Binocular ranging telescope optical system with laser optical axis synchronously tracking telescope optical axis

Abstract

The utility model discloses a binocular range finding telescope optical system with a laser optical axis synchronously tracking a telescope optical axis, comprising a left lens barrel and a right lens barrel, the left lens barrel comprises a left barrel objective lens group, a left barrel prism group, a left barrel eyepiece group and a left barrel laser receiving group, and the right lens barrel comprises a right barrel objective lens group, a right barrel prism group, a right barrel eyepiece group and a right barrel laser emitting group. The left cylinder prism group and the right cylinder prism group are of the same structure and are composed of beam splitting prisms, half pentaprisms and Schmidt roof prisms, the left cylinder prism group and the left cylinder laser receiving group are installed in a position adjusting mechanism to be integrally adjusted, and the right cylinder prism group and the right cylinder laser transmitting group are installed in another position adjusting mechanism to be integrally adjusted. Two sets of telescopic optical systems of the binocular telescope detect whether a laser optical axis and a telescopic optical axis are coaxial or not while detecting the parallelism of the optical axis, so that the product quality is ensured, and the detection process is simplified.

Description

Technical Field

[0001] The utility model relates to a binocular distance measuring telescope optical system in which a laser optical axis synchronously tracks a telescope optical axis. Background Art

[0002] The optical axis refers to the axis of the optical system. Binoculars have two optical systems, which means two axes. When we use the telescope to observe the scenery, these two axes must remain parallel. Only in this way can we use it normally and experience the fun of using the telescope.

[0003] For binoculars, the optical axis is one of its important parameters. The quality of the optical axis directly affects the user's observation experience. A telescope with an uncorrected optical axis will have two non-overlapping images of a scene, which will make people feel dizzy. A telescope with an optical axis that exceeds the range of human eye acceptance but is not easy to detect will make people's eyes feel tired if they observe for a long time, and long-term use will damage their eyesight. This shows the importance of the optical axis of a telescope.

[0004] During the production process of telescopes, due to the limitations of parts processing accuracy and assembly process, it is difficult to ensure that the optical axes of the two lens barrels are in a parallel state without any debugging. Therefore, during the assembly process, an "optical axis correction" process is generally used to correct the two optical axes to a parallel state. Depending on the structure of the telescope, the method of adjusting the optical axis is also different. It can be roughly divided into two types: one is to adjust the prism through screws, and change the optical axis by changing the position of the prism, so as to achieve the purpose of correcting the optical axis. The other is to design an eccentric structure in the objective lens part. By adjusting the eccentric structure, the center of the objective lens is changed, and the optical axis is changed to achieve the purpose of optical axis correction. In addition, the instruments used to correct the optical axis are different, and the correction methods are also different. At present, there are basically two types of instruments used in production factories: one is the "telescope comprehensive inspection instrument"; the other is the "collimator".

[0005] With the expansion of binoculars' functions, binoculars with ranging functions have been widely recognized by consumers in the market. That is, on the basis of the original binoculars, laser emission modules, laser receiving modules and display modules are added. The three added modules are combined with the original binoculars' optical system, resulting in a more complex structure, and higher precision and related requirements. However, the current binoculars with ranging functions on the market are tested for parallelism of the telescope optical axis of the left and right lens barrels before leaving the factory, but there is no test for whether the emission optical axis of the laser emission module and the receiving optical axis of the laser receiving module can automatically track the optical axis of the telescope, or there is no special instrument for testing, resulting in the angular deviation between the emission optical axis and the telescope optical axis exceeding a certain range (see Figure 1As shown in the figure, the accuracy of the data is seriously affected. For example, binoculars are used to observe a building 3,000 meters away. Due to the angular deviation between the emission optical axis and the telescope optical axis (assuming an angle of 1 degree), the laser irradiation point is on another building, and the measurement accuracy will be greatly deviated.

