Device for calibrating optical axis of binocular telescope

Abstract

The utility model belongs to the technical field of optical gauges, and particularly discloses a device for calibrating the optical axis of a binocular telescope. A double-tube front lens of the device is fixed on the upper portion of an adjusting frame, a collimator, a supporting seat and the adjusting frame are sequentially arranged on a workbench, a cross reticle I is arranged in the collimator, cross reticles II are arranged in lens bodies of the double-tube front lens, and a supporting flat plate for placing a binocular is arranged at the top end of the supporting seat. Three adjusting screws I in threaded connection are evenly distributed on a base I of the adjusting frame in the circumferential direction, a bottom sleeve is vertically fixed to the middle of the upper surface of the base I, the lower portion of a lifting rod extends into the bottom sleeve in a sliding mode, a set screw is arranged on the side wall of the bottom sleeve to lock the lifting rod, and a double-tube front mirror is detachably and fixedly connected to the top end of the lifting rod. According to the utility model, the binocular telescope can be directly placed on the supporting flat plate of the supporting seat to directly detect the optical axis deviation, and the device has the characteristics of simple structure, convenient detection, flexible adjustment and low cost.

Description

Technical Field

[0001] The utility model relates to the technical field of optical inspection tools, and particularly relates to a device for checking the optical axis of a binocular telescope, which has a simple structure, convenient verification, flexible adjustment and low cost. Background Technique

[0002] The optical axis of a telescope refers to the ideal straight path of light propagation in each telescope barrel, that is, a virtual straight line starting from the center of the objective lens, passing through the internal optical system of the telescope, and finally converging at the focal point of the eyepiece. Since the optical axes of the left and right barrels of a binocular telescope may deviate due to errors in part processing, assembly, etc., it is necessary to check the parallelism of the optical axes of the left and right barrels to provide a basis for adjustment after out-of-tolerance, so as to ensure the image clarity, stereoscopic effect and parallax size during the observation of the binocular telescope.

[0003] The following three methods are commonly used for checking the optical axis of traditional binocular telescopes: One is the collimator method: using a collimator to generate parallel light, clamping and adjusting the binocular telescope to a suitable position through a clamping device, and then directly observing the image formed by the light in the telescope to judge whether the optical axes are parallel. The second is the interference method: using the interference fringes generated by an interferometer to evaluate the parallelism of the optical axis by measuring the bending degree of the fringes. The third is the image comparison method: by observing a fixed target in the distance and comparing the coincidence degree of the images in the two barrels to judge whether the optical axes are consistent. Although the first method has a simple structure and relatively convenient measurement, since each binocular telescope verification requires auxiliary work such as clamping, adjustment and disassembly, the operation is cumbersome and the verification efficiency is low; the second and third methods have high requirements for the experience of the inspectors, and the verification error is large, so it is difficult to be widely applied.

[0004] In view of the deficiencies of the foregoing methods and devices in the prior art, modern devices such as high-precision laser interferometers and automated optical axis verification systems have emerged, which can achieve high-precision measurement of the optical axis parallelism and ensure the observation quality of the telescope. It can not only realize automated measurement and intelligent analysis, greatly improving the verification efficiency and accuracy; but also reduce the labor intensity of the staff, and reduce the influence of human errors; and it can also comprehensively evaluate other optical performances of the telescope, providing data support for the comprehensive performance evaluation of the telescope. However, the above devices are not only expensive and unaffordable for small manufacturers or enterprises with limited budgets; but also the operation and maintenance of the devices require certain professional knowledge and skills, resulting in non-professionals needing to undergo long-term training and learning to master them proficiently; and some verification devices may need to rely on specific environmental conditions or external devices, and these factors may affect the accuracy and stability of the verification.

[0005] Therefore, how to achieve rapid, simple, low-cost, and high-precision verification of the optical axis of binoculars is a technical problem that small optical enterprises urgently need to solve at present. Summary of the Invention

[0006] In view of the deficiencies in the prior art, the present utility model provides a device for verifying the optical axis of binoculars, which has a simple structure, convenient verification, flexible adjustment, and low cost.

