Optical axis alignment system for optical device and optical axis alignment method for optical device

Abstract

The present invention relates to an optical axis alignment system of an optical device comprising at least one transmitting lens module and at least one receiving lens module, wherein the optical axes of a plurality of lens modules can be aligned or adjusted according to a user's intention, and the optical axes of a plurality of lens modules can be aligned in conjunction or aligned independently. The optical axis alignment system comprises: a target; a collimating lens disposed between the target and the optical device and disposed between the target and the optical device, which converts a target image of a finite distance into an infinite image or an image of a desired finite distance; and a first optical element disposed between the collimating lens and the optical device and having a light transmission function and a light reflection function.and includes a second optical element disposed between the collimating lens and the optical device in parallel with the first optical element and having a light reflection function, wherein the first optical element and the second optical element have either a first arrangement structure or a second arrangement structure so as to align the optical axis of the transmitting lens module and the optical axis of the receiving lens module based on a target image observed by light emitted from the transmitting lens module and light received from the receiving lens module, wherein in the first arrangement structure, the first optical element is disposed in a position facing the transmitting module lens so that light emitted from the transmitting lens module passes through the first optical element and is transmitted to the collimating lens, and the second optical element is disposed in a position facing the receiving module lens so that light transmitted from the collimating lens and reflected by the first optical element is received again by the receiving lens module, and in the second arrangement structure, the second optical element is disposed in a position facing the transmitting lens module so that light emitted from the transmitting lens module passes through the first optical An optical axis alignment system is provided, wherein the first optical element is positioned facing the receiving lens module to reflect light from the second optical element back to the collimating lens, and the light transmitted from the collimating lens is transmitted to the receiving lens module.

Description

Technology Field

[0001] The present invention relates to an optical axis alignment system capable of aligning the optical axis of an optical device comprising a transmitting lens module and a receiving lens module, and a method for aligning the optical axis. Background Technology

[0002] An optical axis alignment system is a system designed to precisely align the optical axis within an optical device; the optical axis refers to the central axis that allows light to pass through ideally within an optical system. Objects aligned in an optical axis alignment system include lenses, mirrors, prisms, optical sensors, and laser-emitting elements.

[0003] The optical axis is aligned to prevent light from deviating from a specific focal point, thereby minimizing errors caused by reflection and refraction within the system. Inaccurate optical axis alignment can lead to light scattering or loss, resulting in reduced energy efficiency and system performance; therefore, optical axis alignment is a critical factor.

[0004] Such optical axis alignment systems perform the role of aligning the optical axes of multiple lenses, but there are problems with aligning the optical axes of multiple lenses. Most existing optical axis alignment systems are optimized for aligning the optical axis of a single lens and are not optimized for alignment between multiple lenses. This is because, in order to align the optical axes of multiple lenses, each lens must be positioned at a different location or angle, but there are technical limitations in precisely adjusting multiple lenses. Although the prior art KR 2038579 B1 discloses a device for evaluating lens performance including multiple lens modules, it does not disclose a method for aligning the optical axes of multiple lens modules.

[0005] Accordingly, an optical axis alignment system capable of aligning the optical axes of multiple lens modules is required. The problem to be solved

[0006] The objective of the present invention is to provide an optical axis alignment system and a method for aligning optical axes, which can align the optical axes of a plurality of lens modules or adjust the optical axes according to the user's intention.

[0007] Another objective of the present invention is to provide an optical axis alignment system and a method for aligning optical axes, wherein the optical axes of a plurality of lens modules are aligned in conjunction or independently. means of solving the problem

[0008] To achieve the above-mentioned purpose, an optical axis alignment system of an optical device comprising at least one transmitting lens module and at least one receiving lens module, wherein the optical axis alignment system comprises: a target; a collimating lens disposed between the target and the optical device and converting a target image of a finite distance into an infinite image or an image of a desired finite distance; and a first optical element disposed between the collimating lens and the optical device and having a light transmission function and a light reflection function. and includes a second optical element disposed between the collimating lens and the optical device in parallel with the first optical element and having a light reflection function, wherein the first optical element and the second optical element have either a first arrangement structure or a second arrangement structure so as to align the optical axis of the transmitting lens module and the optical axis of the receiving lens module based on a target image observed by light emitted from the transmitting lens module and light received from the receiving lens module, wherein in the first arrangement structure, the first optical element is disposed in a position facing the transmitting module lens so that light emitted from the transmitting lens module passes through the first optical element and is transmitted to the collimating lens, and the second optical element is disposed in a position facing the receiving module lens so that light transmitted from the collimating lens and reflected by the first optical element is received again by the receiving lens module, and in the second arrangement structure, the second optical element is disposed in a position facing the transmitting lens module so that light emitted from the transmitting lens module passes through the first optical The present invention provides an optical axis alignment system that allows light to be reflected by an element, wherein the first optical element is positioned facing the receiving lens module, so as to reflect light reflected from the second optical element back to the collimating lens and transmit light transmitted from the collimating lens to the receiving lens module.

[0009] In addition, in the first arrangement structure, the receiving lens module is provided in multiple numbers, and the second optical element is provided in multiple numbers corresponding to the provision of the receiving lens module in multiple numbers, each of the multiple second optical elements is arranged to reflect light toward each of the multiple receiving lens modules, and the first optical element may have the function of reflecting light in both directions toward the multiple second optical elements.

[0010] Additionally, in the first arrangement structure, the receiving lens module is provided in multiple numbers, and the second optical element is provided in multiple numbers corresponding to the provision of multiple receiving lens modules, and each of the multiple second optical elements is arranged to reflect light toward each of the multiple receiving lens modules, and the first optical element is provided in multiple numbers corresponding to the provision of multiple second optical elements, and the multiple first optical elements are arranged in a line so that light emitted from the transmitting lens module passes through the multiple first optical elements and is transmitted to the collimating lens, and each of the multiple first optical elements may be arranged to face in a direction that reflects light toward each of the multiple second optical elements.

[0011] In addition, in the second arrangement structure, the transmitting lens module is provided in multiple numbers, and the second optical element is provided in multiple numbers corresponding to the provision of the transmitting lens module in multiple numbers, each of the multiple second optical elements is arranged to receive light toward each of the multiple transmitting lens modules, and the first optical element may have the function of receiving light in both directions from the multiple second optical elements.

[0012] Additionally, in the second arrangement structure, the transmitting lens module is provided in multiple numbers, and the second optical element is provided in multiple numbers corresponding to the provision of multiple transmitting lens modules, and each of the multiple second optical elements is arranged to receive light toward each of the multiple transmitting lens modules, and the first optical element is provided in multiple numbers corresponding to the provision of multiple second optical elements, and the multiple first optical elements are arranged in a line to reflect light reflected by the multiple second optical elements and transmit it to the collimating lens, and each of the multiple first optical elements can be arranged to transmit light that has passed through the collimating lens toward the receiving lens module.

[0013] In addition, to achieve the above-mentioned purpose, an optical axis alignment system of an optical device comprising at least one transmitting lens module and at least one receiving lens module, wherein the optical axis alignment system comprises: a target; a collimating lens disposed between the target and the optical device, which converts a target image of a finite distance into an infinite image or an image of a desired finite distance; The present invention provides an optical axis alignment system comprising a master module having a first arrangement structure in the presence of an optical element having a light transmission function and a light reflection function, or a second arrangement structure without said optical element, wherein in the first arrangement structure, the optical element is positioned between the collimating lens and the optical device to transmit light transmitted from the collimating lens to be received by the receiving lens module and to reflect light to be received by the master module, and in the second arrangement structure, the master module is positioned on the opposite side of the collimating lens with respect to the target to observe the target image, and in an initial state, the receiving lens module is positioned to receive light transmitted from the collimating lens so that the optical axis of the receiving lens module is aligned based on the target image observed by the master module, and after the optical axis alignment of the receiving lens module, a stage that supports and movably forms the transmitting lens module and the receiving lens module so that the optical axis of the transmitting lens module is aligned based on the target image observed by the master module moves the transmitting lens module to the position of the receiving lens module.

[0014] In addition, to achieve the above-mentioned purpose, an optical axis alignment system of an optical device comprising at least one transmitting lens module and at least one receiving lens module is provided, wherein the optical axis alignment system comprises: a target; a collimating lens disposed between the target and the optical device and converting a target image of a finite distance into an infinite image or an image of a desired finite distance; and a first optical element and a second optical element having a light reflection function to align the optical axis of the transmitting lens module after aligning the optical axis of the receiving lens module based on the target image observed by light received by the receiving lens module through the collimating lens, wherein the first optical element is disposed in a position facing the transmitting lens module so that light emitted from the transmitting lens module is reflected to the second optical element, and the second optical element is disposed in a position facing the receiving lens module so that the light reflected from the first optical element is reflected back to the receiving lens module.

