JP2017509858A - Optical device utilizing ballistic zoom and method for aiming a target - Google Patents

Abstract

The method of aiming at a target includes receiving an initial condition of the optical device. The initial conditions include a ranging element size and a range associated with the ranging element size. The method further includes receiving ballistic information and receiving an image from the image sensor. At least a part of the image is displayed on the display unit. The ranging element is superimposed on the displayed part of the image. A first zoom input is received to set a first zoom value corresponding to a first distance from the optical device. The method further includes determining a first projectile position based on the first distance and ballistic information. [Selection] Figure 11

Description

CROSS REFERENCE TO RELATED APPLICATIONS This application is filed on February 4, 2015 as a PCT international patent application, the entire disclosure of which is hereby incorporated by reference. Filed on Feb. 7, 2014, a continuation-in-part of US patent application No. 13 / 786,383, filed March 5, 2013, a continuation-in-part of provisional application 13 / 412,506 Claims priority to US patent application Ser. No. 14 / 175,803.

  When shooting long-range fire with a firearm, the shooter first begins with the distance to the target (the “range”), the bullet flight characteristics and gravity-induced bullet fall (“fall”), and the wind blowing at the time of firing. The firing solution must be determined based on the crosswind component ("drift").

  Typically, archers tape charts on the sides of their weapons, or store values for each correction of “fall” and “drift” at various “ranges” and wind speeds. . The shooter must then correct for each of these component values. Two methods are generally used for this purpose. The first is to manually adjust the turret on the optical aiming device such that the reticle guides the shooter to the corrected target position. A second alternative is to use what is commonly referred to by those skilled in the art as "holdover". There are many types of optical aiming devices with calibrated reticles for this purpose. The shooter places targets at different positions on the reticle based on the scale.

  There are many “optical solutions” to the “automatic firing solution” problem cited in the prior patents. However, few exist on the market because of the high cost of automatically moving optical components and the difficulty of maintaining accuracy while receiving repeated impacts from weapons.

  A first embodiment of a target device or apparatus according to the present disclosure senses gravity in relation to an image sensor and a lens for acquiring a video image of an object to which the aiming device is aimed; an image processor; A tilt sensor for; a display component for displaying a video image captured by the image sensor and processed by an image processor; an eyepiece that allows a user to observe the display component; and a pressure for detecting atmospheric conditions And a temperature sensor; and means suitable for housing the component.

  The device provides a completely “solid-state digital” and “hands-free” solution for the task of accurately firing weapons at long ranges. The shooter can input all the information necessary for long-range shooting at the time of firing without removing the hand from the weapon, simply by tilting the weapon left and right.

  A predetermined threshold angle defines the tilt function. For illustration purposes, let's assume that this angle is 10 degrees. If the weapon tilt angle is less than 10 degrees in either the left or right direction, a calculation for crosswind drift adjustment is performed. One representation of the adjusted crosswind drift is superimposed on the video image presented to the shooter, with a line of sight suitable for defining the aiming point. If the tilt angle is greater than 10 degrees in either direction, the number of ranges overlaid on the video image is gradually increased or decreased depending on the direction and magnitude of the tilt angle greater than 10 degrees. . The field of view of the video image presented to the shooter, (magnification), is simultaneously increased or decreased in relation to the “range” number when the field of view is within the field of view defined by the front lens and the image sensor.

  A “range” discovery circle is also superimposed on the video image. This circle represents the default target size. A circle remains a fixed size on the display component when the field of view is larger than its minimum. If the field of view is minimal, the size of the “range” discovery circle is progressively adjusted to a smaller size in relation to the “range” setting. To find the distance to the target, the shooter adjusts the range setting by tilting the weapon more than 10 degrees left or right until the target fits the range finding circle.

  As described above, the apparatus provides a durable aiming device without visible external control. All ballistic calculations required for long-range shooting are performed automatically in relation to internal sensors, and settings are performed by tilting the weapon, which makes the use of the aiming device simple and easy .

  Another embodiment according to the present disclosure includes a tubular housing having a central axis and a first end and a second end, a compatible digital camera module carried by the first end of the housing, Is a digital target scope device. The camera module includes at least one focusing lens spaced axially from an image sensor assembled perpendicular to the lens axis on a sensor circuit board inside the camera module. The image projected by the lens is focused at a predetermined location on the sensor. A control / display module having a longitudinal axis is removably fastened to the second end of the housing. The control / display module is electrically connected to the camera module through a connector on the sensor circuit board of the camera module. The connection is made when the control / display module is installed in the second end of the housing. The control / display module has a control portion that includes a circuit board and display components assembled thereon, and includes a display portion that houses an eyepiece assembly aligned with the display components.

  The control portion of the control / display module preferably includes a power supply, a tilt sensor, an external computer connector, an image processor, a memory and a switch pair, all on an axially oriented printed circuit board within the control / display module. Connected to the printed circuit. The camera module and the control / display module are coaxially aligned within the tubular housing. The control / display module is configured to allow the user to select between configurable pre-programmed parameters when the control / display module is spaced from the camera module and rotated about its longitudinal axis. ing. Selection of one or more of the preprogrammed parameters is made by activating one or more of the switch pairs.

  A tilt sensor within the control / display module is configured to measure a tilt angle about the housing axis and cause the image processor to generate an adjusted target image in response to the measured tilt angle. The image processor is configured to cause a change in the field of view of the displayed image upon receiving from the tilt sensor a measured tilt angle that is greater than the threshold angle. An inclination angle greater than zero and less than the threshold angle causes the drift adjustment indicator in the field of view of the display image to change position.

  The control / display module allows the user to select between configurable pre-programmed parameters when the control / display module is spaced apart from the camera module and held horizontally and rotated about its longitudinal axis. It is configured.

  In one aspect, the present technology provides a method for aiming a target: receiving an initial condition of an optical device, wherein the initial condition includes a ranging element size and a range associated with the ranging element size. Including: receiving ballistic information; receiving an image from an image sensor; displaying at least a portion of the image on a display; and overlaying a ranging element on the displayed portion of the image Receiving a first zoom input to set a first zoom value, wherein the first zoom value corresponds to a first distance from the optical device; And determining a first projectile position based on ballistic information. In one embodiment, the method further includes displaying a first region of interest based at least in part on the first projectile position and the first zoom value. In another embodiment, the method further includes displaying a first symbol corresponding to the first projectile position. In yet another embodiment, the method further includes: receiving a maximum zoom input to set a maximum zoom value, wherein the maximum zoom value is defined by the image sensor region of interest and the display region of interest; Displaying a maximum magnified image associated with the maximum zoom value; receiving a second zoom input to set a second zoom value, wherein the second zoom value is from the optical device. A step corresponding to a distance of two; calculating a size of the adjusted ranging element; overlaying the adjusted ranging element on the displayed maximum magnified image; and a second distance and ballistic information Determining a second projectile position based on; and displaying a second region of interest based at least in part on the second projectile position and the second zoom value. Including; flops and. In yet another embodiment, the method further includes displaying a second symbol corresponding to the second projectile position.

