KR101604556B1 - Dot-sighting device with beam splitter - Google Patents

Abstract

The present invention relates to a dot site apparatus having a beam splitter, wherein a dot site apparatus having a beam splitter according to the present invention comprises: a reflector disposed on the inner front side of a barrel; and an inclined surface for reflecting or transmitting the light beam, A beam splitter disposed at a rear side of the reflecting mirror at a side of the inner circumferential surface of the barrel to provide a dot beam at a slope of the beam splitter, , The dot-dotted line provided from the dot-dot-mark generator is reflected toward the reflector, and the dot-dotted line reflected from the reflector toward the beam-splitter is transmitted toward the observer, and at the same time, The light rays from the light source can be transmitted through the thin film coating of one or more layers It characterized by that.

Description

[0001] DOT-SIGHTING DEVICE WITH BEAM SPLITTER [0002]

The present invention relates to a dot site apparatus having a beam splitter, and more particularly, to a dot spot apparatus having a beam spot generator and a reflector arranged in two neighboring surface directions opposite to an inclined surface of a beam splitter, To a dot site apparatus having a beam splitter capable of minimizing a parallax by making it parallel to an optical axis of transmission.

The characteristics of rifles or heavy machine guns depend on whether they are capable of swiftly aiming and aiming at the target accurately. In general, the aiming of a rifle or heavy machine gun is achieved by the alignment of the scale and the line of sight of the clamp. The aim by the sight line alignment of the scale located at the upper end of the gun body and the catch located at the end of the shooting range enables the accurate shooting according to the skill of the user using the gun.

However, it is difficult to align the sight line even with a small vibration or trembling in order to aim with only the scale and the mark, and it is difficult to aim at a short distance or in an urgent situation.

That is, in such a boresight shooting method, a complicated process and time are required, such as target acquisition and confirmation, sight line alignment, and aiming, and the scale and the scale itself are so small that they are sensitive to small tremors, When I care about alignment, there is a problem that eyesight is concentrated on the scale and the scale itself rather than the target or the forward situation, and the field of view necessary for the shooting or emergency situation is narrowed.

Therefore, in order to cope with the difficulty of aligning the sight line and to improve the accuracy of the sighting, a sighting device equipped with a telephoto lens has been proposed. However, in the case of an optical syringe equipped with a telephoto lens, when the magnification of the telephoto lens is increased, it is sensitive to the small vibration.

In order to solve these problems, a dot site apparatus has been proposed in which a zoom magnification or a low magnification lens is used for an optical sights and complex sight lines are eliminated and simple aim points are used.

An optical zoomless (or low magnification) dot-sight aiming system is simple and fast to aim at and is very useful in an emergency or near field. Specifically, it is possible to reduce the time required for aligning the conventional collimation line, and the collimation itself is sufficient for positioning the virtual image of the dot target on the target, so that it is possible to secure a field of view. In the end, it is possible to aim quickly and accurately, and it is also possible to secure a peripheral view necessary for the circumstance judgment.

However, in the case of the conventional dot sighting device, since the optical axis of the reflecting mirror of the sight mirror is inclined with respect to the optical axis of the mirror barrel, parallax is larger than that of the optical mirror whose reflecting mirror optical axis coincides with the optical axis of the mirror barrel, There is a drawback in that the dot site must be formed by further increasing the distance between the dot on the dot and the reflector or decreasing the diameter of the effective reflector.

However, in the case of the conventional dot sighting device, as shown in FIG. 1, the dot-mark generating unit 5 is positioned at a position that does not interfere with the progress of most of the light beams reflected by the reflector, So that the dot sighted by the dot sight can not be seen by the other party. However, in order to do so, the optical axis of the reflecting mirror is a principal ray (generally a ray at the center of the reflected rays, which is a representative ray of reflected rays of a reflecting mirror forming a dot (A1 in Fig. 2 (a), A1 is generally 1/2 of the angle A2 formed by the path that the principal ray emitted from the dot-sight table generating portion is reflected by the reflector and travels to the dot-site optical axis) The angle of inclination).

