JPS58205125A - Aiming mechanism - Google Patents

Abstract

PURPOSE:To perform accurate sighting operation, by correcting the position of the eye to an ocular during sighting so that the aiming point of a sighting reticle coincides with the parallax correction mark of a parallax correction reticle. CONSTITUTION:The sighting reticles 20 and parallax correction reticle 25 are arragned between an objective system 10 and an ocular system 30 on the optical axis. The parallax correction reticle 25 uses an annular pattern and the sighting reticle 20 uses a cross line; when the centers of both reticles 25 and 20 coincide with each other, the annular pattern and cross line pattern are put together and the pattern shown in a figure is observed. In this case, the position of the naked eye is on the optical axis and the position of the naked eye during sighting operation is therefore set on the optical axis easily while the patterns consisting of both reticles 245 and 20 is observed, performing accurate parallax-free sighting operation.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an aiming device, and particularly to the structure of a reticle used for aiming.

In order to shoot accurately, the sighting glasses and blade must be used with an optical sighting device.Such a sighting device is basically It consists of the following configuration: S, 1+91J lens thread 1, z1, located on the focal plane of object lens system 1, aiming reticle 2
and the eyepiece lens system 3. The PIl t) 411 focal point of the eyepiece system 3 is aligned with the focal plane of the objective lens 1 and the position of the reticle. The mouth and Ii (7, c
Aiming operations are now possible.

i6, specifically, to make the image of the aiming object into an erect image (1) to make the image of the aiming object into an erect image (1, whether an erect lens system or an erect prism thread is necessary, explanation υ) of closed simplification Tameko no 1
There is also an omission.

With this aiming device, the aiming object image by the objective lens system IK perfectly matches the reticle i++ of the aiming reticle 2 (indicated by the X mark in the figure). Even if σ)(1/[ is slightly changed, there will be no relative deviation between the image of the aiming object and the reticle surface, so it will not affect the movement of the reticle very much.

However, when actually manufacturing and using sighting glasses, the image formation position of the objective lens system and the position of the reticle surface may not necessarily match, as described above.

For example, H
111x Which influence is the focus position of the objective lens thread?

In addition to the relative slippage with the tickle, the imaging position of the objective lens system changes depending on the distance S to the aiming object, so the image of the aiming object and the reticle surface σ) depend on the aiming object distance. There will be a relative gap between
C becomes. For this reason, Figure 2 shows a case where scratches occur between the aiming object 4 and the reticle surface of the reticle 2, and parts common to those in Figure 1 are given common symbols. It is. In this case, when the image 4 of the IC illumination object and the reticle surface do not match, when you look into them through the eye lens system 3, a parallax will occur between the two depending on the position of the naked eye. become. This will be explained with reference to FIG. Figure 3 is a model diagram of the case where the optical axis at the center of the retina of the eyepiece [E] is shifted upward by h from the axis of the eyepiece system 30, and point Q in the figure shows that the reticle surface is located at the eyepiece system 30. Point P indicates the point where the image of the aiming object intersects the optical axis of the eyepiece thread 30.1, Now point P is at the focal position of the eyepiece system 3. The deviation is the light incident on the eyepiece thread 3 at a point R1 in the eyepiece lens 3, i.e., at approximately the same height as the center of the retina of the naked eye, as is the point P. 3. On the other hand, a ray that passes through point Q, which is X apart from point P, and passes near point R in eyepiece system 3, after passing through eyepiece system 3, reaches the position of retinal center P'. , becomes a ray S and reaches a position Q' on the retina, which is different from P'.

At this time, the angle θ formed by the light -8 and T is, if X is small and the focal length 4 of the eyepiece lens system 3 is f6, then the angle θ is h−x/(f'e)”・(
1), which appears as parallax,
Also, if the aiming glasses are 4M, 07M will be 8 in the actual field of view.
This causes parallax, which causes aiming errors. Note that if you set h=o at Yamatake 2, that is, if the naked eye is on the optical axis, 0=0 and no parallax will occur, but in actual use, if you set the naked eye on the optical axis, It is very difficult to fix it because it cannot be confirmed.

In order to make it easier to understand, Figure 3 is shown as a model, so the distance X between the two points Q is exaggerated, but in reality, the images of the reticle and the aiming object are the same as those of the eyepiece system 3. If both are set within a range where the blur is not noticeable,
Since x O) 114 is very small, the ray S will pass very close to R8(J).

