JPH0640913U - Optical sighting device - Google Patents

Abstract

(57) [Summary] [Purpose] Change to an appropriate starlight image by a simple operation according to the purpose of shooting and the situation of shooting. [Structure] A light source chamber 6 for accommodating a light source 5 is provided in a sighting barrel 2, and a mask ring 10 in which light projecting ports 6a are provided with through holes 7, 8 and 9 of required diameters at required intervals is rotatable. And a concave half mirror 3 provided on the back surface of the objective lens, with one of the through holes 7, 8 and 9 facing the light projecting port.
A light image of the star is convertibly projected onto a.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an optical sighting device capable of converting the size of a starlight image of a sighting device.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, there is known a star that optically projects light from a light source arranged off the line of sight on a mirror surface formed in an objective lens.

[0003]

[Problems to be solved by the device]

 In the above-mentioned conventional structure, the light image to be a star depends on the object such as the lamp that constitutes the light source, so that it can be easily adapted to the shooting purpose or target mode each time. Could not be converted. This invention was made to solve this problem.

[0004]

[Means for Solving Problems]

 A light source chamber for accommodating a light source is provided in the barrel of the sighting device, and a mask ring having a plurality of through holes each having a required aperture at a predetermined interval is rotatably disposed in the light projecting port. One of them is an optical aiming device that opposes the light projecting port and projects a star light image in a convertible manner on a concave half mirror provided on the back surface of the objective lens.

A shield sleeve may be integrally connected to the mask ring to shield the inner diameter side of the barrel of the light source chamber, and the mask ring 10 may be integrally formed with a finger hook 12 and It is good that it can be operated from the outside.

[0006]

[Action]

 Since this invention is constructed as described above, the illuminating light image projected onto the concave half mirror of the object lens is converted by the aperture of the through hole of the mask ring.

[0007]

【Example】

 The present invention will be described below with reference to the drawings showing an example of an embodiment. Reference numeral 1 is a sighting device, 2 is a sighting device barrel, 3 is an objective lens, and a rear surface is provided on a concave half mirror 3a.

Reference numeral 4 is an eyepiece lens, 5 is a light source, and an LED is used. The LED is provided in a light source chamber 6 provided in the sighting barrel 2 and a light projecting port 6a into the barrel is shown in FIG. As shown in the drawing, a mask ring 10 having through holes 7, 8 and 9 having different diameters through which light passes is provided at a required interval so as to be rotatable.

The mask ring 10 may be integrally formed with a shield sleeve 11 that shields the inner diameter of the light source chamber 6 shown in FIG. Reference numeral 12 is a finger rest of the mask ring.

Since the present invention is configured as described above, when the ring mask 10 is rotated by placing a finger on the finger rest 12 and rotating the ring mask 10, an image of the star light image projected on the back surface of the objective lens 3 is obtained. You can change the size.

[0011]

【effect】

 Since this invention is as described above, what is to be shot, whether it is moving or stationary, the purpose of the shooting, or the location and time of the shooting should be appropriate for the situation. It is possible to change the illuminant image with a simple fingertip operation.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing an optical sighting device according to the present invention.

FIG. 2 is a front view of the mask ring itself, which is also a main part thereof.

FIG. 3 is a perspective view of an embodiment in which a masking sleeve sleeve is also connected to the mask ring.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sighting device 2 Sighting device barrel 3 Objective lens 3a Concave half mirror 4 Eyepiece 5 Light source 6 Light source chamber 6a Light emitting port 7 Through hole 8 Through hole 9 Through hole 10 Mask ring 11 Shield sleeve 12 Finger rest

Claims (3)

[Scope of utility model registration request] 1. A mask ring 10 in which a light source chamber 6 for accommodating a light source 5 is provided in a sighting barrel 2 and through holes 7a, 8 and 9 of a required diameter are provided in a light projecting port 6a thereof at required intervals. A concave half mirror 3 provided movably, one of the through holes 7, 8, 9 facing the light projecting port and provided on the back surface of the objective lens.
An optical aiming device for projecting a starlight image onto a. 2. The optical aiming device according to claim 1, wherein a masking sleeve 11 is integrally connected to the mask ring 10 to shield the inner diameter side of the sighting device barrel 2 of the light source chamber 6. 3. The optical aiming device according to claim 1, wherein a finger hook 12 is integrally connected to the mask ring 10 and provided so as to be operable from the outside.