[0015] Additionally, the transmitting lens module is provided in multiple numbers, and the first optical element is provided in multiple numbers corresponding to the provision of multiple transmitting lens modules, and each of the multiple first optical elements is arranged to face each of the multiple transmitting lens modules, and the second optical element can reflect light reflected from the multiple first optical elements so as to be received by the receiving lens module.

[0016] In addition, to achieve the above-mentioned purpose, a method for aligning the optical axis of an optical device comprising at least one transmitting lens module and at least one receiving lens module using an optical axis alignment system comprises: a target; a collimating lens that converts a target image of a finite distance into an infinite image or an image of a desired finite distance; a first optical element having a light transmission function and a light reflection function; and a second optical element having a light reflection function, wherein the optical axis alignment system comprises the step of arranging the optical axis alignment system in a first arrangement structure or a second arrangement structure; a-1) Herein, in the first arrangement structure, the first optical element and the second optical element are arranged side by side between the collimating lens and the optical device, the transmitting lens module is arranged in a position facing the first optical element, and the receiving lens module is arranged in a position facing the second optical element to form the structure; a-2) In the second arrangement structure, the first optical element and the second optical element are arranged side by side between the collimating lens and the optical device, the transmitting lens module is arranged in a position facing the second optical element, and the receiving lens module is arranged in a position facing the first optical element to form the structure; b) A step of aligning the optical axis of the receiving lens module based on a target image detected by the receiving lens module; and b-1) where in the first arrangement structure, light transmitted from the collimating is reflected by the first optical element and then reflected again by the second optical element so that the receiving lens module detects the target image, and b-2) in the second arrangement structure, light transmitted from the collimating passes through the first optical element and then the receiving lens module detects the target image, and c) a step of aligning the optical axis of the transmitting lens module based on the target image generated by the light emitted from the transmitting lens module and observed by the receiving lens module;A method for aligning the optical axis of an optical device may be provided, comprising: a first arrangement structure in which light emitted from the transmitting lens module passes through the first optical element and then through the collimating lens toward the target, resulting in the generation of the target image, and the receiving lens module detects the target image in the same manner as in step b-1); and a second arrangement structure in which light emitted from the transmitting lens module is reflected by the second optical element, then reflects back by the first optical element, passes through the collimating lens toward the target, resulting in the generation of the target image, and the receiving lens module detects the target image in the same manner as in step b-2).

[0017] In addition, to achieve the above-mentioned purpose, a method for aligning the optical axes of an optical device comprising at least one transmitting lens module and at least one receiving lens module using an optical axis alignment system comprises: a target; a collimating lens that converts a target image of finite distance into an infinite image, or converts a target image of finite distance into an infinite image or a desired image of finite distance; and a master module that receives the target image and supports aligning the optical axes of the transmitting lens module and the receiving lens module, and a) a step of arranging the optical axis alignment system in a first arrangement structure or a second arrangement structure and adjusting a stage that supports and movably forms the transmitting lens module and the receiving lens module so that the receiving lens module receives light transmitted from the collimating lens. a-1) In the first arrangement structure, the optical axis alignment system further includes an optical element having a light transmission function and a light reflection function, and in the first arrangement structure, the optical element is positioned between the collimating lens and the optical device, and the master module is positioned to receive light that is transmitted from the collimating lens and then reflected by the optical element, and a-2) In the second arrangement structure, the master module is positioned on the opposite side of the collimating lens with respect to the target and is positioned to receive a target image, and b) a step of aligning the optical axis of the receiving lens module based on the target image detected by the receiving lens module; b-1) In the first arrangement structure, light transmitted to the collimating lens is transmitted to the receiving lens module after passing through the optical element and is reflected by the optical element and directed toward the master module, and b-2) In the second arrangement structure, light emitted from the target is directed toward the receiving lens module and the master module, respectively, and c) a step of adjusting the stage to move the transmitting lens module to the position of the receiving lens module;and d) a step of aligning the optical axis of the transmitting lens module based on the target image observed by the master module; wherein, in the first arrangement structure, light emitted from the transmitting lens module is transmitted by the optical element and passes through the collimating lens to be directed toward the target, resulting in the generation of the target image, and the target image is transmitted to the master module in the same manner as light is directed toward the master module by reflection by the optical element in step b-1); and in the second arrangement structure, light emitted from the transmitting lens module passes through the collimating lens to be directed toward the target, resulting in the generation of the target image, and the target image is transmitted to the master module.

[0018] In addition, to achieve the above-mentioned purpose, a method for aligning the optical axes of an optical device comprising at least one transmitting lens module and at least one receiving lens module using an optical axis alignment system comprises: a target; a collimating lens that converts a target image of a finite distance into an infinite image or an image of a desired finite distance; and a master module that receives the target image and supports aligning the optical axes of the transmitting lens module and the receiving lens module. The method for aligning the optical axes comprises: a) arranging the optical axis alignment system in a first arrangement structure or a second arrangement structure and adjusting a stage that supports and movably forms the transmitting lens module and the receiving lens module so that light emitted from the transmitting lens module passes through the collimating lens and is transmitted to the target. a-1) In the first arrangement structure, the optical axis alignment system further includes an optical element having a light transmission function and a light reflection function, and in the first arrangement structure, the optical element is positioned between the collimating lens and the optical device, and the master module is positioned to receive light reflected by the optical element after being transmitted from the collimating lens, and a-2) In the second arrangement structure, the master module is positioned on the opposite side of the collimating lens with respect to the target to receive a target image, and b) a step of aligning the optical axis of the transmitting lens module based on the target image detected by the master module;b-1) In the first arrangement structure, light emitted from the transmitting lens module is transmitted by the optical element and passes through the collimating lens to be directed toward the target, resulting in the generation of the target image, and light transmitted from the collimating lens is reflected by the optical element and directed toward the master module; b-2) In the second arrangement structure, light emitted from the transmitting lens module passes through the collimating lens to be directed toward the target, resulting in the generation of the target image, and the target image is transmitted to the master module; c) a step of adjusting the stage to move the receiving lens module to the position of the transmitting lens module; and d) a step of aligning the optical axis of the receiving lens module based on a target image observed at the receiving lens module; wherein d-1) in the first arrangement structure, light transmitted to the collimating lens is transmitted to the receiving lens module after passing through the optical element and is reflected by the optical element and directed toward the master module, and d-2) in the second arrangement structure, light emitted from the target is directed toward the receiving lens module and the master module, respectively. A method for aligning the optical axis of an optical device may be provided.

[0019] In addition, to achieve the above-mentioned purpose, a method for aligning the optical axis of an optical device comprising at least one transmitting lens module and at least one receiving lens module using an optical axis alignment system comprises: a target; a collimating lens that converts a target image of finite distance into an infinite image or an image of a desired finite distance; and at least one first optical element and at least one second optical element having a light reflection function, wherein the optical axis of the receiving lens module is aligned based on a target image observed by light received by the receiving lens module through the collimating lens; and the step of arranging the first optical element between the collimating lens and the transmitting lens module so as to face the transmitting lens module, and arranging the second optical element between the collimating lens and the receiving lens module so as to face the receiving lens module. A method for aligning the optical axis of an optical axis alignment device can be provided, comprising the step of aligning the optical axis of a transmitting lens module based on a target image observed by light emitted from the transmitting lens module, reflected by the first optical element, and then reflected again by the second optical element and observed by the receiving lens module. Effects of the invention

[0020] The effects of the present invention obtained through the above-described solution are as follows.

[0021] The optical axis alignment system and the method for aligning the optical axis proposed in the present invention can minimize light scattering or dispersion by aligning the optical axis of the transmitting lens module with the optical axis of the receiving lens module.

[0022] In addition, the optical axis alignment system and the method for aligning optical axes proposed in the present invention can align the optical axis of one of the transmitting lens module and the receiving lens module by linking it to the optical axis of either of the transmitting lens module and the receiving lens module, or can align the optical axes independently without linking them to the optical axis of either of the transmitting lens module and the receiving lens module by using a master module. Brief explanation of the drawing

[0023] FIG. 1 is a conceptual diagram showing a first embodiment of the optical axis alignment system proposed in the present invention and an optical device including a transmitting lens module and a receiving lens module. FIGS. 2a and 2b are conceptual diagrams showing a first embodiment of the optical axis alignment system proposed in the present invention and an optical device including a transmitting lens module and a plurality of receiving lens modules. FIGS. 3a and 3b are conceptual diagrams showing a second embodiment of an optical axis alignment system including an optical element and an optical device including a transmitting lens module and a receiving lens module. FIGS. 4a and 4b are conceptual diagrams showing a second embodiment of an optical axis alignment system and an optical device including a transmitting lens module and a receiving lens module. FIGS. 5a and 5b are conceptual diagrams showing a third embodiment of the optical axis alignment system proposed in the present invention and an optical device including a transmitting lens module and a receiving lens module. FIG. 6 is a flowchart illustrating a method for aligning an optical axis using a first embodiment of the optical axis alignment system proposed in the present invention. FIG. 7 is a flowchart illustrating a method for aligning an optical axis using a second embodiment of the optical axis alignment system proposed in the present invention. FIG. 8 is a flowchart illustrating a method for aligning an optical axis using a third embodiment of the optical axis alignment system proposed in the present invention. Specific details for implementing the invention

[0024] Hereinafter, an optical axis alignment system for an optical device and a method for aligning the optical axis of an optical device related to the present invention will be described in more detail with reference to the drawings.

