Modelling optical element production method

Abstract

The manufacture method for optical element comprises main steps: a. preforming glass body similar to product; b. fire polishing, i.e. putting the said body into press mould to heat to its softening point and produce self-repair to surface fine crack damage; c. taking two-stage pressing form in same mould to the said body to objective format; d. annealing slowly to normal temperature, and obtain finished product of spherical, aspheric surface or other special shape.

Description

technical field [0001] The invention relates to a manufacturing method of molded optical components, especially a kind of glass optical components that can be used to manufacture high-precision spherical surfaces, aspheric surfaces or special shapes. It mainly performs fire casting, pressing and annealing in the same mold. The work can make the micro scratches or pits on the surface of the preform produce self-repair function, and can quickly achieve the production of aspheric mirrors or other special lenses; thus, the precision and economic value of the product can be increased. Background technique [0002] Generally, the existing manufacturing methods of glass optical elements (lenses) are manufactured through multiple stages of grinding. The existing optical lenses that are ground by way of contact friction will leave abrasives on the surface. Traces, serious ones can be seen clearly with the naked eye, which makes it difficult to control the quality of the existing prod...

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Problems solved by technology

[0002] Generally, the existing manufacturing methods of glass optical elements (lenses) are manufactured through multiple stages of grinding. The existing optical lenses that are ground by way of contact friction will leave abrasives on the surface. Severe traces can be seen clearly with the naked eye, making it difficult to control the quality of the existing product, which in turn increases the manufacturing cost

[0003] In addition, when manufacturing optical lenses by grinding, it is difficult to manufacture aspherical or asymmetrical lenses and cannot achieve the expected accuracy. Not only that, even for spherical lenses with a small radius of curvature (that is, a large degree) Grinding, it is also easy to cause curvature deformation on the periphery of the lens; therefore, this existing manufacturing method is not the best method for the manufacture of some special lenses, and it is necessary to improve it.

[0004] In addition, there are currently optical lenses manufactured by pressing in the industry, and the materials used are all made of acrylic materials or polymer resin materials, so the finished products (commonly known as: plastic lenses) are easy to wear and tear. The durability is poor, and its light transmission is not as good as glass optical lenses, so it is not suitable for some more sophisticated instruments, and the manufacturing process of this method is not suitable for glass optical lenses.

[0005] In view of the shortcomings of the above-mentioned existing methods of manufacturing optical lenses by grinding, and the method of manufacturing plastic lenses by pressing is not suitable for manufacturing glass lenses, the inventor of this case finally invented a new manufacturing method for molded optical elements

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