Assembly method for array-type lens

Abstract

The invention discloses an assembly method for an array-type lens. The assembly method includes the following steps: A, mounting a third lens set (60) in a lens barrel (70); B, assembling a second lens set (40); C, assembling a first spacer (30); D, assembling a first lens set (20); E, assembling a pressing ring (10). By the assembly method, a lens structure capable of correcting the problem of optical axis eccentricity can be utilized, and yield of the array-type lens is increased substantially by solving the problem of optical axis aligning.

Description

technical field [0001] The invention relates to the design and assembly technology of an array lens, in particular to an assembly method of an array lens. Background technique [0002] Existing array lenses include array lenses composed of several individual small lenses and wafer-level array lenses produced by WLO (Wafer Level Optics) technology. The former is difficult to meet the requirement of consistency because each lens is independent of each other, so multiple small lenses cannot be well focused and imaged at the image plane at the same time, and manual focusing steps are required, so the process is cumbersome and the production cost is high. Although the latter overcomes the shortcomings of the former, it also has many disadvantages. For example, the US patent No. US8023208, named "Miniature stacked glass lens module", has a low degree of freedom in design, and the lens is directly molded. Could not have been better refined in later stages. In addition, high-resol...

AI Technical Summary

Problems solved by technology

Because the former lenses are independent of each other, it is difficult to meet the requirements for consistency, so it is impossible to focus multiple small lenses on the image plane at the same time, and manual focusing steps are required, so the process is cumbersome and the production cost is high.

Although the latter overcomes the shortcomings of the former, it also has many disadvantages. For example, the US patent No. US8023208, named "Miniature stacked glass lens module", has a low degree of freedom in design, and the lens is directly molded. could not be better refined in later stages

In addition, high-resolution lenses require extremely high optical axis alignment accuracy, and each lens of the array lens has its own independent optical axis. When another optical lens is stacked, the optical axes of each lens of the two array lens groups cannot To ensure accurate alignment, which in turn leads to lower yields and the defect that its production process is overly dependent on the high precision requirements of the process

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