High-magnification continuous zoom optics with inter-magnification line-of-sight and system line-of-sight alignment

Abstract

The present invention discloses a high-magnification continuous zoom optical device capable of line of sight alignment between magnifications and system line of sight alignment. The present invention comprises an optical device having a prism-based optical axis bending structure, a ball screw and LM guide-based high-precision zoom focus driving structure, and a temperature compensation function. Accordingly, by enabling line of sight alignment between magnifications centered on the entrance pupil of the optical system as well as line of sight alignment with observation modules within the observation system, the invention minimizes the phenomenon of the image center shifting during magnification conversion and structures the device to be easily manufactured, thereby ensuring line of sight stability during magnification conversion. Furthermore, by moving the prism, the optical device can be manufactured so that the reference plane of the optical device and the center of the line of sight coincide, thereby preventing image distortion. Additionally, precision performance is ensured by enabling additional alignment with other modules through azimuth rotation and elevation tilt assembly.

Description

Technology Field

[0001] The present invention relates to an optical device applied to an observation system (e.g., defense, aviation, marine surveillance systems, high-precision EO tracking devices, industrial inspection equipment, etc.), and more specifically, to a high-magnification continuous zoom optical device capable of line of sight alignment between magnifications and line of sight alignment between magnifications and line of sight alignment of the observation system, configured to have a prism-based optical axis bending structure, a ball screw and LM guide-based high-precision zoom focus driving structure, and a temperature compensation function. Background Technology

[0003] Generally, optical devices such as cameras are configured with multiple lenses in the forward and backward directions to adjust the magnification of a subject; among these multiple lenses, a movable lens capable of moving in the forward and backward directions is included to enable magnification conversion and focus correction.

[0004] However, the magnification conversion and focus correction structures of the aforementioned optical device are fixed by the initial assembly, and it is difficult to mechanically correct both the line of sight within the optical device and the line of sight between the observation module within the optical measurement system; while it is common to compensate using software, this results in some degradation of optical performance and physical data.

[0005] In other words, conventional optical devices often struggle to implement continuous zoom in special environments, so they use single-magnification combinations or implement continuous zoom at low magnifications. However, when implementing continuous zoom, the line of sight shakes during magnification conversion or there is a significant difference in the line of sight between magnifications, causing problems during observation and aiming. Furthermore, the objective lens center cannot be moved, there is no line of sight correction function between magnifications, and the sensor is adversely affected by temperature changes, resulting in noise or rapid degradation of image quality. Additionally, there are problems with low space utilization because an optical axis bending structure is not applied. Prior art literature

[0007] Registered Patent Publication No. 10-1040309 (Published June 10, 2011) Registered Patent Publication No. 10-2816469 (Published June 9, 2025) The problem to be solved

[0008] The problem that the present invention aims to solve is to provide a high-magnification continuous zoom optical device capable of line of sight alignment between magnifications and system line of sight alignment by configuring an optical device having a prism-based optical axis bending structure, a ball screw and LM guide-based high-precision zoom focus driving structure and / or a temperature compensation function, thereby enabling line of sight alignment between magnification changes as well as line of sight alignment with an observation module within an observation system centered on the entrance pupil of the optical system, so as to minimize the phenomenon of the center of the image shifting during magnification changes and structure it to be easy to manufacture, thereby ensuring line of sight stability during magnification changes, enabling the optical device to be manufactured without image distortion by aligning the center of sight with the reference plane of the optical device through prism movement, and enabling additional alignment with the observation module through azimuth rotation and elevation tilt assembly, so as to ensure precision performance. means of solving the problem

[0010] A high-magnification continuous zoom optical device capable of aligning the line of sight between magnifications and the system line of sight, which is a means for solving the problem of the present invention, comprises: an objective lens unit configured in the main body and capable of aligning and moving in the X-axis and Y-axis directions to reduce the difference in line of sight between magnifications while focusing on the subject; a magnification conversion unit that is parallel to the lens center axis of the objective lens unit and moves linearly in the Z-axis direction to convert the magnification according to the shooting of the subject focused by the objective lens unit; a focus adjustment unit that is arranged parallel to the magnification conversion unit and moves linearly in the Z-axis direction to continuously adjust the focus according to the magnification conversion of the magnification conversion unit; and a prism unit capable of rotational movement in the X-axis and Y-axis directions to move the line of sight to the center of the subject image screen according to the magnification conversion of the array conversion unit and the focus adjustment of the focus adjustment unit. It includes: an aperture that controls the amount of light to control the brightness when photographing a subject by the objective lens unit, the magnification conversion unit, the focus adjustment unit, and the prism unit; and a control unit that controls power supply and linear movement of the magnification conversion unit and the focus adjustment unit.