  In another embodiment of the foregoing aspect, the first symbol includes at least one of an impact point at the target and a guide symbol. In one embodiment, the determination of the first projectile position is based at least in part on crosswind input. In another embodiment, the first projectile position determination task is based at least in part on projectile information input, ambient temperature input, gradient input, tilt input, muzzle outlet velocity input, and barometric pressure input. In yet another embodiment, the image sensor has a camera.

  In another aspect, the present technology provides a method for aiming a target: receiving ballistic information; receiving an image from an image sensor; receiving a zoom value; and at least partially in ballistic information. Calculating a projectile trajectory based on; displaying a region of interest based on a zoom value, wherein the region of interest at least partially corresponds to a projectile trajectory. In one embodiment, the method further includes determining a range to the target. In another embodiment, the determining operation includes displaying at least a portion of the image on the display; and overlaying the ranging element on the portion of the image. In yet another embodiment, the method further comprises receiving a zoom input, the zoom input having an updated zoom value; displaying an updated region of interest based on the updated zoom value; ,including.

  In yet another aspect, the technology provides a method for aiming a target: receiving an image from an image sensor; displaying at least a portion of the received image, wherein the displayed portion is displayed. Having a field of view; displaying a ranging element with a fixed size in relation to the displayed field of view; receiving a target size input; receiving a zoom input to set a zoom value And calculating a range to the target based at least in part on the target size input and the zoom value. In one embodiment, the target size input has a default target size input. In another embodiment, receiving the target size input includes receiving the target size input from the storage device. In yet another embodiment, the target size input is selected from a plurality of predefined target sizes.

  In yet another embodiment, the technology is configured to selectively operate a device in a device for aiming a target; a housing; a display; an image sensor; a default zoom mode and a ballistic zoom mode. An increase in zoom level changes the field of view along the optical path from the device to the target and when in ballistic zoom mode, the zoom level Of the device changes the field of view along the ballistic path from the device. In one embodiment, in the default zoom mode, the impact point of the projectile is displayed on the display and the position of the symbol on the display changes based on the zoom level.

  Other features and advantages of the present technology, as well as the technology itself, can be more fully understood from the following description of various embodiments when read in conjunction with the accompanying drawings.

2 is a partial cross-sectional schematic view of one embodiment of a digital target scope according to the present disclosure. FIG. 2 illustrates one embodiment of a target image overlay of the digital target scope of FIG. FIG. 6 is a side view of another embodiment of a digital target scope according to the present disclosure. FIG. 4 is a partial sectional schematic view of the digital target scope of FIG. 3. FIG. 4 is a separate perspective view of the control / display module of the digital target scope of FIG. 3. FIG. 6 is another perspective view of the control / display module shown in FIG. 5. FIG. 7 is a separate perspective view of the control portion of the control / display module of FIG. 6. FIG. 7 is a perspective view of the control portion of the control / display module of FIG. 6 showing the sensor circuit board connected to the control portion. FIG. 4 is a separate cross-sectional schematic view of a compatible camera module of the digital target scope embodiment shown in FIG. 3. FIG. 4 illustrates four representative displays provided by the control / display module of the digital target scope of FIG. A simplified representation of the effect of gravity on the flight of bullets. FIG. 6 depicts a comparison between a captured field of view versus a displayed view for an aiming device using a ballistic zoom technique. FIG. 6 depicts a comparison between a captured field of view versus a displayed view for an aiming device using a ballistic zoom technique. FIG. 6 depicts a comparison between a captured field of view versus a displayed view for an aiming device using a ballistic zoom technique. 3 depicts regions of interest for various magnifications of a conventional optical zoom system. FIG. 6 depicts regions of interest for various magnifications of a ballistic zoom system according to one embodiment of the present disclosure. Describes the relationship between the field of view and fixed size ranging elements. Describes how to aim at the target. Describes how to aim at the target. Describes how to aim at the target. Describes how to aim at the target. FIG. 4 illustrates the process of first aligning or aiming in the apparatus shown in FIGS. 1 and 3 on a weapon such as a rifle. FIG. 4 illustrates the process of determining muzzle velocity (MV) and ballistic characteristics (BC) values for the apparatus shown in FIGS. 1 and 3 for weapons such as rifles for various distances.

  Reference will now be made in detail to the accompanying drawings, which are at least helpful in illustrating related embodiments of the novel technology provided by the present disclosure.

  Referring now to FIG. 1, one embodiment of a digital target scope system 100 is illustrated. In the illustrated embodiment, the system 100 includes an elongated hollow tubular housing 101 having a front end and a rear end. The housing may be made of anodized aluminum or the like. The front lens 102 and the image sensor 103 are assembled proximal to the front end of the housing 101. The front lens 102 is assembled to focus light from the target onto the image sensor 103. An image processor 104, a tilt sensor 105, and a battery 106 are assembled inside the tubular housing 101. Image sensor 103 and tilt sensor 105 are in electrical communication with image processor 104. A control / display module 108 and an image display component 109 are assembled proximal to the rear end of the housing 101. Image display component 109 is in electrical communication with image processor 104. The housing 101 may further include an integrated assembly system (not shown) for the purpose of assembling the aiming device 100 to a weapon (eg, a rifle).

  In this exemplary embodiment, the image sensor 103 is operable to obtain raw target image data. The image processor 104 is operable to receive raw image data from the image sensor 103 and generate a target image based on the raw image data. The image display component 109 is operable to receive a target image from the image processor 104 and display the target image to a user, which may facilitate weapon aiming.

  The tilt sensor 105 is operable to measure the tilt angle of the aiming device 100 and generate angular position data based on the tilt angle. As used herein, the term “tilt angle” refers to the rotational orientation of the aiming device 100 about the central axis of the tubular housing 101. Tilt angle is expressed as a quantity, in degrees, of device rotational displacement (ie angular displacement) while positioned on a horizontal axis through the device from a reference orientation (eg vertical). In one embodiment, the tilt sensor is an accelerometer. An eye sensor 110a disposed in operational communication with the processor 104 proximal to the eyepiece 110 may be utilized as described herein.

  The image processor 104 preferably receives a microprocessor and a memory for storing static information and dynamic information, receives the angular position data from the tilt sensor 105, and adjusts the target image display unit based on the angular position data. Includes with software. Thus, for example, by turning the weapon attached to the aiming device 100 clockwise / counterclockwise while the weapon is directed or aimed along the axis through the barrel of the weapon, the tilt angle is increased. The modification will facilitate control of one or more aiming functions associated with the device. In alternative embodiments, this control and adjustment function of the tilt sensor may be replaced or supplemented with buttons 105a, switches, knobs or other instruments.