As a result, as shown in Figs. 2A and 2B, the arrangement of the reflecting mirrors not tilted with respect to the dot-site optical axis due to the arrangement of the reflecting mirrors tilted with respect to the dot-sight optical axis (Fig. 2 (a) The finite ray aberration greater than that of FIG. 2 (b) affects the parallax of the dot to be observed by the observer, and the size (diameter) of the reflector and the distance (Fig. 2 (a)) inclined with respect to the dot-sight optical axis is greater than that of the reflector (Fig. 2 (b)) which is not tilted with respect to the dot-sight optical axis.

Excessive occurrence of this parallax is caused by the fact that the visual axis of the observer with respect to the shooting target in the reflector is positioned at the periphery beyond the dot site optical axis with respect to the initial alignment state of the shot axis and the shot target shot point There is a problem that causes an increasingly large error. Therefore, the excessive occurrence of time lag naturally reduces the accuracy of the target when using the dot site.

In addition, since the parallax is increased as the distance between the dot-mark generating unit and the reflector is shortened, the parallax is much smaller than that of FIG. 2 (a) The distance between the dotted-eye mark generating unit 5 and the reflector 7 can be made shorter than that shown in FIG. 2 (a) in the case of FIG. 2 (b) The size of the dot site device can be reduced.

However, in spite of the above advantages, the arrangement structure as shown in FIG. 2 (b) is disadvantageous in that it obstructs the observation of the external target point since the dot sign generator 5 is positioned at the center of the dot- There is a problem that the sight of the dot site user is disturbed due to the problem that the sighting occurs and the light emitted from the dot sign generating unit 5 is observed by the other party at the external target point or its surroundings.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to solve the problems of the prior art described above by arranging a beam splitter between the dot visual mark generator and the reflector so that the optical axis of the reflector is parallel to the optical axis reflected or transmitted by the beam splitter, And a beam splitter that can minimize the size of the beam spot.

The beam splitter can prevent the observer from being seen by observing the light rays of the dot grid on the target side by blocking the light beam of the dot slip generator passing through the first polarizer section at the second polarization section provided in front of the reflecting mirror. And a dot sighting device.

According to an aspect of the present invention, there is provided a light source device comprising: a reflector disposed on an inner front side of a barrel; a beam splitter provided on an inner side of the barrel with an inclined surface reflecting or transmitting light, And a slit surface of the beam splitter, the slit surface of the beam splitter being disposed on the slit surface of the beam splitter so as to face the slit surface of the beam splitter, One or more thin film coatings are provided that allow the dots to be reflected back toward the beam splitter from the reflector to be transmitted to the observer while allowing the external target transmitted through the reflector and the light from the periphery to be transmitted towards the observer And a beam splitter having a beam splitter.

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

It is preferable that the beam splitter comprises a beam separation flat plate or a beam separation prism.

It is preferable that the reflecting mirror is made of a concave lens having a single reflecting surface and a connecting member made of the same material as the reflecting mirror is interposed between the reflecting mirror and the beam splitter so that the reflecting mirror and the beam splitter are constituted by one module .

Further, it is preferable that the reflector is composed of a single or double lens having a single reflection surface.

In addition, the dot sign generator preferably comprises an image element for providing a video image.

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

In addition, at least one of the space between the display unit and the beam splitter, or between the beam splitter and the viewpoint of the observer, is such that the image image provided from the display unit is longer than the reduced distance along the optical path from the observer to the display unit And an image magnifying optical system for imaging a virtual image of the image at a distance.

In addition, the radius of curvature of the refracting surfaces through which light rays on the optical path from the target to the observer's eye passes is measured by the size of the observer's retina due to the light rays from the external target passing through the reflector and the beam splitter, It is preferable to set the ratio of the size in the retina to the range of 1 0.015.

In addition, the coating of the slope of the beam splitter is performed by reflecting a light beam from a dot-shaped table provided from the dot-sight-table generating unit toward the reflecting mirror and then from the reflecting mirror toward the beam splitter to advance it toward the observer, So that a light beam from an external target passes through an inclined surface of the reflector and the beam splitter in order to form an image on an external target on the retina of an observer's eye, It is preferable that the thin film is formed of one or more thin films such that the transmittance of each wavelength with respect to the wavelength of the visible light region has a deviation of 30% or less from the average value of the transmittance of each wavelength when the observer overlaps the dotted table.

