Method for making square aperture plane micro-lens array with high filling coefficient
A technology of microlens array and filling factor, which is applied in lens, optics, instruments, etc., can solve the problems of long ion exchange time and low ion mobility, etc.
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[0054] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings.
[0055] Such as Figure 11 As shown, the description of each step is as follows:
[0056] (a) is coating a titanium film on a glass substrate, (b) is uniformly coating photoresist, (c) is exposing (ultraviolet light), (d) is developing, (e) is removing titanium film from a window, (f) For photoresist removal, (g) for ion exchange.
[0057] The specific implementation process is as follows,
[0058] (1) Template preparation: design the size of the template, and then make the template;
[0059] Experiments have proved that even if the ion exchange time of the circular window array is very long, there will always be unexchanged areas between the nearest neighbor windows, and it is difficult to achieve a high fill factor. Therefore, to make a planar microlens array with a high filling factor, square windows and their corresponding arrangements can b...
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