The present invention solves six drawbacks of the conventional aiming device as described above.
It has been modified so that it can be easily aligned with the naked eye on the optical axis of the sighting glasses system and fixed there. Such an object of the present invention is to provide an I'JT steel sighting reticle in a sighting device to a sighting moon (JL, Nata) v and fJ! It consists of a reticle for correction and correction, and the reticle for both forces of - is on the original axis, but the blur of the 4m eye lens is within the allowable range -C! This is achieved by arranging the 7L. The embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 4 shows an embodiment of the present invention, in which an aiming reticle 20 and a viewpoint correction reticle 25 are arranged on the optical axis between the objective lens system 10 and the eyepiece system 30. There is.

Regarding these reticles, if a circular butter as shown in Fig. 5 (4) is used as the parallax correction reticle 25 and a crosshair as shown in Fig. 5 (B) K is used as the aiming reticle, When the centers of both reticles are aligned, the pattern shown in FIG. 5(C) can be observed. And this fifth
In order for the pattern shown in Figure (C) to be observed, the position of the naked eye must be on the optical axis. Therefore, the position of the naked eye during aiming operation can be easily determined on the original axis while observing the patterns obtained by both reticles, and accurate aiming can be performed without left or right cutting.

In addition, in the configuration shown in FIG. 4, the circular reticle 20.2
5 will be exposed to the eyepiece system 30, so the placement positions of these reticles will be the same as the eyepiece system 3.
The blur needs to be within an acceptable range when viewed from 0. Also, in order to easily correct the parallax, it is best to keep the two reticles 20 and 25 as far apart as possible.

Figure 6 shows another embodiment of the present invention.

In this embodiment, a reticle based on four laws of projection light is used as a reticle for correcting parallax. In Fig. 6, the objective lens system 10 and the eyepiece system 30 are the same as those in the embodiment shown in Fig. 4, and 20 m is an aiming reticle;
25a is a reticle for correcting parallax, 4θ is a projection lens system, b
0 is an illumination system, 6G is a half mirror, and 251' is a projection lens system 40 of a parallax correcting reticle 25 m. Even with this configuration, it is possible to achieve the desired purpose by using the eyepiece lens system 30 to illuminate both lenses.
Since the image can be seen by observing the eyepiece V-lens system 30, it is further facilitated to align the sighting reticle 20m and the image 25' of the parallax correcting reticle ta:4a.

Further, in the embodiment shown in FIG. 6, the 20 m visual field reticle may be used as a reticle, and the aiming reticle may be used as an optical 11:1 type, and in any case, both of these reticles may be It is safe to have a gun festival within the allowable md.

As mentioned above, in the sighting device according to the present invention, the position of the naked eye can be easily aligned and fixed with the optical axis when aiming, so it is easy to aim accurately. It is very practical. It goes without saying that the present invention can also be effectively utilized when performing boresight in which the reticle is moved in a plane perpendicular to the optical axis in a sighting eyeglass system.

[Brief explanation of the drawing]

Figure 1 shows an example of a conventional aiming devicejJ) Aj! It is a configuration diagram of M. FIG. 2 is a state diagram when aiming parallax occurs in the device shown in FIG. 1. FIG. 3 is an explanatory diagram explaining how parallax occurs in the state shown in FIG. 2. 5 is a principle configuration diagram showing an embodiment of the device of the present invention. FIG. Fig. 6 is a diagram showing the observation pattern. Fig. 6 is a principle configuration diagram showing another embodiment of the device of the present invention. 1.10... Objective lens system, 2... Aiming reticle,
3.30... Eyepiece system, 4... Image plane by objective lens system, 20a... Reticle for aiming, 25a...
Reticle for correcting parallax, 40... Projection lens system, 50... Illumination system, 60
...Half mirror-0 Figure 1 wIPJd Figure (/'l) (5) (C
) Shadow 5 Open Fig. 6

Claims (1)

[Claims] (1) In an aiming device having at least an objective lens thread, an eyepiece thread, and an aiming reticle, an aiming reticle in which the focal point thIic of the objective lens thread is arranged is purchased from among an aiming reticle and a parallax correction reticle, and the aiming reticle and the aiming reticle are Parallax correction reticles are arranged so that when the eyepiece thread is bent and observed, they are spaced apart from each other on the optical axis within a range of 1 visible blur, and when aiming, they are used to correct the aiming point of the aiming reticle. An aiming device, characterized in that the position of the eye relative to the eyepiece is corrected by 1 so that the parallax mark on the reticle overlaps with the 1st parallax mark, so that accurate aiming operation can be performed in a straight forward manner (21 AI aiming reticle Alternatively, the aiming device according to claim 1, wherein 10,000 of the parallax correcting reticles are original type reticles using a projection optical system.