[0011] Additionally, the main body comprises: a first main body to which the prism unit is coupled while the focus adjustment unit and the control unit are accommodated in the upper part; and a second main body coupled to the first main body to which the objective lens unit is coupled while the magnification conversion unit is accommodated, wherein the focus adjustment unit accommodated in the upper part of the first main body is configured to be covered by a first cover, and the control unit accommodated in the upper part of the first main body is configured to be covered by a second cover.

[0012] In addition, the objective lens unit includes a first lens barrel in which an objective lens is received, and the first lens barrel is configured to be aligned and moved in the X-axis and Y-axis directions according to the tightening force of a plurality of adjustment screws to equalize the difference in line of sight between the narrow field of view and the wide field of view by decentering movement to zero.

[0013] In addition, a first fastening member for fastening the adjustment screw is formed in the first tube, and a second fastening member is formed in the main body, which is larger in diameter than the first fastening member and guides the adjustment screw to move in alignment in the X-axis or Y-axis direction.

[0014] Additionally, the magnification conversion unit comprises: a second barrel having a first spiral coupling part and a first LM coupling part formed at both ends for receiving a magnification conversion lens; a first ball screw having both ends rotatably fixed to one side of the lower part of the main body through a first bearing and a first gear part, coupled to the first spiral coupling part to move the second barrel linearly in the Z-axis direction; a first LM guide having both ends fixed to the other side of the lower part of the main body, coupled to the first LM coupling part to guide the linear movement of the second barrel in the Z-axis direction; and a first motor having a drive shaft connected through the first gear part and the second gear part of the first ball screw to drive the first ball screw to rotate.

[0015] In addition, the first gear section and the second gear section of the first ball screw are connected and configured with scissors gears to achieve zero backlash when transmitting the driving force of the first motor and to increase positional accuracy according to the ratio conversion.

[0016] Additionally, the focus adjustment unit comprises: a third barrel having a second spiral coupling part and a second LM coupling part formed at both ends for receiving a focus adjustment lens; a second ball screw having both ends rotatably fixed to one side of the upper part of the main body and coupled to the spiral coupling part to move the third barrel linearly in the Z-axis direction; a second LM guide having both ends fixed to the other side of the upper part of the main body and coupled to the second LM coupling part to guide the linear movement of the third barrel in the Z-axis direction; and a second motor having one end of the second ball screw connected to drive the second ball screw to rotate it.

[0017] In addition, a linear guide that stabilizes the linear movement of the third barrel in the Z-axis direction is fixed at both ends of the upper side of the main body, and a guide coupling part that is movably coupled to the linear guide is formed on the third barrel.

[0018] In addition, the linear movement speed in the Z-axis direction according to the array conversion of the array conversion unit is set to a lower speed than the linear movement in the Z-axis direction in which focus adjustment by the focus adjustment unit is continuously performed, by the gear ratio of the first and second gear parts and the scissors gear.

[0019] In addition, optical switches are formed at both ends of the main body so that the magnification conversion unit and the focus adjustment unit are initialized to '0 point'.

[0020] Additionally, the prism unit comprises: a first prism that compensates for an X-axis tilt angle by rotating in the X-axis direction to move the gaze to the center of the subject image screen; a second prism that compensates for a Y-axis tilt angle by rotating in the Y-axis direction to move the gaze to the center of the subject image screen; and a connecting lens that connects the first prism and the second prism.

[0021] In addition, a cover for blocking light is formed on the second prism.

[0022] In addition, the first prism is configured to rotate in the X-axis direction through a wedge having a predetermined thickness.

[0023] In addition, the prism unit further includes a position pin that establishes a center position capable of rotating and shifting the entire line of sight of the optical device while minimizing line of sight distortion.