  The static information stored in the memory of the image processor 104 includes the coordinates of the optical focus position on the image sensor 103. Since the image sensor 103 is a two-dimensional array of known photosites as pixels, the xy coordinates of the focal point of the lens on the array define the reference position of the center of the display image. These coordinates are burned into the non-volatile memory of the image sensor.

  In the illustrated embodiment of FIGS. 1 and 2, aiming functions such as field adjustment, drop correction, and / or drift correction may be controlled by changing the tilt angle. The threshold tilt angle may define a separate function of the aiming device 100. In one embodiment, the user may control the field of view (ie, effective magnification) of the displayed target image by applying a tilt angle greater than the threshold angle to the aiming device 100. If the tilt sensor 105 detects that the tilt angle is greater than the threshold angle in either direction, the image processor 104 may respond by adjusting the field of view. Whether the field of view is increased or decreased and the speed in that case will depend on the direction and magnitude of the tilt angle.

  In one embodiment, the threshold tilt angle is 10 degrees. Thus, applying a 30 degree tilt angle to the right (ie, clockwise) will rapidly reduce the field of view (ie, increase the magnification factor), which will quickly cause the object in the target image to become larger for the user. You will see it. Conversely, applying a 15 degree tilt angle to the left (i.e. counterclockwise) will slowly increase the field of view (i.e. decrease the magnification factor), which will slowly cause the object in the target image to appear to the user. It will look smaller.

  The target image field of view may have a limit determined by the resolution of the image sensor 103 and the resolution of the image display component 109. For example, the image sensor 103 may have a resolution of 2560 × 1920 pixels and the image display component 109 may have a resolution of 320 × 240 pixels. Accordingly, a minimum field of view (ie, maximum magnification) of the target image can be achieved when data from one pixel on the image sensor 103 controls the output of one pixel on the image display component 109. Accordingly, at the maximum magnification in this embodiment, the image display component 109 can display one-eighth of the data collected by the image sensor 103. The maximum field of view (ie, minimum magnification) of the target image can be achieved when the image display component 109 having 320 × 240 pixels displays all data collected by the image sensor 103 having 2560 × 1920 pixels. Therefore, at the minimum magnification in this embodiment, the data derived from the pixel block collected by the image sensor 103 is combined in a process called “binning” and then to control one pixel on the image display component 109. Sent to. In order to perform range measurement functions with high resolution, the field of view of the target image must be progressively modified with a small width between the maximum and minimum. Thus, the field of view of the image sensor 103 varies in a small range from 2560 × 1920 pixels to 320 × 240 pixels, and the resolution of the image displayed by the image display component 109 remains fixed at 320 × 240 pixels. Thus, in one exemplary embodiment, the aiming device has a variable magnification ratio of 8 to 1. Again, one or more buttons 105a, knobs, or switches may cooperate with the tilt sensor 105 to perform the adjustments described above.

  Referring now to FIG. 2, one embodiment of a target image overlay 200 is illustrated. The microprocessor 104 may overlay the target image overlay 200 on the displayed target image. The target image overlay 200 displays information to the user, which may facilitate weapon aiming. In the illustrated embodiment of FIG. 2, the target image overlay 200 includes a line of sight 201, a range circle 202, a crosswind correction symbol 203, a range number 204, and a scale 205. The aiming line 201 is used to define the aiming position in the target image. The range number 204 displays the range. The range unit of measure can be yards or meters and can be selected by the user. A crosswind correction symbol 203 used in combination with the scale 205 represents the amount of crosswind corrected by the number of miles per hour or the number of kilometers per hour. With any selected UK unit, the illustrated overlay 200 is corrected for crosswinds of 3 miles per hour coming from the right and bullet fall calculated for a distance to a target of 525 yards. I will tell you.

  The illustrated target image overlay 200 includes a ranging element 202. In the depicted embodiment, ranging element 202 is a range circle, but other element shapes may be utilized. The aiming device 100 may measure the distance (ie, range) to the target via the “stadiametric method” using the range circle 202. Range circle 202 represents a predetermined target size. To determine the range to the target, keep the size of the range circle 202 constant until the target image appears to completely fill the range circle (eg by applying a tilt angle greater than 10 degrees). The field of view may be adjusted. Alternatively, if present on the aiming device 100, the button 105a may be pressed to rotate the turret. Image processor 104 may then calculate the distance to the target using trigonometry. For example, the three points consisting of the target's visible top, the target's visible bottom, and the front lens 120 define a right triangle. The distance from the top to the bottom of the target defines the first side of the triangle. The range circle provides a measure of the angle opposite the first side. Thus, the image processor 104 can calculate the length of the adjacent sides of the triangle, ie the distance to the target.

  At very long distances to the target, the target image may not be large enough to fill the range circle 202 even at maximum magnification (ie, maximum field of view). Thus, in one embodiment, when the maximum magnification is reached, the image processor 104 is responsive to a continuous input that reduces the field of view (eg, maintaining the aiming device 100 at an angle that exceeds a threshold angle). You may start to reduce the size of 202. Thus, range measurement will be facilitated even at distances exceeding the maximum magnification. This process is further described below.

  The effect of gravity on the bullet (ie, bullet drop) may be calculated and corrected by the image microprocessor 104 based on variables such as range and ballistic data about the bullet. Ballistic data may be input and stored in the aiming device 100. Examples of such input are described below with reference to additional exemplary embodiments. To facilitate bullet drop correction, the image processor 104 may shift the target image upward relative to the line of sight 201 based on the calculated bullet drop, so that the image is centered on the line of sight. Although visible to the viewer as being centered, the shooter will effectively aim at a point above the target. In other embodiments described below, the image processor 104 may display a region of interest centered on the projectile at a certain distance from the shooter. The shooter will then be required to lift the weapon to align the line of sight on the target. This action corrects bullet drops at any point along the projectile path.

  Wind effects on the bullet (ie, crosswind drift) may be calculated and corrected by the image processor 104 based on variables such as range, ballistic data and ambient wind conditions at the time of firing. Ambient wind conditions may be measured or estimated using techniques known in the art. Crosswind drift may be input into the image processor 104 by applying an appropriate tilt angle to the aiming device 100. To facilitate crosswind correction, the image processor 104 may shift the target image horizontally relative to the line of sight 201 based on a calculated or known crosswind drift, which allows the shooter to target Aim at one point on the windward side. In other embodiments described below, the image processor 104 may display a region of interest centered at the projectile at a certain distance based on crosswind drift. The shooter will then be required to move the weapon to align the line of sight on the target. This action corrects for crosswind drift at any point along the projectile path.

  The user may control the crosswind drift correction function by applying an inclination angle smaller than the threshold angle to the aiming device 100. The magnitude and direction of the tilt applied to the aiming device 100 may control the magnitude and direction of the crosswind input, thus controlling the crosswind correction. For example, if the threshold tilt angle is 10 degrees, a 5 degree tilt angle to the right (ie, clockwise) may correspond to a crosswind drift correction suitable for compensating for 10 mph wind coming from the user's right side. . In contrast, a tilt angle of 3 degrees to the left (ie counterclockwise) may correspond to a crosswind drift adjustment suitable to compensate for 7 mph wind coming from the left.

