KR20140046365A - Dot-sighting device with beam splitter - Google Patents

Abstract

The present invention relates to a dot sight device having a beam splitter. The dot sight device having a beam splitter comprises: a reflector disposed at the inner front of a main scope tube; a beam splitter disposed at the rear of the reflector in the main scope tube in order to have a slanted surface that reflects or penetrates a beam; a dot reticle generator disposed at one side inner circumferential surface of the main scope tube in order to provide a dot reticle beam onto the slanted surface of the beam splitter. The slanted surface of the beam splitter is coated with a film in one or more layers so that the dot reticle beam provided from the dot reticle generator is reflected towards the reflector, the dot reticle beam that is re-reflected from the reflector towards the beam splitter is transmitted towards an observer, and a beam that penetrates through the reflector from an external target and the surroundings is transmitted towards the observer.

Description

Dot-Sight Device with Beam Splitter {DOT-SIGHTING DEVICE WITH BEAM SPLITTER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dot-site apparatus having a beam splitter. More particularly, the dot sight generator and the reflector are disposed in two adjacent surface directions opposite to the inclined plane of the beam splitter so that the optical axis of the reflector is reflected or reflected from the beam splitter. The present invention relates to a dot-site device having a beam splitter capable of minimizing parallax by being parallel to a transmitting optical axis.

The characteristics of a rifle or heavy machine gun depend on whether you can aim quickly and you are aiming precisely at the target. In general, aiming a rifle or heavy machine gun is achieved by aligning the line of sight with the scale. Aiming by alignment of the sight line at the end of the barrel and the scale at the top of the gun body allows precise shooting according to the skill of the user using the firearm.

However, aiming at the scale and the scale alone makes it difficult to align the line of sight even with small vibrations and tremors, and it is also difficult to aim quickly in close range or urgent situations.

In other words, the aim shooting method requires a complicated process and time such as target capture and confirmation, line alignment, and aiming, and the scale and scale itself are so small that they are not only sensitive to small tremors in precise alignment, but also excessively sensitive. If you care about alignment of the line of sight, there is a problem that the eyes are focused on the scale and the scale itself rather than the target or the front situation, narrowing the view required for shooting or handling an emergency situation.

Therefore, in order to cope with such difficulty in line alignment and to increase the accuracy of aiming, a sighting device equipped with a telephoto lens has been proposed. However, in the case of an optical sight equipped with a telephoto lens, when the magnification of the telephoto lens is increased, it is similarly sensitive to small vibrations, and therefore, the rapid aiming still requires a lot of difficulties.

As a result, in order to solve these problems, a dot-site apparatus using a magnification-free or low-magnification lens for an optical sight and eliminating a complicated aiming line and simply using a aiming point has been proposed.

Optical magnification (or low magnification) dot sight aiming devices are simple and quick to aim, and are very useful in emergency situations or at close range. Specifically, the time required for the alignment of the conventional aiming line can be reduced, and the aiming itself can be enough to secure a field of view because only a virtual image of the dot target is positioned on the target. In the end, you can aim quickly and accurately, and you can also secure the surrounding vision needed for context determination.

However, in the conventional dot sight aiming device, since the reflector optical axis of the sighting mirror is inclined with the optical axis of the barrel, the parallax occurs more largely than an optical system in which the reflector optical axis of the sighting mirror coincides with the optical axis of the barrel, thereby securing an area within the allowable parallax. In order to achieve this, there is a disadvantage in that the dot sight is configured by making the distance between the dot target and the reflector farther or making the diameter of the effective reflector smaller.

However, in the case of a conventional dot sight aiming device, as shown in FIG. 1, the dot sight generating unit 5 is positioned outside the most part of the light beams reflected from the reflector so as to prevent the dot sight from occurring. The dot site observer was not detected by an external counterpart by making the light beam irradiated from section 5 not visible. In order to do this, however, the optical axis of the reflector is a principal ray, which is a representative ray of the reflected rays of the reflector forming a dot (a virtual image by the reflector of the dot timetable). (A1 in Fig. 2 (a); each A1 is generally one-half of each A2 formed by the path where the chief ray emitted from the dot sight generator is reflected by the reflector and travels to the dot-site optical axis). Should be inclined to

In this case, as shown in (a) and (b) of FIG. 2, the arrangement of the reflector not inclined with respect to the dot-site optical axis due to the arrangement of the reflecting mirror inclined with respect to the dot-site optical axis (FIG. 2 (a)) Finite ray aberration greater than FIG. 2 (b) occurs, affecting the parallax of the dot to be observed by the observer, and thus the size of the reflector (diameter) and the distance of the reflector from the dot target generator. When compared with the same structure, the arrangement of the reflecting mirrors inclined with respect to the dot-site optical axis (FIG. 2 (a)) has a larger parallax occurrence than the arrangement of reflecting mirrors not inclined with respect to the dot-site optical axis (FIG. 2 (b)).