In addition, it is preferable to further include: a first polarizing portion disposed between the dot visual mark generating portion and the beam splitter; and a second polarizing portion disposed in front of the reflecting mirror.

The first polarizer and the second polarizer are preferably linear polarizers whose polarizing directions are orthogonal to each other such that the light rays of the dot visual-table generating unit passing through the first polarizer are blocked by the second polarizer .

The beam splitter has a polarizing beam splitting prism (PBS) that transmits the light beam that is incident on the oblique plane through the first polarizer, is reflected toward the reflecting mirror, and is reflected by the reflecting mirror to be incident on the oblique plane. prism: 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.

According to the present invention, a dot site apparatus having a beam splitter capable of minimizing the parallax by disposing a beam splitter between the dot occasion table generating unit and the reflector and making the optical axis of the reflector parallel to the optical axis reflected or transmitted by the beam splitter / RTI >

The beam splitter can prevent the observer from being seen by observing the light rays of the dot grid on the target side by blocking the light beam of the dot slip generator passing through the first polarizer section at the second polarization section provided in front of the reflecting mirror. Is provided.

FIG. 1 is a cross-sectional view schematically showing a conventional monocular dot sight sighting device,
FIG. 2 is a conceptual diagram showing the degree of parallax according to the position of the dotted-
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 configuration 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 block 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 block diagram of a dot site apparatus having a beam splitter according to a first embodiment of the present invention.

A dot site apparatus having a beam splitter according to the first embodiment of the present invention as shown in the drawings is provided with a lens barrel 110 disposed on the upper side of a gun barrel and aligned with a row of gun barrels, A dot reflector 130 disposed on the inner side of the barrel 110 and disposed in front of the dot reflector 120 on the inner side of the barrel 110; And the reflector 130 and reflects the light of the dot pattern provided from the dot pattern generator 120 in the direction of the reflector 130 and directs the light from the reflector 130 toward the beam splitter 140 A beam splitter 140 having an inclined surface 141 through which a light beam of a reflected and incident dot pattern is transmitted, and a beam splitter 140 disposed between the beam spot generating unit 120 and the beam splitter 140. [ (151), a second polarizing portion (1) disposed in front of the reflecting mirror (130) 52).

The dotted-eye mark generating unit 120 includes a light emitting device such as an LED and a mask having a translucent portion in the shape of a dot in front of the light emitting device. Meanwhile, the dot sign generator 120 may include an image element such as an OLED, an LCD, and an LCOS to display a desired dot shape.

The reflector 130 is composed of a concave lens having a negative refracting power and having a single reflective surface reflecting the dot pattern of the dot creator 120. At this time, the reflector 130 may be connected to the beam splitter 140 by a connecting member 160 and may be provided in the form of a module with the beam splitter 140. The connecting member 160 is made of the same material as the reflecting mirror 130 so that magnification or distortion is generated on the external target and its surroundings visible through the beam splitter 140, the connecting member 160 and the reflecting mirror 130 .

The beam splitter 140 may be composed of a beam-separating prism including two right-angle prisms. That is, when one of the two inclined surfaces 141, which are the interfaces of the two right prisms, is coated with, for example, 50% reflection coating, the beam splitter 140 transmits 50% and reflects 50%. When the dot visual-mark generating unit 120 and the reflector 130 are disposed on the lower side facing the slope 141 of the beam splitter 140 as described above, the optical axis of the reflector 130 is aligned with the beam splitter 140 and may be positioned in the same line as the optical axis of the dot pattern toward the reflector 130. [ Also, although not shown in the drawings, the beam splitter 140 may be formed as a beam-splitting flat plate that is disposed in an inclined manner. In the case of a beam-splitting flat plate, transmission and reflection coating can be performed on at least one surface of a flat plate-like optical glass which is arranged obliquely according to the transmission amount of the necessary beam. That is, when the A% reflective coating is applied, the beam splitter 140 transmits (100-A)% of the incident light provided to the beam splitter 140 and reflects A%.