[0024] In addition, a temperature control unit with a cooling or heating function is formed on the upper part of the main body to ensure image quality of the subject under harsh temperature conditions.

[0025] In addition, the temperature control unit comprises: a temperature sensor; a heat dissipation pad in contact with the temperature sensor; a thermoelectric element in contact with the heat dissipation pad and having a cooling or heating function; and a heat sink in contact with the thermoelectric element.

[0026] In addition, the temperature control unit further includes a cooling fan positioned on top of the heat sink.

[0027] In addition, the temperature control unit further includes an insulating material on which the heat sink is placed. Effects of the invention

[0029] Thus, the present invention comprises an optical device having a prism-based optical axis bending structure, a ball screw and LM guide-based high-precision zoom focus driving structure, and / or a temperature compensation function. Through this, line of sight alignment between arrays is made possible, as well as line of sight alignment with an observation module within an observation system centered on the entrance pupil of the optical system. This minimizes the phenomenon of the center of the image shifting during magnification conversion and allows for easy manufacturing, thereby ensuring line of sight stability during magnification conversion. Furthermore, by moving the prism, the center of the line of sight aligns with the reference plane of the optical device, enabling the manufacturing of an optical device without image distortion. Additionally, by enabling additional alignment with the observation module through azimuth rotation and elevation tilt assembly, precision performance is ensured, and the following effects can be expected.

[0030] First, by utilizing it as an observation system that first observes from a wide perspective and then switches to a high-magnification narrow perspective in special situations for detailed observation or aiming, it is possible to expect the effect of preventing image quality degradation when line of sight drift occurs, as well as improving the disadvantages that make it difficult for the user to miss the target or respond quickly.

[0031] Second, by utilizing the objective lens to precisely implement line-of-sight alignment during magnification changes, users can expect the effect of continuously and accurately observing targets while maintaining the linearity of image changes.

[0032] Third, when used in integration with the observation module within the observation system, it is expected to have the effect of guaranteeing the precision of the observation system.

[0033] Fourth, by configuring a robust and precise zoom / focus drive system through the combination of ball screws and LM guides, it is possible to expect the effect of significantly expanding the range of operating conditions by providing structural stability when used in special environments and responding insensitively to temperature changes.

[0034] Fifth, by applying an optical system with a bent structure that incorporates a prism-linked optical system, the space utilization rate is increased compared to optical devices that are long from front to back. Additionally, by utilizing the prism as an additional line-of-sight aligner, the range of alignment movement during manufacturing can be expanded, and the effect of making it easier to implement can be expected.

[0035] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description in the claims. Brief explanation of the drawing

[0037] FIG. 1 is a combined perspective view showing the structure of a high-magnification continuous zoom optical device as an embodiment of the present invention. FIG. 2 is a partially cutaway perspective view showing the structure of a high-magnification continuous zoom optical device with a separated cover as an embodiment of the present invention. FIG. 3 is a schematic plan view showing the structure of a high-magnification continuous zoom optical device as an embodiment of the present invention. FIG. 4 is a cross-sectional view along line AA of FIG. 3 as an embodiment of the present invention. FIG. 5 is a cross-sectional view along line BB of FIG. 3 as an embodiment of the present invention. FIGS. 6 and FIGS. 7 are partially unfolded perspective views of an enlarged scale conversion unit as an embodiment of the present invention. FIG. 8 is a control flowchart for aligning the line of sight between magnifications and the system line of sight of a high-magnification continuous zoom optical device as an embodiment of the present invention. Specific details for implementing the invention

[0038] The detailed description of the invention refers to the accompanying drawings, which illustrate specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that various embodiments of the invention are different but need not be mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in relation to one embodiment. It should also be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. Accordingly, the following detailed description is not intended to be limiting, and the scope of the invention is limited only by the appended claims, including all equivalents to those claimed therein, provided appropriately described. Similar reference numerals in the drawings refer to the same or similar functions across various aspects.

[0039] Hereinafter, embodiments of the present invention will be described with reference to the attached drawings.