The excessive occurrence of parallax is due to the initial alignment of the optical axis of the dot sight device and the barrel firing axis of the barrel and the shooting target point, and the more the observer's visual axis with respect to the shooting target point in the reflector is located off the dot site optical axis, There is a problem that causes more and more errors. Therefore, excessive occurrence of parallax naturally lowers the accuracy of the target when using the dot site.

In addition, when the distance between the dot viewing generator and the reflecting mirror is shortened, the parallax increases, so that the amount of parallax is much smaller than that of (a), so that the level is similar to that of (a) of FIG. In the range that maintains the amount of parallax, the distance between the dot target generator 5 and the reflector 7 may be shorter than that of FIG. This makes it possible to downsize the dot site apparatus.

However, in spite of the above advantages, the arrangement structure as shown in FIG. 2 (b) causes the dot target generator 5 to be positioned at the center of the dot sight barrel, thereby causing an obstruction to observation of an external target point. There is a problem of causing trouble in aiming, and since the light generated by the dot target generator 5 is observed by the external target point or the surrounding party, there is a problem that the position of the dot site user is exposed to the other party.

Accordingly, an object of the present invention is to solve such a conventional problem, by disposing a beam splitter between the dot target generator and the reflector to make the optical axis of the reflector parallel to the optical axis reflected or transmitted by the beam splitter. To provide a dot-site device having a beam splitter that can minimize the.

In addition, the beam splitter which prevents the observer from being observed by observing the light of the dot target on the target side by blocking the light of the dot target generating portion passing through the first polarizing portion at the second polarizing portion provided in front of the reflector. In providing a dot-site device having a.

The object is, according to the present invention, a reflector disposed in the inner front of the barrel; and a beam splitter disposed behind the reflector in the interior of the barrel is formed inclined surface that reflects or transmits the light beam; and one side of the inner peripheral surface of the barrel A dot sight generation unit disposed in the beam splitter and providing a dot sight light beam toward the inclined plane of the beam splitter, wherein the inclination plane of the beam splitter includes a dot sight light beam provided from the dot sight generator toward the reflecting mirror. One or more layers of thin film coatings that reflect and transmit the dot sight light reflected back from the reflector toward the beam splitter, while allowing the external target passing through the reflector and light from its surroundings to pass through the viewer It is achieved by a dot site apparatus having a beam splitter, characterized in that consisting of.

Here, the optical axis of the reflector is preferably parallel to the optical axis reflected or transmitted by the beam splitter.

In addition, the beam splitter is preferably made of a beam splitting plate or a beam splitting prism.

The reflector may be a concave flat lens having a single reflecting surface, and a connecting member made of the same material as the reflector may be interposed between the reflector and the beam splitter to configure the reflector and the beam splitter as one module. .

In addition, the reflector is preferably made of a singlet or doublet lens having a single reflective surface.

In addition, the dot target generating unit is preferably made of a video element for providing a video image.

The display apparatus may further include a display unit disposed at the other side of the inner circumferential surface of the barrel to provide an image image toward the inclined surface of the beam splitter.

In addition, at least one of the display unit and the beam splitter, and between the beam splitter and the viewer's viewpoint, the image image provided from the display unit is farther than the reduced distance along the optical path from the observer to the display unit. It is preferable to arrange the image magnification optical system to be formed as a virtual image of the image image at a distance.

In addition, the radius of curvature of the refracting surfaces through which the light beam on the optical path from the target to the observer's eye passes is seen in the size and naked eye at the observer's retina by light from an external target passing through the reflector and the beam splitter to the observer. It is preferable that the ratio of the size in the retina at the time is in the range of 1 ± 0.015.

In addition, the coating of the inclined surface of the beam splitter reflects the light beam from the dot target provided from the dot target generator toward the reflector, and then reflects the light from the reflector back toward the beam splitter and proceeds toward the observer, thereby retina of the observer's eye. And the light beam from the external target passes through the reflecting mirror and the inclined surface of the beam splitter in order to form an image of the external target on the retina of the observer's eye. When the viewer superimposes the image of the dot table, it is preferable that the transmittance of each wavelength is made of one or more thin films such that the transmittance of each wavelength has a deviation within 30% from the average value of the transmittance of each wavelength with respect to the wavelength of the visible light region.

The polarizer may further include a first polarizer disposed between the dot target generator and the beam splitter, and a second polarizer disposed in front of the reflector.

In addition, the first polarizing part and the second polarizing part may be made of linear polarizers having polarization directions orthogonal to each other so that light rays of the dot target generating part passing through the first polarizing part are blocked by the second polarizing part. .

In addition, the beam splitter transmits the first polarized part and the light incident on the inclined plane is reflected toward the reflector, and the light beam reflected from the reflector and incident on the inclined plane (the light directed toward the observer) is transmitted. prism: preferably made of Polarization beam splitting prism.

It is preferable that a first quarter wave plate is disposed between the beam splitter and the reflector, and a second quarter wave plate is disposed in front of the reflector.