[0007] The present utility model is implemented as follows: It includes a workbench, a collimator, a support base, a double-tube front sight, and an adjustment frame. The double-tube front sight is fixedly arranged on the upper part of the adjustment frame. The collimator, the support base, and the adjustment frame are sequentially arranged on the workbench surface. A cross reticle I is arranged inside the collimator. Cross reticles II are arranged in each lens body of the double-tube front sight. The top of the support base is provided with a support flat plate for placing the binoculars. The adjustment frame includes a base I, a bottom sleeve, a lifting rod, and a set screw. Three adjusting screws I are circumferentially and evenly distributed on the base I and are threadedly connected. The bottom sleeve is vertically and fixedly arranged in the middle of the upper surface of the base I. The lower part of the lifting rod slides into the bottom sleeve. The set screw is arranged on the side wall of the bottom sleeve to lock the lifting rod in the bottom sleeve. The double-tube front sight is detachably and fixedly connected to the top of the lifting rod.

[0008] Further, a base II is arranged at the bottom of the support base, and three adjusting screws II are circumferentially and evenly distributed on the base II and are threadedly connected.

[0009] Further, the support base further includes an adjusting screw rod, an adjusting nut, and a sliding sleeve. The adjusting screw rod is vertically and fixedly arranged in the middle of the upper surface of the base II. The adjusting nut is threadedly sleeved on the adjusting screw rod. The sliding sleeve is vertically and fixedly arranged on the lower surface of the support flat plate. The lower part of the sliding sleeve is slidably sleeved on the adjusting screw rod and the bottom end abuts against the top end of the adjusting nut.

[0010] Further, a chute extending along the axial direction is arranged on the outer wall of the adjusting screw rod, and a slider extending along the axial direction is fixedly arranged on the inner wall of the sliding sleeve. The sliding sleeve is slidably sleeved on the adjusting screw rod and the slider slidably extends in the chute.

[0011] Further, one end of each lens body of the double-tube front sight facing the collimator is a tubular structure, and the eyepieces of the binoculars can be slidably inserted into the tubular structures of the two lens bodies of the double-tube front sight facing the collimator.

[0012] Further, a strip-shaped groove is axially formed on one side of the upper part of the bottom sleeve. On both sides of the strip-shaped groove on the outer wall of the upper part of the bottom sleeve, connecting ears are arranged in parallel. On both sides of the strip-shaped groove, the connecting ears are coaxially provided with screw holes and through holes. The set screw passes through the through hole and is connected to the screw hole to tighten the connecting ears on both sides of the strip-shaped groove to lock the lifting rod in the bottom sleeve.

[0013] Further, the aperture of the collimator can accommodate the fields of view of the left objective lens and the right objective lens of the binocular telescope.

[0014] Further, the utility model further includes a positioning block that can be placed on the upper surface of the support flat plate. A double "V" groove for positioning the binocular telescope is arranged at the top of the positioning block, and a magnet block is arranged at the bottom of the positioning block.

[0015] The beneficial effects of the utility model are as follows:

[0016] 1. The double-tube front sight of the utility model is arranged on the adjusting frame. According to the size of the pre-verified binocular telescope, the height and elevation angle of the double-tube front sight can be adjusted through the adjusting frame. By arranging a support base with a support flat plate at the top between the collimator and the double-tube front sight, the binocular telescope can be directly placed on the support flat plate. By simply adjusting the position of the binocular telescope, the optical axes of the collimator, the binocular telescope, and the double-tube front sight can be made to be in a straight line, realizing the verification of the optical axis of the binocular telescope. Since the double-tube front sight only needs to be adjusted once for the verification of the same batch of binocular telescopes, and the binocular telescope to be verified directly placed on the support flat plate only needs to be simply adjusted in the left-right position and the left-right inclination angle to be verified, the auxiliary processes of clamping, adjusting, and disassembling for each binocular telescope to be verified in the traditional method are avoided. This not only simplifies the verification operation process and improves the verification efficiency, but also makes the adjustment of the double-tube front sight by the adjusting frame more flexible and convenient for the verification of different binocular telescopes.