[0040] FIG. 1 is an assembled perspective view showing the structure of a high-magnification continuous zoom optical device as an embodiment of the present invention, FIG. 2 is a partially cutaway perspective view showing the structure of a high-magnification continuous zoom optical device with the cover separated as an embodiment of the present invention, FIG. 3 is a schematic plan view showing the structure of a high-magnification continuous zoom optical device as an embodiment of the present invention, FIG. 4 is a cross-sectional view along line AA of FIG. 3 as an embodiment of the present invention, FIG. 5 is a cross-sectional view along line BB of FIG. 3 as an embodiment of the present invention, and FIG. 6 and FIG. 7 are partially unfolded perspective views showing an enlarged magnification conversion unit as an embodiment of the present invention.

[0041] Referring to the attached FIGS. 1 to 7, a high-magnification continuous zoom optical device capable of aligning the line of sight between magnifications and the system line of sight according to an embodiment of the present invention may have an objective lens unit (10), a magnification conversion unit (20), a focus adjustment unit (30), a prism unit (40), an aperture (50), a control unit (60), and / or a temperature control unit (70) configured in the main body (1).

[0042] Here, the main body (1) includes a first main body (1a) to which the prism unit (40) is coupled while the focus adjustment unit (30) and the control unit (60) are accommodated on the upper part, and a second main body (1b) to which the objective lens unit (10) is coupled while the magnification conversion unit (20) is accommodated while the second main body (1a) is coupled, wherein the focus adjustment unit (30) accommodated on the upper part of the first main body (1a) is configured to be covered by a first cover (1c), and the control unit (60) accommodated on the upper part of the first main body (1a) is configured to be covered by a second cover (1d).

[0043] The above objective lens unit (10) is capable of alignment and movement in the X-axis direction (e.g., left-right direction) and the Y-axis direction (e.g., up-down direction), and can be configured to reduce the difference in line of sight between magnifications while focusing on the subject.

[0044] Here, the objective lens unit (10) includes a first lens barrel (12) in which an objective lens (11) is received, and the first lens barrel (12) is capable of alignment movement in the X-axis and Y-axis directions by the fastening force of a plurality of unillustrated adjustment screws to adjust the difference in line of sight between the narrower and wider fields caused by decentering movement to zero when assembled to the main body (1), taking into account that the change in line of sight of the narrower field of sight caused by decentering movement acts significantly more than the change in line of sight of the wide field of sight.

[0045] That is, the first barrel (12) has a fastening member (12a) for fastening an adjustment screw not shown, and the second body (1b) has a fastening member (not shown) that is larger than the diameter of the fastening member (12a) and guides the adjustment screw to move in alignment in the X-axis or Y-axis direction, so that when the adjustment screw is not tightened, the first barrel (12) can move in alignment in the X-axis direction and / or the Y-axis direction.

[0046] The above magnification conversion unit (20) is coupled to the objective lens unit (10) in parallel with the lens center axis and moves linearly in the Z-axis direction (e.g., front-back direction) to convert the magnification according to the shooting of a subject focused by the objective lens unit (10), and may include a magnification conversion lens (21), a second barrel (22), a first ball screw (23), a first LM guide (24), a first motor (25), and a scissors gear (26).

[0047] The second barrel (22) accommodates the magnification conversion lens (21), and a first spiral coupling part (22a) and a first LM coupling part (22b) may be formed on both ends thereof.

[0048] The first ball screw (23) is rotatably fixed at both ends to one side of the lower part of the main body (1) through the first bearing (23a) and the first gear part (23b), and is configured to move the second barrel (22) linearly in the Z-axis direction while being coupled with the first spiral coupling part (22a).

[0049] The first LM guide (24) has both ends fixed to the lower side of the main body (1) and is coupled with the first LM coupling part (22b) to guide the linear movement of the second barrel (22) in the Z-axis direction by the first ball screw (23).

[0050] The first motor (25) is controlled by the control unit (60), and is a stepper motor that drives the first ball screw (23) in forward and reverse rotation by connecting the drive shaft (25b) through the first gear part (23b) and the second gear part (25a) of the first ball screw (23) to rotate the first ball screw (23).

[0051] The scissors gear (26) is configured to connect the first gear portion (23b) of the first ball screw (23) and the second gear portion (25a) of the first motor (25), thereby achieving zero backlash when transmitting the driving force of the first motor (25) and increasing positional accuracy according to the ratio conversion.

