摘要:
Certain example embodiments of this invention relate to patterned glass that can be used as a cylindrical lens array in a concentrated photovoltaic application, and/or methods of making the same. In certain example embodiments, the lens arrays may be used in combination with strip solar cells and/or single-axis tracking systems. That is, in certain example embodiments, lenses in the lens array may be arranged so as to concentrate incident light onto respective strip solar cells, and the entire assembly may be connected to a single-axis tracking system that is programmed to follow the East-West movement of the sun. A low-iron glass may be used in connection with certain example embodiments. Such techniques may advantageously help to reduce cost per watt related, in part, to the potentially reduced amount of semiconductor material to be used for such example embodiments.
摘要:
A light emitting device is provided, comprising a light emitting diode 10, where the light emitting surface 11 thereof is bound to an optical element 13 by means of a bonding material 12 comprising a phosphate glass or an oxide glass having Tg
摘要:
There is disclosed a method of producing a multifocal, ophthalmic lens blank wherein a glass major element is formed that has a raised countersink zone on one surface, the remainder of the glass major element being thinner than the countersink zone, but of such thickness that it can be ground and polished to form a lens, a countersink is formed in the countersink zone, a segment element is formed and is fused in the countersink to form a lens blank assembly.
摘要:
A glass block (10) comprises a plurality of intermediate glass plates (12i) stacked between a top plate (12t) and a bottom plate (12b). The top and bottom plate each have a selected composition, with a particular index of refraction and a softening temperature. The intermediate plates have compositions intermediate those of the top and bottom plates and are stacked so as to provide a gradient in composition from top to bottom. Heating the assembly at a fusion temperature fuses the plates together to form the glass block. After cooling down to room temperature, the glass block can be shaped to make lenses and other light directing devices. Such lenses have a gradient in the refractive index of at least about 0.085, and gradients approaching 0.5 are achievable. The thickness of the glass block along the optic axis is fairly unlimited, and thicknesses on the order of 10 mm and more are routinely achievable by the process of the invention.
摘要:
There is disclosed an improved method of assembling and fusing the segment and major elements of a multifocal lens blank that employs glass spacer members to space the segment from the major element and allow the segment to progressively slump into sealing relationship with the major as fusion temperature is approached. The glass spacer member has a softening point that is lower than that of the major element glass and may approximate that of the segment glass.
摘要:
A multifocal lens is formed by positioning ground and polished elongate lens portions together with the longitudinal edges thereof abutting each other, and fusing the abutting edges together.