The coating of the sloped surface 141 of the beam splitter 140 is performed by reflecting the light of the dotted table provided from the dotted mark generating unit 120 toward the reflector and then from the reflector 130 toward the beam splitter 140 The light rays of the reflected dots are transmitted through to the observer so that they can be imaged onto the retina of the observer's eye on the dotted table. In addition, a light beam provided from an external target passes through the inclined surfaces of the reflector and the beam splitter in order to form an image on an external target on the retina of the observer's eye. That is, when the observer overlaps the image of the outer target and the image of the dot at the time of the overlapping of the oblique surface 141, the transmittance of each wavelength for each wavelength (about 450 to 660 nm) It is preferable that it is made of a thin film or more of a layer so as to have a deviation within 30% of the average value so that the color of the external target secured from the external target and the periphery thereof does not significantly change.

)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 size of the image on the retina of the observer by the light beam from the external target, which is transmitted through the reflecting mirror and the beam splitter and directed to the observer,

) And the size of the retina in the eye (

: The ratio of the size of the image on the retina of the observer by the light beam from the same external target facing the observer in the absence of the reflector and the beam splitter)

) In other words

---(식 1)

--- (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 preferable that the radius of curvature of the refracting surfaces through which light rays on the light path from the target to the observer's eye are transmitted is determined so that there is little (or almost) the magnification. However,

(In this embodiment, the optical system including the reflector and the beam splitter) having the focal length (the inverse of the focal length in meters) exists, the size of the external object passing through the optical system

) Does not pass through this optical system,

), And the ratio thereof

) In the spectacle optics,

And the equation representing this can be approximated as shown in Equation 2 below.

--- (식 2)

--- (Equation 2)

(

), 관찰자의 눈에서 광학계의 물측 주평면까지의 거리(m)를

이라 한다.)(Here, the focal length (m) of the optical system is

(

), The distance (m) from the eye of the observer to the principal plane of the optical system

)

은 식 1의

와 동일시 된다. Therefore,

The equation

.

If the size of the retinal image for the same external aiming target secures the field of view through the dot site and secures the field of view without going through the dot site, if there is a difference, the situation of securing the field of view without passing through the dot site Alternately, in an urgent matter that must be quickly replaced with the movement of an external aiming target, it causes stability fatigue in observing an external object.

Therefore, in this embodiment, the magnification value of the dot site according to the above-described Equation 2 is limited, so that the movement of the target is rapidly observed while alternating the situation through the dot site or not, To prevent the stability fatigue.

That is, the range of the self magnification value is limited to 0.985 to 1.015, and the change in size of the retinal image of the external object before and after use of the dot site is limited to within 1.5%, thereby minimizing the occurrence of the stable fatigue, Protect your eyes.

This is based on the theory commonly used in optics that optic binocularity is possible up to 1.5% of the difference in the size of the retina of the two eyes and diplopia becomes difficult when the binocularity is more than 5%. In other words, when using a dot site, one eye may see through the reflector of the dot site, and the other eye may observe the object at the far distance without going through the dot site, depending on the change of the environment of the external target. The allowable difference in size of the retina of the two eyes, which does not cause anisiconia, is about 1.5%.

When this is applied to the dot site of the present embodiment, it is summarized as the following Equation 3.

--- (식 3)

--- (Equation 3)

가 된다. That is, the factors affecting the magnification are the combined refractive power of the entire optical system in which the surface powers of the respective refracting surfaces,

.

--- (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

The radius of curvature of the first refracting surface (unit: m),

The

The refractive index of the space after the refracting surface refraction,

The

Lt; th > refractive surface)

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 refracting surface is planar

The surface power of Equation 5 becomes zero, and the total optical power of the optical system of Equation 4

Becomes zero. Then, in Equation 2,

So that the size of the retina of the observer is substantially equal to the size of the observer's retina due to the light beam from the external target passing through the reflector and the beam splitter and directed to the observer.

)에서 영(zero)이 되어 식 2의 배율이 발생되지 않는다. 3, all the refracting surfaces that pass when the rays from the external target and its surroundings pass through the reflecting mirror 130 and the beam splitter 140 and enter the observer's eye have infinite radius of curvature or a refractive index of the front and rear spaces of the refracting surface It is impossible to have a refracting power and the magnification does not occur. That is, in Equation (5), the surface power of all the refracting surfaces

The magnification of Equation 2 is not generated.