[0017] 2. A cross reticle I is arranged in the collimator of the utility model, and a cross reticle II is arranged in each lens body of the double-tube front sight. Through the cooperation of the cross reticle I and the cross reticle II, the parallelism error of the optical axis of the binocular telescope can be accurately verified, providing basic data for subsequent adjustment of the optical axis of the binocular telescope. Therefore, the verification accuracy is relatively high, and the professional knowledge and skills requirements of the operator can also be reduced.

[0018] 3. An adjusting screw I is arranged on the adjusting frame base I of the utility model, which can adjust the elevation angle of the double-tube front sight installed at the top. Through the cooperation of the bottom sleeve, the lifting rod, and the set screw, the height of the double-tube front sight installed at the top can be adjusted, so that the double-tube front sight can flexibly adapt to the verification of different sizes of binocular telescopes.

[0019] In summary, the utility model has the characteristics of simple structure, convenient verification, flexible adjustment and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the utility model;

[0021] Figure 2 is a top view of the utility model;

[0022] Figure 3 is a schematic structural diagram of the support base and positioning block of the utility model;

[0023] Figure 4 is a schematic structural diagram of the adjusting frame of the utility model;

[0024] In the figure: 1 - workbench, 2 - collimator, 3 - support base, 31 - support flat plate, 32 - base II, 33 - adjustment screw II, 34 - adjustment screw rod, 35 - adjustment nut, 36 - sliding sleeve, 37 - sliding groove, 4 - double-tube front sight, 5 - adjusting frame, 51 - base I, 52 - adjustment screw I, 53 - bottom sleeve, 54 - lifting rod, 55 - locking screw, 56 - connecting ear, 6 - positioning block, 61 - double "V" groove, 7 - binocular telescope. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In order to make the purpose, technical solutions and advantages of the utility model clearer, the following further describes the utility model in detail with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model.

[0026] As Figures 1 to 4 shown, the utility model includes a workbench 1, a collimator 2, a support base 3, a double-tube front sight 4, and an adjusting frame 5. The double-tube front sight 4 is fixedly arranged on the upper part of the adjusting frame 5. The collimator 2, the support base 3, and the adjusting frame 5 are sequentially arranged on the tabletop of the workbench 1. A cross reticle I is arranged in the collimator 2. Cross reticles II are arranged in each branch mirror body of the double-tube front sight 4. A support flat plate 31 for placing a binocular telescope 7 is arranged at the top end of the support base 3. The adjusting frame 5 includes a base I 51, a bottom sleeve 53, a lifting rod 54, and a locking screw 55. Three circumferentially evenly distributed adjustment screws I 52 are threadedly connected to the base I 51. The bottom sleeve 53 is vertically fixedly arranged in the middle of the upper surface of the base I 51. The lower part of the lifting rod 54 slides into the bottom sleeve 53. The locking screw 55 is arranged on the side wall of the bottom sleeve 53 to lock the lifting rod 54 in the bottom sleeve 53. The double-tube front sight 4 is detachably and fixedly connected to the top end of the lifting rod 54.

[0027] A base II 32 is provided at the bottom of the support base 3, and three adjusting screws II 33 connected by threads are circumferentially and evenly distributed on the base II 32.

[0028] The support base 3 further includes an adjusting screw rod 34, an adjusting nut 35, and a sliding sleeve 36. The adjusting screw rod 34 is vertically fixed in the middle of the upper surface of the base II 32. The adjusting nut 35 is sleeved on the adjusting screw rod 34 by threads. The sliding sleeve 36 is vertically fixed on the lower surface of the support flat plate 31. The lower part of the sliding sleeve 36 is slidably sleeved on the adjusting screw rod 34 and the bottom end abuts against the top end of the adjusting nut 35.