  The crosswind correction symbol 203 can facilitate the crosswind drift correction by allowing the user to input the crosswind drift more accurately. The image processor 104 slides the side wind correction symbol 203 to the left and right with respect to the line of sight 201 in accordance with the magnitude and direction of the tilt angle, and thereby the side wind drift input transmitted to the image processor 104 to the user Instruct the size and direction.

  Furthermore, the image processor 104 adjusts the position of the displayed target image from left to right so that the target is centered within the line of sight even though the line of sight of the weapon is corrected for the crosswind indicated by the correction symbol 203. Try to stay in a state. For example, in the exemplary illustration of FIG. 2, the crosswind correction symbol 203 indicates a 3 unit (eg, mph) crosswind input from right to left, while the barrel alignment (ie, actual aiming point) of the weapon is Since the display image seen by the shooter is appropriately shifted, the right wind is automatically adjusted for the 3MPH crosswind. Therefore, the shooter must maintain this 3-unit tilt while firing the weapon to automatically correct for crosswind. In an alternative embodiment, the tilt need not be maintained because the shooter may return the firearm to an upright position prior to firing.

  In order to initially align the device 100 on a weapon such as a rifle, the device must first be assembled to the weapon and "sighted in" at a known distance. The working sequence is schematically shown in FIG. This procedure is used to compensate the device for variations in mechanical alignment relative to the weapon barrel. The first vertical adjustment is referred to as mechanical “altitude” correction at the reference distance. Typically for rifles, this is done at a target distance of 100 yards. A second adjustment to compensate for horizontal variations during assembly is called mechanical “windage”. For the device 100, these adjustments are made in software resident on an external device such as a laptop computer, iPad®, smart phone or PC connected to the microprocessor 104 in the device 100.

  Initially, default values assuming perfect barrel alignment, and expected muzzle velocity (MV) values and expected ballistic coefficients (BC) are loaded as default values into device 100 shown as working step 1101 in FIG. The The weapon is then brought to a target range where the target is placed at a known distance, such as 100 yards, and in operation 1102, the device 100 is aimed at the target. This is preferably done when there are no crosswinds affecting the correction being performed. Next, in work step 1103, an initial test shot is fired with the device 100 vertical (no tilt) and aimed in such a way that the line of sight is centered on the target image. In operation 1104, the bullet impact deviation from the target center is measured and recorded. In operation 1105, a second test shooting is performed, and in operation 1106, the bullet impact deviation from the target center is recorded. These test shots are repeated several times in operation 1107. In operation 1108, all of these stored deviation values are entered into the software to generate mechanical altitude and drift correction values for the device 100 on a particular weapon. Finally, in operation 1109, the altitude and drift correction values determined by the software for the device 100 are downloaded to the scope device 100 via its USB port.

  In order to provide the proper muzzle velocity (MV) and the ballistic coefficient (BC) tailored to the weapon, additional test firing at various distances is required. These operations will be described with reference to FIG. These steps are the same as those in FIG. 19 up to step 1208. In operation 1209, the preceding step is repeated for a plurality of different target distances. Thereafter, at operation 1210, deviations are entered into the software to produce the best fit of the data and to generate accurate muzzle velocity and ballistic coefficient data for the particular cartridge being fired within the weapon. These values are then downloaded into device 100 at operation 1211.

  The software code used to create MVs and BCs is based on the well-known projectile Newtonian physics equations. Exemplary equations for this purpose will be found in Arthur J. Pejsa, Modern Practical Ballistics, Kenwood Publishing, 2nd edition. Once these MV and BC values are known for a particular weapon / target device combination and downloaded into the image processor 104, the operation of the device 100 is not complicated.

  In operation, the user of device 100 simply aimed the weapon at the target, tilted the weapon more than 10 degrees counterclockwise to visually zoom in on the target, and then was sized appropriately within the display. Occasionally, the weapon is returned vertically and tilted slightly to the left or right depending on the perceived crosswind and fired. Range is automatically corrected via a microprocessor that shifts the displayed image up or down. The line of sight remains centered and range correction is automatically provided and displayed. Crosswind drift correction is performed automatically by the shooter tilting the weapon to its own estimate of the desired target offset provided by the crosswind correction symbol 203 in the image display shown in FIG. The target image is automatically shifted to the right or left in the display so that the line of sight remains centered, and the shooter is aiming at the displayed image with the line of sight centered. Then, test firing while correcting the crosswind while maintaining the desired slope.

  Referring now to FIGS. 3-4, a second embodiment of the aiming device 300 is illustrated. In the illustrated embodiment, the apparatus 300 includes an elongated hollow tubular housing 301 having a front end and a rear end. The housing can be made of anodized aluminum or the like. The front lens 302 and the image sensor 303 are assembled together in the form of a sealed unit, proximal to the front end of the housing 301. The front lens 302 is assembled to focus light from the target onto the image sensor 303. Front lens 302 and sensor 303 form part of a sealed compatible camera module 319. The image sensor 303 is assembled on a circuit board, and preferably includes a sensor, an image processor, and a nonvolatile memory.

  Microprocessor 304, pressure and temperature sensors (not shown), tilt sensor 305, and battery 306 are assembled to circuit board 326 in control / display module 308. Image sensor 303, temperature, pressure and tilt sensor 305 are in electrical communication with microprocessor 304, as described below.

  Control / display module 308 and image display component 309 are removably assembled proximal to the rear end of housing 301. Image display component 309 is in electrical communication with microprocessor 304. The housing 301 further includes an integrated assembly system 311 for the purpose of assembling the aiming device 300 to a weapon (eg, a rifle).

  The aiming device 300 may include some or all of the features of the first embodiment of the aiming device 100, including features such as, for example, field of view adjustment, bullet fall (range) correction, and / or crosswind drift correction. In addition, the aiming device 300 preferably includes a compatible camera module 319 configured with a front lens 302 and an image sensor 303 within the lens barrel 320. The image sensor 303 is assembled perpendicular to the lens axis on the circuit board fastened to the rear end of the lens barrel 320, and is preferably sealed thereto. The image sensor circuit board includes a coaxially extending rear female connector 324 for receiving a blade pin connector extending from the front end of the control / display module 308 described below.

  The camera module 319 is secured to the housing 301 via an externally threaded collar 318 that guides and seats the lens barrel 320 with the lens barrel 320 positioned accurately within the housing 301 via a positioning surface 321 (shown in FIG. 9). Is done. This interchangeable camera module feature allows one target device or device 300 to be used in a variety of different situations, such as long range or short range situations, without having to re-sight within different camera modules 319. Is possible. This can be very advantageous for the user.

