JP5224984B2 - Sighting device - Google Patents

Description

  The present invention relates to an aiming device for a surveying instrument (hereinafter simply referred to as an aiming device).

  Since the collimating telescope provided in the surveying instrument has a high magnification and a narrow field of view, it cannot easily collimate a target such as a target. For this reason, an aiming device is attached to the collimating telescope of the surveying instrument in order to point the collimating telescope near the target in advance.

  As such a sighting device, an optical sighting device 8 as shown in FIG.

  The optical sight 8 includes a light diffusing plate 22 and a mark plate 16 on which a sighting mark 18 such as a triangle or crosshair is drawn at the front end 26 of the lens barrel 10, and a convex eyepiece at the rear end of the lens barrel 10. 24 is arranged. A mounting plate 12 having a screw hole 14 is provided at the lower part of the lens barrel 10 for mounting to the surveying instrument with a screw or the like. In the optical sighting device 8, the light emitted from one point on the sighting mark 18 placed at the center of the mark plate 16 is converted into a substantially parallel light beam by the eyepiece lens 24, so that an appropriate distance is set backward from the optical sighting device 8. If it is looked down, the aiming mark 18 can be seen far away on the optical axis 20 of the optical sighting device 8. Therefore, as shown in FIG. 5, the aiming mark 18 and the distant target 3 can be clearly seen simultaneously, so that the aiming work for aligning the aiming mark 18 that appears far on the optical axis 20 with the target 3 is easy. In addition, high-precision aiming can be achieved even with the small optical sighting device 8.

In a surveying instrument equipped with a comparatively low-magnification collimating telescope, as shown in FIG. 6, a collimator 6 in which an sight 2 and a sight 4 are attached to a collimating telescope 5 may be used. The sight 6 using the sight 2 and the sight 4 is based on the same principle as the sight used for a rifle, etc. The observer's eyes 7 are placed behind the sight 4, and the target 3 and the sight 2 The target 3 is aimed by rotating the collimating telescope 5 so that the sight gate 4 is positioned in a straight line, and the aiming is easy with a very simple configuration.
Japanese Patent Laid-Open No. 10-132666

  By the way, the sighting device 6 using the sight 2 and the sight 4 is easy to grasp the positional relationship among the target 3, the sight 2 and the sight 4, and is easy to aim. However, since the distances to the target 3, the illuminant 2 and the turret 4 are different, the target 3 and the illuminant 2 are blurred so that the sight 2 is blurred when the target 3 is gazed and the target 3 is blurred when the sight 2 is gazed. There was a problem that the aiming accuracy was poor because the sight gate 4 could not be seen clearly at the same time. In particular, in a small surveying instrument, the short distance between the sight 2 and the sight 4 also deteriorates the accuracy.

  On the other hand, although the optical sighting device 8 is small, it can aim with high accuracy. However, if the observer's eye 7 is displaced from the optical axis 20 of the optical sighting device 8, the sighting mark 18 will be lost, and the sight 2 and the sighting will be lost. Compared to the sighting device 6 using the gate 4, there is a problem that the aiming work is troublesome and the aiming is not easy.

  In order to solve the above-described problems, an object of the present invention is to provide a surveying instrument aiming device that is small in size and highly accurate and easy to aim.

  In order to achieve the above object, a surveying instrument sighting device according to a first aspect of the present invention includes an optical sighting device and a sighting gate disposed on an optical axis behind the optical sighting device.

  According to a second aspect of the present invention, in the optical sighting device according to the first aspect of the present invention, a lens barrel protruding portion protruding rearward from the optical sighting device is provided, and the illuminating tube is provided at the rear end of the lens barrel protruding portion. A gate was established.

  According to the first aspect of the present invention, since the sight is arranged on the optical axis behind the optical sight, an appropriate distance is placed behind the sight, and the optical sight and the sight can be seen to overlap each other. If the eyes are placed, the eyes can be positioned substantially on the optical axis, and it is easy to find the aiming mark, and it is easy to rediscover even if the aiming mark is lost. In addition, since the aiming mark can be seen far away on the optical axis, the aiming mark and the far target can be clearly seen simultaneously. Therefore, according to the aiming device of the present invention, high-precision aiming can be achieved even with a small aiming device, and the aiming is easy.