1 is a cross-sectional view schematically showing a conventional monocular dot sight aiming device,
2 is a conceptual diagram showing the degree of parallax according to the position of the dot time generation unit;
3 is a schematic configuration diagram of a dot-site apparatus having a beam splitter according to a first embodiment of the present invention;
4 is a schematic configuration diagram of a dot-site apparatus having a beam splitter according to a second embodiment of the present invention;
5 is a schematic structural diagram of a dot-site apparatus having a beam splitter according to a third embodiment of the present invention;
6 is a schematic configuration diagram of a dot-site apparatus having a beam splitter according to a fourth embodiment of the present invention;
7 to 8 are schematic configuration diagrams of a dot site apparatus having a beam splitter according to a fifth embodiment of the present invention.

Prior to the description, components having the same configuration are denoted by the same reference numerals as those in the first embodiment. In other embodiments, configurations different from those of the first embodiment will be described do.

Hereinafter, a dot site apparatus having a beam splitter according to a first embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 is a schematic configuration diagram of a dot-site apparatus having a beam splitter according to a first embodiment of the present invention.

The dot-site apparatus having the beam splitter according to the first embodiment of the present invention as shown in the drawings is arranged on one side of the barrel 110, which is arranged in parallel with the barrel on the upper side of the firearm, and the inner peripheral surface of the barrel 110. A dot target generator 120, a reflector 130 disposed in front of the dot target generator 120 inside the barrel 110, and the dot target generator 120 inside the barrel 110. Disposed at an intersection between the reflector 130 and the reflector 130 to reflect the light beam of the dot target provided from the dot target generator 120 in the direction of the reflector 130 and then to the beam splitter 140 from the reflector 130. A beam splitter 140 having a slanted surface 141 for transmitting the light beams of the reflected dot incident light, and a first polarization part disposed between the dot target generator 120 and the beam splitter 140. 151 and the second polarization portion 1 disposed in front of the reflector 130 52).

The dot target generator 120 includes a light emitting device such as an LED and a mask including a dot target shaped light transmitting part positioned in front of the light emitting device. On the other hand, the dot target generator 120 may be made of an image element such as OLED, LCD, LCOS, it is also possible to display the shape of the desired dot target.

The reflector 130 is made of a concave flat lens of negative refractive power having a single reflecting surface reflecting the dot target of the dot target generator 120. In this case, the reflector 130 is connected to the beam splitter 140 by the connecting member 160 may be provided in a module form with the beam splitter 140. Since the connecting member 160 is made of the same material as the reflector 130, the magnification or distortion is generated on the external target visible through the beam splitter 140, the connecting member 160, and the reflector 130, and the surroundings thereof. You can do it.

The beam splitter 140 may be configured as a beam splitting prism in which two rectangular prisms are combined. That is, when a 50% reflective coating is applied to one of the two inclined surfaces 141, which are the boundary surfaces of the two right prism, for example, the beam splitter 140 transmits 50% and reflects 50%. As described above, when the dot target generator 120 and the reflector 130 are disposed on the lower side and the front facing the inclined surface 141 of the beam splitter 140, the optical axis of the reflector 130 is divided into the beam splitter ( The light may be positioned on the same line as the optical axis of the dot target reflected through the inclined surface 141 of the 140 toward the reflecting mirror 130. In addition, although not shown in the drawing, the beam splitter 140 may be configured as a beam separation plate that is disposed obliquely. When the beam separating plate is configured, the transmission and reflection coating may be performed according to the amount of beam required for at least one surface of the flat glass inclined. That is, when the A% reflective coating is applied, the beam splitter 140 transmits (100-A)% of incident light provided to the beam splitter 140 and reflects A%.

The coating of the inclined surface 141 of the beam splitter 140 reflects the light of the dot target provided from the dot target generator 120 toward the reflector and then from the reflector 130 toward the beam splitter 140. The light of the reflected dot target is transmitted to the observer so as to form an image on the dot target in the retina of the observer's eye. In addition, the light rays provided from the external target pass through the reflecting mirror and the inclined surface of the beam splitter in order to form an image on the external target in the retina of the observer's eye. That is, when the observer overlaps the image of the external target and the image of the dot target, the coating of the inclined surface 141 has a transmittance of each wavelength for the wavelength of the visible light region (about 450 to 660 nm). It is preferable that the thin film is formed of one or more thin films so as to have a deviation within 30% from the average value so that the color of the external target and the external view secured from the surroundings does not change significantly.

)와 나안으로 봤을 때의 망막상의 크기(

:상기 반사경과 상기 빔 스플리터가 없는 상태에서 관찰자를 향하는 동일한 외부 목표물로 부터의 광선에 의한 관찰자의 망막에서의 상의 크기)의 비(ratio)인 배율(

) 즉Here, the image size in the observer's retina by light rays from an external target passing through the reflector and the beam splitter toward the viewer (

) And the size of the retina on the eye (

A magnification ratio (ratio) of the image size in the viewer's retina by light rays from the same external target directed at the viewer in the absence of the reflector and the beam splitter

) In other words

---(식 1)

--- (Equation 1)

(미터 단위의 초점거리의 역수)를 갖는 광학계(본 실시예에서는 상기 반사경과 상기 빔 스플리터로 이루어진 광학계)가 존재하면 이 광학계를 통과한 외부 물체의 관찰자의 망막상의 크기(