[0006] In view of this, is it possible to develop a binoculars optical system with a ranging function so that the laser optical axis can synchronously track the telescope optical axis (that is, the laser optical axis is coaxial with the telescope optical axis)? While testing the parallelism of the optical axes of the two telescope optical systems of the binoculars, it is also possible to test whether the laser optical axis is coaxial with the telescope optical axis, thereby ensuring product quality and simplifying the testing process. Summary of the invention

[0007] The utility model provides a binocular distance measuring telescope optical system with a laser optical axis synchronously tracking a telescope optical axis, which can detect whether the laser optical axis and the telescope optical axis are coaxial while two sets of telescopic optical systems of the binoculars detect the parallelism of the optical axes, thereby ensuring product quality and simplifying the detection process.

[0008] The technical solution of the utility model is achieved in this way:

[0009] The optical system of binocular distance measuring telescope with laser optical axis synchronously tracking telescope optical axis comprises a left lens tube and a right lens tube, wherein:

[0010] The left lens barrel comprises a left lens group, a left prism group, a left eyepiece group and a left laser receiving group. The left lens group, the left prism group and the left eyepiece group are arranged in sequence along the linear optical axis S1 of the left lens barrel from the object side to the eye side. The left laser receiving group is arranged on one side of the linear optical axis S1 and between the left prism group and the left eyepiece group.

[0011] The right lens barrel comprises a right lens group, a right prism group, a right eyepiece group and a right laser emission group. The right lens group, the right prism group and the right eyepiece group are sequentially arranged along the straight optical axis S2 of the right lens barrel from the object side to the eye side. The right laser emission group is arranged on one side of the straight optical axis S2 and between the right prism group and the right eyepiece group.

[0012] The left-barrel prism group and the right-barrel prism group both adopt the same structure, consisting of a beam splitter prism, a half pentaprism and a Schmidt roof prism, and are characterized in that the left-barrel prism group and the left-barrel laser receiving group are installed in a position adjustment mechanism for integrated adjustment, and the right-barrel prism group and the right-barrel laser emitting group are installed in another position adjustment mechanism for integrated adjustment.

[0013] The display assembly is arranged on one side of the linear optical axis S2, between the right tube prism assembly and the right tube objective lens assembly. The display assembly, the right tube prism assembly and the right tube laser emission assembly are installed in the same position adjustment mechanism for integral adjustment.

[0014] The above-mentioned display assembly includes an OLED screen and a projection lens.

[0015] The above-mentioned left-tube laser receiving group includes a laser receiving tube and a receiving lens, and the right-tube laser emitting group includes a laser emitting tube and an emitting lens.

[0016] The above-mentioned beam splitter prism is a compensating beam splitter prism, and its optical bonding surface M1 is much smaller than the semi-penta optical surface of the semi-penta prism. The optical bonding surface M1 of the beam splitter prism is only used to introduce laser or OLED display light.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1. The utility model discloses a binocular rangefinder optical system in which the laser optical axis synchronously tracks the optical axis of the telescope. The left-barrel objective lens group, the left-barrel prism group and the left-barrel eyepiece group are sequentially arranged along the linear optical axis S1 of the left lens barrel from the object side to the eye side. The right-barrel objective lens group, the right-barrel prism group and the right-barrel eyepiece group are sequentially arranged along the linear optical axis S2 of the right lens barrel from the object side to the eye side. The left-barrel prism group and the right-barrel prism group both adopt the same structure, which consists of a beam splitter prism, a half pentaprism and a Schmidt roof prism. The utility model is characterized in that the left-barrel prism group and the left-barrel laser receiving group are mounted in a position adjustment mechanism for integral adjustment, and the right-barrel prism group and the right-barrel laser emitting group are mounted in another position adjustment mechanism for integral adjustment. By adjusting the parallelism of the telescopic optical axes of the left lens barrel and the right lens barrel, the laser optical axis is made coaxial with the telescopic optical axis at the same time, thereby ensuring the quality of the product and simplifying the detection process.