[0025] In this specification, identical or similar reference numbers are assigned to identical or similar components even in different embodiments, and redundant descriptions thereof are omitted.

[0026] In describing the embodiments disclosed in this specification, if it is determined that a detailed description of related prior art could obscure the essence of the embodiments disclosed in this specification, such detailed description is omitted.

[0027] The attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification, and the technical concept disclosed in this specification is not limited by the attached drawings; it should be understood that all modifications, equivalents, and substitutions included within the concept and technical scope of the present invention are included.

[0028] In the following description, singular expressions include plural expressions unless the context clearly indicates otherwise.

[0029] In this application, terms such as “comprising” or “having” are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0030] Hereinafter, the optical axis alignment system of the optical device proposed in the present invention will be described.

[0031] In the optical axis alignment system of the optical device proposed in the present invention, the optical device may include at least one transmitting lens module (10) and at least one receiving lens module (20). In the present invention, the transmitting lens module (10) and the receiving lens module (20) may be arranged side by side or spaced apart from each other.

[0032] An optical device is a device that performs functions or transmits information by utilizing the properties of light. Optical devices are designed using characteristics such as reflection, refraction, diffraction, interference, and polarization of light, and can be used in everything from everyday life to advanced science and technology fields. Examples of optical devices include laser devices, cameras, and optical communication devices.

[0033] The transmission lens module (10) is a lens module that works in conjunction with a light source to emit light in a specific direction. The transmission lens module (10) can help the receiving lens module receive a signal at an accurate location by adjusting the angle and intensity of the light, and can adjust the distance to the receiving lens by setting the light to be transmitted over a certain distance.

[0034] Meanwhile, the reception lens module (20) is a lens module that collects or reflects light emitted from the transmission lens module (10) and transmits it to a light sensor. The reception lens module (20) can adjust the path of light to accurately capture the signal and adjust the intensity of light so that the received signal is transmitted in an optimal state.

[0035] The optical axis alignment system proposed in the present invention can be divided into first to third embodiments.

[0036] The first embodiment is an optical axis alignment system (100) in which a plurality of lens module optical axes are aligned in conjunction with each other, the second embodiment is an optical axis alignment system (200) in which a plurality of lens module optical axes are independently aligned by a master module (220), and the third embodiment is an optical axis alignment system (300) in which the optical axis of a receiving lens module (20) is aligned by a collimating lens (310) and then the optical axis of a transmitting lens module (10) is aligned.

[0037] Hereinafter, a first embodiment (100) of an optical axis alignment system will be described.

[0038] FIG. 1 is a conceptual diagram showing an optical device including a first embodiment (100) of an optical axis alignment system proposed in the present invention, a transmitting lens module (10), and a receiving lens module (20).

[0039] Generally, the first embodiment (100) can be represented as in FIG. 1 and may include a target (T), a collimating lens (110), at least one first optical element (120) and at least one second optical element (130).

[0040] The target (T) may refer to an object designed to be identified through multiple lenses, and light may be emitted directly from the target (T) or emitted by passing through the target (T) from an external light source.

[0041] A collimating lens (110) is a lens that plays an important role in an optical system and is used to convert light into collimated light. Here, collimated light refers to light in which rays are parallel to each other and travel in the same direction without an angle of incidence or diffusion. The collimating lens (110) can enable efficient light transmission by making rays travel parallel to each other.

[0042] A collimating lens (110) can be placed between a target (T) and an optical device, and through this placement structure, the collimating lens (110) can convert a target (T) image of a finite distance into an infinite image or an image of a desired finite distance.

[0043] The first optical element (120) may be positioned between the collimating lens (110) and the optical device. Accordingly, the distance from the first optical element (120) to the target (T) may be greater than the distance from the first optical element (120) to the collimating lens (110).

[0044] Additionally, the first optical element (120) may have a light transmission function and a light reflection function. The first optical element (120) may transmit light emitted from or transmitted through the target (T) to the receiving lens module (20), and may reflect light emitted from or transmitted through the target (T) to the second optical element (130). Here, the angle at which the first optical element (120) reflects light may be a right angle as shown in FIG. 1, but is not necessarily limited thereto.

[0045] At this time, the first optical element (120) may be either a cube prism or a beam splitter.

[0046] A cube prism is an optical element made by precisely combining two triangular prisms to form a cube. Light can be partially reflected and partially transmitted by a partial reflective coating present on the diagonal face of the cube prism.

[0047] A beam splitter is an optical device that splits incident light into reflection and transmission. The surface of a beam splitter can reflect some light and transmit the rest through a combination of reflective and transmissive coatings, and the ratio of reflection to transmission can be determined by the ratio of light intensity. In other words, the ratio of reflection to transmission is not fixed at 50:50 but can vary depending on the ratio of light intensity.

[0048] Meanwhile, the second optical element (130) can be positioned between the collimating lens (110) and the optical device, just like the first optical element (120), and can be positioned parallel to the first optical element (120). Accordingly, the distance from the second optical element (130) to the target (T) can be greater than the distance from the second optical element (130) to the collimating lens (110).

[0049] Additionally, the second optical element (130) may have a light reflection function. At this time, the second optical element (130) may have both a light reflection function and a light transmission function, or it may have only a light reflection function. Here, the angle at which the second optical element (130) reflects light may be a right angle, but it is not necessarily limited thereto.

[0050] At this time, the second optical element (130) may be either a beam splitter or a mirror.

[0051] Mirrors can control the optical path by reflecting incident light in a specific direction, and can minimize light loss by reflecting more than 90% of the light.

[0052] The first optical element (120) and the second optical element (130) may have either a first arrangement structure or a second arrangement structure as described below. The first embodiment (100) illustrated in FIG. 1 may correspond to the first arrangement structure mentioned below. The following structure may be arranged based on the target (T) image observed by the light emitted from the transmitting lens module (10) and the light received from the receiving lens module (20).

[0053] In the first arrangement structure, the first optical element (120) may be positioned facing the transmitting lens module (10). Here, the facing position may refer to a position capable of receiving light emitted from the transmitting lens module (10). Through this arrangement, the first optical element (120) can transmit light emitted from the transmitting lens module (10) to the collimating lens (110) by passing through the first optical element (120), and the light passing through the collimating lens (110) can be directed toward the target (T). Additionally, the first optical element (120) can reflect the light transmitted from the collimating lens (110) and transmit it to the second optical element (130).

[0054] The second optical element (130) may be positioned facing the receiving lens module (20). Here, the facing position may refer to a position where light reflected from the first optical element (120) can be reflected toward the receiving lens module (20). Through this arrangement, the first optical element (120) can reflect light transmitted from the collimating lens (110) and transmit it to the second optical element (130). Here, the light transmitted from the collimating lens (110) may refer to light emitted from the target (T) or light passing through the target (T) from an external light source. The second optical element (130), positioned facing the receiving lens module (20), can reflect the light reflected by the first optical element (120) again so that it is received by the receiving lens module (20).

[0055] Meanwhile, in the second arrangement structure, the second optical element (130) may be positioned facing the transmitting lens module (10). Unlike the first arrangement structure, the second arrangement structure may be a structure in which the positions of the transmitting lens module (10) and the receiving lens module (20) are reversed. Through this arrangement, the second optical element (130) can reflect light emitted from the transmitting lens module (10) and transmit it to the first optical element (120).

[0056] The first optical element (120) may be positioned facing the receiving lens module (20). Here, the facing position may refer to a position capable of transmitting light reflected from the second optical element (130) to the receiving lens module (20). Through this arrangement, the first optical element (120) can cause the light reflected from the second optical element (130) to be reflected to the collimating lens (110). Additionally, the first optical element (120) can transmit the light transmitted from the collimating lens (110) to be received by the receiving lens module (20). Here, the light transmitted from the collimating lens (110) may be emitted directly from the target (T) as described above, or emitted by transmitting through the target (T) from an external light source.

[0057] FIGS. 2a and 2b are conceptual diagrams showing a first embodiment of the optical axis alignment system proposed in the present invention and an optical device including a transmitting lens module and a plurality of receiving lens modules.