)가 이 광학계를 통하지 않고 볼 때의 크기(

)와 다르게 되는데, 이의 비율(

)을 안경광학에서는 자기배율

이라 하는데 이를 나타내는 수식은 하기의 식 2와 같이 근사될 수 있다.It is desirable that the radius of curvature of the refracting surfaces through which the light rays on the optical path from the target to the observer's eye are transmitted so that there is little (or nearly 1 times magnification) is achieved. But in front of the observer's eyes

(The reciprocal of the focal length in meters), if there is an optical system (in this embodiment, the optical system composed of the reflector and the beam splitter), the size of the observer's retinal image of the observer of the external object passing through the optical system

Is the size when viewing through this optical system

), The ratio of which is (

In optical optics

This expression may be approximated by Equation 2 below.

--- (식 2)

--- (Equation 2)

(

), 관찰자의 눈에서 광학계의 물측 주평면까지의 거리(m)를

이라 한다.)Where the focal length (m) of the optical system

(

, The distance (m) from the observer's eye to the water plane

It is called.)

은 식 1의

와 동일시 된다. Therefore, self-magnification of Equation 2

Of equation 1

Is identified with

If the size of the retinal image for the same external aiming target is to secure the field of view through the dot site and to the field of view without the dot site, if there is a difference, this means that the field of view with or without the dot site is secured. An urgent need to alternate quickly to the movement of an external aiming target will cause stable fatigue in observing external objects.

Therefore, in the present embodiment, the eye is caused by different image size in rapidly observing the movement of the external aiming target while alternating the viewing situation with or without the dot site by limiting the self-magnification value of the dot site according to Equation 2 described above. To suppress the stable fatigue of.

In other words, by limiting the range of the self-magnification value to 0.985 ~ 1.015 by limiting the size change on the retina of the external object before and after the use of the dot site to within 1.5% to minimize the occurrence of stable fatigue by the user in the use of the dot site according to this embodiment Protect your eyes.

This is based on the theory commonly used in ophthalmic optics that binocular vision is possible up to about 1.5% of the difference in the size of the retina between the two eyes, and binocular vision becomes difficult when about 5% or more. In other words, when the dot site is used, one eye may look through the dot site's reflector and the other eye may not look through the dot site as the environment changes. The tolerance of the difference in the size of the retina of the two eyes, which does not cause aniseikonia, the optical cause, should be within about 1.5%.

If this is applied to the dot site of the present embodiment, it is summarized as in Equation 3 below.

--- (식 3)

--- (Equation 3)

가 된다. That is, the effect of the magnification is the synthetic refractive power of the whole optical system that synthesizes the surface refractive powers of the respective refractive surfaces as shown in Equation 4.

.

--- (식 4)In other words,

--- (Equation 4)

At this time,

---(식 5)

--- (Equation 5)

는

번째 굴절면의 곡률반경(단위 m),

는

번째 굴절면 굴절 후 공간의 굴절률,

는

번째 굴절면 굴절 전 공간의 굴절률) (only

The

Radius of curvature of the first refracting surface in m

The

Refractive index of the space after the first refractive surface refraction,

The

Refractive index of the space before the first refracting plane refraction)

이기 때문에 상기 식 5의 면굴절력이 영(zero)이 되어 식 4의 광학계 전체 굴절력

는 영(zero)이 된다. 그러면 식 2에서 자기배율

이 되어 반사경과 빔 스플리터를 투과하여 관찰자를 향하는 외부 목표물로부터의 광선에 의한 관찰자의 망막에서의 크기와 나안으로 봤을 대의 망막에서의 크기가 실제적으로 동일하게 되는 것이다.If the plane of refraction is flat

Therefore, the surface refractive power of Equation 5 becomes zero, and the total optical power of the optical system of Equation 4 is zero.

Becomes zero. Then the self-magnification in Equation 2

This results in the size of the observer's retina and the size of the retina in the naked eye being substantially equal to each other due to light from an external target passing through the reflector and the beam splitter to the viewer.

)에서 영(zero)이 되어 식 2의 배율이 발생되지 않는다. In addition, as shown in FIG. 3, when the light beams from the external target and its surroundings are incident to the observer's eye through the reflector 130 and the beam splitter 140, all of the refractive surfaces pass through the infinite radius of curvature or the refractive index of the space before and after the refractive surface. The same power will not be able to have refractive power and magnification does not occur. In other words, the surface refractive power in Equation 5

) Is zero, and the power of Equation 2 is not generated.

The first polarizer 151 is disposed between the dot target generator 120 and the beam splitter 140, and the second polarizer 152 is disposed in front of the reflector 130. The first polarizer 151 and the second polarizer 152 are formed of linear polarizers having polarization directions perpendicular to each other. That is, the dot sheet passing through the first polarizing unit 151 is blocked by the second polarizing unit 152 in front of the reflector 130 so that the dot sheet is not observed on the target side.

The operation of the first embodiment of the dotsite apparatus having the beam splitter described above will now be described.