[0052] The focus adjustment unit (30) is arranged parallel to the magnification conversion unit (20) and moves linearly in the Z-axis direction to continuously adjust the focus according to the magnification conversion of the magnification conversion unit (20), and includes a focus adjustment lens (31), a third barrel (32), a second ball screw (33), a second LM guide (34), a second motor (35), and a linear guide (36).

[0053] The third barrel (32) above accommodates the focus adjustment lens (31), and a second spiral coupling part (32a), a second LM coupling part (32b), and a guide coupling part (32c) may be formed on both ends thereof.

[0054] The second ball screw (33) is rotatably fixed at both ends to one side of the upper part of the main body (1), and rotates to move the third barrel (32) linearly along the Z-axis while being coupled with the spiral coupling part (32a).

[0055] The second LM guide (34) is configured such that both ends are fixed to the upper side of the main body (1), and is coupled with the second LM coupling part (32b) to guide the linear movement of the third barrel (32) in the Z-axis direction.

[0056] The second motor (35) is controlled by the control unit (60) and is a stem motor that drives forward and reverse rotation to rotate the second ball screw (33) while one end of the second ball screw (33) is connected.

[0057] The above linear guide (36) is fixed to both ends of the upper side of the main body (1) and is configured to stabilize the linear movement in the Z-axis direction of the third barrel (32), and accordingly, the guide coupling part (32c) formed on the third barrel (32) can be movably coupled to the linear guide (36).

[0058] That is, the linear guide (36) is applied so that the array conversion unit (20) and the focus adjustment unit (30) can be ideally parallel, and this minimizes line of sight shaking during magnification conversion of the continuous zoom optical device while supplementing rigidity to be robust against environmental influences (e.g., temperature, vibration, etc.).

[0059] Meanwhile, the linear movement speed in the Z-axis direction according to the array conversion of the array conversion unit (20) can be set to the gear ratio of the first and second gear parts (23b, 25a) and the scissors gear (26), so that the focus adjustment by the focus adjustment unit (30) is performed at a lower speed than the linear movement speed in the Z-axis direction in which continuous focus adjustment is performed.

[0060] That is, although not shown in the drawing, an optical switch (not shown) may be formed at both ends of the main body (1) so that the magnification conversion unit (20) and the focus adjustment unit (30) are initialized to '0 point'. This is so that after initialization, the control unit (60) can precisely control the linear movement amount in the Z-axis direction of the array conversion unit (20) and the focus adjustment unit (30) by controlling the driving amount of the first and second motors (25, 35), and the focus adjustment unit (30) can continuously focus according to the optical diagram designed during magnification conversion.

[0061] The above prism unit (40) is capable of rotational movement in the X-axis and Y-axis directions, which moves the gaze to the center of the subject image screen according to the magnification conversion of the array conversion unit (20) and the focus adjustment of the focus adjustment unit (30), and includes first and second prisms (41, 42), a connecting lens (43), and a position pin (44).

[0062] The first prism (41) compensates for the X-axis tilt angle by rotating in the X-axis direction to move the gaze to the center of the subject image screen, and the second prism (42) compensates for the Y-axis tilt angle by rotating in the Y-axis direction to move the gaze to the center of the subject image screen, and the connecting lens (43) is configured to connect the first prism (41) and the second prism (42).

[0063] Here, the first prism (41) is capable of rotating in the X-axis direction by applying a thickness deviation of 0.005 mm to 0.1 mm or more to the wedge (Shim) (41a), and the second prism (42) may have a cover (not shown) formed to block light.

[0064] The above position pin (44) is a central position that allows the entire line of sight of the optical device to be rotated while minimizing line of sight distortion.

[0065] In other words, in order to efficiently move the entire line of sight of the optical device without degrading image quality, the position of the center of rotation is important, and since the optical device must be able to smoothly rotate in the X-axis direction and rotate in the Y-axis direction to adjust the X-axis tilt angle and the Y-axis tilt angle, the entire line of sight of the optical device can be adjusted by the position and shape of the position pin (44), and this can also be aligned with the line of sight of the observation module in the observation system.

[0066] The aperture (50) controls the amount of light to control the brightness of the subject being photographed by the objective lens unit (10), the magnification conversion unit (20), the focus adjustment unit (30), and the prism unit (40), and the control unit (60) can be configured to control power supply and linear movement of the magnification conversion unit (20) and the focus adjustment unit (30).

