ES2940982A1 - Visual measurement device for rifle shooters with or without visual impairment (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Visual measurement device for rifle shooters with or without visual impairment. The present invention refers to a device for evaluating the visual conditions of a rifle shooter in real shooting conditions, even in the shooting range itself. The device has a front face, which includes a central opening (1) with supports (3) to hold lenses and/or colored filters, a scale in degrees (2) from 0 to 180°, a level (5) and two occluders (4) located on both sides of the central opening; and a rear face that includes fastening elements of the device to the diopter of the carbine. The invention also relates to a system incorporating trial lenses and colored filters. (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

Visual measurement device for rifle shooters with or without visual impairment

TECHNIQUE SECTOR

The present invention falls within the sector of visual evaluation devices and/or color filters with application in optics and optometry. More specifically, it refers to the sector of devices to measure the compensation of the visual measurement that the user needs in real shooting conditions.

BACKGROUND OF THE INVENTION

The athlete who uses a precision carbine, or the Olympic shooter, may have a common visual problem, such as any ametropia (nearsightedness, farsightedness or astigmatism) or presbyopia, which can be compensated by lenses in glasses, contact lenses or with a lens that It adapts to the diopter or front viewfinder and solves the visual problem of the user. The adaptation of this lens to the diopter or front sight is perfectly compatible with the "Special technical regulations for 300 m rifle, 300 m standard rifle, 50 m rifle and 10 m air rifle", of the ISSF ( -International Shooting Sport Federation- international organization Olympic shooting), in force since 10/15/2017

The measurements to determine the characteristics that the lens that adapts to the diopter or front viewfinder must have are usually carried out in an optician, using optometry to obtain the final result that compensates for ametropia, or in an ophthalmologist's office. Lens treatment, however, is only the responsibility of the optician-optometrist and must ensure perfect compensation, but also a correct adaptation to the rifle to obtain the best visual conditions with the equipment with which you will carry out your sporting activity.

People with significant visual impairments can also participate in sport shooting. The differences with the visually impaired with a visual acuity not greater than 2.6 logMAR, lie in a greater difficulty to improve their vision to normal limits for sport shooting.

On the other hand, the athlete with greater visual acuity than 2.6 logMAR would belong to another discipline for the blind and would use a special device with sound for the competition and would not require this treatment.

It is recommended to measure the visual problems of the shooters in the optics, in a monocular way over the dominant eye, and adapting the measurement distances to the distances that the weapon requires to correctly see the sights and/or the target. Sometimes, it is even recommended that the user take his weapon to the optician so that the measurement is as real as possible.

On the other hand, color is a property of light transmitted, reflected, or emitted by an object that depends on its wavelength. Color can enhance contrast and allow objects that would otherwise be indistinguishable from their background to be identified and located, which is why the use of filters is frequent in this sport. Depending on the type of shooting, the lighting conditions and the characteristics of the shooter, the optician may advise the use of filters of a certain color that will modify the spectral distribution of the light that reaches the user's eye.

Although some progress has been made, it is still necessary to measure shooters' refractive problems as accurately as possible, as well as measure their color perception, to compensate for both aspects and improve the visual ability of both visually impaired and non-vision shooters. them, thus also improving their sports performance.

EXPLANATION OF THE INVENTION

Visual measurement device for rifle shooters with or without visual impairment.

To improve the evaluation of the visual abilities of the shooters, a device has been developed to measure the visual acuity and the ability to distinguish the colors of a shooter in real shooting conditions. We propose a device prepared to be able to adhere it to the diopter of the carbine and check in the same shooting range the refraction measured either in the optics or directly in the sports facilities, with the necessary optometric equipment for it. This device is placed on the diopter in the same way that the corrective lens of choice will be placed later.

The device has a front face (closest to the shooter's eye) and a rear face (furthest from the shooter's eye).

On the front face, the device includes:

- a central opening with supports to hold lenses and/or colored filters with which to assess the shooter's vision;

- a scale in degrees from 0 to 180° to assess the possible astigmatism of the shooter;

- a level to level the scale of degrees;

- Two occluders, one for the left eye and one for the right eye, located on both sides of the central opening.

On the rear face, the device includes fastening elements to the diopter of the carbine. Preferably, the fastening element is an adjustable washer with a through bolt.

After direct or indirect compensation in the optics, the necessary lenses are arranged in front of the central opening of the device, inserting as many lenses and filters as necessary. If the measurement is directly on the device, the supports will be used to leave the lenses ready to verify that the shooter's vision is improved.