As shown in FIG. 3, the dot target light beam provided by the dot target generator 120 is converted into linearly polarized light while passing through the first polarizer 151 disposed in front of the dot target generator 120. Reflected according to the reflectance of the inclined surface 141 of the splitter 140 and proceeds toward the reflector 130.

Subsequently, the dot target ray reflected back from the reflector 130 and propagated in the reverse direction is transmitted according to the transmittance of the inclined surface 141 of the beam splitter 140 and is incident on the observer's eye to provide the observer with the virtual image of the dot target. .

Here, the light of the dot target transmitted through the reflector 130 toward the target may be observed by the other party around the target, but the second polarizer 151 and the polarization axis are perpendicular to the front of the reflector 130. Since the polarization part 152 is disposed and the light rays of the dot target passing through the first polarization part 151 are blocked by the second polarization part 152, the position of the dot site user may not be exposed to the counterpart.

According to the first embodiment of the present invention, the optical axis of the reflector 130 is arranged on the same line as the optical axis that reflects or transmits the inclined surface 141 of the beam splitter 140, that is, the reflector 130 is installed without tilting. It is possible to minimize the parallax of the light rays passing through the beam splitter 140. Therefore, even if the reflector 130 having a single reflecting surface is applied, excellent performance can be ensured, and the distance between the dot target generator 120 and the reflector 130 can be designed to be short, thereby miniaturizing the device. And there is an advantage that can be reduced in weight.

Meanwhile, in the present embodiment, for example, the beam splitter 140, the first polarizer 151, and the second polarizer 152 have been described as being applied together, but the situation where the position of the dot site user is exposed to the other party is allowed. If the first polarization unit 151 and the second polarization unit 152 is excluded, that is, the distance between the dot target generator 120 and the reflector 130 is designed to be short by applying only the beam splitter 140. It would be possible.

In this case, if the light source of the dot target generating unit 120 emits light having a wavelength of 650 nm, an LED having a wavelength of 650 nm is used. One or more thin film coatings having a 50% reflectance of 50% are formed, and reflecting light of 650 nm ± 10 nm wavelength is reflected on the reflecting surface of the reflector 130 (to reflect almost 50% at 650 nm wavelength). If one or more layers of thin film coatings are hardly reflected with respect to the wavelength of the light ray region, the light of dot dot is reflected on the inclined surface 141 of the beam splitter 140 and is reflected back to the reflector 130 so that the beam splitter 140 When the light penetrates the inclined surface 141 and enters the observer's eye, the transmittance is about 12.5%. In this way, when light from an external target passes through the reflecting mirror and the inclined surface of the beam splitter 140 and enters the observer's eye, it has a transmittance approaching about 50% of the total wavelength of the visible light region. The color of the external field of view secured from the surroundings can be prevented from changing significantly. That is, the reflection coating of the reflecting surface of the reflecting mirror reflects only a part of wavelength bands in the spectrum of the visible wavelength including the light source wavelength of the tote target generator, thereby inclining the inclined surface of the reflecting mirror and the beam splitter 140. It is possible to prevent the color change of the external target transmitted through the external target incident to the observer's eye and its surroundings from being greatly changed. The change in color is obtained from the external target and its surroundings by the experiment of the present inventors when the transmittance for each wavelength has a deviation within 30% of the average value of the transmittance for each wavelength with respect to the wavelength of the visible light region (about 450 to 660 nm). It was confirmed that the color of the external view secured did not change significantly.

Next, a dot site apparatus having a beam splitter according to a second embodiment of the present invention will be described.

4 is a schematic configuration diagram of a dot-site apparatus having a beam splitter according to a second embodiment of the present invention.

In the dot-site apparatus having the beam splitter according to the second embodiment of the present invention as shown in FIG. 4, the reflector 130 'is formed of a singlet or doublet lens, and the reflector 130' and the beam splitter ( It differs from the first embodiment in that the connecting member 160 between the 140 is omitted.

) 2매의 렌즈로 구성되는 더블렛 렌즈로 반사경(130')을 구성하는 경우, 반사경(130')의 두 번째 면(도 4의

)을 반사면으로 구성(이 면이 도트시표로부터의 광선에 대해서는 반사면이 되지만 외부 목표물과 그 주변부로부터 관찰자의 눈으로 입사하는 광선에 대해서는 굴절면이 되는 것은 일반 광학분야에서는 잘 알려진 내용이다)하고, 도 4의

과

의 곡률반경을 조절하여 반사경(130')을 통해 관찰되는 외부 목표물의 상에 배율이 나타나지 않도록 한다. Same refractive index as in the drawing (

) When the reflector 130 'is formed of a doublet lens composed of two lenses, the second side of the reflector 130' (see FIG. 4).

) Is a reflective surface (this surface becomes a reflective surface for light rays from a dot timeline, but it is well known in general optics to be a refractive surface for light incident on the observer's eye from an external target and its surroundings) 4,

and

Adjust the radius of curvature so that the magnification does not appear on the external target observed through the reflector 130 '.

In addition, when the reflector is composed of a singlet lens, the first or second surface of the singlet lens is configured as a reflecting surface, and the curvature radius of the other surface is adjusted so that the reflector is observed on the external target observed through the reflecting mirror. It is also possible for the magnification not to appear.