[0067] The above temperature control unit (70) is formed on the upper part of the main body (1) and performs a cooling or heating function to ensure image quality of the subject under harsh temperature conditions (e.g., +75℃ to -32℃). It may include a temperature sensor (71), a heat dissipation pad (72) in contact with the temperature sensor (71), a thermoelectric cooler (TEC) (73) in contact with the heat dissipation pad (72) and having a cooling or heating function, a heat dissipation plate (74) in contact with the thermoelectric cooler (73), a heat dissipation fan (75) placed on the top of the heat dissipation plate (74), and an insulating material (76) on which the heat dissipation plate (74) is placed.

[0068] In this way, the high-magnification continuous zoom optical device capable of aligning the line of sight and system line of sight between magnifications according to an embodiment of the present invention, as shown in the attached FIGS. 1 to 8, first aligns the placement position of the objective lens unit (10) in the X-axis direction and Y-axis direction in the main body (1), then aligns the position of the magnification conversion unit (20) and the focus adjustment unit (30) in the Z-axis direction, and then aligns the tilt angle of the prism unit (40) in the X-axis direction and Y-axis direction.

[0069] That is, while moving the objective lens unit (10) in the X-axis and Y-axis directions, the reference tolerance of the mounting surface of the magnification conversion unit (20) and the reference position geometric tolerance of the prism unit (40) in the main body (1), and the parallelism and mounting surface of the focus adjustment unit (30) and the objective lens unit (10) are checked, and the objective lens unit (10) is moved in the X-axis and Y-axis directions to adjust the center axis line of the objective lens (11) of the objective lens unit (10) and the magnification conversion lens (21) of the magnification conversion unit (20) to be parallel.

[0070] Afterwards, while checking the image of the subject of the optical device, the magnification is changed through the magnification conversion unit (20) and the optical clock line of sight alignment position is checked. If the result of the check is that the optical clock line of sight alignment position does not satisfy the specifications, the first and second prisms (41, 42) included in the prism unit (40) are rotated in the X-axis direction and / or the Y-axis direction, and the tilt angle in the X-axis direction and / or the Y-axis direction is adjusted to align the line of sight to the center of the screen, thereby adjusting the optical clock line of sight position to satisfy the alignment specifications.

[0071] And, if the above-mentioned wide-view line of sight position satisfies the alignment standard or satisfies the alignment standard through tilt angle adjustment, the difference in line of sight between the above-mentioned wide-view and narrow-view lines is checked.

[0072] At this time, if the difference in line of sight between the wide field of view and the narrow field of view does not satisfy the alignment standard, the objective lens unit (10) is moved planarly in the X-axis direction and / or the Y-axis direction to align it, and then, while checking the image of the narrow field of view, the alignment position of the objective lens unit (10) in the X-axis direction and the Y-axis direction is adjusted through an adjustment screw not shown, and the line of sight is moved to the center of the screen to satisfy the alignment standard.

[0073] And, when the difference in line of sight between the wide-angle and narrow-angled fields satisfies the alignment standard or when the difference in line of sight between the wide-angle and narrow-angled fields satisfies the alignment standard through movement in the X-axis direction and / or the Y-axis direction, the optical device according to the embodiment of the present invention is mounted in an observation system (e.g., defense, aviation, marine surveillance system, high-precision EO Tracking device, industrial inspection equipment, etc.) and the difference in line of sight with the observation modules within the observation system is checked.

[0074] At this time, if there is no difference in the line of sight between the optical device according to the embodiment of the present invention and the observation modules and the alignment standard is satisfied, the alignment is terminated. However, if the alignment standard is not satisfied, the tilt angle with respect to the Y-axis direction of the second prism (42) and the thickness deviation with respect to the wedge (41a) of the first prism (41) are adjusted, and the tilt angles with respect to the X-axis direction and the Y-axis direction of the observation system image of the optical device according to the embodiment of the present invention are adjusted to satisfy the alignment standard. Through this, the line of sight alignment with the observation module within the observation system is made possible with respect to the entrance pupil of the optical system, thereby minimizing the phenomenon where the center of the image shifts during magnification conversion and ensuring line of sight stability during magnification conversion. Furthermore, the center of the line of sight is aligned with the reference plane of the optical device according to the embodiment of the present invention to prevent image distortion, and precise line of sight alignment of the observation system can be achieved through additional alignment with the observation module within the observation system via azimuth rotation and elevation tilt assembly.