[0029] A chute 37 extending along the axial direction is provided on the outer wall of the adjusting screw rod 34. A slider extending along the axial direction is fixedly provided on the inner wall of the sliding sleeve 36. The sliding sleeve 36 is slidably sleeved on the adjusting screw rod 34 and the slider slidably extends into the chute 37.

[0030] One ends of the two lens bodies of the double-tube front sight 4 facing the collimator 2 are both tubular structures. The eyepieces of the binocular telescope 7 can be slidably inserted into the tubular structures of the two lens bodies of the double-tube front sight 4 facing the collimator 2.

[0031] A strip-shaped groove is axially provided on one side of the upper part of the bottom sleeve 53. Connecting ears 56 are arranged in parallel on both sides of the strip-shaped groove on the outer wall of the upper part of the bottom sleeve 53. Screw holes and through holes are coaxially provided corresponding to the connecting ears 56 on both sides of the strip-shaped groove. The set screw 55 passes through the through hole and is connected to the screw hole to tighten the connecting ears 56 on both sides of the strip-shaped groove to lock the lifting rod 54 in the bottom sleeve 53.

[0032] The aperture of the collimator 2 can accommodate the fields of view of the left objective lens and the right objective lens of the binocular telescope 7.

[0033] The utility model further includes a positioning block 6 that can be placed on the upper surface of the support flat plate 31. A double "V" - shaped groove 61 for positioning the binocular telescope 7 is provided at the top of the positioning block 6, and a magnet block is provided at the bottom of the positioning block 6.

[0034] The working principle and working process of the utility model:

[0035] As Figures 1 to 4As shown, before verification, the collimator 2, the support base 3 and the adjusting bracket 5 are successively placed on the workbench 1. Then, according to the size of the binocular telescope 7 to be measured, first rotate the adjusting nut 35 on the adjusting screw 34 to drive the sliding sleeve 36 to move up and down along the adjusting screw 34 under the limitation of the slider and the sliding groove 37, so that the support flat plate 31 is at a suitable height. At this time, the objective lens of the binocular telescope 7 to be measured placed on the support flat plate 31 is facing the sight opening of the collimator 2. When necessary, a spirit level is placed on the support flat plate 31, and by adjusting the adjusting screw II 33 on the base II 32, the support flat plate 31 is made horizontal; then the double-tube front sight 4 is connected and fixed to the lifting rod 54. Subsequently, according to the size of the binocular telescope 7 to be measured, loosen the set screw 55 and adjust the lifting rod 54 up and down. When the two lens bodies of the double-tube front sight 4 are respectively opposite to the eyepieces of the binocular telescope 7 to be measured, tighten the set screw 55 to clamp the lifting rod 54 in the bottom sleeve 53. Subsequently, adjust the adjusting screw I 52 on the base I 51 according to the horizontal state of the double-tube front sight 4 to make the double-tube front sight 4 horizontal, and complete the preparation of the verification device.

[0036] During verification, first adjust the focal length, diopter and interpupillary distance of the binocular telescope 7 to be measured. Place the binocular telescope 7 to be measured directly on the support flat plate 31, and then adjust the left and right positions and left and right tilts of the binocular telescope 7 so that the objective lens of the binocular telescope 7 to be measured is facing the sight opening of the collimator 2, and the eyepiece is opposite to the two lens bodies of the double-tube front sight 4 (it is also possible to first adsorb the positioning block 6 on the support flat plate 31 through the magnet block at the bottom, and then adjust the binocular telescope 7 on the positioning block 6 through the adjusting nut 35 and the adjusting screw II 33 so that the objective lens of the binocular telescope 7 to be measured is facing the sight opening of the collimator 2, and the eyepiece is opposite to the two lens bodies of the double-tube front sight 4. Subsequently, during the formal verification, directly place the binocular telescope 7 to be measured on the positioning block 6 to carry out the measurement). Then, measure the optical axis of the binocular telescope 7 through the double-tube front sight 4, and read the optical axis deviation through the cross reticle I and the cross reticle II. Finally, judge whether it is qualified according to the optical axis deviation. The unqualified binocular telescope 7 is adjusted according to the optical axis deviation to complete the verification of the binocular telescope 7.