은 곡률반경이 무한대이고

굴절면은 굴절 전후 공간의 굴절률이 같아서(

) 굴절력을 가질 수 없다. 따라서 굴절력을 가지는 굴절면은

과

인데, 각각의 면굴절력은 식 5에 따라, That is, in FIG. 4, light rays from the external target and its surroundings pass through the reflector 130 ′ and the beam splitter 140 and enter the observer's eye.

Is the radius of curvature is infinite

The refractive surface has the same refractive index in the space before and after refraction (

) Can not have refractive power. Therefore, the refractive surface with refractive power

and

Where each surface refractive power is

,

으로 표현되고,

,

Lt; / RTI >

은 Total composite refractive power

silver

---(식 3)

--- (Equation 3)

는

에서

까지에 대한 렌즈 중심거리이다.). (

The

in

Lens center distance for far.)

Here, in order to have almost no magnification of Equation 1 or 2 (mostly magnification is 1 times), the value of Equation 6 should be close to zero, which is a general content of geometric optical textbooks.

An example of design data of Example 2 designed as described above is as follows.

(m)

(m) -0.115366

(m) -0.116556

이고, 반사경 주변부의 공간이 공기라면

이고, 두 굴절면

,

사이의 중심두께가

이면 식 2에 의한 면 굴절력은 각각The refractive index of the used reflector lens is at a wavelength of 635 nm of the dot viewing ray.

If the space around the reflector is air

Two refractive surfaces

,

Between the center thickness

If the surface refractive power according to equation 2

이므로,

Because of,

는Total synthetic refractive power by Equation 3

The

=

=

Therefore, there is almost no magnification of Equation 1 or 2 above (almost a magnification of 1 times).

) 2매의 렌즈로 구성되는 더블렛 렌즈로 반사경(130')을 구성하는 경우에도, 반사경의 두 번째 면(도 4의

)을 반사면으로 구성하고, 도 4의

과

의 곡률반경을 조절하여 반사경(130')을 통해 관찰되는 외부 목표물의 상에 배율이 나타나지 않도록 할 수 있다. 즉, 도 4에서 보면 외부 목표물과 그 주변으로부터의 광선들이 반사경(130')과 빔 스플리터(140)를 지나 관찰자의 눈으로 입사될 경우 지나는 굴절면 중

은 곡률반경이 무한대이고,

굴절면은 굴절 전후 공간의 굴절률이 다르다. 따라서 굴절력을 가지는 굴절면은

인데, 각각의 면굴절력은 식 5에 따라In addition, in the configuration as shown in FIG.

) Even when the reflector 130 'is composed of a doublet lens composed of two lenses, the second side of the reflector (Fig. 4

) As a reflecting surface,

and

By adjusting the radius of curvature of the magnification can be prevented from appearing on the external target observed through the reflector (130 '). That is, in FIG. 4, among the refracting surfaces that pass when the external target and the light rays from the periphery pass through the reflector 130 ′ and the beam splitter 140 and enter the observer's eye.

Is an infinite radius of curvature,

The refractive surface has a different refractive index in the space before and after refraction. Therefore, the refractive surface with refractive power

Where each surface refractive power is

,

,

,

,

Represented by

은 식 6보다는 더 복잡한Total composite refractive power

Is more complex than

--- (식 7)

--- (Equation 7)

의 함수로 표현된다.Such as

It is expressed as a function of.

Here, too, it is natural that the value of Equation 7 should be close to zero so that there is little magnification of Equation 1 or 2 (mostly magnification is 1x).

However, if the magnification in the range of Equation 3 does not appear stable fatigue, the configuration of the surface refractive power having a magnification in the range of Equation 3 may be acceptable.

On the other hand, since the dot path provided from the dot target generator 120 is reflected toward the viewer, and the first polarizer 151 and the second polarizer 152 are the same as in the first embodiment, Detailed description thereof will be omitted.

When the reflector 130 is configured as a singlet or doublet lens as described above, parallax may be reduced as compared with the first embodiment.

Next, a dot site apparatus having a beam splitter according to a third embodiment of the present invention will be described.

5 is a schematic configuration diagram of a dot-site apparatus having a beam splitter according to a third embodiment of the present invention.

In the dot-site apparatus having the beam splitter according to the third embodiment of the present invention as shown in FIG. 5, the beam splitter 140 ′ is formed of a polarization beam splitting prism (PBS prism). A first quarter wavelength plate 171 (λ / 4 plate: Quarter wave plate) is disposed between the beam splitter 140 'and the reflector 130, and the second quarter is disposed in front of the reflector 130. The wavelength plate 172 is different from the first embodiment in that it is disposed.

Here, the beam splitter 140 ′ formed of the polarization beam splitting prism has a coating that reflects all light rays of the s-polarization component and transmits all light rays of the p-polarization component on the inclined surface 141. The polarization axis of the first polarization unit 151 disposed between the 120 and the beam splitter 140 'is set to convert transmitted light into s-polarized light.