[0075] Although the technical concept of a high-magnification continuous zoom optical device capable of line of sight and system line of sight alignment between magnifications according to the present invention has been described above together with the attached drawings, this is merely an illustrative description of the best embodiment of the present invention and is not intended to limit the present invention.

[0076] Accordingly, the present invention is not limited to the specific preferred embodiments described above, and anyone with ordinary knowledge in the art to which the invention pertains can make various modifications without departing from the essence of the invention as claimed in the claims, and such modifications will be within the scope of the claims. Explanation of the symbols

[0078] 1; main body part 1a; first main body 1b; 2nd main body 1c; 1st cover 1d; 2nd cover 10; objective lens unit 11; Objective lens 12; First barrel 12a; first fastener 20; magnification conversion unit 21; magnification conversion lens 22; second barrel 22a; first spiral coupling part 22b; first LM coupling part 23; 1st ball screw 23a; 1st bearing 23b; 2nd gear section 24; 1st LM guide 25; 1st motor 25a; 2nd gear section 25b; drive shaft 26; scissors gear 30; Focusing unit 31; Focusing lens 32; third barrel 32a; second spiral coupling 32b; 2nd LM coupling part 32c; guide coupling part 33; 2nd ball screw 34; 2nd LM guide 35; Second motor 36; Linear guide 40; Prism unit 41; First prism 41a; wedge 42; second prism 43; connecting lens 44; position pin 50; aperture 60; control unit 70; Temperature control unit 71; Temperature sensor 72; Thermal pad 73; Thermoelectric element 74; Heat sink 75; Cooling fan 76; Insulation material

