How do you think glasses are made? It is often mentioned by guests that it is good to have glasses. Do you still want to go? In view of this problem, briefly explain the process of making glasses, and your concept of making glasses will be clearer another day.
The frames made this time are four 999.9 frames, which are made of titanium IP material and half-groove design, especially the metal frame surface support, instead of nylon wire, so the manufacturing difficulty will be improved a lot. The lens is Nikon 1.5 single aspheric surface, and the mirror coating is Zhijie coating (similar to HOYA ultra-clean coating), so it is mainly considered to compare with HOYA after production.
Lens magnification right eye S-2.25 C-0.50 X 90 left eye S- 1.75 focal length 35/34mm.
■ Original envelope and warranty of Nikon lens.
Nikon 1.5 single-sided aspheric coating, this film is a special lens, and the envelope of the special lens has complete prescription information and dealer information for identification. This is all the accessories of this lens, not all the lenses.
■ Nikon Zhijie coating
Nikon Zhijie coating is a special coating for Nikon, which is different from the general coatings of Zeiss and Hoya. There is also a patented anti-slip coating on it, which is convenient for the store to make. After making, it can be wiped off with a paper towel, and the erased shape can be seen when making invisible marks on the lens. (This is also a feature of the above lenses. Ordinary lenses may not always have this mark on them. )
■ Pre-operation of lens grinding
Before grinding the lens, it is necessary to make the template of the lens, and then point out the focal length position on the template and align it with the focal points measured on the lens and the template, thus completing the preliminary operation of the lens. If there is a brand logo, it should be taken into account. (But some frames or lenses are small in shape, and MARK may be worn off when polished. )
■ lens grinding principle
If you copy the key, the principle is actually very similar, but the complexity of the machine has increased a lot. According to the shape of the template and the type of frame to be made, polish the lens into the same shape as the template. (Our store also uses the same model at present. )
■ Lens type grinding is completed.
After rough grinding and fine grinding, the lens is finally formed, and then the size of the lens is corrected to complete the preliminary lens. (The correction pulley is the silver roller above the machine in the figure. )
■ Lens polishing and machining
Semi-or rimless lenses need to be polished and then polished to show the luster of the lens. If half of the frames need to be slotted, the fineness of polishing can be seen from the store's efforts in lens production! .
■ Conclusion
After the lens is finished, it needs to be adjusted, oiled and cleaned. According to the different production methods of each lens, the production time of each lens may be from 30 minutes to one or two hours, which involves the store's meticulous production of lenses, so we must affirm the phrase "slow work makes fine work", glasses "catch up", but the quality can't catch up.