[0019] 2. Other advantages of the present invention are described in detail in the embodiment section. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of an existing binoculars observing a building 3000 meters away;

[0021] Figure 2 It is a three-dimensional diagram of the utility model;

[0022] Figure 3 This is a cross-sectional view of the structure of the utility model;

[0023] Figure 4 This is an optical principle diagram of the utility model;

[0024] Figure 5 This is an optical principle diagram of the right lens barrel of the utility model;

[0025] Figure 6 This is an optical principle diagram of the left lens barrel of the utility model;

[0026] Figure 7 It is a schematic diagram of the position adjustment mechanism of the utility model. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Example:

[0029] like Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the binocular distance measuring telescope optical system provided by this embodiment for synchronously tracking the optical axis of the telescope by the laser optical axis includes a left lens barrel 100 and a right lens barrel 200, wherein:

[0030] The left lens barrel 100 includes a left lens group 11, a left prism group 12, a left eyepiece group 13 and a left laser receiving group 14. The left lens group 11, the left prism group 12 and the left eyepiece group 13 are sequentially arranged along the linear optical axis S1 of the left lens barrel 100 from the object side to the eye side. The left laser receiving group 14 is arranged at one side of the linear optical axis S1 and between the left prism group 12 and the left eyepiece group 13.

[0031] The right lens barrel 200 includes a right-barrel objective lens group 21, a right-barrel prism group 22, a right-barrel eyepiece group 23 and a right-barrel laser emission group 24. The right-barrel objective lens group 21, the right-barrel prism group 22 and the right-barrel eyepiece group 23 are sequentially arranged along the linear optical axis S2 of the right lens barrel 200 from the object side to the eye side. The right-barrel laser emission group 24 is arranged at one side of the linear optical axis S2 and between the right-barrel prism group 22 and the right-barrel eyepiece group 23.

[0032] The left-barrel prism group 12 and the right-barrel prism group 22 both adopt the same structure, consisting of a beam splitter prism 3, a half pentaprism 4 and a Schmidt roof prism 5, and are characterized in that the left-barrel prism group 12 and the left-barrel laser receiving group 14 are installed in a position adjustment mechanism 300 for integral adjustment, and the right-barrel prism group 22 and the right-barrel laser emitting group 24 are installed in another position adjustment mechanism 300 for integral adjustment.

[0033] The display assembly 25 is arranged on one side of the linear optical axis S2 and between the right tube prism assembly 22 and the right tube objective lens assembly 21. The display assembly 25, the right tube prism assembly 22 and the right tube laser emission assembly 24 are installed in the same position adjustment mechanism 300 for integral adjustment.

[0034] The display assembly 25 includes an OLED screen 10a and a projection lens 10b.

[0035] The left tube laser receiving group 14 includes a laser receiving tube 6 and a receiving lens 7, and the right tube laser emitting group 24 includes a laser emitting tube 8 and an emitting lens 9. The laser optical axis and the telescope optical axis (i.e. Figure 4 The receiving lens 7 is adjusted axially to achieve energy focusing. The emitting lens 9 is adjusted axially to achieve the collimation of the emitted laser. Figure 5 A splitting point A is set on the middle splitting prism 3. By adjusting the laser emitting tube 8 to align with the splitting point A, the straight optical axis S1 (i.e., the telephoto optical axis) can be tracked, even if the straight optical axis S1 (i.e., the telephoto optical axis) is coaxial with the laser emitting optical axis; Figure 6 Another beam splitter prism 3 is used to set a beam splitting point B. By adjusting the laser receiving tube 6 to align with the beam splitting point B, the straight optical axis S2 (i.e. the telephoto optical axis) can be tracked, even if the straight optical axis S2 (i.e. the telephoto optical axis) is coaxial with the laser receiving optical axis.

[0036] The above-mentioned beam splitter prism 3 is a compensating beam splitter prism, and its optical bonding surface M1 is much smaller than the semi-penta optical surface of the semi-penta prism 4. The optical bonding surface M1 of the beam splitter prism 3 is only used to introduce laser or OLED display light.

[0037] like Figure 7 As shown, it is a position adjustment mechanism 300 in the left lens barrel 100. The left lens barrel prism group 12 and the left lens barrel laser receiving group 14 are installed in a position adjustment mechanism 300 for integrated adjustment. The position adjustment mechanism 300 includes a mounting chassis 31, a mounting bracket 32 ​​and three adjustment screws 33. The left lens barrel prism group 12 and the left lens barrel laser receiving group 14 are installed on the mounting bracket 32. The bottom of the mounting bracket 32 ​​is sleeved on the top of the mounting chassis 31. The edge of the mounting bracket 32 ​​protrudes upward with three bosses distributed in a 120-degree circle. The adjusting screws 33 are screwed into the bosses. The top of the adjusting screws 33 passes through the bosses and presses on the conical disk at the bottom of the mounting bracket 32. The X-axis and Y-axis positions of the left lens barrel prism group 12 and the left lens barrel laser receiving group 14 are adjusted together by the adjustment screws 33 on the three bosses distributed in a 120-degree circle, so that the laser optical axis can synchronously track the telescope optical axis. Similarly, the position adjustment mechanism 300 in the right lens barrel 200 is similar to the position adjustment mechanism 300 in the left lens barrel 100 and will not be described again here.