Claims

Claim 1 An objective lens unit configured in the main body, capable of alignment and movement in the X-axis and Y-axis directions, which gathers the focus of a subject and reduces the difference in line of sight between magnifications; a magnification conversion unit that is parallel to the lens center axis of the objective lens unit and moves linearly in the Z-axis direction to convert the magnification according to the shooting of a subject focused by the objective lens unit; a focus adjustment unit that is arranged parallel to the magnification conversion unit and moves linearly in the Z-axis direction to continuously adjust the focus according to the magnification conversion of the magnification conversion unit; a prism unit capable of rotational movement in the X-axis and Y-axis directions, which moves the line of sight to the center of the subject image screen according to the magnification conversion of the magnification conversion unit and the focus adjustment of the focus adjustment unit; and an aperture that adjusts the amount of light to control the brightness when shooting a subject by the objective lens unit, the magnification conversion unit, the focus adjustment unit, and the prism unit. A high-magnification continuous zoom optical device capable of alignment of line of sight between magnifications and system line of sight, comprising: a power supply and a control unit that controls the linear movement of the magnification conversion unit and the focus adjustment unit; wherein the objective lens unit comprises a first barrel in which an objective lens is received, and the first barrel is configured to move in alignment in the X-axis and Y-axis directions according to the fastening force of a plurality of adjustment screws to set the difference in line of sight between the narrow field of view and the wide field of view to zero by decentering movement, wherein a first fastening hole is formed in the first barrel for fastening the adjustment screw, and a second fastening hole is formed in the main body portion that is larger than the diameter of the first fastening hole and guides the alignment movement of the adjustment screw in the X-axis or Y-axis direction. Claim 2 delete Claim 3 delete Claim 4 A high-magnification continuous zoom optical device capable of aligning line of sight and system line of sight between magnifications, characterized in that the magnification conversion unit comprises: a second barrel having a first spiral coupling part and a first LM coupling part formed at both ends thereof for receiving a magnification conversion lens; a first ball screw having both ends rotatably fixed to one side of the lower part of the main body through a first bearing and a first gear part, coupled to the first spiral coupling part to linearly move the second barrel in the Z-axis direction; a first LM guide having both ends fixed to the other side of the lower part of the main body, coupled to the first LM coupling part to guide the linear movement of the second barrel in the Z-axis direction; and a first motor having a drive shaft connected through the first gear part and the second gear part of the first ball screw to drive the first ball screw to rotate. Claim 5 A high-magnification continuous zoom optical device capable of line of sight and system line of sight alignment between magnifications, characterized in that, in claim 4, the first gear part and the second gear part of the first ball screw are connected by a scissors gear to achieve zero backlash when transmitting the driving force of the first motor and to increase positional accuracy according to magnification conversion. Claim 6 A high-magnification continuous zoom optical device capable of aligning line of sight and system line of sight between magnifications, characterized in that the focus adjustment unit comprises: a third barrel having a second spiral coupling part and a second LM coupling part formed at both ends thereof for receiving a focus adjustment lens; a second ball screw having both ends rotatably fixed to one side of the upper part of the main body and coupled to the spiral coupling part to linearly move the third barrel in the Z-axis direction; a second LM guide having both ends fixed to the other side of the upper part of the main body and coupled to the second LM coupling part to guide the linear movement of the third barrel in the Z-axis direction; and a second motor having one end of the second ball screw connected to drive the second ball screw to rotate. Claim 7 A high-magnification continuous zoom optical device capable of aligning line of sight and system line of sight between magnifications, characterized in that, in claim 6, a linear guide that stabilizes the linear movement in the Z-axis direction of the third lens barrel is fixed to both ends of the upper side of the main body, and a guide coupling part that is movably coupled to the linear guide is formed on the third lens barrel. Claim 8 A high-magnification continuous zoom optical device capable of line of sight between magnifications and system line of sight alignment, characterized in that, in claim 5, the linear movement speed in the Z-axis direction according to the magnification conversion of the magnification conversion unit is set to a lower speed than the linear movement in the Z-axis direction in which focus adjustment by the focus adjustment unit is continuously performed, by the gear ratio of the first and second gear parts and the scissors gear. Claim 9 A high-magnification continuous zoom optical device capable of aligning line of sight between magnifications and system line of sight, characterized in that, in claim 1, optical switches are formed at both ends of the main body so that the magnification conversion unit and the focus adjustment unit are initialized to '0 point'. Claim 10 A high-magnification continuous zoom optical device capable of line of sight and system line of sight alignment between magnifications, characterized in that the prism unit comprises: a first prism that compensates for an X-axis tilt angle by rotating in the X-axis direction to move the line of sight to the center of the subject image screen; a second prism that compensates for a Y-axis tilt angle by rotating in the Y-axis direction to move the line of sight to the center of the subject image screen; and a connecting lens that connects the first prism and the second prism. Claim 11 A high-magnification continuous zoom optical device capable of aligning line of sight between magnifications and system line of sight, characterized in that, in claim 10, a cover for blocking light is formed on the second prism. Claim 12 A high-magnification continuous zoom optical device capable of aligning line of sight between magnifications and system line of sight, characterized in that, in claim 10, the first prism is configured to rotate in the X-axis direction through a wedge having a predetermined thickness. Claim 13 A high-magnification continuous zoom optical device capable of aligning line of sight between magnifications and system line of sight, characterized in that, in the prism unit, the above-mentioned prism unit further includes a position pin that sets a center position capable of rotating and shifting the entire line of sight of the optical device while minimizing line of sight distortion. Claim 14 A high-magnification continuous zoom optical device capable of line of sight and system line of sight alignment between magnifications, characterized in that, in claim 1, a temperature control unit with a cooling or heating function is formed on the upper part of the main body to ensure image quality of the subject under harsh temperature conditions. Claim 15 A high-magnification continuous zoom optical device capable of aligning line of sight and system line of sight between magnifications, characterized in that, in claim 14, the temperature control unit comprises: a temperature sensor; a heat dissipation pad in contact with the temperature sensor; a thermoelectric element in contact with the heat dissipation pad and having a cooling or heating function; and a heat sink in contact with the thermoelectric element. Claim 16 A high-magnification continuous zoom optical device capable of aligning line of sight between magnifications and system line of sight, characterized in that, in claim 15, the temperature control unit further includes a cooling fan disposed on the top of the heat sink. Claim 17 A high-magnification continuous zoom optical device capable of aligning line of sight between magnifications and system line of sight, characterized in that, in the temperature control unit, the above temperature control unit further includes an insulating material on which the heat sink is placed.

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