The first polarizing part 151 is disposed between the dot visual mark generating part 120 and the beam splitter 140 and the second polarizing part 152 is disposed in front of the reflecting mirror 130, The first polarizer 151 and the second polarizer 152 are linear polarizers whose polarization directions are orthogonal to each other. In other words, the dot-shaped mark passing through the first polarized portion 151 is blocked by the second polarized portion 152 in front of the reflecting mirror 130 so that the dotted mark is not observed on the target side.

Hereinafter, the operation of the first embodiment of the dot site apparatus having the above-described beam splitter will be described.

As shown in FIG. 3, the dotted-line marking light provided by the dotted-eye mark generating unit 120 is converted into linearly polarized light while passing through the first polarizing unit 151 disposed in front of the dotted-mark generating unit 120, And is reflected by the inclined surface 141 of the splitter 140 and travels toward the reflecting mirror 130. [

The dot beam that is reflected back by the reflector 130 and travels in the reverse direction is transmitted according to the transmittance of the slope 141 of the beam splitter 140 and is incident on the eye of the observer to provide the observer with a virtual image of the dot beam .

In this case, the light beam of the dot sight transmitted through the reflector 130 and directed to the target may be observed by the other party around the target. However, in the front of the reflector 130, the second polarizer 151, The light beam of the dotted-line table in which the polarized light portion 152 is disposed and passed through the first polarized light portion 151 is blocked by the second polarized light portion 152, so that the position of the dot site user is not exposed to the other party.

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 The parallax of the rays passing through the beam splitter 140 can be minimized. Therefore, not only excellent performance can be ensured even if the reflector 130 having a single reflective surface is applied, but also the distance between the dotted-eye mark generating unit 120 and the reflector 130 can be shortened, And weight reduction can be achieved.

Meanwhile, in the present embodiment, the beam splitter 140, the first polarization unit 151 and the second polarization unit 152 are applied together. However, the situation where the dot site user is exposed to the other party is allowed The distance between the dot visual mark generating unit 120 and the reflector 130 is shortened by applying only the beam splitter 140 in a state in which the first polarizing unit 151 and the second polarizing unit 152 are excluded It is also possible to do.

Here, if an LED that emits light having a wavelength of 650 nm is used as a light source of the dot-sign generator 120, and transmittance of a wavelength (about 450 to 660 nm) in a visible light region on the slope of the beam splitter 140 And a 50% reflectance of 50% is formed on the reflecting surface of the reflecting mirror 130. The reflecting surface of the reflecting mirror 130 is made to reflect light having a wavelength of 650 nm ± 10 nm (to reflect almost 50% at a wavelength of 650 nm) The light rays of the dotted table are reflected by the inclined surface 141 of the beam splitter 140 and reflected back to the reflector 130 so that the light beam of the beam splitter 140 The transmittance is about 12.5% when the light is incident on the observer's eye through the sloped surface 141. Thus, when a light beam from an external target is incident on the observer's eye through the reflector and the slope of the beam splitter 140, the light has a transmittance approaching about 50% of the entire wavelength of the visible light region, It is possible to prevent the color of the external field of view secured from the periphery from changing greatly. That is, the reflective coating of the reflective surface of the reflector reflects only a part of the wavelength band in the spectrum of the visible region wavelength including the light source wavelength of the to-be-measured table generating portion so that the inclined surface of the reflector and the beam splitter 140 It is possible to prevent the color of the external target, which is incident from the eye of the observer, and the external visual field secured from the periphery, from changing greatly. When the transmittance of each wavelength has a deviation of less than 30% of the average value of the transmittance of 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 secured external view does 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 block diagram of a dot site apparatus having a beam splitter according to a second embodiment of the present invention.

The dot site apparatus having the beam splitter according to the second embodiment of the present invention as shown in FIG. 4 includes a reflector 130 'made of a single-walled or double-walled lens, a reflector 130' and a beam splitter 140 in that the connecting member 160 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. As shown in the drawing,

When the reflector 130 'is constituted by a double-lens lens composed of two lenses, the second surface of the reflector 130'

) (This surface is a reflection surface for a ray from a dot-in-grid table but a refraction surface for an external target and a light incident on an observer's eye from the periphery thereof is well known in the general optical field) 4,

and

So that the magnification does not appear on the external target observed through the reflector 130 '.