[0058] The first embodiment (100) may include a plurality of receiving lens modules (20a, 20b) in a first arrangement structure as shown in FIGS. 2a and 2b, and the second optical element (130) may be provided in a plurality corresponding to the plurality of receiving lens modules (20). This arrangement structure may be divided into two types depending on the function and number of the first optical element (120). One type may include a first optical element (120) capable of reflecting light in both directions, and the other type may include a plurality of first optical elements (120).

[0059] First, a type including a first optical element (120) capable of reflecting light in both directions is described.

[0060] Referring to FIG. 2a, each of the plurality of second optical elements (130a, 130b) may be arranged to reflect light reflected from the first optical element toward each of the plurality of receiving lens modules (20a, 20b). One of the receiving lens modules (20a) may face one of the second optical elements (130a), and another of the receiving lens modules (20b) may face the other of the second optical elements (130b). Facing may be to reflect light reflected from the first optical element (120) toward the receiving lens modules (20a, 20b) as described above. The angle at which the plurality of second optical elements (130a, 130b) reflect light may be an acute angle as shown in FIG. 2a, but is not necessarily limited thereto.

[0061] Also, the first optical element (120) may have the function of reflecting light in both directions toward a plurality of second optical elements (130a, 130b). Here, the angle at which the first optical element (120) reflects light may be a right angle as shown in FIG. 2a, but is not necessarily limited thereto.

[0062] Next, a type including a plurality of first optical elements (120) is described.

[0063] Referring to FIG. 2b, each of the plurality of second optical elements (130a, 130b) may be arranged to reflect light toward each of the plurality of receiving lens modules (20a, 20b). One of the receiving lens modules (20a) may face one of the second optical elements (130a), and another of the receiving lens modules (20b) may face the other of the second optical elements (130b). Here, facing may mean receiving light reflected from the second optical elements.

[0064] Also, the first optical element (120) may be provided in multiple numbers in correspondence with the provision of multiple second optical elements (130). Referring again to FIG. 2b, it can be seen that multiple first optical elements (120a, 120b) are provided in correspondence with multiple second optical elements (130a, 130b).

[0065] These multiple first optical elements (120a, 120b) can be arranged in a row so that light emitted from the transmitting lens module (10) passes through the multiple first optical elements (120a, 120b) and is transmitted to the collimating lens (110).

[0066] Additionally, a plurality of the first optical elements (120a, 120b) may be arranged to be oriented toward each of the plurality of the second optical elements (130a, 130b) in a direction that reflects light. Here, the reflected light may be light emitted from the target (T), light transmitted through the target (T), or light emitted from the transmitting lens module (10). As shown in FIG. 2b, one of the first optical elements (120a) may be made to reflect light toward one of the second optical elements (130a), and another of the first optical elements (120b) may be made to reflect light toward another of the second optical elements (130b). Here, "oriented toward" may mean that the light reflected from each of the first optical elements (120a, 120b) is transmitted to each of the second optical elements (130a, 130b). The angle at which each first optical element (120a, 120b) reflects light may be a right angle as illustrated in FIG. 2b, but is not limited thereto. Also, light directed toward a plurality of second optical elements (130a, 130b) may be reflected again and transmitted to a plurality of receiving lens modules (20a, 20b).

[0067] Meanwhile, the first embodiment (100) may include a plurality of transmitting lens modules (10) in the second arrangement structure, and the second optical element (130) may be provided in a plurality corresponding to the plurality of transmitting lens modules (10). As described above, this arrangement structure may be divided into two types depending on the function and number of the first optical element (120). One type may include a first optical element (120) capable of reflecting light in both directions, and the other type may include a plurality of first optical elements (120).

[0068] First, a type including a first optical element (120) capable of reflecting light in both directions is described.

[0069] Each of the plurality of second optical elements (130a, 130b) may be positioned to receive light toward each of the plurality of transmitting lens modules (10). One of the transmitting lens modules (10) may face one of the second optical elements (130a), and another of the transmitting lens modules (10) may face another of the second optical elements (130b). Facing may be a position where the plurality of second optical elements (130) can receive light emitted from the transmitting lens modules (10).

[0070] Also, the first optical element (120) can receive light in both directions from a plurality of second optical elements (130a, 130b). Here, the angle at which the plurality of second optical elements (130a, 130b) reflect the light received from the transmitting lens module (10) to the first optical element (120) may be an acute angle as shown in FIG. 2a, but is not necessarily limited thereto.

[0071] Next, a type including a plurality of first optical elements (120) is described.

[0072] Each of the plurality of second optical elements (130a, 130b) may be positioned to receive light toward each of the plurality of transmitting lens modules (10). One of the transmitting lens modules (10) may face one of the second optical elements (130a), and another of the transmitting lens modules (10) may face another of the second optical elements (130b). Facing may be a position where the plurality of second optical elements (130) can receive light emitted from the transmitting lens modules (10).

[0073] And the first optical element (120) may be provided in multiple numbers in correspondence with the provision of multiple second optical elements (130). As shown in FIG. 2b, multiple first optical elements (120a, 120b) may be provided in correspondence with multiple second optical elements (130a, 130b).

[0074] A plurality of first optical elements (120a, 120b) can reflect light emitted from a plurality of transmitting lens modules (20) and reflected by a plurality of second optical elements (130a, 130b) and transmit it to a collimating lens (110) so that it is directed toward a target (T). Then, light emitted from the target (T) can pass through the collimating lens (110), and then pass through a plurality of first optical elements (120a, 120b) and be directed toward a receiving lens module (20).

[0075] In this way, in the first embodiment (100), the optical axis of the transmitting lens module (10) and the optical axis of the receiving lens module (20) can be aligned with each other.

[0076] Next, a second embodiment (200) of the optical axis alignment system will be described.

[0077] The second embodiment (200) may include a target (T), a collimating lens (210), and a master module (220).

[0078] The target (T) may refer to an object designed to be identified through multiple lenses, and light may be emitted directly from the target (T) or emitted by passing through the target (T) from an external light source.

[0079] The collimating lens (210) can enable efficient light transmission by making the rays travel parallel to each other as described above, and can convert a target (T) image of a finite distance into an infinite image or a finite image of a desired distance.

[0080] The master module (220) is a component that coordinates and controls the overall performance of the optical system. The master module (220) can perform the role of collecting and processing optical signals to produce accurate results, and can perform roles such as optical axis alignment, focus correction, and lens position adjustment within the optical system.

[0081] The second embodiment (200) can be divided into a first arrangement structure and a second arrangement structure as follows, depending on the presence or absence of an optical element (230).

[0082] First, the first arrangement structure of the second embodiment (200) including an optical element will be described.

[0083] FIGS. 3a and 3b are conceptual diagrams showing a second embodiment (200) of an optical axis alignment system including an optical element and an optical device including a transmitting lens module (10) and a receiving lens module (20).

[0084] Referring to FIGS. 3a and 3b, the first arrangement structure is a structure that appears in the presence of an optical element (230), the optical element (230) may be placed between a collimating lens (210) and an optical device. Accordingly, the distance from the optical element (230) to the target (T) may be greater than the distance from the optical element (230) to the target (T).

[0085] Additionally, the optical element (230) may have a light transmission function and a light reflection function. The optical element (230) may transmit light transmitted from the collimating lens (210) to be received by the receiving lens module (20), and may reflect light transmitted through the collimating lens (210) to be received by the master module (220). Here, the light transmitted from the collimating lens (210) may be emitted directly from the target (T) or emitted by passing through the target (T) to an external light source. The angle of reflection by the optical element (230) may be a right angle as shown in FIG. 3a, but is not necessarily limited thereto. Here, the optical element (230) may be either a cube prism or a beam splitter.

[0086] Referring again to FIG. 3a, the receiving lens module (20) can be positioned in an initial state to receive light transmitted from the collimating lens (210). The light transmitted from the collimating lens (210) can pass through the optical element (230) and be received by the receiving lens module (20). The reason for positioning the receiving lens module (20) as above is to ensure that the optical axis of the receiving lens module (20) is aligned based on the target (T) image observed by the master module (220). At this time, the transmitting lens module (10) is positioned spaced apart from the receiving lens module (20), and the transmitting lens module (10) and the receiving lens module (20) are fixed to a stage (S). Here, the stage (S) can be formed to support the transmitting lens module (10) and the receiving lens module (20) and to be movable.

[0087] Referring again to FIG. 3b, after the optical axis alignment of the receiving lens module (20) is completed, the transmitting lens module (10) can be moved to the position of the receiving lens module (20) by the stage (S). The reason for moving the position of the transmitting lens module (10) is to ensure that the optical axis of the transmitting lens module (10) is aligned based on the target (T) image observed by the master module (220) after the optical axis alignment of the receiving lens module (20).

[0088] Next, a second arrangement structure of a second embodiment (200) that does not include an optical element will be described.

[0089] FIGS. 4a and 4b are conceptual diagrams showing a second embodiment (200) of an optical axis alignment system and an optical device including a transmitting lens module (10) and a receiving lens module (20).

