Compound liquid-crystal micro-lens for sensor

Abstract

A first liquid crystal lens and a second liquid crystal lens are provided on both sides of an intermediate glass plate. The first liquid crystal lens is provided for forming an inverted image of an object, and the second liquid crystal lens is provided for inverting the inverted image, thereby forming an erecting image of the object.

Description

technical field [0001] The present invention relates to liquid crystal microlenses as means for forming images in lens arrays of contact sensors of scanners and facsimile machines. Background technique [0002] It is generally known that features such as Figure 14 and Figure 15 A contact sensor of a similar structure. [0003] refer to Figure 14 , the sensor 110 has a frame 108 in which a linear light emitting element (LED) array 105, a lenticular lens array 106 and a light receiving element array 104 are installed. The light receiving element array 104 includes a substrate 103 formed on the bottom of a frame 108, a protective film 102 mounted on the substrate 103, and a sensor integrated circuit (IC) 101 including a plurality of photoelectric converters. On top of the frame 108 is mounted a transparent plate 107, on which a text sheet 109 is mounted. [0004] In operation, a beam of light from LED array 105 illuminates text sheet 109 . Light beams scattered and refle...

AI Technical Summary

Problems solved by technology

[0019] (1) In order to manufacture the lenticular lens, it is necessary to provide equipment for ion conversion treatment, thereby increasing the production cost

[0020] (2) The combination distance TC between the original object and the formed image can only be selected from the lenticular lens product line

Therefore, the distance TC cannot be shortened to make a thin contact type sensor

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