News Column

"Imaging Lens, and Portable Electronic Apparatus Including the Same" in Patent Application Approval Process

August 28, 2014



By a News Reporter-Staff News Editor at Politics & Government Week -- A patent application by the inventor Liao, Chen-Cheng (Taichung City, TW), filed on December 10, 2013, was made available online on August 14, 2014, according to news reporting originating from Washington, D.C., by VerticalNews correspondents.

This patent application has not been assigned to a company or institution.

The following quote was obtained by the news editors from the background information supplied by the inventors: "The present invention relates to an imaging lens, and a portable electronic apparatus including the same.

"In recent years, as use of portable electronic devices (e.g., mobile phones and digital cameras) becomes ubiquitous, much effort has been put into reducing dimensions of portable electronic devices. Moreover, as dimensions of charged coupled device (CCD) and complementary metal-oxide semiconductor (CMOS) based optical sensors are reduced, dimensions of imaging lenses for use with the optical sensors must be correspondingly reduced without significantly compromising optical performance.

"U.S. Pat. No. 8,000,031 discloses a conventional imaging lens with five lens elements. In a first embodiment disclosed therein, a distance between an object-side surface of a first lens element and an image plane is 6.499 mm.

"U.S. Pat. No. 7,826,151 discloses a conventional imaging lens with five lens elements. In a first embodiment disclosed therein, a distance between an object-side surface of a first lens element and an image plane is 7.467 mm.

"U.S. Pat. No. 7,502,181 discloses a conventional imaging lens with five lens elements. In a first embodiment disclosed therein, a distance between an object-side surface of a first lens element and an image plane is 8.267 mm.

"The aforementioned conventional imaging lenses go against the trend toward reducing dimensions of mobile phones due to their longer system lengths."

In addition to the background information obtained for this patent application, VerticalNews journalists also obtained the inventor's summary information for this patent application: "Therefore, an object of the present invention is to provide an imaging lens having a shorter overall length while maintaining good optical performance.

"According to one aspect of the present invention, an imaging lens comprises an aperture stop, first, second, third, fourth and fifth lens elements arranged from an object side to an image side in the given order. Each of the first, second, third, fourth and fifth lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side.

"The first lens element has a positive refractive power.

"The image-side surface of the second lens element has a concave portion in a vicinity of a periphery of the second lens element.

"The object-side surface of the third lens element has a concave portion in a vicinity of a periphery of the third lens element.

"The object-side surface of the fourth lens element has a convex portion in a vicinity of an optical axis of the imaging lens. The image-side surface of the fourth lens element has a concave portion in a vicinity of the optical axis.

"The fifth lens element is made of a plastic material, and the image-side surface thereof has a concave portion in a vicinity of the optical axis.

"The imaging lens does not include any lens element with refractive power other than the first, second, third, fourth and fifth lens elements.

"Another object of the present invention is to provide a portable electronic apparatus having an imaging lens with five lens elements.

"According to another aspect of the present invention, a portable electronic apparatus includes a housing and an imaging module. The imaging module is disposed in the housing, and includes the imaging lens of the present invention, a barrel on which the imaging lens is disposed, a seat unit on which the barrel is disposed, and an image sensor disposed at the image side and operatively associated with the imaging lens for capturing images.

BRIEF DESCRIPTION OF THE DRAWINGS

"Other features and advantages of the present invention will become apparent in the following detailed description of the preferred embodiments with reference to the accompanying drawings, of which:

"FIG. 1 is a schematic diagram to illustrate the structure of a lens element;

"FIG. 2 is a schematic diagram that illustrates the first preferred embodiment of an imaging lens according to the present invention;

"FIG. 3 shows values of some optical parameters corresponding to the imaging lens of the first preferred embodiment;

"FIG. 4 shows values of some parameters of an optical relationship corresponding to the imaging lens of the first preferred embodiment;

"FIGS. 5(a) to 5(d) show different optical characteristics of the imaging lens of the first preferred embodiment;

"FIG. 6 is a schematic diagram that illustrates the second preferred embodiment of an imaging lens according to the present invention;

"FIG. 7 shows values of some optical parameters corresponding to the imaging lens of the second preferred embodiment;

"FIG. 8 shows values of some parameters of an optical relationship corresponding to the imaging lens of the second preferred embodiment;

"FIGS. 9(a) to 9(d) show different optical characteristics of the imaging lens of the second preferred embodiment;

"FIG. 10 is a schematic diagram that illustrates the third preferred embodiment of an imaging lens according to the present invention;

"FIG. 11 shows values of some optical parameters corresponding to the imaging lens of the third preferred embodiment;

"FIG. 12 shows values of some parameters of an optical relationship corresponding to the imaging lens of the third preferred embodiment;

"FIGS. 13(a) to 13(d) show different optical characteristics of the imaging lens of the third preferred embodiment;

"FIG. 14 is a schematic diagram that illustrates the fourth preferred embodiment of an imaging lens according to the present invention;

"FIG. 15 shows values of some optical parameters corresponding to the imaging lens of the fourth preferred embodiment;

"FIG. 16 shows values of some parameters of an optical relationship corresponding to the imaging lens of the fourth preferred embodiment;

"FIGS. 17(a) to 17(d) show different optical characteristics of the imaging lens of the fourth preferred embodiment;

"FIG. 18 is a table that lists values of parameters of other optical relationships corresponding to the imaging lenses of the first to fourth preferred embodiments;

"FIG. 19 is a schematic partly sectional view to illustrate a first exemplary application of the imaging lens of the present invention; and

"FIG. 20 is a schematic partly sectional view to illustrate a second exemplary application of the imaging lens of the present invention."

URL and more information on this patent application, see: Liao, Chen-Cheng. Imaging Lens, and Portable Electronic Apparatus Including the Same. Filed December 10, 2013 and posted August 14, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=5041&p=101&f=G&l=50&d=PG01&S1=20140807.PD.&OS=PD/20140807&RS=PD/20140807

Keywords for this news article include: Patents.

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Source: Politics & Government Week


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