[0090] Referring to FIGS. 4a and 4b, the second arrangement structure of the second embodiment (200) is an arrangement structure that does not include an optical element (230), and the master module (220) is positioned on the opposite side of the collimating lens (210) with respect to the target (T) so as to observe the image of the target (T). Therefore, there is no separate equipment between the collimating lens (210), the transmitting lens module (10), and the receiving lens module (20).

[0091] Referring again to FIG. 4a, the receiving lens module (20) can be positioned in an initial state to receive light transmitted from the collimating lens (210). The light transmitted from the collimating lens (210) can be emitted directly from the target (T), or transmitted through the target (T) to an external light source and emitted, and the light transmitted from the collimating lens (210) can be directed toward the receiving lens module (20). The reason for positioning the receiving lens module (20) as above is to ensure that the optical axis of the receiving lens module (20) is aligned based on the image of the target (T) observed by the master module (220).

[0092] Referring again to FIG. 4b, after the optical axis alignment of the receiving lens module (20) is completed, the transmitting lens module (10) can be moved to the position of the receiving lens module (20) by the stage (S). The stage (S) can be formed to support and move the transmitting lens module (10) and the receiving lens module (20) as described above. The reason for moving the position of the transmitting lens module (10) is to ensure that the optical axis of the transmitting lens module (10) is aligned based on the target (T) image observed by the master module (220) after the optical axis alignment of the receiving lens module (20).

[0093] Thus, in the second type optical axis alignment system (200), the optical axis of the transmitting lens module (10) and the optical axis of the receiving lens module (20) can be aligned independently of each other. Being able to align independently means that either the transmitting lens module (10) or the receiving lens module (20) is aligned with the optical axis first, and then the other is aligned with the optical axis.

[0094] Hereinafter, a third embodiment (300) of the optical axis alignment system will be described.

[0095] FIGS. 5a and 5b are conceptual diagrams showing a third embodiment (300) of the optical axis alignment system proposed in the present invention and an optical device including a transmitting lens module (10) and a receiving lens module (20).

[0096] Referring to FIGS. 5a and 5b, the third embodiment (300) may include a target (T), a collimating lens (310), at least one first optical element (320), and at least one second optical element (330).

[0097] The target (T) may refer to an object designed to be identified through multiple lenses, and light may be emitted directly from the target (T) or emitted by passing through the target (T) from an external light source.

[0098] A collimating lens (310) can be placed between the target (T) and the optical device. Additionally, the collimating lens (310) can enable efficient light transmission by causing light rays to travel parallel to each other as described above, and can convert a finite distance image of the target (T) into an infinite image or an image of a desired finite distance.

[0099] The first optical element (320) and the second optical element (330) can be configured to align the optical axis of the transmitting lens module (10) after aligning the optical axis of the receiving lens module (20). The optical axis alignment can be based on a target (T) image observed by light received by the receiving lens module (20) through the collimating lens (310), and the light received by the receiving lens module (20) may be light under conditions where the first optical element (320) and the second optical element (330) are absent.

[0100] The first optical element (320) and the second optical element (330) may have a light reflection function. Here, the first optical element (320) and the second optical element (330) may perform the function of reflecting light without transmitting it, and may be either a beam splitter or a mirror. In addition, the angle at which the first optical element (320) and the second optical element (330) reflect light may be a right angle as shown in FIG. 5b, but is not necessarily limited thereto.

[0101] Among them, the first optical element (320) may be positioned facing the transmitting lens module (10) and may be configured to reflect light emitted from the transmitting lens module (10) to the second optical element (330). Here, facing may mean receiving light emitted from the transmitting lens module (10).

[0102] Meanwhile, the second optical element (330) may be positioned facing the receiving lens module (20), and the light reflected from the first optical element (320) may be reflected back to the receiving lens module (20). Here, facing may mean that the receiving lens module (20) receives the light that is reflected from the first optical element (320) and then reflected back by the second optical element (330). As a result, the light can be received by the receiving lens module (20) through two reflections.

[0103] Additionally, the third embodiment (300) may be provided with a plurality of transmitting lens modules (10), and the first optical element (320) may be provided in a plurality corresponding to the plurality of transmitting lens modules (10).

[0104] In the third embodiment (300), each of the plurality of first optical elements (320) may be arranged to face each of the plurality of transmission lens modules (10). Here, facing may mean that each of the plurality of first optical elements (320) receives light emitted from each of the plurality of transmission lens modules (10). Through this, each of the plurality of first optical elements (320) may reflect light emitted from the plurality of transmission lens modules (10) and transmit it to the second optical element (330).

[0105] And, the second optical element (330) can reflect light reflected from each of the plurality of first optical elements (320) and receive it through the receiving lens module (10).

[0106] In this way, through reflection by the first optical element (320) and reflection by the second optical element (330), the optical axis of the transmitting lens module (10) and the optical axis of the receiving lens module (20) in the third embodiment (300) can be aligned with each other.

[0107] Hereinafter, a method for aligning the optical axis of an optical device proposed in the present invention will be described.

[0108] First, a method for aligning the optical axis using the first embodiment (100) of the optical axis alignment system will be described.

[0109] The first embodiment (100) may include a target (T), a collimating lens (110), at least one first optical element (120), and at least one second optical element (130).

[0110] The target (T) may refer to an object designed to be identified through multiple lenses, and light may be emitted directly from the target (T) or emitted by passing through the target (T) from an external light source.

[0111] The collimating lens (110) can enable efficient light transmission by making the rays travel parallel to each other as described above, and can convert a target (T) image of a finite distance into an infinite image or an image of a desired finite distance.

[0112] The first optical element (120) may have a light transmission function and a light reflection function. Here, the angle at which the first optical element (120) reflects light may be a right angle, but is not necessarily limited thereto.

[0113] The second optical element (130) may have a light reflection function. At this time, the second optical element (130) may have both a light reflection function and a light transmission function, or it may have only a light reflection function. Here, the angle at which the second optical element (130) reflects light may be a right angle, but is not necessarily limited thereto.

[0114] FIG. 6 is a flowchart showing a method for aligning an optical axis using a first embodiment (100) of the optical axis alignment system proposed in the present invention.

[0115] Referring to FIG. 6, a method for aligning the optical axis using the first embodiment (100) may begin with a step (S110) of arranging in a first arrangement structure or a second arrangement structure.

[0116] In the first arrangement structure, a first optical element (120) and a second optical element (130) may be arranged side by side between the collimating lens (110) and the optical device. Additionally, the transmitting lens module (10) may be positioned facing the first optical element (120), where the facing position may mean a position where light emitted from the transmitting lens module (10) is directed toward the first optical element (120). Meanwhile, the receiving lens module (20) may be positioned facing the second optical element (130), where the facing position may mean a position where light reflected from the first optical element (120) is reflected again by the second optical element (130) so that the receiving lens module (20) receives the light, and the light received by the first optical element (120) may be light emitted from the target (T) and passing through the collimating lens (110).

[0117] Meanwhile, in the second arrangement structure, similar to the first arrangement structure, a first optical element (120) and a second optical element (130) may be arranged side by side between the collimating lens (110) and the optical device. Additionally, the transmitting lens module (10) is positioned facing the second optical element (130), and the position facing may mean a position where light emitted from the transmitting lens module (10) is directed toward the second optical element (130). The receiving lens module (20) may be positioned facing the first optical element (120), and the position facing may mean a position where the receiving lens module (20) receives light by transmitting the light that has passed through the collimating lens (110) after being emitted from the target (T).

[0118] Unlike the first arrangement structure, the second arrangement structure may be a structure in which the positions of the transmitting lens module (10) and the receiving lens module (20) are swapped.

[0119] After the step (S110) of arranging in a first arrangement structure or a second arrangement structure, a step (S120) of aligning the optical axis of the receiving lens module may be performed. The alignment of the optical axis of the receiving lens module (20) may be performed based on a target image detected by the receiving lens module (20).

[0120] In the first arrangement structure, light transmitted from the collimating lens (110) can be reflected by the first optical element (120) and then reflected again by the second optical element (130) to be directed toward the receiving lens module (20). Here, the light transmitted from the collimating lens (110) may refer to light emitted from the target (T) or light passing through the target (T) from an external light source.

[0121] In the second arrangement structure, light transmitted from the collimating lens (110) can pass through the first optical element (120) and then be directed toward the receiving lens module (20). Here, the light transmitted from the collimating lens (110) may refer to light emitted from the target (T) or light passing through the target (T) from an external light source.

[0122] With the transmission of light from the first and second arrangement structures, the receiving lens module (20) receives the transmitted light to detect a target image and can align the optical axis of the receiving lens module (20) based on the target image.

[0123] After the step (S120) of aligning the optical axis of the receiving lens module (20), the process may be concluded with the step (S130) of aligning the optical axis of the transmitting lens module (10). The alignment of the optical axis of the transmitting lens module (20) may be based on a target image generated by light emitted from the transmitting lens module (10) and observed by the receiving lens module (20).