  According to the second aspect of the present invention, the lens barrel projecting portion projecting rearward from the optical sighting device is provided, and the sight gate is provided at the rear end of the lens barrel projecting portion, so that the optical sighting device and the sighting device are provided. Since the gate is integrated, it is not necessary to adjust the position of the sight gate, and the time required for attaching the aiming device can be the same as the conventional one.

  First, a sighting device according to an embodiment of the present invention will be described in detail with reference to FIGS.

  As shown in FIG. 1, the sighting device 30 is provided with a lens barrel protruding portion 32 in parallel with the optical axis 20 of the optical sighting device 8 from the rear end of the optical sighting device 8. A turret 34 is provided at the rear end. Since the configuration of the optical sighting device 8 is the same as that of the conventional one shown in FIGS. 4 and 5, the same parts are designated by the same reference numerals and the description thereof is omitted. Although the cross-sectional shape and thickness of the lens barrel protruding portion 32 are not particularly limited, the lens barrel protruding portion 32 is smoothly continuous with the lens barrel 10 of the optical sighting device 8, ensures a thickness that is not easily damaged, and the light of the optical sighting device 8. In order to make it easier to grasp the position of the shaft 20, the lower half of the lens barrel 10 is substantially extended except for the upper half. In addition to the triangle as shown in FIG. 1, the turret 34 is a ring shape that is concentric with the lens barrel 10 as shown in FIG. 2A, and an inverted triangle as shown in FIG. Appropriate shapes such as notches are possible.

  According to the aiming device 30 of the present embodiment, since the sight 34 is arranged on the optical axis 20 behind the optical sight 8, the optical sight 8 and the sight 34 overlap as shown in FIG. 3. If an eye is placed at a visible position, the eye can be positioned substantially on the optical axis 20. For this reason, it is easy to find the aiming mark 18, and it is easy to rediscover even if the aiming mark 18 is lost, and the aiming is easy. Further, if the optical sight 8 is removed from an appropriate distance behind the sight, the sighting mark 18 can be seen far away on the optical axis 20 through the eyepiece 24, so that the sighting mark 18 and the far target 3 can be clearly seen simultaneously. Can see. Therefore, according to this aiming device 30, even a small aiming device 30 can aim with high accuracy and easy aiming.

  In this sighting device 30, a lens barrel projecting portion 32 projecting rearward from the optical sighting device 8 is provided, and a sight gate 34 is provided at the rear end of the lens barrel projecting portion 32, so Since the gate 34 is integrated, it is not necessary to specifically adjust the position of the sight 34, and the time required for mounting the aiming device 30 can be the same as in the prior art. The sighting device 30 is provided on each of the upper and lower surfaces of the collimating telescope 5 so that the sighting telescope 5 can be aimed even when it is inverted.

  By the way, the present invention is not limited to the above-described embodiments, and various modifications can be made. For example, in the above-described embodiment, the optical sight 8 and the sight 34 are integrally formed. However, the optical sight 8 and the sight 34 may be separated. In this case, it is only necessary to fix the sight gate with a screw or the like to a surveying instrument equipped with a conventional optical sight, so that an existing surveying instrument can be easily modified. Further, for easier aiming, the aiming mark 18 may be illuminated from behind the mark plate 16 with an illumination device such as a light emitting diode (see Japanese Utility Model Laid-Open No. 58-120915). Further, the turret 34 may be appropriately illuminated with a lighting device.

It is a perspective view of the aiming device concerning the 1st example of the present invention. It is a perspective view explaining another Example of the sight gate in the said sighting apparatus. It is a figure explaining the method of aiming with the said aiming apparatus. It is a perspective view of the conventional optical sight. It is a figure explaining the method of aiming with the said optical sighting device. It is a figure explaining the sighting device using the conventional sight and sight.

Explanation of symbols

8 Optical sighting device 20 Optical axis 30 Surveying device sighting device 32 Lens barrel projecting part 34 Sight gate

Claims (2)

  A surveying instrument sighting device comprising: an optical sighting device; and a sighting gate disposed behind the optical sighting device on the optical axis of the optical sighting device.   The sighting device for a surveying instrument according to claim 1, wherein a lens barrel projecting portion projecting rearward from the optical sighting device is provided, and the sight is provided at a rear end of the lens barrel projecting portion.

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