That is, when the dot target ray of the dot target generation unit 120 is incident on the first polarization unit 151, when the ray passing through the first polarization unit 151 becomes the s polarized ray, the s polarized ray Reflected toward the first quarter wave plate 171 on the inclined surface 141 of the beam splitter 140 ', the right turn polarized light (or left turn polarized light) is transmitted through the first quarter wave plate 171. do. Subsequently, when the s-polarized light is reflected by the reflector 130 and passes in the reverse direction, the s-polarized light passes through the first quarter wave plate 171 again and is converted into p-polarized light. Therefore, the p-polarized light incident on the inclined surface 141 of the beam splitter 140 ′ is observed by the viewer through the inclined surface 141.

The operation of the third embodiment of the dot-site apparatus having the above-described beam splitter will now be described.

As shown in FIG. 5, the light of the dot target provided by the dot target generating unit 120 is converted into the s-polarized light while passing through the first polarizing unit 151 and provided toward the beam splitter 140 ′. On the reflective surface of the beam splitter 140 ', most of the dot viewing light rays are reflected toward the reflecting mirror 130 because they consist mostly of s-polarized light.

The light rays of the dot target of the s-polarization component from the inclined surface 141 toward the reflector 130 are converted into right circularly polarized light (or left circularly polarized light) while passing through the first quarter-wave plate 171, so that some light rays are reflected by the reflector 130 The light beam is transmitted toward the target through the target, and some light is reflected by the reflector 130 and converted into left circularly polarized light (or right circularly polarized light) and incident toward the beam splitter 140 '.

Here, the light of the dot target reflected by the reflector 130 is converted into p-polarized light while passing again through the first quarter-wave plate 171 positioned between the connecting member 160 and the beam splitter 140 '. The light is transmitted from the inclined surface 141 of the splitter 140 'without reflecting. Therefore, the observer may aim the image of the dot target, which is a virtual image provided from the dot target generator 120 and reflected by the reflector 130, to coincide with the external target observed through the beam splitter 140 ′.

On the other hand, since the light rays passing through the reflector 130 and provided in the target direction are converted into right circularly polarized light (or left circularly polarized light) while passing through the first quarter wave plate 171, the light rays disposed in front of the reflector 130 are disposed. Second quarter wave plate 172 configured to transmit only a left circularly polarized light (or right circularly polarized light) component in a direction opposite to rotational polarization generated by the first polarized light 151 and the first quarter wave plate 171. And the second polarizer 152 may not pass through. Therefore, even if the optical axis of the reflector 130 is arranged on the same line as the optical axis of the beam splitter 140 ', the light of the dot target provided from the dot target generator 120 passes through the second polarizer 152. Since it is possible to prevent, the light of the dot target is provided to the opponent around the target to prevent the position of the dot site user is exposed.

According to the third embodiment, since there is no amount of light lost in the beam splitter 140 ', it is possible to provide a clearer dot timeline to the viewer. In addition, since the light of the dot sheet passing through the reflecting mirror 130 cannot pass through the second quarter wave plate 172 and the second polarizing portion 152 disposed in front of the reflecting mirror 130, the target side The observer of is unable to see most of the rays emitted from the dot timeline.

6 is a schematic structural diagram of a dot-site apparatus having a beam splitter according to a fourth embodiment of the present invention.

In the dot site apparatus having the beam splitter according to the fourth embodiment of the present invention as shown in FIG. 6, the dot target generator 120 ′ is a silicon liquid crystal display (LCOS), a liquid crystal display (LCD), It differs from the first embodiment in that it is made of an image element that provides an image image, such as an organic electroluminescent display (OLED).

That is, when the dot target generation unit 120 'is formed of an image element, the dot target, information, and the like are displayed by simultaneously displaying the information image required by the observer together with the dot target and reflecting it on the reflector 130. The virtual image of the image can be projected and viewed at the same time. More specifically, it is possible to recognize information on the battlefield and surroundings by a charge coupled device (CCD), a thermal imaging device, etc. together with the dot timetable through the image image.

7 is a schematic structural diagram of a dot-site apparatus having a beam splitter according to a fifth embodiment of the present invention.

First, the dot-site apparatus having the beam splitter according to the fifth embodiment of the present invention as shown in FIG. 7 is disposed on the other side of the inner circumferential surface of the barrel 110 (opposite to the dot target generator), so that the beam splitter 140 A display unit 180 for providing an image image such as a silicon liquid crystal display (LCOS), a liquid crystal display (LCD), an organic electroluminescent display (OLED), and the display unit 180 The image image provided from the display unit 180 between the beam splitter 140 is formed as a virtual image of the image image at a distance farther than the reduced distance according to the optical path from the observer to the display unit 180. It is different from the fourth embodiment in that the image magnification optical system 190 that can enlarge the image by reducing the eye strain is further disposed.

That is, the CCD, IRCCD, thermal image, IR image, or the like may be provided through the display unit 180 in a state where it is difficult to use a dot target such as an environment in which the front field of view is dark. In addition, the image image provided by the display unit 180 may be observed in an enlarged state at a distance greater than a reduced distance according to the optical path from the viewer to the display unit 180 through the image magnifying optical system 190. This reduces the eye strain of the observer's eyes.