[0124] In the first arrangement structure, the target image can be generated as a result of light emitted from the transmitting lens module (10) passing through the first optical element (120) and then passing through the collimating lens (110) toward the target (T). Then, in the step (S120) of aligning the optical axis of the receiving lens module, the light is transmitted to the receiving lens module (20) in the same manner as the light transmitted through the collimating lens (110) toward the receiving lens module (20), and the receiving lens module (20) can detect the target image as a result of receiving the light.

[0125] In the second arrangement structure, the target image can be generated as a result of light emitted from the transmitting lens module (10) being reflected by the second optical element (130), then reflected again by the first optical element (120), passing through the collimating lens (110), and heading toward the target (T). Then, in the step (S120) of aligning the optical axis of the receiving lens module, the light is transmitted to the receiving lens module (20) in the same manner as the light transmitted through the collimating lens (110) heads toward the receiving lens module (20), and the receiving lens module (20) can detect the target image as a result of receiving the light.

[0126] With the transmission of light from the first and second arrangement structures, the receiving lens module (20) receives the transmitted light to detect a target image and can align the optical axis of the transmitting lens module (10) based on the target image.

[0127] Next, a method for aligning the optical axis using the second embodiment (200) of the optical axis alignment system is described.

[0128] The second embodiment (200) may include a target (T), a collimating lens (210), and a master module (220).

[0129] The target (T) may refer to an object designed to be identified through multiple lenses, and light may be emitted directly from the target (T) or emitted by passing through the target (T) from an external light source.

[0130] The collimating lens (210) can enable efficient light transmission by making the rays travel parallel to each other as described above, and can convert a target (T) image of a finite distance into an infinite image or an image of a desired finite distance.

[0131] The master module (220) can receive a target image and support aligning the optical axes of the transmitting lens module and the receiving lens module.

[0132] FIG. 7 is a flowchart showing a method for aligning an optical axis using a second embodiment (200) of the optical axis alignment system proposed in the present invention.

[0133] Referring to FIG. 7, the method of aligning the optical axis using the second embodiment (200) may include the case where the optical axis of the receiving lens module (20) is aligned and then the optical axis of the transmitting lens module (10) is aligned, and the case where the optical axis of the transmitting lens module (10) is aligned and then the optical axis of the receiving lens module (20) is aligned.

[0134] First, we will explain the case where the optical axis of the receiving lens module (20) is aligned and then the optical axis of the transmitting lens module (10) is aligned.

[0135] After aligning the optical axis of the receiving lens module (20), the case of aligning the optical axis of the transmitting lens module (10) may start with a step (S210) of arranging in a first arrangement structure or a second arrangement structure and adjusting the stage.

[0136] The optical axis alignment system (200) may further include an optical element (230) having a light transmission function and a light reflection function in the first arrangement structure. Here, the angle at which the optical element (230) reflects may be a right angle, but is not necessarily limited thereto.

[0137] In the first arrangement structure, the optical element (230) may be positioned between the collimating lens (210) and the optical device, and the master module (220) may be positioned to receive light that is transmitted from the collimating lens (210) and then reflected by the optical element (230). Here, the light transmitted from the collimating lens (210) may be emitted directly from the target (T) or transmitted through the target (T) to be emitted by an external light source.

[0138] In the second arrangement structure, the master module (220) may be positioned opposite the collimating lens (210) with respect to the target (T) to receive the target image.

[0139] And, the stage (S) can be formed to support the transmitting lens module (10) and the receiving lens module (20) and to be movable, and can be adjusted so as to receive light transmitted from the collimating lens (210) to the receiving lens module (20).

[0140] After the step (S210) of arranging the first or second arrangement structure and adjusting the stage, the step (S220) of aligning the optical axis of the receiving lens module (20) may be performed. The alignment of the optical axis of the receiving lens module (20) may be performed based on the target image detected by the receiving lens module (20).

[0141] In the first arrangement structure, light transmitted to the collimating lens (210) can be transmitted to the receiving lens module (20) after passing through the optical element (230). Meanwhile, light transmitted to the collimating lens (210) and reflected by the optical element (230) can be transmitted to the master module (220).

[0142] In the second batch structure, light emitted from the target (T) can be directed toward the receiving lens module (20) and the master module (220), respectively. The receiving lens module (20) can receive light that has passed through the collimating lens (210), and the master module (220) can receive light emitted from the target (T) directly.

[0143] With the transmission of light from the first and second arrangement structures, the receiving lens module (20) receives the transmitted light to detect a target image and can align the optical axis of the receiving lens module (20) based on the target image.

[0144] After the step (S220) of aligning the optical axis of the receiving lens module (20), a step (S230) of adjusting the stage (S) to move the transmitting lens module (10) to the position of the receiving lens module (20) may be performed.

[0145] After the step (S230) of adjusting the stage (S), the process may be concluded with the step (S240) of aligning the optical axis of the transmitting lens module (10). The alignment of the optical axis of the transmitting lens module (10) may be performed based on a target image observed by the master module (220).

[0146] In the first batch structure, the target image can be generated as a result of light emitted from the transmitting lens module (10) being transmitted by the optical element (230), passing through the collimating lens (210), and heading toward the target (T). In the step (S220) of aligning the optical axis of the receiving lens module, the light is transmitted to the master module (220) in the same way that the light transmitted to the collimating lens (210) is directed toward the master module (220), and the master module (220) can detect the target image as a result of receiving the light.

[0147] In the second batch structure, the target image can be generated as a result of light emitted from the transmitting lens module (10) passing through the collimating lens (210) and directed toward the target (T). The light is transmitted to the master module (220) in the same manner as the light directed toward the master module (220) in the step (S220) of aligning the optical axis of the receiving lens module (20), and the master module (220) can detect the target image as a result of receiving the light.

[0148] With the transmission of light from the first and second arrangement structures, the master module (220) receives the transmitted light to detect a target image and can align the optical axis of the transmitting lens module (10) based on the target image.

[0149] Next, the case of aligning the optical axis of the receiving lens module (20) after aligning the optical axis of the transmitting lens module (10) is described.

[0150] After aligning the optical axis of the transmitting lens module (10), the case of aligning the optical axis of the receiving lens module (20) may start with a step (S210) of adjusting the stage to a first arrangement structure or a second arrangement structure.

[0151] The optical axis alignment system (200) may further include an optical element (230) having a light transmission function and a light reflection function in the first arrangement structure. Here, the angle at which the optical element (230) reflects may be a right angle, but is not necessarily limited thereto.

[0152] In the first arrangement structure, the optical element (230) may be positioned between the collimating lens (210) and the optical device, and the master module (220) may be positioned to receive light that is transmitted from the collimating lens (210) and then reflected by the optical element (230). Here, the light transmitted from the collimating lens (210) may be emitted directly from the target (T) or transmitted through the target (T) to be emitted by an external light source.

[0153] In the second arrangement structure, the master module (220) may be positioned opposite the collimating lens (210) with respect to the target (T) to receive the target image.

[0154] And, the stage (S) can be formed to support the transmitting lens module (10) and the receiving lens module (20) and to be movable, and can be adjusted so that light emitted from the transmitting lens module (10) passes through the collimating lens (210) and is transmitted to the target (T).

[0155] After the step (S210) of arranging the first or second arrangement structure and adjusting the stage, the step (S220) of aligning the optical axis of the transmitting lens module (10) may be performed. The alignment of the optical axis of the transmitting lens module (10) may be performed based on a target image detected by the master module (220).

[0156] In the first batch structure, a target image can be generated as a result of light emitted from a transmitting lens module (10) being transmitted by an optical element (230), passing through a collimating lens (210), and heading toward a target (T). Subsequently, the light transmitted from the collimating lens (210) can be reflected by an optical element and headed toward a master module (220), and the master module (220) can detect the target image as a result of receiving the light.

[0157] In the second batch structure, a target image can be generated as a result of light emitted from the transmitting lens module (10) passing through the collimating lens (210) and heading toward the target (T). Then, the master module (220) can detect the target image as a result of receiving the light emitted from the target (T).

[0158] After the step (S220) of aligning the optical axis of the transmitting lens module (10), a step (S230) of adjusting the stage (S) to move the receiving lens module (20) to the position of the transmitting lens module (10) may be performed.

[0159] After the step (S230) of adjusting the stage (S), the process may be concluded with the step (S240) of aligning the optical axis of the receiving lens module (20). The alignment of the optical axis of the receiving lens module (20) may be performed based on the target image detected by the receiving lens module (20).

[0160] In the first arrangement structure, light transmitted to the collimating lens (210) can be transmitted to the receiving lens module (20) after passing through the optical element (230). Meanwhile, light transmitted by the collimating lens (210) and reflected by the optical element (230) can be transmitted to the master module (220).