Further, in the case of constructing a reflector with a single-lens lens, the first or second surface of the single-lens lens is configured as a reflective surface, and the curvature radius of the other surface is adjusted, It is also possible to prevent the magnification from appearing.

은 곡률반경이 무한대이고

굴절면은 굴절 전후 공간의 굴절률이 같아서(

) 굴절력을 가질 수 없다. 따라서 굴절력을 가지는 굴절면은

과

인데, 각각의 면굴절력은 식 5에 따라, In other words, as shown in FIG. 4, when the external target and the rays from the periphery thereof pass through the reflector 130 'and the beam splitter 140 and enter into the eye of the observer,

The radius of curvature is infinite

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

) Can not have refracting power. Therefore, the refracting surface having the refracting power

and

, The respective surface refractive powers, according to Equation 5,

,

으로 표현되고,

,

Lt; / RTI >

은 Total composite refractive power

silver

---(식 3)

--- (Equation 3)

는

에서

까지에 대한 렌즈 중심거리이다.)
. (

The

in

Is the lens center distance to.

Here, the value of Equation 6 should be close to zero so that there is almost no magnification of Equation 1 or Equation 2 (so that the magnification is almost one time) is the general content of the geometric optical textbook.

An example of the design data of the second embodiment 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 was measured at a wavelength of 635 nm

And the space in the periphery of the reflector is air

, And the two refracting surfaces

,

The center thickness between

The surface refractive power according to Equation 2 is

이므로,

Because of,

는Total composite refractive power according to Equation 3

The

=

=

So that the magnification of Equation 1 or Equation 2 is almost zero (almost magnification is one-fold).

) 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 따라Further, in the configuration as shown in FIG. 4,

) Even in the case of constructing the reflector 130 'with a double-lens lens composed of two lenses, the second surface of the reflector

) Is composed of a reflective surface, and FIG. 4

and

The magnification can be prevented from appearing on the external target observed through the reflector 130 '. In other words, as shown in FIG. 4, when the external target and the rays from the periphery thereof pass through the reflector 130 'and the beam splitter 140 and enter into the eye of the observer,

The radius of curvature is infinite,

The refracting surface has a different refractive index before and after the refraction. Therefore, the refracting surface having the refracting power

, And each surface power is calculated according to Equation 5

,

,

,

,

Lt; / RTI >

은 식 6보다는 더 복잡한Total composite refractive power

Is more complex than Eq. 6

--- (식 7)

--- (Equation 7)

의 함수로 표현된다.Such as

.

Here, it is a matter of course that the value of Equation 7 should be close to zero so that there is little or no magnification of the formula 1 or 2 (i.e., the magnification is almost one time).

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

Since the first and second polarized light portions 151 and 152 are the same as those in the first embodiment, the dotted line provided by the dotted-eye table generating portion 120 is reflected toward the observer, A detailed description thereof will be omitted.

When the reflector 130 is composed of a single-let or double-lens as described above, the parallax can 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.

5, in the dot site apparatus having the beam splitter according to the third embodiment of the present invention, the beam splitter 140 'comprises a polarizing beam splitting prism (PBS prism) A quarter wave plate 171 is disposed between the beam splitter 140 and the reflector 130 and a quarter wave plate 171 is disposed in front of the reflector 130. Differs from the first embodiment in that the wave plate 172 is disposed.

Here, the beam splitter 140 'formed of the polarizing beam splitter prism has a coating that reflects all of s-polarized light components on the slope 141 and transmits all of p-polarized light components, The first polarization section 151 disposed between the beam splitter 120 and the beam splitter 140 'has a polarization axis set to convert transmitted light into s-polarized light.

That is, when a dotted line of the dotted mark generating unit 120 is incident on the first polarized light unit 151, when the light ray passing through the first polarized light unit 151 is an s-polarized light ray, Is reflected from the slope 141 of the beam splitter 140 'toward the first quarter-wave plate 171 and passes through the first quarter-wave plate 171 so that right-turn polarized light (or left-turn polarized light) do. When the s-polarized light beam is reflected by the reflector 130 and travels in the reverse direction, the light passes through the first quarter-wave plate 171 again and is converted into a p-polarized light beam. Therefore, the p-polarized light beam incident on the sloped surface 141 of the beam splitter 140 'passes through the sloped surface 141 and is observed by the observer.

