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Researchers Submit Patent Application, "Lens for Sighting, and Sighting System Using Same", for Approval

June 26, 2014



By a News Reporter-Staff News Editor at Politics & Government Week -- From Washington, D.C., VerticalNews journalists report that a patent application by the inventors Lim, Do Hyeon (Changwon-si, KR); Lee, Sang Ik (Incehon, KR), filed on February 10, 2012, was made available online on June 12, 2014.

No assignee for this patent application has been made.

News editors obtained the following quote from the background information supplied by the inventors: "The present invention relates to a sight and more particularly, to a lens for sighting which is capable of rapid and accurate aiming by causing a shooter to perceive a light point even more clearly while reducing a range of error caused by a reflecting lens, and a sighting system using the same.

"In general, a sight is referred to as an optical device attached to a gun for aiming at a target.

"A traditional aiming method using line-of-sight alignment of a backsight and a foresight has demerits in that it has a big error due to vibration and shaking, disadvantage in near field and rapid aiming, immersion of a line-of sight into the backlight and foresight on the nature of naked eyes having the disability of multifocus, which makes the target cloudy.

"Accordingly, an optical scope has been developed to alleviate troublesomeness of the line-of-sight alignment and increase precision of the line-of-sight alignment. The optical scope may be generally classified into a prism type and a relay lens type, both of which use an objective lens, an eyepiece and a reticle for magnification of the target and exact aiming by the reticle. However, the optical scope also has an error due to vibration and shaking and a restriction on rapid aiming. To overcome this problem, an optical sight such as a dot sight replacing the reticle with a light point has been introduced and is being widely used.

"FIG. 1 is a schematic view showing a structure of a typical dot sight.

"As shown, the general dot sight includes a cylindrical housing 2 attached to a gun, a transparent window 4 sealing one end of the housing 2 directing to a target, a light emitting element 6 mounted on one inner side of the housing 2 and serving as a point light source such as an LED (Light emitting diode) emitting light having a specific wavelength band in the direction of the transparent window 4, and a reflecting lens 8 with a specific curvature obliquely interposed between the light emitting element 6 and the transparent window 4 within the housing 2 and selectively reflecting light having a specific wavelength band.

"As a result, the light emitted from the light emitting element 6 is reflected by the reflecting lens 8 and is recognized as a highly bright light point in the line-of-sight of a shooter. Accordingly, when overlapping the light point with the target with the line-of sight concentrated on the target, the shooter can exactly aim at the target rapidly and correctly with no tunnel vision. For reference, the parallelism of the light point is adjusted to coincide with a bullet firing shaft of a gun barrel.

"However, typical optical sights using the light point of the above-described dot sight have a wide range of error depending on precision and inclination of the reflecting lens 8.

"As one example, since the light point viewed by the shooter through the above-described dot sight is an image formed on the reflecting lens 8 instead of the light emitting element 6, if the curvature or inclination of the reflecting lens 8 are incorrect, an error between the parallelism of the light point and the bullet firing shaft of the gun barrel may be increased to greatly lower the reliability of aiming. In addition, the reflecting lens 8 of the typical dot sight has a special coating film to selectively reflect light having a specific wavelength band. However, if there is a minute variation such as a refractive index difference due to the coating film, it is highly likely to distort the target or the light point or produce undesired diffused reflection on the nature of the reflecting lens disposed oblique to the line-of-sight of the shooter.

"Accordingly, the optical sight using the light point requires precise machining and arrangement of the reflecting lens, which may result in increase in the total number of processes and manufacture costs."

As a supplement to the background information on this patent application, VerticalNews correspondents also obtained the inventors' summary information for this patent application: "To overcome the above problems, it is an object of the present invention to provide a lens for sighting which can be applied to not only a dot sight but also all kinds of optical sights using a light point and is capable of causing a shooter to perceive a light point even more clearly while reducing a range of error caused by a reflecting lens.

"It is another object of the present invention to provide a sighting system which is capable of exactly aiming at a target even more rapidly and correctly using the above lens for sighting regardless of vibration and shaking.

"To achieve the above objects, according to an aspect of the invention, there is provided a lens for sighting, including: a first lens which is inserted in a housing of a sight fixed to a gun and is disposed perpendicular to a line-of-sight of a shooter; a light emitting element which is mounted on one surface or the other surface of the first lens and emits light having a specific wavelength band; and first and second transparent wirings which are stacked on the one surface or the other surface of the first lens and supply power to the light emitting element.

"Preferably, the light emitting element is one of an LED of a SMD (Surface Mount Device) type mounted on the one surface or the other surface of the first lens in a COG (Chip On Glass) manner and a multi-layered organic electroluminescent element stacked on the one surface or the other surface of the first lens, and the first and second transparent wirings are made of one of ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide) and carbon nano tube.

"According to another aspect of the invention, there is provided a sighting system for dot sight, including: a cylindrical housing which is fixed to a gun and has one end direction to a shooter and the other end directing to a target; a first lens which is inserted in the housing to seal the one end of the housing, with a light emitting element mounted on one surface or the other surface of the first lens; a transparent window which is inserted in the housing to seal the other end of the housing; and a second lens which is interposed perpendicular to a line-of sight of the shooter between the first lens and the transparent window within the housing and selectively reflects light having a specific wavelength band toward the shooter.

"Preferably, the second lens is a reflecting lens.

"According to another aspect of the invention, there is provided a sighting system for bow sight, including: a housing which is fixed to a gun and provides a lens hole; and a first lens which is inserted in the lens hole, with a light emitting element mounted on one surface or the other surface of the first lens.

"According to the present invention, the lens for sighting can contribute to stable feed of power into the light emitting element mounted on the outer surface of the lens for sighting through the first and second transparent wirings, without hiding the line-of-sight of the shooter,

"In addition, according to the present invention, since the lens for sighting can replace an inclined reflecting lens, which acts as a main cause of various errors in conventional optical sights, with a vertical reflecting lens, it is possible to prevent diffused reflection as well as distortion of the light point or the target and provide even more stable collimation.

"Further, according to the present invention, the lens for sighting has high applicability since it can be employed for all kinds of sights using a light point, including magnification-free optical sights such as dot sights.

"Furthermore, according to the present invention, the dot sight can prevent diffused reflection while causing the shooter to easily and clearly perceive the light point at all times through the first and second lenses disposed perpendicular to the line-of-sight of the shooter.

"Moreover, according to the present invention, the bow sight is capable of rapidly and correctly aiming at the target since it can cause the shooter to directly perceive the light point through the first lens and the light emitting element mounted thereon, without hiding the line-of-sight of the shooter, instead of a pin hiding the line-of-sight of the shooter.

BRIEF DESCRIPTION OF THE DRAWINGS

"The above and/or other aspects and advantages of the present invention will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

"FIG. 1 is a schematic view of a typical dot sight.

"FIG. 2 is a schematic view of a dot sight to which a sighting lens according to the present invention is applied.

"FIG. 3 is a plan view of the sighting lens according to the present invention.

"FIG. 4 is a sectional view taken along line IV-IV in FIG. 3.

"FIG. 5 is a perspective view of a bow sight to which the sighting lens according to the present invention is applied.

"FIG. 6 is a schematic view of the bow sight to which the sighting lens according to the present invention is applied."

For additional information on this patent application, see: Lim, Do Hyeon; Lee, Sang Ik. Lens for Sighting, and Sighting System Using Same. Filed February 10, 2012 and posted June 12, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=4491&p=90&f=G&l=50&d=PG01&S1=20140605.PD.&OS=PD/20140605&RS=PD/20140605

Keywords for this news article include: Patents.

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Source: Politics & Government Week


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