[0161] In the second batch structure, light emitted from the target (T) can be directed toward the receiving lens module (20) and the master module (220), respectively. The receiving lens module (20) can receive light that has passed through the collimating lens (210), and the master module (220) can receive light emitted from the target (T) directly.

[0162] With the transmission of light from the first and second arrangement structures, the receiving lens module (20) receives the transmitted light to detect a target image and can align the optical axis of the receiving lens module (20) based on the target image.

[0163] Finally, a method for aligning the optical axis using the third embodiment (300) of the optical axis alignment system is described.

[0164] A third embodiment (300) may include a target (T), a collimating lens (310), at least one first optical element (320), and at least one second optical element (330).

[0165] The target (T) may refer to an object designed to be identified through multiple lenses, and light may be emitted directly from the target (T) or emitted by passing through the target (T) from an external light source.

[0166] The collimating lens (310) can enable efficient light transmission by making the rays travel parallel to each other as described above, and can convert a target (T) image of a finite distance into an infinite image or an image of a desired finite distance.

[0167] The first optical element (320) and the second optical element (330) may have a light reflection function. Here, the first optical element (320) and the second optical element (330) may perform the function of reflecting light without transmitting it, and may be either a beam splitter or a mirror. The angle at which the first optical element (320) and the second optical element (330) reflect light may be a right angle, but is not necessarily limited thereto.

[0168] FIG. 8 is a flowchart showing a method for aligning an optical axis using a third embodiment (300) of the optical axis alignment system proposed in the present invention.

[0169] Referring to FIG. 8, a method for aligning the optical axis of an optical device using the third embodiment (300) may begin with the step (S310) of aligning the optical axis of a receiving lens module (20).

[0170] A collimating lens (310) can be positioned between a target (T) and an optical device, and a receiving lens module (20) can be positioned to receive light transmitted from the collimating lens (310). The target image can be observed by the light received by the receiving lens module (20). The optical axis of the receiving lens module (20) can be aligned based on the target image. Meanwhile, a transmitting lens module (10) can be positioned parallel to and spaced apart from the receiving lens module (20).

[0171] After the step (S310) of aligning the optical axis of the receiving lens module, the step (S320) of arranging the first optical element (320) and the second optical element (330) may be performed.

[0172] The first optical element (320) may be positioned between the collimating lens (310) and the transmitting lens module (10) so as to face the transmitting lens module (10), where facing means receiving light emitted from the transmitting lens module (10).

[0173] A second optical element (330) may be positioned between a collimating lens (310) and a receiving lens module (20) so as to face the receiving lens module (20), where facing means that the receiving lens module (20) receives light that is reflected by the second optical element (330) after being reflected by the first optical element (320).

[0174] After the step (S320) of arranging the first optical element (320) and the second optical element (330), the process may be completed by proceeding with the step (S330) of aligning the optical axis of the transmitting lens module.

[0175] Light emitted from the transmitting lens module (10) can be reflected by the first optical element (320) and transmitted to the second optical element (330), and then reflected again by the second optical element (330) and directed toward the receiving lens module (20).

[0176] The optical axis of the transmitting lens module (10) can be aligned based on the target image observed by the light directed toward the receiving lens module (20).

[0177] The foregoing description is merely illustrative, and various modifications may be made by those skilled in the art without departing from the scope and technical spirit of the described embodiments. The foregoing embodiments may be implemented individually or in any combination. Explanation of the symbols

[0178] 10: Transmitting lens module 20: Receiving lens module 100, 200, 300: Optical axis alignment system 110, 210, 310: Collimating Lenses 120, 320: First optical element 130, 330: Second optical element 220: Master Module 230: Optical element