In addition, when the image magnification optical system 190 is configured to be detachable, it may be selectively installed or separated as necessary. That is, in a state in which the display unit 180 is installed on the other side of the inner circumferential surface of the barrel, as shown in FIG. It can be arrange | positioned detachably at the edge part.

In addition, although not shown in the drawing, the image amplification optical system 190 including a plurality of lens groups is divided and configured according to a use environment, and the image amplification optical system 190 is divided into the display unit 180 and the beam splitter 140. ) And at the end of the barrel 110 facing the viewer.

Meanwhile, in the above-described third to fifth embodiments, the connection member and the reflector of the first embodiment have been described, for example. However, the connection member may be omitted or the reflector may be singlet or doublet as in the second embodiment. It would also be possible to construct a lens.

The scope of the present invention is not limited to the above-described embodiments, but may be embodied in various forms of embodiments within the scope of the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

110: barrel, 120,120 ': dot time generating unit, 130,130': reflector,
140, 140 ': beam splitter, 141: inclined plane, 151: first polarizer,
152: second polarization portion, 160: connecting member, 171: first 1/4 wavelength plate,
172: second 1/4 wavelength plate, 180: display unit, 190: image magnification optical system

Claims (14)

A reflector disposed in the inner front of the barrel;
A beam splitter disposed on a rear side of the reflector in an inner side of the barrel having an inclined surface that reflects or transmits light;
And a dot target generator disposed at one side of the inner circumferential surface of the barrel to provide a dot target beam toward the inclined surface of the beam splitter.
The inclined surface of the beam splitter reflects a dot-like marking light beam provided from the dot-sight mark generating unit toward the reflecting mirror, transmits a dot-shaped marking light beam that is reflected back from the reflecting mirror toward the beam splitter toward the observer, And at least one layer of thin film coating that allows an outer target and a light beam from its periphery to be transmitted towards the observer. The method of claim 1,
And the optical axis of the reflector is parallel to the optical axis reflected or transmitted by the beam splitter. 3. The method of claim 2,
And the beam splitter comprises a beam splitting plate or a beam splitting prism. The method of claim 3,
The reflector is formed of a concave flat lens having a single reflecting surface, and a connecting member made of the same material as the reflector is interposed between the reflector and the beam splitter, thereby configuring the reflector and the beam splitter as one module. A dot site apparatus having a beam splitter. The method of claim 1,
And said reflector comprises a singlet or doublet lens having a single reflecting surface. The method of claim 1,
And the dot sight generator comprises a video element for providing a video image. The method of claim 1,
And a display unit disposed at the other side of the inner circumferential surface of the barrel to provide an image image toward the inclined surface of the beam splitter. 8. The method of claim 7,
Between at least one of the display unit and the beam splitter, and between the beam splitter and the viewer's viewpoint, the image image provided from the display unit is farther away than the reduced distance along the optical path from the observer to the display unit. And an image magnification optical system configured to form an image as a virtual image of the image image. The method of claim 1,
The radius of curvature of the refracting surfaces through which the beam of light on the optical path from the target to the observer's eye passes is seen in the size and naked eye of the observer's retina by light from an external target passing through the reflector and the beam splitter towards the viewer. A dot-site apparatus having a beam splitter, characterized in that the ratio of the size in the retina is set to fall in the range of 1 ± 0.015. The method of claim 1,
Coating of the inclined surface of the beam splitter,
The light beam from the dot target provided from the dot target generator is reflected toward the reflector and then reflected back from the reflector toward the beam splitter, proceeding toward the observer so that an image of the dot target can be imaged on the retina of the observer's eye. ,
Light rays from an external target pass through the inclined plane of the reflector and the beam splitter in order to form an image on the external target in the retina of the observer's eye,
When the observer overlaps the image of the external target with the image of the dot target, the transmittance of each wavelength is composed of one or more thin films such that the transmittance of each wavelength has a deviation within 30% of the average value of the transmittance of each wavelength with respect to the wavelength of the visible light region. A dot site apparatus having a beam splitter, characterized in that. 11. The method according to any one of claims 1 to 10,
And a second polarizer disposed in front of the dot sight generator and the beam splitter, and a second polarizer disposed in front of the reflector. 12. The method of claim 11,
Wherein the first polarizing part and the second polarizing part are formed of linear polarizers whose polarization directions are orthogonal to each other so that the light rays of the dot target generating part passing through the first polarizing part are blocked by the second polarizing part. A dot site apparatus having a splitter. 12. The method of claim 11,
The beam splitter transmits the first polarized part and the light incident on the inclined plane is reflected toward the reflector, and the light beam reflected from the reflector and incident on the inclined plane (the light directed toward the observer) is transmitted. Polarization beam splitting prism) dot site apparatus having a beam splitter, characterized in that consisting of. 12. The method of claim 11,
And a first quarter-wave plate is disposed between the beam splitter and the reflector, and a second quarter-wave plate is disposed in front of the reflector.

Images