microscope backlight

Abstract

The invention relates to a microscope backlight which comprises a floor glue layer and a glass sheet adhered onto the floor glue layer. A protection layer for avoiding the glass sheet from scratching fingers is adhered to the periphery of the glass sheet. According to the invention, the protection layer for preventing the glass sheet from scratching the fingers is adhered to the periphery of the glass sheet, the protection layer is preferably a glue layer, such as a thick and wear-resistance high-temperature glue layer, and the protection layer not only is durable, but also can be used for improving the working efficiency of workers; the floor glue layer is blue and not only is convenient to distinguish from the glass sheet, but also ensures the backlight to well set off an optical lens with an inspection function, the missing detection of detects of stain, scratches and the like on the lens is reduced, and the inspection effect is ensured.

Description

technical field [0001] The invention relates to the field of optical lens appearance inspection, in particular to a microscope backlight plate for optical lens appearance inspection. Background technique [0002] After the optical lens is rounded and ultrasonically cleaned, it needs to be inspected under a microscope to ensure point defects (different color spots / bubbles / pits / oil stains, etc.), fine scratches, hard scratches / bruises, flashes, fingerprints , transparency and other bad items do not exceed the standard. During the inspection, workers usually put the lens on the backlight with bare hands. The backlight is usually the bottom plate and the glass sheet glued to the bottom plate. Due to the limitation of the factory’s own processing conditions, the glass sheet is usually directly cut into a rectangle from the lens processing raw material sheet. Because the edge of the glass sheet is very thin and not smooth enough, it will often scratch the worker's fingers; in add...

AI Technical Summary

Problems solved by technology

During the inspection, workers usually put the lens on the backlight with bare hands. The backlight is usually the bottom plate and the glass sheet glued to the bottom plate. Due to the limitation of the factory’s own processing conditions, the glass sheet is usually directly cut into a rectangle from the lens processing raw material sheet. Because the edge of the glass sheet is very thin and not smooth enough, it will often scratch the worker's fingers; in addition, the bottom plate is usually black to distinguish it from the glass sheet, but the black bottom plate will absorb a considerable part of the light from the top of the lens. The backlight actually becomes a light-absorbing plate, the background of the lens becomes darker, and it is difficult to detect defects such as stains and scratches on the lens, which reduces the inspection effect

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