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Lens to assist in shooting of a gun

Lens to assist in shooting of a gun description/claims

The related art of interest describes various adaptive lens devices, but none discloses the present invention. There is a need for an inexpensive device for viewing the sight on the end of a rifle to avoid the necessity of using eyeglasses with corrective lenses while sighting a rifle. Alternatively, the present invention allows a user, who normally uses bifocals or other corrective lenses, to insert a lens that is compatible with their progressive part of the eyeglass prescription. The related art will be discussed in the order of perceived relevance to the present invention.

U.S. Pat. No. 3,131,477, issued on May 5, 1964 to Robert S. Thomas, describes a protective rifle sight covering comprising a plastic or rubber sleeve that retains a transparent lens or disc made from any suitable material, such as plastic or glass, on a telescopic rifle sight. The device is designed to overcome the problem of cleaning the optical lenses of a telescopic sight which are recessed within the telescope tube, and can become foggy or obstructed in inclement weather. The device attaches the transparent lens to the scope by a press fitted or friction fitted sleeve, an internally threaded ring, an externally threaded ring, or an inner end portion sealed within the end of the sight by an O-ring.

U.S. Pat. No. 4,119,984, issued on Oct. 10, 1978 to Cyril Zajac, describes an eyepiece for use in conjunction with a viewfinder of a camera comprising a plastic and rubber tube with a prescription lens held within the tube by an O-ring that has an adapted clip that snap fits to the viewfinder. The device permits users to view the object being photographed through a lens that fits their prescription without using eyeglasses.

U.S. Pat. No. 5,299,067, issued on Mar. 29, 1994 to Hihn R. Kutz et al., describes an auxiliary lens attachment comprising a sectional tube that can have a prescription or colored lens installed within the tube. The attachment is designed to slide onto the viewing end of a rifle scope. The lens is secured between two portions of a separable sleeve that threadably engage one another and require a distance adjusting member in-between. The device is distinguishable for its multiple sleeves and an adjusting member.

U.S. Pat. No. 5,495,676, issued on Mar. 5, 1996, and U.S. Pat. No. 5,561,563 to M. Gaines Chestnut et al., describe a cross-polarization method and device for a hinged lens cap assembly on both ends of a firearm scope. The device is distinguishable for requiring a hinged lens.

U.S. Pat. No. 5,572,795, issued on Nov. 12, 1996 to Daniel J. Kregloh, describes a magnification device lens assembly comprising a lens-less assembly having three different diameters increasing in size from the eye to the eyepiece lens of a rifle scope. The device is made from rigid plastic material for slidably mounting or can be threaded on the eyepiece. The device is distinguishable for not requiring any additional lens.

U.S. Pat. No. 5,835,289, issued on Nov. 10, 1998 to James M. Berry, describes an auxiliary lens attachment to correct astigmatism for various optical devices comprising a threaded lens attachment containing a prescription lens inserted between the eyepiece and the objective lens. The device is distinguishable for requiring the insertion between two optical members.

U.S. Pat. No. 1,508,043, issued on Sep. 9, 1924 to Frank L. Barrows, describes an optical attachment for various optical instruments comprising a lens mount housing the auxiliary prescription lens between a felt ring. The lens mount is mounted on a sleeve with spring clips. The device is distinguishable for its lens mounted in a rigid mounting with different structural features.

U.S. Pat. No. 3,753,611, issued on Aug. 21, 1973 to Ejvind Ebbesen, describes a bifocal magnifying glass device to be held in front of one eye comprising one or more turnable lens systems with different fields of vision for repairing watches. A rigid collar contains a fixed magnifying glass and a turnable semicircular lens in the rear. The device is distinguishable for its use independent of another optical device and the inclusion of a rotatable lens.

U.S. Pat. No. 4,936,667 issued on Jun. 26, 1990, to Wolf-Dieter Rohr et al. describes a binocular microscope attachment for correction of ametropia comprising a pair of rigid holders slipped over and frictionally by the microscope's binocular eyepiece tubes. Each holder has a retainer for receiving eyeglass lenses appropriate for correcting the user's ametropia problem. The device is distinguishable for rigid holders for the corrective lens.

U.S. Pat. No. 5,365,670, issued on Nov. 26, 1994 to Vernon W. Klimochko, describes a hunting scope with an enhanced magnification lens accessory comprising a lens structure for mounting on a forward end of a hunting scope for magnification. The lens is supported by a telescoping tube which has a clamp ring attached to the opposite end. The device is distinguishable for its telescopic tube structure and clamp ring.

None of the above inventions and patents, taken either singularly or in combination, is seen to describe the instant invention as claimed. Thus, a corrective lens for a rifle which is economical and useful for eliminating the use of especially bifocal or reading eyeglasses is desired.

The present invention is directed to a readily removable optic lens for a rifle which enables a user, e.g., a hunter, if a wearer of eyeglasses, to dispense with the eyeglasses and still use the rifle sight.

Many persons desire to use a rifle without employing a telescopic scope. They prefer to use the sight that is typically mounted on the upper portion of the barrel near the exit point of a rifle barrel. When a person wears corrective eyeglasses, the position of the person's head sometimes alters the line of vision between the person's eye, the corrective lens, and the rifle sight. This is because a person may not always position their head in optimal location for seeing through an eyeglass lens and accurately viewing a rifle sight.

The present invention addresses this difficulty by fixing a lens on the proximal (i.e., end closer to the user) end of a rifle receiver. A rifle receiver is the pat of the rifle closest to the user. The mounting is such that the lens in a fixed position provides a user with the ability to use the rifle sight and still maintain a proper focus.

In one embodiment the present invention comprises an article providing a corrective lens for a rifle comprising: a. a base configured to be mounted on a rifle; b. a lens holder affixed to said base;

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Quick coupling particularly for the stock of a portable weapon
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Telescopic sight optical glare reduction device
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