  Referring now to FIGS. 5-8, one embodiment of a removable control / display module 308 is illustrated. The control / display module 308 is removably assembled to the rear end of the elongated tubular housing 301 by a collar 307. Removing the control / display module 308 from the tubular housing 301 facilitates battery replacement and / or configuration of device settings, as described below. The collar 307 may utilize a bayonet-type, screw-type, or any other suitable assembly system that can maintain a mechanical connection between the control / display module 308 and the tubular housing 301 during weapon firing. .

  The front opening of the collar 307 fits over the entire outer surface of the rear end of the tubular housing 301. The outer surface of the rear end of the tubular housing 301 in this exemplary embodiment includes an annular groove. The inner surface of the collar 307 includes an annular rib configured to fit within the groove so that the collar 307 is rotatably assembled to the tubular housing 301. The inner surface of the rear opening of the collar 307 is threaded. The outer surface of the front end of the control / display module 308 is also threaded in a similar manner so that the control / display module 308 can be threaded onto the tubular housing 301 via rotation of the collar 307. It is like that. Thus, the collar 307 allows the control / display module 308 to be connected to and disconnected from the tubular housing 301 without rotating the control / display module 308 in relation to the tubular housing 301. This in turn allows the use of a plug or bayonet type electrical connection between the control / display module 308 and the camera module 319.

  The control / display module 308 includes an eyepiece assembly 310. The eyepiece assembly 310 facilitates viewing of the image display component 309. In one embodiment, the distance from the eyepiece in the eyepiece assembly 310 to the image display component 309 may be manually adjustable to facilitate diopter adjustment. For example, the eyepiece assembly 310 is threaded into the control / display module 308 such that clockwise rotation of the eyepiece assembly 310 reduces the distance from the eyepiece to the image display component 309 and vice versa. The

  As well shown in FIG. 8, the control / display module includes a control portion 313 that houses a circuit board 326, to which the battery 306, tilt sensor, pressure sensor, and temperature sensor are attached and controlled. The portion connects to a microprocessor 304 that connects to a display element 309 in the display portion 315 of the control / display module 308. The front end of the circuit board 326 includes a male blade connector 322 that is coupled to the female connector 324 so that the circuit board 326 is installed when the control / display module 308 is installed inside the housing 301 as described above. The microprocessor 304 and the image sensor 303 assembled on the top are firmly connected.

  Separating the control / display module 308 from the tubular housing 301 allows the user to enter information to be stored in the electronic memory of the microprocessor 304. Such information may include ballistic data such as ambient temperature, pressure, muzzle velocity, drag and / or ballistic coefficient associated with one or more bullet types. In the exemplary embodiment 300, removing the control / display module 308 from the tubular housing 301 exposes the computer connection port 312 that is in electronic connection with the processor 304 via the circuit board 326. In one embodiment, the computer connection port 312 is a USB port. The control / display module 308 may thus be connected to a computer having appropriate application software that can communicate with the processor 304 via the computer connection port 312. At this time, as described above, the ballistic data for one or more bullet cartridge types is input and stored in the aiming device 300 for use in connection with the on-site bullet trajectory calculation by the processor 304 to facilitate aiming of the weapon. May be.

  Referring now to FIG. 9, one embodiment of a compatible lens module 319 is shown. In the illustrated embodiment, the lens module includes a lens barrel 320 having a positioning surface 321. The positioning surface 321 facilitates proper alignment of the compatible lens module 319 within the housing 301. As described above, the image sensor 303 preferably includes a non-volatile memory. The nonvolatile memory stores the coordinates (x, y) of the pixels (referred to as “reference pixels” in this specification) inside the pixel array of the image sensor 303 that exists along the line of sight of the camera module 319. If a compatible lens module 319 is installed in the apparatus 300, the microprocessor 304 may be operable to read the coordinates of the reference pixel to establish a reference point on the target image. Thus, each of the compatible lens modules 319 that can be installed in the apparatus 300 is built and sealed. Further, the variable features described herein are not affected by changes in the camera module 319.

  Due to slight manufacturing defects (eg, lens defects), this line of sight of the camera module 319 will not exactly coincide with the longitudinal central axis of the camera module 319. Preferably, the reference pixel is determined as the final step in the manufacturing process of the lens module 319. To determine the reference pixel, a compatible lens module 319 may be connected to a calibration device (not shown) that includes a surface that mates with the positioning surface 321. The calibration device further includes a calibration target positioned such that when the compatible lens module 319 is assembled into the calibration device, the central axis of the lens module 319 is directed toward the calibration target. At this time, an image of the calibration target may be acquired via the sensor 303. At this time, the reference pixels may be located by analyzing the image to determine which pixels of the sensor 303 have captured light originating from the center of the calibration target. At this time, the coordinates of the reference pixel may be stored (for example, “burned”) in the nonvolatile memory of the image sensor 303 via the calibration device.

  Referring now to FIG. 10, four exemplary menu displays provided by the digital target scope control / display module are shown. In one embodiment of the control / display module 308, separating the control / display module 308 from the tubular housing 301 allows the user to make field choices for functions such as the size of the range circle 202, maximum zoom range, and bullet type. Will be able to do.

  These functions are preferably organized in the form of menus. For example, the cartridge menu may display multiple cartridge types. By changing the cartridge type on the menu, the trajectory data, MV and BC values used in the trajectory calculation by the processor 304 are changed correspondingly.

  In one embodiment, the user can step through various menus by changing the tilt angle of the separate control / display module 308. For example, the first menu appears at a tilt angle of 0 degrees, the second menu appears at a tilt angle of 90 degrees, the third menu appears at a tilt angle of 180 degrees, and the fourth menu tilts at 270 degrees Presented in the corner. The user may step through various options within each menu through the use of push buttons 314, 316. Thus, the user can make field changes to functions such as the size of the range circle 202, the maximum zoom range, and the ballistic data associated with one or more bullet cartridge types. In other embodiments, the eye sensor described above may be used to step through the menu. The eye sensor may register certain intentional eye movements and adjust the menu choices accordingly. For example, the eye sensor may register a downward eye movement and direct a signal to the processor to highlight one menu option below the previous menu option. Left or right eye movement may select or deselect an option. For example, an option may be selected or deselected using a deliberate blink that has a longer duration than a predetermined time. Behaviors caused by other eye movements are also expected.

  Switching on the aiming device 100 or 300 is preferably accomplished by removing the front lens cover (not described) from the aiming device. Placing the aiming device in a low power standby state is accomplished by re-installing the front lens cover on the aiming device. Naturally, the removal of the battery invalidates the storage device, but the static information stored in the non-volatile memory is not erased.

