilized in a lithium-sulfur battery, comprising: a conductive porous substrate with specific surface area of 1˜100 m2/g before sulfur loading, and a sulfur layer formed on the conductive porous substrate by hot-pressing method; the cathode has a sulfur loading of 8 mg/cm2 and a sulfur content of 73 wt %. The lithium-sulfur battery of the present invention, with the significant enhancement of the loading and the content of the active material achieved by the hot-pressed carbon/sulfur composite energy-storage cathode, may have the effect of high cyclability and high energy density in a lean-electrolyte lithium-sulfur battery with a low electrolyte-to-sulfur ratio of 7˜4 ?L/mg.

Abstract: A photolithography projection lens, having a plurality of lens elements and a light diaphragm arranged among them, arranged along an optical axis, and comprising an object side and an image side respectively arranged at the front and rear ends of the plurality of lens elements; wherein: the diopters of the two lenses respectively near the object side and the image side must be positive; each of the lens elements is a single lens without cement; the angle between the chief rays at different image height positions and the optical axis is <1 degree, and the angle between the chief rays at different object height positions and the optical axis is <1 degree; and under the projection of 350˜450 nm wavelength light, it provide the imaging effect of precise magnification.

Abstract: A wheel control mechanism includes a support base, a wheel module, a first magnetic module and a second magnetic module. The wheel module, the first magnetic module and the second magnetic module are installed on the support base. The first magnetic module generates a magnetic attractive force to attract a metal ratchet of the wheel module. By adjusting the position of the second magnetic module relative to the first magnetic module, the strength of the magnetic attractive force is changed. Consequently, the rotation of the wheel module results in a tactile feel or does not result in the tactile feel.

Abstract: An optical lens, comprising: an enlarging side and a shrinking side, between the enlarging side and the shrinking side sequentially having a first group lens, a light diaphragm, and a second group lens, wherein the light diaphragm is for separating the first group lens and the second group lens; the first group lens having multiple lenses, and the second lens is an aspheric lens; the second group lens having at least four lenses, wherein at least one lens is an aspheric lens and a positive diopter lens is an aspheric lens; the first group lens and the second group lens having two set of doublet lens.

Abstract: A projection optical system with a concave reflector in the projection lens, comprising: an image source; a lens group; a reflector; an image and an aperture, the lens group and the reflector form multiple optical paths between the image and image source, each optical path has a chief ray and a marginal ray, the chief ray of one of the optical paths forms a chief ray of a paraxial image height at the part where image source be near to the optical axis, the chief ray of another one of the optical paths forms a marginal ray of an off-axis image height at the part where image source be far from the optical axis; wherein 2.2<F1/F2<3.0; 8<IMH/TR/Fno<19; 5<IMH*T1/T2<8. whereby the optimal optical performance of resolving power and optical path interference allowance will be achieved.

Abstract: A projection optical system, comprising: an image source; a lens group; a reflector; an image and an aperture, the lens group and the reflector form multiple optical paths between the image and image source, each optical path has a chief ray and a marginal ray, the chief ray of one of the optical paths forms a chief ray of a paraxial image height at the part where image source be near to the optical axis, the chief ray of another one of the optical paths forms a marginal ray of an off-axis image height at the part where image source be far from the optical axis; whereby forming a first point and a second point, the first point located at the origin and the second point is located in the first quadrant, and forming a third point and a fourth point, the third point located at the fourth quadrant and the fourth point is located in the second quadrant.

Abstract: A projection lens structure mainly includes a first group of lenses with a negative dioptric value, a second group of lenses with a positive dioptric value, a third group of lenses with a positive dioptric value and a fourth group of lenses with a negative dioptric value. The first group of lenses further includes at least a first lens and a second lens, of which the first lens ha a plastic aspheric lens in a meniscus shape with a focal length between ?25˜?80 mm. The second group of lenses further includes at least a third lens. The third group of lenses further includes at least a first doublet with a focal length between 25˜80 mm. The fourth group of length further includes at least a group of doublets, a fourth lens and a fifth lens.

Abstract: A protruding structure of lenses barrel comprises a lenses barrel made by metal, said lenses barrel having an inner side of the barrel; and at least one protruding structure being an elastomer made by macromolecule material and arranged at said inner side of the barrel; whereby the interval between said inner side of the barrel and the predetermination is decreased into extremely small interval by the interference from the surface of said protruding structure, or produce slight interference to the predetermined installing component, the predetermined installing component can be lens, not only the protruding structure solve the lens shifting problem also achieve the effect of getting better image and improving the stability of lens installing, and coating said macromolecule material through spray coating or adhesive dripping, then solidify said macromolecule material by heating or UV Radiation to form the protruding structure, and achieve the effect of precisely controlling the thickness and range of the protr

Abstract: A projection lens structure mainly includes a first group of lenses with a negative dioptric value, a second group of lenses with a positive dioptric value, a third group of lenses with a positive dioptric value and a fourth group of lenses with a negative dioptric value. The first group of lenses further includes at least a first lens and a second lens, of which the first lens ha a plastic aspheric lens in a meniscus shape with a focal length between ?25˜?80 mm. The second group of lenses further includes at least a third lens. The third group of lenses further includes at least a first doublet with a focal length between 25˜80 mm. The fourth group of length further includes at least a group of doublets, a fourth lens and a fifth lens.

Abstract: An optical lens with laser induced periodic surface structure has an optical lens made in one-piece with a surface and a convex surface. The convex surface has a microstructure of periodic surface induced and formed by laser. The periodic surface structure has a plurality of linear structures periodically arranged with an interval of 50 nm-1000 nm between each other and a height of 50 nm-500 nm.

Abstract: A projection lens structure includes a first group of lens, an aperture stop and a second group of lend. The aperture stop is arranged at a rear of the first group of lens to form a long-focus lens with a focal length between 30-80 mm and the second group of lens is arranged at a rear of the aperture stop to form a short-focus lens with a focal length between 20-30 mm. With the long-focus lens and the short-focus lens operated correspondingly, the structure of the projection lens is simple and the manufacturing cost is low without affecting the quality of produced images.

Abstract: A projection lens structure includes a first group of lens, an aperture stop and a second group of lend. The aperture stop is arranged at a rear of the first group of lens to form a long-focus lens with a focal length between 30-80 mm and the second group of lens is arranged at a rear of the aperture stop to form a short-focus lens with a focal length between 20-30 mm. With the long-focus lens and the short-focus lens operated correspondingly, the structure of the projection lens is simple and the manufacturing cost is low without affecting the quality of produced images.

Abstract: A projection system includes a long-focus lens that is able to generate an image independently with a focal length between 70-300 mm, a short-focus lens that is able to generate an image independently with a focal length between 3-8 mm and shares an optical axis with the long-focus lens and at least one reflector to reflect the optical axis for direction change. When the long-focus lens generates an image, the short-focus lens then generates the image to a pre-determined position thereby.