Excelite "Precision Vision"

Thai Optical Group Public Company Limited (TOG) has produced and exported optical lens to more than 50 countries worldwide. All of our lens products have been produced under quality system process control conformed to the international standard of quality system ISO9000. The products have been well accepted by leading lens distributors, optical retailers and optical franchise in Europe and America.
   
Excelite "Precision Vision"
is the brand of ophthalmic lens products dedicated by our diligent (hard) working to offer better ophthalmic lenses. We have exported wide range of lens products to many countries. For more than 50 years, combining our long experiences and intrinsic technology on ophthalmic lens manufacturing, we have developed and been offering various kinds of ophthalmic lens, which could be classified into many aspects of classification;

Divided by material: plastic lens, photochromic lens and mineral lens

Divided by production process: finished lens and Rx prescription lens

  • Finished lens

    • Finished lens is an uncut ophthalmic lens, which could be cut and mounted into spectacle frame. Commonly, it has power ranging from +6.00 to –6.00 diopter with or without cylinderical power upto 2.00 diopter.

  • Rx prescription lens
    •
    Rx prescription lens is an ophthalmic lens made by grinding and polishing from semi-finished lens to a specific required eye prescription power, in which generally require very high far-sight or near-sight spherical power or more than 2.00 diopter of cylinderical power.

       
       
    Divided by optical design or eyesight correction needs.

  • Spheric Lens

    • Spherical lens is an ordinary ophthalmic lens to correct one distance, either near or far and combining with or without astigmatism error. Optical shops typically call it as ‘single vision lens’. The lens surface has symmetrical axes providing a spherically shaped surface, much like the surface of a ball.

    The higher of lens power, the thicker and more curve lens would be. So optically, there would be a slight distortion of an image at the rim of lens edge on these strong powers, due to the physical phenomena of light refraction so called ‘spherical aberration’. Strong farsighted lenses affects ‘bulbous’ looking, enlarging the eyes of spectacle wearer. In opposite way, strong nearsighted lenses minify the eyes appearing smaller and beady.

  • Aspheric Lens

    • Aspherical lens is complicatedly designed to be flatter curve. The lens would be thinner and less magnification in case of convex lens and less minification in case of concave lens. It would be more benefit to get much thinner lens, when producing Aspherical design from higher refractive index of lens material.

  • Bifocal lens
    •
    Bifocal lens is commonly used for prebyopia, who cannot clearly see near objects or who need both far distance viewing and near viewing lenses. The lens has a noticeable segment added for Addition Power to correct near viewing, which separates between the far vision zone and the near vision segment.

  • Progressive lens
    •
    Progressive lens is also to correct presbyopia. The lens is sophisticatedly designed to provide continuously and gradually transition to correct from far distance viewing to near objects viewing without the conventional segment line. The lens appearance looks like single vision lens that help spectacle wearer looks younger and no need to wear in and out often. There are two designs of progressive lenses, the DiscoveryXtra, which can be used with frame height from 25 to 29mm and the Discovery, which can be used with frame height from 29 mm.

  • Excelite Freedom-Back side progressive

    • Back side progressive is specialty lens produced from new arrival technology - Free From Surfacing. Every pair of lenses will be produced for individual needs. Lens was not only designed for less distortion and more smoothly vision for easy to adapt but also increased using area 20% compared with normal progressive lens. Back side progressive is thin-beautiful and can be used with every sized of frames above25 mm.