  The techniques described herein may be used in an aiming or optical device that displays the position of a projectile along its trajectory curve as the zoom level increases or decreases. One exemplary condition is presented in FIG. As described above, when a bullet flies from a rifle to the intended target, multiple forces affect the flight of the bullet. Gravity causes the bullet's altitude to drop as the bullet flies from the firearm to the target. When the hunter 500 is close to its target 502, the bullet falls very little. This trajectory is close to the optical path 504 at short distances. However, improvements to firearms and ammunition have made it possible for hunters to target prey from long distances. At longer distances, gravity causes the bullet altitude to fall more significantly, as represented by the ballistic path 506 in FIG. Other factors also affect bullet flight. For example, crosswind moves the bullet horizontally along the flight path of the bullet. Compensation in the optical device for the effect of wind on the flight of bullets is often referred to as drift. Humidity, altitude, temperature and other environmental factors will also affect the flight of the bullet.

  In order to properly aim the target from a significant distance, a typical optical device (ie, an optical device that uses multiple lenses along the optical path without an image sensor) is aligned along the optical path of the device. Will be adjusted to increase magnification. That is, increasing the magnification increases the observation size of the target along a straight line between the aiming device and the target. However, to compensate for bullet fall, the user adjusts the position of the target inside the viewfinder by slightly lifting the muzzle and aligning different aiming elements on the target based on the range to the target. There must be. This extra step is often forgotten by novice (and advanced) archers who are rushed or distracted, resulting in inaccurate aiming. This leads to non-fatal shooting if the shooting fails or is bad. In the so-called “ballistic zoom” technique described below, the aiming device displays an area centered on the position of the projectile at any given distance from the shooter, thus forcing the shooter to raise, lower or Adjust in other ways to compensate for bullet fall or crosswind.

  The ballistic zoom technique described herein differs from the prior art in that an increase in magnification (or zoom) occurs along the ballistic trajectory path 506 of the bullet. For any known ballistic information (eg, projectile caliber, muzzle velocity, crosswind velocity, etc.), the location of the projectile is known at any distance from the firearm. The technique described herein zooms along this trajectory path 506 depicted in FIG. Aiming device 508 captures the field of view (FOV) (represented by line 510). However, the aiming device 508 displays only a portion of the field of view 510 to the user. This displayed portion (also called region of interest (ROI)) is a region of the field of view around the location of the projectile. A number of regions of interest 512 are depicted in FIG. For example, zero yard from the aiming device 512a is the area around the projectile at that point in space. The regions of interest are depicted at 200 yards (512b), 400 yards (512b), 600 yards (512c), and 800 yards (512d). The zoom value (described further below) is related to the trajectory curve, thus allowing the aiming device 508 to determine the magnification for a given range, and vice versa. The displayed region of interest 512 may be any region required or desired for a particular application. As the bullet descends along the trajectory path 506, the hunter 500 is required to force the muzzle up to keep the displayed aiming element properly positioned on the target 502.

  12A-12C depict a comparison between the captured field of view and the displayed view for an aiming device using ballistic zoom techniques at various zoom levels. The inversion of the image caused by using the lens inside the aiming device is not drawn. FIG. 12A depicts an image 600 captured by an image sensor such as a camera. Typically, this image 600 is the full FOV of the sensor. The ROI 602 is presented to the shooter as an image 604 displayed on the display unit. In this figure, ROI 602 is the entire captured image 600. One aiming element 606, such as a line of sight, is overlaid on the displayed image 604. Aiming line 606 indicates where the bullet is positioned at a specific distance from the aiming device, where this specific distance is related to the zoom level of the aiming device. In this case, a ranging element 608 in the form of a range circle is also superimposed on the displayed image 604.

  At all zoom levels up to the maximum zoom level including the maximum zoom level, the size of the displayed ranging element 608 is the same size for the FOV 600 and is calibrated to a known target size. Thus, when using a calibrated ranging element for a 6 foot target, once the target has “fit” within the ranging element (by increasing magnification), the aiming device, as described above, The range to the target can be calculated based on the law. Unlike prior art devices that increase magnification along the optical path, ballistic zoom technology increases magnification along the ballistic path. Thus, since the ballistic path falls as the distance away from the firearm increases, the displayed image 604 is derived from the ROI 602 to the lower portion of the FOV 600 as the zoom level increases. For example, FIG. 12B depicts the relationship at 4 × zoom level. Here, the captured image or FOV 600 is not different from the case of FIG. 12A. The ROI 602 is smaller than the entire FOV 600 and is located proximal to the bottom region of the FOV 600. The ROI 602 is displayed as a displayed image 604. The size and position of the aiming element 606 and the ranging element 608 remain unchanged on the display. FIG. 12C depicts the relationship at 8x zoom level. Again, the captured image or FOV 600 is the same as in FIG. 12A. The ROI 602 is smaller than the total FOV 600 and is arranged at the bottom of the FOV 600. The sensor resolution may be scaled to the display resolution by pixel binning or other techniques known in the art. As the zoom magnification increases, a smaller ROI 602 is displayed. Furthermore, since the magnification follows the ballistic path, the ROI 602 is always centered at the bullet position for that particular zoom level and associated range. This ensures accurate shooting remotely.

  FIG. 13A depicts regions of interest for various magnifications of a conventional optical zoom system. In a conventional zoom system, the magnification is centered on the FOV, and the ROI corresponds to the portion located at the center of the FOV. Thus, as the distance increases, the user must align different aiming elements with the target to ensure accurate shooting. In addition, given the crosswind being drawn, the user must further utilize a drift aiming element to compensate for the crosswind. In this case, the user must aim the firearm to the left to compensate for the crosswind that flows to the right.

  In contrast, FIG. 13B depicts regions of interest for various magnifications of the ballistic zoom system. Here, the center of the ROI follows the trajectory curve of the bullet so that the position of the bullet is centered within the ROI at all zoom levels. As the zoom level increases, the center of the ROI moves down according to the calculated bullet drop and moves horizontally according to the calculated bullet drift due to crosswind. Thus, the user is required to center the only aiming point available on the target in order to easily obtain accurate shooting.

  FIG. 14 depicts the relationship between the field of view and a fixed size ranging element. Aiming device 700 having an FOV (defined by outermost line 702) is depicted. Inner line 704 depicts the extent of the ranging element in relation to FOV 702. The FOV angle α is known at any zoom level. As a result, the ranging element 704 is inherent in the known ranging element angle β at any zoom level. The user may select from ranging elements sized to a particular target 706 size. For example, the user selects a circle corresponding to a specific size target at a known distance (eg, a 6 foot target for an elk or other prey, or a 3 foot target for a boar or smaller prey). It's okay. Since there is only one range R in which the ranging element 704 accurately surrounds the target 706, the aiming device 700 can determine the range R based on the zoom level. The aiming device performs a calculation to determine the range R to the target 706. This range is used to calculate the trajectory and position the ROI. Range R may be displayed along with zoom level, crosswind speed, or other information.

