Square optical glass lens and method of producing the same

Abstract

The invention relates to a square optical glass lens and a method for manufacturing the same. The square optical glass lens comprises a first optical surface, a second optical surface and a right angle square shoulder part, wherein the first optical surface and the second optical surface can be formed by a spherical surface or a non-spherical surface; and the right angle square shoulder part can be arranged in a lens base of a lens group. The method for manufacturing the square optical glass lens comprises the following steps: using a square glass as a raw material; making use of a multi-die-cavity forming die to model multi-die-cavity modeling glass into a multi-lens lens blank; separating the lens blank into individual square optical glass lenses; and providing a convex body in the multi-die-cavity forming die in order to avoid air bubbles caused by residual air to influence the precision of the optical surfaces in the glass modeling process so that the air in the molding process can be discharged out through the clearance formed by the height fall around the convex body. The square optical glass lens manufactured by the method not only has precise optical precision, but also greatly simplifies the prior monomer processing of the square optical glass lens so as to reduce the manufacturing cost.

Description

technical field [0001] The invention relates to a square optical glass lens and a manufacturing method thereof, especially a low-cost square optical glass lens with a precise optical surface and a right-angled square shoulder, which is used in mobile phone cameras and CCD (charge Coupled device, charge-coupled device) or CMOS (complementary metal-oxide-semiconductor, complementary metal single metal oxide semiconductor) and other sensing components on the camera. Background technique [0002] With the advancement of technology, electronic products are constantly developing towards thinner, smaller and multi-functional. In electronic products, such as digital still camera, PC camera, network camera, mobile phone Devices such as personal digital assistants (PDA) all have the requirement of adding an imaging device; and in order to be convenient to carry and meet the needs of humanization, the imaging device not only needs to have good imaging quality, but also needs to have a ...

AI Technical Summary

Problems solved by technology

However, in the prior art in which the exhaust passage is provided in the molding equipment, if the cross-sectional area of ​​the passage is large enough, it can approach the preferred δ value, but at this time, a large amount of molten glass will infiltrate into the passage to form a side skirt, resulting in a Afterwards, secondary processing is required to cut off the side skirt; and in the prior art in which several grooves are preset in the lower mold core to form air passages, although it can prevent the glass material from pressing the air passages and hindering the exhaust, but in the forming Several convex bodies will be formed on the lens, which will cause difficulty in lens assembly, and if the cross-section of the groove of the lower mold core is shallow and small, the δ value is too low and the exhaust effect will be lacking; the method of having grooves on the lower mold core is applied in Multi-cavity molding, because the air channel in the center of the multi-cavity is too long, the exhaust effect is not good

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