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Minisized imaging lens

A lens and miniature technology, applied in the direction of optical components, optics, instruments, etc., can solve the problems of long overall length, loss of competitiveness, and heavy weight of the lens, and achieve the effect of low tolerance sensitivity, reduced tolerance sensitivity, and compact structure

Inactive Publication Date: 2006-12-13
ASIA OPTICAL CO INC
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  • Abstract
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  • Claims
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Problems solved by technology

However, in this form, the center of the surface is mostly very sensitive, and the form of one glass lens plus two plastic lenses not only loses competitiveness in terms of price, but also makes the overall length of the lens still longer, and the weight is also due to the glass lens. while still heavier

Method used

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Embodiment Construction

[0030] Such as figure 1 Shown is the optical structure diagram of the micro imaging lens of the present invention, the micro imaging lens includes a first lens 1 with a positive diopter and a second lens 2 with a negative diopter in order from the object side to the image side, so that light can pass through the first lens After the lens 1 and the second lens 2, focus on a CCD (Charge Coupled Device, Charge Coupled Device) or CMOS (Complementary Metal Oxide Semiconductor, Complementary Metal Oxide Semiconductor) image sensor 4 (imaging surface) to obtain a clear image . Wherein, the first lens 1 includes a first surface 11 facing the subject and a second surface 12 facing the imaging surface, the first surface 11 is a concave surface in a concave configuration relative to the subject, and the second surface 12 is a convex surface in a convex configuration relative to the imaging surface, so that the first lens 1 is in a half-moon shape, and at least one of the first and secon...

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Abstract

The invention discloses a micro view-finding lens which comprises a first aspheric surface lens with positive diopter and a second aspheric surface with negative diopter, wherein the first lens is a lunes lens projecting to the imaging plane, which includes the concave plane against to the object and the convex plane opposite to the imaging plane for enlarging light beam on the concave plane and getting larger area on the convex plane to correct image difference and low error sensitivities. The second lens is a negative lens which employs aspheric design to compensate color difference, correct positive axle image difference and shorten the general length of the optical system.

Description

【Technical field】 [0001] The invention relates to a miniature imaging lens, in particular to a miniature imaging lens with high performance, low cost and small size, which is composed of fewer lenses and is suitable for use in mobile phones and thin digital cameras. 【Background technique】 [0002] The integration of mobile data devices such as mobile phones, personal digital assistants (PDAs) and photoelectric technology has become one of the trends in today's technological development, and camera phones are a typical representative of this technology trend. As far as the design is concerned, in order to be portable and meet the requirements of humanization, the imaging lens of the camera phone not only needs to have good image quality, but also needs to be small in size and low in cost. Therefore, unlike the adjustable focus and variable focus lenses of traditional cameras, camcorders, and general digital cameras, the imaging lenses used in camera phones are much smaller in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B9/04G02B13/18
Inventor 廖陈成
Owner ASIA OPTICAL CO INC
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