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

As shown in FIG. 5, the light rays of the dotted-eye table provided in the dotted-eye table generating unit 120 are converted into s-polarized light beams while passing through the first polarized light unit 151 and provided toward the beam splitter 140 ' , Most of the reflected light is reflected toward the reflector 130 because most of the dotted light is composed of s-polarized light rays on the reflection surface of the beam splitter 140 '.

The light beam of the s-polarized component dotted from the slope 141 toward the reflector 130 is converted into right circularly polarized light (or left circularly polarized light) through the first quarter wave plate 171, And a part of the light is reflected by the reflecting mirror 130 and converted into a left circularly polarized light (or a right circularly polarized light), and is incident on the beam splitter 140 '.

The beam of the dot pattern reflected by the reflecting mirror 130 passes through the first quarter wave plate 171 located between the connecting member 160 and the beam splitter 140 ' And is transmitted without being reflected by the inclined surface 141 of the splitter 140 '. Accordingly, the observer can aim the image of the dot-shaped table provided from the dot-sight-table generating unit 120, which is a virtual image reflected by the reflector 130, through the beam splitter 140 'in conformity with the external target observed.

Since the light beams transmitted 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, they are arranged in front of the reflecting mirror 130 Wave plate 172 configured to transmit only the left-handed circularly polarized light (or right-handed circularly polarized light) component, which is opposite to the rotationally polarized light produced by the first polarized light unit 151 and the first 1/4 wave plate 171, And the second polarized light 152 can 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 rays of the dotted-line table provided from the dotted-eye mark generating unit 120 transmit through the second polarized light unit 152 It is possible to prevent the ray of the dot at the time of the dot from being provided to the other party in the vicinity of the target, thereby exposing the position of the dot site user.

According to the third embodiment, since there is no amount of light to be lost in the beam splitter 140 ', it is possible to provide the observer with a clearer dot pattern. In addition, since the ray of the dot pattern transmitted through the reflector 130 can not pass through the second 1/4 wave plate 172 and the second polarization unit 152 disposed in front of the reflector 130, Observer will not be able to see most of the rays emitted from the dots grid.

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

6, the dot sighting device 120 'having the beam splitter according to the fourth embodiment of the present invention includes a silicon liquid crystal display (LCOS), a liquid crystal display (LCD) Which is different from the first embodiment in that it is composed of an image element which provides an image image such as an organic electroluminescence display (OLED).

That is, when the dot-eye-mark generating unit 120 'is constituted by an image device, the dot-eye table and the information image required by the observer are simultaneously displayed and reflected on the reflector 130, The virtual image of the image can be simultaneously projected and viewed. More specifically, it is possible to recognize the surrounding situation by information transfer on the whole field, a charge coupled device (CCD), a thermal imaging device and the like together with the dot sign by using a video image.

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

7, a dot site apparatus having a beam splitter according to a fifth embodiment of the present invention is disposed on the other side of the inner circumferential surface of the lens barrel 110 (on the opposite side of the dot defocus generating unit) A display unit 180 for providing an image image such as a silicon liquid crystal display (LCOS), a liquid crystal display (LCD), and an organic electroluminescent display (OLED) toward the slope 141 of the display unit 180; The image image provided from the display unit 180 between the beam splitter 140 is imaged to the virtual image of the image image at a distance longer than the reduced distance along the optical path from the observer to the display unit 180 And differs from the fourth embodiment in that an image magnifying optical system 190 for enlarging the image by reducing the stable fatigue of the eye is further disposed.

That is, it is possible to provide a CCD, an IRCCD, a thermal image, an IR image, and the like through the display unit 180 in a state where it is difficult to use a dot sign table as in the case where the forward view is dark. The video image provided by the display unit 180 is observed through the image magnifying optical system 190 in an enlarged state at a distance longer than a reduced distance along the optical path from the observer to the display unit 180 The stability fatigue of the observer's eye is reduced.

In addition, when the image magnifying optical system 190 is detachably configured, it can be selectively installed or separated if necessary. 8, the image magnifying optical system 190 is disposed between the beam splitter 140 and the observer's viewpoint, that is, the observer's viewpoint, that is, the observer's viewpoint 110 In the present invention.