  15-18 illustrate a method for aiming a target according to embodiments. FIG. 15 depicts a first method 800 for aiming a target with an aiming device or optical device. Method 800 begins at operation 802 with receiving initial conditions for an optical device. The initial conditions may include a ranging element size and a range associated with the ranging element. For example, the ranging element may be based on a 6 foot target, for example, and may be selected by the user depending on the expected target size. The processor of the aiming device associates the known ranging element with the known range so that the range of the target that fits within the ranging element is known. Ballistic information, such as muzzle exit speed, projectile weight or type, crosswind speed and direction, barometric pressure, slope, tilt, ambient temperature, and other information is received at operation 804. Typically, much of this information is programmed into the storage element of the aiming device prior to use, but the crosswind speed is generally set during use. An image, typically an FOV, is received by the image sensor at operation 806. At least a portion of this image, i.e., ROI, is displayed on the display to the user at operation 810. Thereafter, a first zoom input may be received at operation 812, and a first zoom level is set. This zoom level corresponds to a known distance from the aiming device. Zoom input may be based on actions taken by the user, such as button or knob activation, firearm tilt, and the like. As the aiming device increases the zoom level, the projectile position (or zoom level) at this known distance is determined at operation 814 along with the associated ballistic information. Based on the zoom value and projectile position, the ROI around the projectile position may be displayed as at operation 816. Although the displayed aiming line may be used for aiming, the aiming device may display symbols such as aiming elements at the intersection of the aiming line to further enhance the projectile position.

  FIG. 16 depicts a method 850 for aiming a target once the maximum zoom level of the image sensor has been reached. Such a condition may occur if the target is too far from the user of the aiming device and the aiming device reaches its maximum zoom level after performing the method 800 depicted in FIG. 15, for example. Method 850 begins at operation 852 by receiving a maximum zoom input that sets a maximum zoom level. The maximum zoom level may be defined by the ROI of the image sensor and the displayed image once the resolution of the ROI of the image sensor matches the resolution of the displayed image, for example. The maximum enlarged image is displayed at operation 854. Thereafter, a second zoom input sets a second zoom value in operation 856. Unlike the method 800 described above, further zoom input after the maximum zoom value is reached reduces the displayed size of the ranging element. Based on the zoom input or zoom level, the size of the ranging element is calculated in operation 858. This adjusted ranging element is then overlaid on the maximum magnified image at operation 860. As the aiming device zoom input increases, the projectile position (or zoom level) at this known distance is determined in operation 862 along with the associated ballistic information. Based on the zoom value and the projectile position, a region of interest generally around the projectile position may be displayed as at operation 864. As in method 800 of FIG. 15, the aiming device may display symbols such as aiming elements to further emphasize the projectile position.

  FIG. 17 illustrates a method 900 for aiming a target. Method 500 includes receiving ballistic information, all or a portion of which may be stored in memory. In operation 904, an image is received from the image sensor. In operation 906, the zoom value is received, and in operation 908, the trajectory of the projectile is calculated. Similar to the method described above, an ROI based on the zoom value is displayed at operation 910. Generally, the ROI corresponds at least in part to the projectile position. Although the displayed aiming line may be used for aiming, the aiming device may display symbols such as aiming elements at the crossing of the aiming line to further emphasize the projectile position. In operation 912, the range to the target may be determined by overlaying a ranging element on a portion of the displayed image. Other methods for determining range may also be utilized. In operation 914, the updated ROI may be displayed in operation 916 once a zoom input is received, for example, by activation of a button by the user, tilting of the aiming device, or the like.

  Another method 1000 for aiming at a target is depicted in FIG. Here, an image received by an image sensor such as a camera is received in operation 1002. A field of view that is a portion of the received image is displayed in operation 1004. A ranging element having a fixed size in relation to the displayed field of view is displayed or overlaid on the field of view in operation 1006. In operation 1008, a target size input is received. This target size input may be a default target size input (eg, for a 6 foot high target) or the input may be received from a storage device. In other embodiments, the target size input is selected from a plurality of predefined target sizes. A zoom input to set the zoom value is received at operation 1010, and then at operation 1012, the range to the target is calculated.

  The ballistic zoom technique described herein may be utilized for an aiming device that utilizes an image sensor, such as a camera. In certain embodiments, one may choose to use ballistic zoom as one option instead of the conventional or default zoom described above (ie, a zoom system that increases the zoom level or magnification along the optical path). Also good. In this way, the shooter can change the zoom system (ballistic system or conventional system) as desired for a particular scenario, user preferences, and the like. In still other embodiments, an optical device setting may be selected in which the line of sight depicted in FIGS. 12A-12C, for example, is not associated with a projectile position. In such embodiments, the display may present one or more aiming elements that are separate from the line of sight associated with the projectile position at a predetermined distance. In such embodiments, the ROI may be centered on the aiming element.

  Referring now to FIGS. 19 and 20, the aiming device 300 may be aimed for each of up to four types of cartridge / bullet combinations to be used in a weapon. As in the first embodiment described above, in order to initially align the target device 300 on a weapon such as a rifle, the device is first assembled on the weapon and is “sighted” at a known distance. Must be defined. The work sequence is outlined in FIG. This procedure is used to compensate the device for mechanical alignment variations relative to the barrel of the weapon. The first vertical adjustment is called correction for mechanical “bullet drop” at the reference distance. Typically for rifles this is done with a target distance of 100 yards. The second adjustment to compensate for horizontal variations during assembly is called mechanical “drift”. For device 300, these adjustments are made in software that resides on an external device such as a laptop computer, iPad®, smart phone or PC, and the software is then removed from housing 301. It is downloaded to the microprocessor 304 in the device 300 via the USB port 312 on the control / display module 308.

  Initially, a default value assuming perfect barrel alignment, an expected muzzle velocity (MV) value, and an expected ballistic coefficient (BC) are shown in FIG. Loaded as default. The weapon is then brought to the target range, where the target is placed at a known distance, such as 100 yards, and the device 300 is aimed at the target in operation 1102. This is preferably done in the absence of any crosswinds that affect the correction being performed. Thereafter, in a work step 1103, the first test shooting is performed with the device 300 held vertically (no tilt) and basically aimed horizontally such that the line of sight is centered on the target image. Fired. In operation 1104, the deviation between the target center and the bullet impact is measured and recorded. In operation 1105, a second test shot is performed, and in operation 1106, the deviation between the target center and the bullet impact is recorded. These test shots are repeated several times in operation 1107. In operation 1108, all of these recorded deviation values are entered into the software to generate mechanical “altitude” and “drift” correction values for the device 300 on the weapon. Finally, in operation 1109, the “altitude” and “drift” correction values determined by the software for the device are downloaded to the scope device 300 via its USB port.

  Additional test firing at various distances is required to provide proper muzzle velocity (MV) and ballistic coefficient (BC) data that is precisely adjusted for the weapon. These operations will be described with reference to FIG. These steps are the same as in FIG. 19 up to step 1208. In operation 1209, the preceding step is repeated for a plurality of different distances. Next, at operation 1210, deviations are entered into the software to produce the best fit of the data and to generate accurate muzzle velocity and ballistic coefficient data for the particular cartridge being fired within the weapon. These values are then downloaded into the device 300 at operation 1211.