[0038] The left-tube prism group and the left-tube laser receiving group are installed in a position adjustment mechanism for integrated adjustment, and the right-tube prism group and the right-tube laser emitting group are installed in another position adjustment mechanism for integrated adjustment. By adjusting the parallelism of the telescope optical axis of the left lens barrel and the right lens barrel, the laser optical axis is made coaxial with the telescope optical axis at the same time, thereby ensuring product quality and simplifying the inspection process.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A binocular distance measuring telescope optical system in which a laser optical axis synchronously tracks a telescope optical axis, comprising a left lens barrel (100) and a right lens barrel (200), wherein: The left lens barrel (100) comprises a left lens barrel objective lens group (11), a left lens barrel prism group (12), a left lens barrel eyepiece group (13) and a left laser receiving group (14); the left lens barrel objective lens group (11), the left lens barrel prism group (12) and the left lens barrel eyepiece group (13) are arranged in sequence along the linear optical axis S1 of the left lens barrel (100) from the object side to the eye side, and the left laser receiving group (14) is arranged on one side of the linear optical axis S1 and between the left lens barrel prism group (12) and the left lens barrel eyepiece group (13); The right lens barrel (200) comprises a right lens barrel objective lens group (21), a right lens barrel prism group (22), a right lens barrel eyepiece group (23) and a right laser emission group (24); the right lens barrel objective lens group (21), the right lens barrel prism group (22) and the right lens barrel eyepiece group (23) are sequentially arranged at intervals from the object side to the eye side along the linear optical axis S2 of the right lens barrel (200); and the right laser emission group (24) is arranged at a position between the right lens barrel prism group (22) and the right lens barrel eyepiece group (23) on one side of the linear optical axis S2; The left tube prism group (12) and the right tube prism group (22) both adopt the same structure, consisting of a beam splitter prism (3), a half pentaprism (4) and a Schmidt roof prism (5), and are characterized by: The left-tube prism group (12) and the left-tube laser receiving group (14) are installed in a position adjustment mechanism for integrated adjustment, and the right-tube prism group (22) and the right-tube laser emitting group (24) are installed in another position adjustment mechanism for integrated adjustment.

2. The binocular distance measuring telescope optical system of claim 1, wherein the laser optical axis synchronously tracks the optical axis of the telescope, characterized in that: A display assembly (25) is arranged on one side of the linear optical axis S2 and between the right barrel prism assembly (22) and the right barrel objective lens assembly (21). The display assembly (25), the right barrel prism assembly (22) and the right barrel laser emission assembly (24) are installed in the same position adjustment mechanism for integrated adjustment.

3. The binocular distance measuring telescope optical system of claim 2, wherein the laser optical axis synchronously tracks the telescope optical axis, characterized in that: The display assembly (25) includes an OLED screen (10a) and a projection lens (10b).

4. The binocular distance measuring telescope optical system of claim 1, 2 or 3, wherein the laser optical axis synchronously tracks the telescope optical axis, characterized in that: The left-tube laser receiving group (14) comprises a laser receiving tube (6) and a receiving lens (7), and the right-tube laser emitting group (24) comprises a laser emitting tube (8) and an emitting lens (9).

5. The binocular distance measuring telescope optical system of claim 3, wherein the laser optical axis synchronously tracks the telescope optical axis, characterized in that: The beam splitter prism (3) is a compensating beam splitter prism, and its optical bonding surface M1 is much smaller than the semi-penta optical surface of the semi-penta prism (4). The optical bonding surface M1 of the beam splitter prism (3) is only used to introduce laser or OLED display light.

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