The patent's inventors are Tsai, Tsung-Han (Taichung, TW); Huang, Hsin-Hsuan (Taichung, TW).
This patent was filed on
From the background information supplied by the inventors, news correspondents obtained the following quote: "The present disclosure relates to an optical image cap ring system. More particularly, the present invention relates to a miniaturized optical image capturing system applicable to electronic products.
"In recent years, with the popularity of mobile products with camera functionalities, a demand for optical system is increasing. A photosensitive sensor of a conventional optical system is typically a CCD (Charge-Coupled Device) or a CMOS (Complementary Metal-Oxide-Semiconductor) sensor. As advanced semiconductor manufacturing technologies have allowed a pixel size of sensors to be reduced and the optical systems have gradually evolved toward and a field of higher megapixels, there is an increasing demand for better image quality.
"A conventional optical system employed in a portable electronic product, as shown in U.S. Pat. No. 7,869,142, mainly adopts a structure of four lens elements. Due to the popularity of mobile products with high-end specifications, such as smart phones and PDAs (Personal Digital Assistants), requirements of higher megapixels and better image quality have increased rapidly. However, the conventional optical systems cannot satisfy the requirements of high-end optical systems with camera functionalities.
"A conventional optical image lens assembly with many lens elements is usually too bulky to have its size being miniaturized; therefore, it is not its applicable to portable electronic products with a compact size. An optical image lens assembly with five lens elements, such as 'Imaging Lens Assembly' disclosed in U.S. Pat. No. 8,000,030, lacks good ability to correct high order aberrations and off-axis aberrations. Moreover, the space arrangement, the distribution of refractive power and the design of lens surface are not favorable to have its total track of length being effectively shortened thereof and it is thereby not easy to have a compact size with good image quality."
Supplementing the background information on this patent, VerticalNews reporters also obtained the inventors' summary information for this patent: "In one aspect of the present disclosure, the optical image capturing system in order from an object side to an image side, includes a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. The first lens element with positive refractive power has a convex object-side surface. The second through seventh lens elements all have refractive power. The sixth lens element has an object-side surface and an image-side surface which are both aspheric. The seventh lens element has an object-side surface and an image-side surface which are both aspheric, wherein the image-side surface of the seventh lens element changes from concave at a paraxial region thereof to convex at a peripheral region thereof. The optical image capturing system has a total of seven lens elements with refractive power, and an air distance between two adjacent surfaces of any two adjacent lens elements. The optical image capturing system further includes an image sensor, a maximum image height of the optical image capturing system is ImgH, an axial distance between the object-side surface of the first lens element and an image plane is TTL, a focal length of the optical image capturing system is f, a vertical distance from a critical point on the image-side surface of the seventh lens element to an axial vertex on the image-side surface of the seventh lens element is Yc72, and an axial distance from the object-side surface of the first lens element to the image-side surface of the seventh lens element is Td, the following relationships are satisfied: 0.1
"According to another aspect of the present disclosure, the image capturing device includes the foregoing optical image capturing system and an image sensor, wherein the image sensor is connected to the image lens assembly."
For the URL and additional information on this patent, see: Tsai, Tsung-Han; Huang, Hsin-Hsuan. Optical Image Capturing System. U.S. Patent Number 8767315, filed
Keywords for this news article include: Electronics, Semiconductor,
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