CN2048982U - Ultrathin optical lens - Google Patents

Abstract

The utility model relates to an ultrathin optical lens, as the periphery of the optical central area of the lens to the edge of the lens is designed into circular curved surface shape, the thickness of the lens is thinned (only 1/3 of a traditional lens) under the precondition that the luminosity, the accuracy and the object observing effect of original lens are not be influenced, and the weight of the lens is correspondingly relieved (about 1/3 of the traditional lens), making a wearer has comfortable wear and beautiful look. The lens can be processed and made by making use of homemade material, the cost is only 50% of the import cost, and the lens is mainly suitable for preparing high-degree myopia glasses.

Description

Ultrathin optical lens

The utility model relates to a kind of super ultrathin optical lens.

As everyone knows, existing optical lens all is according to the required number of degrees curved surface that two faces of glass are ground to different curvature radius to be made.Therefore, we are not difficult to find, as prepare glasses (being meant-600 ° of degree to 2000 ° degree here) for the high myopia patient, its lens edge thickness is necessarily thicker, correspondingly the weight of whole glasses is also heavier, this not only makes the glasses wearer ear and the bridge of the nose bear bigger pressure for a long time, the constriction that causes suffering, and have a strong impact on the specious of glasses wearer.

Recently, the ultrathin eyeglass of inventing and promoting the use of (promptly high refraction low-gravity glass mirror) though about 1/4 than conventional lenses weight saving, carry on as before and adopt traditional handicraft method machining lens, completely do not solve so its edge thickness problem obtains the garden always.

Task of the present utility model is that eyeglass inner face optical centre district periphery sides is designed to the ring-type curved to the lens edge place, and smooth connection of curved surface that this ring-type curved surface and optical centre district are formed, thereby in the accuracy that does not influence the original luminosity of eyeglass and looking under the prerequisite of thing effect, the unnecessary part of lens edge is ground away, reach attenuate lens thickness and the purpose that alleviates eyeglass weight, make the glasses of preparation wear comfortable, more attractive in appearance, beautiful.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is existing lens structure synoptic diagram;

Structure of the present utility model as shown in Figure 1 exactly, it is a kind of improvement to existing lens structure.Referring to accompanying drawing, at eyeglass (4) inner face that constitutes by the curved surface (1,3) of two different curvature radius, the periphery sides in optical centre district to lens edge place is designed to the ring-type curved, the smooth connection of curved surface (3) that this ring-type curved surface (2) and optical centre district form.

The utility model is owing to taked abovementioned technology, thereby have thin thickness (only for conventional lenses 1/3), (be about with number of degrees conventional lenses 1/3) in light weight, the wearer wears the advantages such as comfortable, if adopt domestic machining eyeglass manufacturing, its manufacturing cost is than import sheet low 50%.

Claims (1)

1, a kind of super ultrathin optical lens, it is made of the curved surface of two different curvature radius, it is characterized in that this eyeglass inner face optical centre district periphery sides is designed to the ring-type curved to the lens edge place, and smooth connection of curved surface of forming of its ring-type curved surface and central optical zone.

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