[0037] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A device for calibrating the optical axis of binoculars, characterized in that: The invention comprises a workbench (1), a collimator (2), a support seat (3), a double-tube front mirror (4), and an adjustment frame (5), wherein the double-tube front mirror (4) is fixedly arranged on the upper part of the adjustment frame (5), the collimator (2), the support seat (3) and the adjustment frame (5) are arranged on the table surface of the workbench (1) in sequence, a cross-reticle plate I is arranged inside the collimator (2), and each mirror body of the double-tube front mirror (4) is provided with a cross-reticle plate II, a support plate (31) for placing binoculars (7) is arranged on the top of the support seat (3), and the adjustment frame ( 5) comprises a base I (51), a bottom sleeve (53), a lifting rod (54), and a fixing screw (55); three threaded adjustment screws I (52) are evenly distributed on the circumference of the base I (51); the bottom sleeve (53) is vertically fixedly arranged in the middle of the upper surface of the base I (51); the lower part of the lifting rod (54) slides into the bottom sleeve (53); the fixing screw (55) is arranged on the side wall of the bottom sleeve (53) to lock the lifting rod (54) in the bottom sleeve (53); and the double-tube front mirror (4) is detachably fixedly connected to the top of the lifting rod (54).

2. The device for calibrating the optical axis of binoculars according to claim 1, characterized in that: A base II (32) is provided at the bottom of the support seat (3), and three threaded adjustment screws II (33) are evenly distributed circumferentially on the base II (32).

3. The device for calibrating the optical axis of binoculars according to claim 2, characterized in that: The support base (3) further comprises an adjusting screw (34), an adjusting nut (35), and a sliding sleeve (36); the adjusting screw (34) is vertically fixed to the middle of the upper surface of the base II (32); the adjusting nut (35) is threadedly connected and sleeved on the adjusting screw (34); the sliding sleeve (36) is vertically fixed on the lower surface of the supporting plate (31); the lower part of the sliding sleeve (36) is slidably sleeved on the adjusting screw (34) and the bottom end thereof abuts against the top end of the adjusting nut (35).

4. The device for calibrating the optical axis of binoculars according to claim 3, characterized in that: The outer wall of the adjusting screw (34) is provided with a sliding groove (37) extending in the axial direction, and the inner wall of the sliding sleeve (36) is fixedly provided with a sliding block extending in the axial direction. The sliding sleeve (36) is slidably mounted on the adjusting screw (34) and the sliding block slidably extends in the sliding groove (37).

5. The device for calibrating the optical axis of binoculars according to claim 1, characterized in that: The ends of the two mirror bodies of the double-tube front mirror (4) facing the collimator (2) are both tubular structures, and the two mirror bodies of the double-tube front mirror (4) facing the collimator (2) can be slidably inserted into the eyepieces of the binoculars (7).

6. The device for calibrating the optical axis of binoculars according to claim 1, characterized in that: A strip groove is formed in the axial direction on one side of the upper portion of the bottom sleeve (53); connecting ears (56) are arranged in parallel on both sides of the strip groove on the upper portion of the outer wall of the bottom sleeve (53); screw holes and through holes are coaxially arranged on the connecting ears (56) on both sides of the strip groove; the set screws (55) pass through the through holes and are connected to the screw holes to tighten the connecting ears (56) on both sides of the strip groove to lock the lifting rod (54) in the bottom sleeve (53).

7. The device for calibrating the optical axis of binoculars according to any one of claims 1 to 6, characterized in that: The aperture of the collimator (2) can take into account the field of view of the left objective lens and the right objective lens of the binoculars (7).

8. The device for calibrating the optical axis of binoculars according to claim 7, characterized in that: It also includes a positioning block (6) that can be placed on the upper surface of the supporting plate (31), the top of the positioning block (6) is provided with a double "V"-shaped groove (61) that can position the binoculars (7), and the bottom of the positioning block (6) is provided with a magnet block.

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