Once the device is attached to the rifle's front sight, the adjustable washer, together with the information offered by the level, serve to control that the degree scale is correctly aligned to accurately measure the axis of astigmatism in cases where that the shooter presents this ametropia.

The lateral occluders are arranged on both sides of the central opening to cover the eye that the shooter does not use for the shot, and can be used for right-handed and left-handed users alike. At the same time, they make up the body of the device.

The device allows the test lenses to be placed in the scope of the weapon itself, where the lens attached to the scope of the weapon will be placed, with the possibility of being able to subjectively measure the spherical, cylindrical power and its axis, whether the shooter is right-handed or left-handed. eye to aim The invention also refers to a system that includes the device described and a set of trial lenses, with the possibility of also including a set of colored filters.

BRIEF DESCRIPTION OF THE DRAWINGS

To complement the description that is being made and in order to help a better understanding of the characteristics of the invention, a set of drawings is attached as an integral part of said description where, for illustrative and non-limiting purposes, represented the following:

Figure 1.- Visual measurement device for rifle shooters with or without visual impairment with: central opening (1) to look through, degree scale (2) from 0 to 180°, supports (3) for lenses, two occluders (4) for right-handed and left-handed users in a single piece that make up the body of the device (44) and a level (5) to keep the scale aligned with the ground. Front face view.

Figure 2.- Visual measurement device for rifle shooters with or without visual impairment with: central opening (1), adjustable washer (7) that opens and closes thanks to the through screw (6). Back side view.

Figure 3.- Detail of the fastening elements to the carbine diopter, showing the opening and closing of the through screw (6).

PREFERRED EMBODIMENT OF THE INVENTION

A list of the different elements represented in the figures that make up the invention is provided below:

1 = Center opening

2 = Scale in degrees

3 = Lens holders

4 = Occluders

44 = Device body

5 = Level

6 = Through bolt

7= Adjustable washer

Example 1.

A device was made with a circle that has a central opening (1) 35 mm in diameter, made of rigid recyclable plastic material and 1.5 mm thick, made of polyethylene terephthalate. On both sides of the central opening (1) two separate occluders (4) made of the same material were placed which, joining everything around the central opening, formed the body (44) of the device. On the central opening (1), in the body of the device (44), a degree scale (2) was printed, from 0 to 180°. On the other hand, three supports (3) were attached to the interior of the central opening to hold lenses: two 7 mm long side pieces and a 3 mm long lower piece, all of them 1.5 mm in diameter. thickness and made with the same plastic material as the rest of the device.

Embedded in one of the occluders and on the front face, a level (5) was included to keep the device aligned with the ground and correctly adjust the axes of astigmatism.

On the rear face of the device, an adjustable washer (7) with a variable diameter from 37 mm to 80 mm was attached, in order to adapt it to different sport rifle front sights. The thickness of the adjustable washer (7) was 2 mm and the depth was 40 mm in the same plastic material.

The opening of the adjustable washer (7) is possible by means of a through bolt (6) that clamps onto the adjustable washer itself (7) with a nut made of the same plastic material attached to the adjustable washer (7) and with a thread pitch equivalent.

Example 2.

The visual measurement device for rifle shooters with or without visual impairment is useful for the measurement of ametropia and color defect of any human being in the dominant eye or with which he shoots at the target. To verify this, 2 shooters from the Spanish Olympic shooting team were selected in several shooting measurement and test sessions, in the shooting gallery of the High Performance Center where they train and where the optometrist optician went with the device described in the example 1 and with a set of trial lenses and colored filters.

The comfort in the change of lenses according to the perception in the improvement of acuity visual and sharpness of the tunnel of the weapon, which is used to aim at the target, and the combination of filters of different wavelengths to avoid the loss of contrast of the center of the target, provided an important speed in the shooters. The device described in example 1 allowed, in vivo, to ensure improvement and the possibility of continuing training at the highest possible level, using the visual measurement device and leaving the new compensation conditions (combination of sphere, cylinder and filters) over time. necessary on the weapon without having to wait for the arrival of a traditionally prescribed ultimate lens.

Claims (3)

1. Visual measurement device for rifle shooters with or without visual impairment that presents: - a front face including: • a central opening (1) with supports (3) to hold colored lenses and/or filters; • a scale in degrees (2) from 0 to 180°; • a level (5); • two occluders (4) located on both sides of the central opening; - A rear face that includes elements for fastening the device to the diopter of the carbine. Device according to claim 1, in which the fastening elements of the device include an adjustable washer (7) with a through bolt (2). 3. System for the visual measurement of rifle shooters with or without visual impairment that includes a device as defined in claims 1-2 and a set of test lenses and/or colored filters.