  This process as described with reference to FIG. 20 must be repeated for up to four different cartridge loading / bullet combinations since the MV and BC values will be different for each combination. Once this process is complete, the device 300 has already “learned” the precise muzzle velocity and ballistic coefficients required for the correct operation of the target device 300. In order to perform accurate crosswind drift correction calculations, it is necessary to obtain range, slope, MV, BC and air density values. The range is set manually via tilting the device 300 and the weapon, eg, more than 10 degrees, until the target image properly fills the image circle in the display. The gun is then returned to less than 10 degrees, perhaps vertical if there is no crosswind at the time of firing. If there is a crosswind, the shooter simply tilts appropriately and aims again according to the aiming line 201 and the crosswind correction symbol 203 in the displayed image. Both temperature and ambient pressure are critical for accurate determination of air density.

  It is important to note that when the control / display module 308 is installed inside the housing 301, the temperature and pressure values will no longer accurately reflect the environmental conditions. Therefore, the control / display module should not be installed until it reaches the shooting site, or at least temporarily removed when it reaches the shooting site, so that the proper temperature and pressure can be reflected. Upon arrival at the shooting site, the user removes and resets the battery 36 to reset the control / display module 308, so that the pressure and pressure before the control / display module 308 is reinstalled inside the housing 301. Temperature values can be measured and stored. When the control / display module is fully installed, both sensor 303 and the sensor's microprocessor and microprocessor 304 detect that camera module 319 is connected by contact 322, and therefore the lens cover is removed. We know that videos should be presented when removed.

  While working, the user of either device 100 or 300 simply aims the weapon at the target and tilts the weapon counterclockwise by more than 10 degrees to visually zoom in on the target, then in the display When sizing, the weapon is brought back to vertical and the weapon is tilted slightly to the left or right depending on the perceived crosswind. Range is automatically corrected through a microprocessor that shifts the displayed image up or down appropriately for bullet fall. The line of sight remains centered and range correction is automatically provided. Crosswind drift correction is performed automatically by the shooter tilting the device at an angle of less than 10 degrees corresponding to the estimated crosswind and aiming directly at the target in the line of sight. This tilt shifts the display image to the right or left so that the correct aim remains with the aiming line centered. Crosswind drift correction is indicated by an indicator 203 in the image display shown in FIG.

  Thus, the unique design and concept of the digital aiming device is shown and described. While this specification is directed to particular embodiments, it should be understood that those skilled in the art will envision changes and / or modifications to the specific embodiments shown and described herein. . All such modifications or variations are intended to be included herein. It should be understood that the description herein is intended to be illustrative only and is not intended to be limiting. Rather, the scope of the invention described herein is limited only by the claims appended hereto.

  While the specification describes what is considered to be exemplary and preferred embodiments of the technology, other modifications of the technology will become apparent to those skilled in the art from the teachings herein. Let's go. The detailed operation and manufacturing methods and configurations disclosed herein are exemplary in nature and should not be considered limiting. Accordingly, it is desired that all modifications that come within the spirit and scope of the technology are guaranteed within the scope of the appended claims. Accordingly, what is desired by a patent is the technology as defined and identified within the following claims, and all equivalents.

Claims (19)

In a method of aiming at a target,
Receiving an initial condition of the optical device, the initial condition comprising a ranging element size and a range associated with the ranging element size;
-Receiving ballistic information;
-Receiving an image from the image sensor;
-Displaying at least a portion of the image on a display;
Superimposing the ranging element on the displayed part of the image;
-Receiving a first zoom input to set a first zoom value, wherein the first zoom value corresponds to a first distance from the optical device;
-Determining a first projectile position based on the first distance and the ballistic information;
Including methods.   The method of claim 1, further comprising displaying a first region of interest based at least in part on the first projectile position and the first zoom value.   The method of claim 2, further comprising displaying a first symbol corresponding to the first projectile position. Receiving a maximum zoom input to set a maximum zoom value, wherein the maximum zoom value is defined by an image of interest sensor area and an area of interest display;
Displaying a maximum magnified image associated with the maximum zoom value;
-Receiving a second zoom input to set a second zoom value, wherein the second zoom value corresponds to a second distance from the optical device;
-Calculating the size of the adjusted ranging element;
-Overlaying the adjusted ranging element on the displayed maximum magnified image;
-Determining a second projectile position based on the second distance and the ballistic information;
-Displaying a second region of interest based at least in part on the second projectile position and the second zoom value;
The method of claim 1, further comprising:   The method of claim 4, further comprising displaying a second symbol corresponding to the second projectile position.   The method of claim 3, wherein the first symbol comprises at least one of an impact point at a target and a guide symbol.   The method of claim 1, wherein the first projectile position determination operation is based at least in part on crosswind input.   2. The first projectile position determination operation is based at least in part on projectile information input, ambient temperature input, gradient input, tilt input, muzzle outlet velocity input, and air pressure input. Method.   The method of claim 1, wherein the image sensor comprises a camera. In a method of aiming at a target,
-Receiving ballistic information;
-Receiving an image from the image sensor;
-Receiving a zoom value;
-Calculating a projectile trajectory based at least in part on the ballistic information;
-Displaying the region of interest based on the zoom value, the region of interest at least partially corresponding to the projectile trajectory;
Including methods.   The method of claim 10, further comprising determining a range to the target. The decision work
-Displaying at least a portion of the image on a display;
-Overlaying a ranging element on a portion of the image;
12. The method of claim 11 comprising: -Receiving a zoom input, the zoom input including an updated zoom value;
-Displaying an updated region of interest based on the updated zoom value;
The method of claim 10, further comprising: In a method of aiming at a target,
-Receiving an image from the image sensor;
-Displaying at least a portion of the received image, comprising the field of view in which the displayed portion is displayed;
-Displaying a ranging element with a fixed size in relation to said displayed field of view;
-Receiving a target size input;
-Receiving a zoom input to set a zoom value;
-Calculating a range to the target based at least in part on the target size input and the zoom value;
Including methods.   The method of claim 14, wherein the target size input comprises a default target size input.   The method of claim 14, wherein receiving the target size input comprises receiving the target size input from a storage device.   The method of claim 14, wherein the target size input is selected from a plurality of predefined target sizes. A device for aiming at a target,
-With a housing;
-A display;
-With an image sensor;
A controller configured to selectively operate the device in a default zoom mode and a ballistic zoom mode;
In an apparatus including:
When in the default zoom mode, an increase in zoom level changes the field of view along the optical path from the device to the target;
-When in the ballistic zoom mode, increasing the zoom level changes the field of view along the ballistic path from the device;
apparatus.   19. The apparatus according to claim 18, wherein in the default zoom mode, a projectile impact point is displayed on a display unit, and a position of a symbol on the display unit is changed based on a zoom level.

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