RU221960U1 - RANGE SIGHT - Google Patents

Abstract

The utility model of the device relates to the field of optical instrumentation for use in armored vehicles in day and night conditions for terrain observation, target detection and recognition, and range measurement with a laser range finder. The rangefinder sight contains a head part consisting of a cap with protective glass, two prism-cubes of different spectral ranges combined into a prism block, a sighting-rangefinder and a thermal imaging channel, vertically mounted on the flange of the prism head. The sighting-rangefinder channel is a laser transceiver equipped with a emitting channel with a laser emitter, and a receiving channel with a photodetector with electronic control systems, a daytime two-channel optical sight, including a narrow-field high-magnification channel and a wide-field channel with aiming reticles. The sighting-rangefinder channel includes a projection system that ensures the formation of a video image from the microdisplay in the sight eyepiece. The thermal imaging channel contains a thermal imaging lens with narrow and wide fields of view, a photoreceiving device that converts the thermal radiation of observation objects into a video signal and displays the video image on a microdisplay and generates service information in the video signal. The image of the optical and thermal imaging channels is displayed in one eyepiece. To display video information in the eyepiece of the sight and ensure the operation of the optical circuit of the sighting device, the rangefinder sight uses a system for combining the sighting-rangefinder and thermal imaging channels using an AR-90° prism. The AP-90° prism is rotatable and provides alternate change of the image formed in the eyepiece from a narrow-field sighting image to a thermal imaging and wide-field sighting image and vice versa. The prismatic head ensures guidance of the line of sight of the sighting-rangefinder and thermal imaging channels in the angle range from minus 10° to plus 77°, which makes it possible to provide the entire range of aiming angles for the weapon of the target in the vertical plane and reduce the dimensions of the product.

Description

The utility model relates to the field of optical instrumentation and can be used in armored vehicles in day and night conditions to monitor terrain, detect and recognize targets, and measure range with a laser range finder.

There is a known observation device-sight with a remote control for use in fire control systems of armored vehicles, which includes a head part with protective glass and a head mirror and the main part of the device containing a thermal imaging channel with a thermal imaging lens and a thermal imaging photodetector device, the optical axis of which is located with an inclination relative to the vertical axis, as well as a laser rangefinder with emitting and receiving channels, a television channel with a wide field of view, a television channel with a narrow field of view. The device ensures the operation of television channels with different magnifications, provides a range of vertical pointing angles for all channels from minus 10° to plus 70° (Patent RU No. 2776633 C1, IPC G02B 23/12, F41G 3/06, priority date 09.22.2021. )

The closest in technical essence is the optical-electronic unit (patent RU No. 210937 U1, IPC G02B 23/12, F41G 3/06, priority date 09.20.2021, conventional priority 02.25.2021 BY u20210042), containing two sighting and observation devices channel and a built-in laser rangefinder, one sighting and observation channel is a thermal imaging channel, the other is an optical channel of variable magnification and includes an optically connected head prism, a first lens, a spectrum dividing prism, a collective, an aiming mark formation system, a wrapping system for changing magnifications and an eyepiece, a laser rangefinder includes a separate emitting channel containing an optically coupled laser, a forming optical system, an exit pupil displacement system and a receiving channel, which before the spectrum-separation prism is combined with an optical channel of variable magnification, and after it contains a matching optical system and a photodetector. The block has two alignment systems, as well as a system for forming an aiming mark, containing the first and second reticles.

The disadvantages of the known technical solutions are:

limited range of vertical angles of line of sight;

quite large dimensions of the head part.

The main objectives of the utility model are to increase the range of vertical pointing angles, reduce the dimensions of the product, and output the sighting and thermal imaging images into a single eyepiece.

The technical result of the utility model is a sight, the head part of which is made in the form of two prism-cubes of different spectral ranges, combined into one prism unit and optically connected to the sighting-rangefinder and thermal imaging channels, which makes it possible to reduce the dimensions of the head part of the sight and ensure sighting line of sight - rangefinder and thermal imaging channels in the angle range from minus 10° to plus 77°, allowing you to increase the weapon pointing angles of the target in the vertical plane.

The specified technical solution is achieved by the fact that the sight-rangefinder contains a prism head, made in the form of a prism block containing two prism-cubes of different spectral ranges and two vertically located channels installed on the flange of the prism head, a sighting-rangefinder channel containing a laser transceiver, equipped with a emitting channel with a laser emitter, a receiving channel with a photodetector, electronic control systems, a daytime two-channel optical sight, including a narrow-field high-magnification channel and a wide-field channel with aiming reticles, as well as a projection system that ensures the formation of a video image from a microdisplay into the sight eyepiece when working with thermal imaging channel in narrow and wide fields of view, containing an optical system for combining the image of the sighting-rangefinder and thermal imaging channels, made in the form of an AR-90° prism for forming an image in the eyepiece, which is common to the optical and thermal imaging channels.

The solution to this problem is ensured by the fact that the AR-90° rotating prism is introduced into the rangefinder sight, which ensures alternate change of the image formed in the eyepiece from a narrow-field sighting to thermal imaging and a wide-field sighting and vice versa.