Although not shown in the drawing, the image magnifying optical system 190 including a plurality of lens groups may be divided according to the use environment, and the divided image magnifying optical system 190 may be divided into a display unit 180 and a beam splitter 140 , And at the end of the barrel 110 facing the observer, respectively.

In the third to fifth embodiments described above, the connection member and the reflector according to the first embodiment are described. However, the connection member may be omitted or the reflector may be connected to the single- It is also possible to constitute 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-dot pattern generator, 130,130': reflector,
140,140 ': beam splitter, 141: slope, 151: first polarizer,
152: second polarizing section, 160: connecting member, 171: first 1/4 wavelength plate,
172: second quarter wave plate, 180: display unit, 190: image magnification optical system

Claims (14)

A reflector disposed on the inner front side of the barrel;
A beam splitter formed at an inner side of the barrel and behind the reflecting mirror, the beam splitter having an inclined surface for reflecting or transmitting a light beam;
A dot-sight-table generating unit disposed at one side of the inner circumferential surface of the barrel to provide a dotted beam of light toward an inclined surface of the beam splitter;
A first polarizing unit disposed between the dotted-signal generating unit and the beam splitter; And
And a second polarization unit disposed in front of the reflector,
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, A thin film coating of one or more layers that allows one outer target and the light rays from its periphery to be transmitted towards the observer,
Wherein the polarizing direction of the second polarizing portion is set such that a light beam incident from an external target and its periphery passes through the observer and blocks light rays passing through the first polarizing portion and emitted toward the target. . The method according to claim 1,
Wherein the optical axis of the reflector is parallel to an optical axis that is reflected or transmitted by the beam splitter. 3. The method of claim 2,
Wherein the beam splitter comprises a beam splitting plate or a beam splitting prism. The method of claim 3,
Wherein the reflecting mirror is made of a concave lens having a single reflecting surface and a connecting member made of the same material as the reflecting mirror is interposed between the reflecting mirror and the beam splitter to constitute a reflecting mirror and a beam splitter as one module Wherein the beam splitter has a beam splitter. The method according to claim 1,
Wherein the reflector comprises a single-walled or double-walled lens having a single reflecting surface. The method according to claim 1,
Wherein the dot-sight-table generating unit comprises a video element for providing a video image. The method according to claim 1,
And a display unit disposed on the other side of the inner circumferential surface of the barrel to provide a video image toward an inclined surface of the beam splitter. 8. The method of claim 7,
At least one of the space between the display unit and the beam splitter and the viewpoint of the observer may be set such that the image image provided from the display unit is distant from the reduced distance along the optical path from the observer to the display unit And an image enlarging optical system for forming an image of a virtual image in a virtual image. The method according to claim 1,
The radius of curvature of the refracting surfaces through which light rays on the optical path from the target to the observer's eye are transmitted is determined by the size of the observer's retina due to the light rays from the external target passing through the reflecting mirror and the beam splitter and directed to the observer, And the ratio of size in the retina is in the range of 1 占 .015. The method according to claim 1,
The coating of the sloped surface of the beam-
The light beam from the dot timing table provided from the dot timing table generator is reflected toward the reflector and then reflected back toward the beam splitter from the reflector so as to be directed toward the observer so that the image can be formed on the retina of the observer's eye ,
A light beam from an external target sequentially passes through the inclined surfaces of the reflector and the beam splitter so as to form an image on an external target on the retina of the observer's eye,
Wherein 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 when the observer overlaps the image of the external target and the dotted table. And a beam splitter for splitting the beam splitter. delete The method according to claim 1,
Wherein the first polarizing portion and the second polarizing portion are made of linear polarizers whose polarization directions are orthogonal to each other so that the light rays of the dot visual mark generating portion passing through the first polarizing portion are blocked by the second polarizing portion. A dot site apparatus having a splitter. The method according to claim 1,
The beam splitter has a polarizing beam splitting prism (PBS prism) for transmitting a light beam that is transmitted through the first polarizing portion and is incident on the oblique face toward the reflecting mirror and is reflected by the reflecting mirror to be incident on the oblique face, Polarizing beam splitting prism). ≪ RTI ID = 0.0 > 11. < / RTI > The method according to claim 1,
Wherein 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.

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