The inventive rangefinder sight allows for guidance of the line of sight in the vertical plane in the angle range from minus 10° to plus 77° while simultaneously reducing the dimensions of the head part through the use of a prism unit and displaying the sighting and thermal imaging images in a single eyepiece due to the system of combining channels with the projection system and prism AR-90°.

The proposed utility model is illustrated by the following graphic materials:

fig. 1 - optical diagram of the sight-rangefinder;

fig. 2 - optical diagram of the sighting-rangefinder channel;

fig. 3 - optical diagram of the thermal imaging channel.

The rangefinder sight contains a head part and two channels: a sighting-rangefinder (Fig. 2), which is an optical channel of variable magnification, and a thermal imaging channel (Fig. 3) with two fields of view, which are optically interconnected by head prisms.

The head part of the device consists of a cap with protective glasses pos. 1, 2 (Fig. 2), pos. 3, 4 (Fig. 3), two prism cubes pos. 6 (Fig. 2) and pos. 12 (Fig. 3) different spectral ranges, combined into a prismatic block pos. 5 (Fig. 1), which rotates using a belt transmission in the vertical guidance plane from the drive shaft associated with the weaponry of the application object.

Figure 2 shows the optical diagram of the sighting-rangefinder channel, consisting of two protective glasses pos. 1 and pos. 2, a prism-cube pos. 6, a separate emitting channel with a laser emitter pos. 7 (fig. 1), a receiving channel with photoreceiving device pos. 8, electronic control systems, daytime two-channel optical sighting device, including a high-magnification narrow-field sighting channel pos. 9 and a wide-field channel with aiming reticles pos. 10. The sighting-rangefinder channel also includes a projection system, position 11 (Fig. 1), which ensures the formation of a video image from the microdisplay into the eyepiece of the rangefinder sight, position 17, when working with the thermal imaging channel.

Figure 3 shows the optical diagram of the thermal imaging channel, consisting of two protective glasses pos. 3 and pos. 4, a prism-cube pos. 12, a thermal imaging lens pos. 13 with narrow and wide fields of view and a photodetector device pos. 14, which provides converting the thermal radiation of observation objects into a video signal for the purpose of their detection and recognition, displaying the video image on the microdisplay pos. 15 (Fig. 1) and generating service information in the video signal.

The system for changing the magnification of the sighting channel with switching to thermal imaging contains four lenses and a projection system with a microdisplay, while the system for forming the aiming mark contains a viewing and sighting reticle. The image of the optical and thermal imaging channels is displayed in one eyepiece, position 17 (Fig. 2). For this purpose, the sight uses an optical system for combining the sighting-rangefinder and thermal imaging channels, and an AR-90° prism, position 16, is installed along the beam path (Fig. 2). The AP-90° prism is rotatable and provides alternate change of the image formed in the eyepiece from a narrow-field sighting image to a thermal imaging and wide-field sighting image and vice versa.

The variable magnification viewing channel ensures the functioning of the rangefinder sight in the visible spectral range with the ability to change the magnification from 2.5 times to 12 times, and the thermal imaging channel expands the operating spectral range of the device to 3.7 - 4.8 microns, which allows for round-the-clock operation rangefinder sight.

New features in the utility model provide the stated technical result, a rangefinder sight, which includes a prism block consisting of two prism-cubes of different spectral ranges, optically connected to the sighting-rangefinder and thermal imaging channels, which makes it possible to reduce the dimensions of the head part of the sight and provide guidance of the line of sight of the sighting-rangefinder and thermal imaging channels in the angle range from minus 10° to plus 77° in the vertical plane, also due to the system of combining channels with a projection system and an AR-90° prism, alternately outputting the sighting and thermal imaging images into a single eyepiece, which allows the operator to observe the background-target environment without changing the position of the eyes.

Claims (1)

A rangefinder sight containing a prismatic head and two vertically located channels installed on the flange of the prismatic head, a sighting-rangefinder channel containing a laser transceiver equipped with an emitting channel with a laser emitter, a receiving channel with a photodetector, electronic control systems, a daytime two-channel optical sight, including a narrow-field high-magnification channel and a wide-field channel with sighting reticles, as well as a projection system that ensures the formation of a video image from the microdisplay into the eyepiece of the sight when working with a thermal imaging channel and a thermal imaging channel with narrow and wide fields of view, containing an optical system for combining the sighting-rangefinder and thermal imaging channels , made in the form of an AP-90° prism for viewing images through the eyepiece, which is common to the optical and thermal imaging channels, while the AP-90° prism is rotatable and ensures an alternating change of the image formed in the eyepiece from a narrow-field sighting to a thermal imaging and wide-field sighting and vice versa , characterized in that the head part is made in the form of a prism block containing two prism-cubes of different spectral ranges, providing guidance of the line of sight in the vertical plane in the angle range from minus 10° to plus 77° of the field of view and reducing the dimensions of the head part of the sight.