Claims

Claim 1 delete Claim 2 An optical axis alignment system of an optical device comprising at least one transmitting lens module and at least one receiving lens module, wherein the optical axis alignment system comprises: a target; a collimating lens disposed between the target and the optical device and converting a target image of a finite distance into an infinite image or an image of a desired finite distance; and a first optical element disposed between the collimating lens and the optical device and having a light transmission function and a light reflection function.and includes a second optical element positioned parallel to the first optical element between the collimating lens and the optical device and having a light reflection function, wherein the first optical element and the second optical element have either a first arrangement structure or a second arrangement structure so as to align the optical axis of the transmitting lens module and the optical axis of the receiving lens module based on a target image observed by light emitted from the transmitting lens module and light received from the receiving lens module, wherein in the first arrangement structure, the first optical element is positioned facing the transmitting lens module so that light emitted from the transmitting lens module passes through the first optical element and is transmitted to the collimating lens, and the second optical element is positioned facing the receiving lens module so that light transmitted from the collimating lens and reflected by the first optical element is received again by the receiving lens module, and in the second arrangement structure, the second optical element is positioned facing the transmitting lens module so that light emitted from the transmitting lens module passes through the first optical An optical axis alignment system comprising: a first optical element positioned to face the receiving lens module so as to reflect light reflected from the second optical element back to the collimating lens, and light transmitted from the collimating lens to be received by the receiving lens module; wherein, in the first arrangement structure, the receiving lens module is provided in plurality, and the second optical element is provided in plurality corresponding to the provision of the receiving lens module in plurality, and each of the plurality of the second optical elements is positioned to reflect light toward each of the plurality of the receiving lens modules, and the first optical element has the function of reflecting light in both directions toward the plurality of the second optical elements. Claim 3 An optical axis alignment system of an optical device comprising at least one transmitting lens module and at least one receiving lens module, wherein the optical axis alignment system comprises: a target; a collimating lens disposed between the target and the optical device and converting a target image of a finite distance into an infinite image or an image of a desired finite distance; and a first optical element disposed between the collimating lens and the optical device and having a light transmission function and a light reflection function. and includes a second optical element positioned parallel to the first optical element between the collimating lens and the optical device and having a light reflection function, wherein the first optical element and the second optical element have either a first arrangement structure or a second arrangement structure so as to align the optical axis of the transmitting lens module and the optical axis of the receiving lens module based on a target image observed by light emitted from the transmitting lens module and light received from the receiving lens module, wherein in the first arrangement structure, the first optical element is positioned facing the transmitting lens module so that light emitted from the transmitting lens module passes through the first optical element and is transmitted to the collimating lens, and the second optical element is positioned facing the receiving lens module so that light transmitted from the collimating lens and reflected by the first optical element is received again by the receiving lens module, and in the second arrangement structure, the second optical element is positioned facing the transmitting lens module so that light emitted from the transmitting lens module passes through the first optical The light is reflected by the element, and the first optical element is positioned facing the receiving lens module so as to reflect the light reflected from the second optical element back to the collimating lens, and also to receive the light transmitted from the collimating lens to the receiving lens module, and in the first arrangement structure, the receiving lens module is provided in multiple numbers.An optical axis alignment system, wherein the second optical element is provided in a plurality corresponding to the provision of a plurality of receiving lens modules, and each of the plurality of second optical elements is arranged to reflect light toward each of the plurality of receiving lens modules, and the first optical element is provided in a plurality corresponding to the provision of a plurality of second optical elements, and the plurality of first optical elements are arranged in a line so that light emitted from the transmitting lens module passes through the plurality of first optical elements and is transmitted to the collimating lens, and each of the plurality of first optical elements is arranged to face in a direction that reflects light toward each of the plurality of second optical elements. Claim 4 An optical axis alignment system of an optical device comprising at least one transmitting lens module and at least one receiving lens module, wherein the optical axis alignment system comprises: a target; a collimating lens disposed between the target and the optical device and converting a target image of a finite distance into an infinite image or an image of a desired finite distance; and a first optical element disposed between the collimating lens and the optical device and having a light transmission function and a light reflection function.and includes a second optical element positioned parallel to the first optical element between the collimating lens and the optical device and having a light reflection function, wherein the first optical element and the second optical element have either a first arrangement structure or a second arrangement structure so as to align the optical axis of the transmitting lens module and the optical axis of the receiving lens module based on a target image observed by light emitted from the transmitting lens module and light received from the receiving lens module, wherein in the first arrangement structure, the first optical element is positioned facing the transmitting lens module so that light emitted from the transmitting lens module passes through the first optical element and is transmitted to the collimating lens, and the second optical element is positioned facing the receiving lens module so that light transmitted from the collimating lens and reflected by the first optical element is received again by the receiving lens module, and in the second arrangement structure, the second optical element is positioned facing the transmitting lens module so that light emitted from the transmitting lens module passes through the first optical An optical axis alignment system comprising: a first optical element positioned to face the receiving lens module so as to reflect light reflected from the second optical element back to the collimating lens, and light transmitted from the collimating lens to be received by the receiving lens module; wherein in the second arrangement structure, the transmitting lens module is provided in plurality, and the second optical element is provided in plurality corresponding to the provision of the transmitting lens module in plurality, and each of the plurality of the second optical elements is positioned to receive light toward each of the plurality of the transmitting lens modules, and the first optical element has the function of receiving light in both directions from the plurality of the second optical elements. Claim 5 An optical axis alignment system of an optical device comprising at least one transmitting lens module and at least one receiving lens module, wherein the optical axis alignment system comprises: a target; a collimating lens disposed between the target and the optical device and converting a target image of a finite distance into an infinite image or an image of a desired finite distance; and a first optical element disposed between the collimating lens and the optical device and having a light transmission function and a light reflection function. and includes a second optical element positioned parallel to the first optical element between the collimating lens and the optical device and having a light reflection function, wherein the first optical element and the second optical element have either a first arrangement structure or a second arrangement structure so as to align the optical axis of the transmitting lens module and the optical axis of the receiving lens module based on a target image observed by light emitted from the transmitting lens module and light received from the receiving lens module, wherein in the first arrangement structure, the first optical element is positioned facing the transmitting lens module so that light emitted from the transmitting lens module passes through the first optical element and is transmitted to the collimating lens, and the second optical element is positioned facing the receiving lens module so that light transmitted from the collimating lens and reflected by the first optical element is received again by the receiving lens module, and in the second arrangement structure, the second optical element is positioned facing the transmitting lens module so that light emitted from the transmitting lens module passes through the first optical The first optical element is positioned facing the receiving lens module to reflect light reflected from the second optical element back to the collimating lens, and light transmitted from the collimating lens is received by the receiving lens module; in the second arrangement structure, the transmitting lens module is provided in multiple numbers.An optical axis alignment system, wherein the second optical element is provided in a plurality corresponding to the provision of a plurality of transmitting lens modules, and each of the plurality of second optical elements is arranged to receive light toward each of the plurality of transmitting lens modules, and the first optical element is provided in a plurality corresponding to the provision of a plurality of second optical elements, and the plurality of first optical elements are arranged in a line to reflect light reflected by the plurality of second optical elements and transmit it to the collimating lens, and each of the plurality of first optical elements is arranged to transmit light that has passed through the collimating lens toward the receiving lens module. Claim 6 An optical axis alignment system of an optical device comprising at least one transmitting lens module and at least one receiving lens module, wherein the optical axis alignment system comprises: a target; a collimating lens disposed between the target and the optical device and converting a target image of a finite distance into an infinite image or an image of a desired finite distance; An optical axis alignment system comprising a master module having a first arrangement structure in the presence of an optical element having a light transmission function and a light reflection function, or having a second arrangement structure without said optical element, wherein in the first arrangement structure, the optical element is positioned between the collimating lens and the optical device to transmit light transmitted from the collimating lens to be received by the receiving lens module and to reflect light to be received by the master module, and in the second arrangement structure, the master module is positioned on the opposite side of the collimating lens with respect to the target to observe the target image, and in an initial state, the receiving lens module is positioned to receive light transmitted from the collimating lens so that the optical axis of the receiving lens module is aligned based on the target image observed by the master module, and a stage that supports and movably forms the transmitting lens module and the receiving lens module so that the optical axis of the transmitting lens module is aligned based on the target image observed by the master module after the optical axis alignment of the receiving lens module moves the transmitting lens module to the position of the receiving lens module. Claim 7 An optical axis alignment system of an optical device comprising at least one transmitting lens module and at least one receiving lens module, wherein the optical axis alignment system comprises: a target; a collimating lens disposed between the target and the optical device and converting a target image of a finite distance into an infinite image or an image of a desired finite distance; and a first optical element and a second optical element having a light reflection function to align the optical axis of the transmitting lens module after aligning the optical axis of the receiving lens module based on the target image observed by light received by the receiving lens module through the collimating lens, wherein the first optical element is disposed in a position facing the transmitting lens module so that light emitted from the transmitting lens module is reflected to the second optical element, and the second optical element is disposed in a position facing the receiving lens module so that the light reflected from the first optical element is reflected again to the receiving lens module. Claim 8 An optical axis alignment system according to claim 7, wherein the transmitting lens module is provided in plurality, the first optical element is provided in plurality corresponding to the transmission lens module being provided in plurality, each of the plurality of first optical elements is arranged to face each of the plurality of transmission lens modules, and the second optical element reflects light reflected from the plurality of first optical elements and receives it at the receiving lens module. Claim 9 A method for aligning the optical axes of an optical device comprising at least one transmitting lens module and at least one receiving lens module using an optical axis alignment system, wherein the optical axis alignment system comprises: a target; a collimating lens that converts a target image of a finite distance into an infinite image or an image of a desired finite distance; and a first optical element having a light transmission function and a light reflection function. A method for aligning the optical axis, comprising a second optical element having a light reflection function, comprising: a) arranging the optical axis alignment system in a first arrangement structure or a second arrangement structure; a-1) wherein, in the first arrangement structure, the first optical element and the second optical element are arranged side by side between the collimating lens and the optical device, the transmitting lens module is arranged in a position facing the first optical element, and the receiving lens module is arranged in a position facing the second optical element; a-2) wherein, in the second arrangement structure, the first optical element and the second optical element are arranged side by side between the collimating lens and the optical device, the transmitting lens module is arranged in a position facing the second optical element, and the receiving lens module is arranged in a position facing the first optical element; and b) aligning the optical axis of the receiving lens module based on a target image detected by the receiving lens module. and b-1) where in the first arrangement structure, light transmitted from the collimating lens is reflected by the first optical element and then reflected again by the second optical element so that the receiving lens module detects the target image; b-2) where in the second arrangement structure, light transmitted from the collimating lens passes through the first optical element and then the receiving lens module detects the target image; and c) a step of aligning the optical axis of the transmitting lens module based on the target image generated by the light emitted from the transmitting lens module and observed by the receiving lens module;A method for aligning the optical axis of an optical device, comprising: c-1) wherein, in the first arrangement structure, light emitted from the transmitting lens module passes through the first optical element and then through the collimating lens toward the target, resulting in the generation of the target image, and the receiving lens module detects the target image in the manner of step b-1); and c-2) wherein, in the second arrangement structure, light emitted from the transmitting lens module is reflected by the second optical element, then undergoes reflection by the first optical element again, passes through the collimating lens toward the target, resulting in the generation of the target image, and the receiving lens module detects the target image in the manner of step b-2). Claim 10 A method for aligning the optical axes of an optical device comprising at least one transmitting lens module and at least one receiving lens module using an optical axis alignment system, wherein the optical axis alignment system comprises: a target; a collimating lens that converts a target image of a finite distance into an infinite image or an image of a desired finite distance; The method for aligning the optical axes includes a master module that supports receiving a target image and aligning the optical axes of the transmitting lens module and the receiving lens module, and comprises: a) a step of arranging the optical axis alignment system in a first arrangement structure or a second arrangement structure and adjusting a stage that supports and movably forms the transmitting lens module and the receiving lens module so that the receiving lens module receives light transmitted from the collimating lens; a-1) in the first arrangement structure, the optical axis alignment system further comprises an optical element having a light transmission function and a light reflection function, and in the first arrangement structure, the optical element is arranged between the collimating lens and the optical device, and the master module is arranged to receive light transmitted from the collimating lens and then reflected by the optical element; a-2) in the second arrangement structure, the master module is arranged on the opposite side of the collimating lens with respect to the target to receive the target image; b) a step of aligning the optical axis of the receiving lens module based on the target image detected by the receiving lens module; b-1) in the first arrangement structure, a-2) light transmitted to the collimating lens passes through the optical element and is transmitted to the receiving lens module, is reflected by the optical element and directed toward the master module, and in the second arrangement structure, light emitted from the target is directed toward the receiving lens module and the master module, respectively, and c) a step of adjusting the stage to move the transmitting lens module to the position of the receiving lens module;and d) a step of aligning the optical axis of the transmitting lens module based on the target image observed by the master module; comprising: d-1) wherein, in the first arrangement structure, the target image is generated as a result of light emitted from the transmitting lens module being transmitted by the optical element and then passing through the collimating lens toward the target, and the target image is transmitted to the master module in such a manner that the light is directed toward the master module by reflection by the optical element in step b-1); and d-2) wherein, in the second arrangement structure, the target image is generated as a result of light emitted from the transmitting lens module passing through the collimating lens toward the target, and the target image is transmitted to the master module. Claim 11 A method for aligning the optical axes of an optical device comprising at least one transmitting lens module and at least one receiving lens module using an optical axis alignment system, wherein the optical axis alignment system comprises: a target; a collimating lens that converts a target image of a finite distance into an infinite image or an image of a desired finite distance; The method for aligning the optical axes includes a master module that supports receiving a target image and aligning the optical axes of the transmitting lens module and the receiving lens module, and comprises: a) a step of arranging the optical axis alignment system in a first arrangement structure or a second arrangement structure and adjusting a stage that supports and movably forms the transmitting lens module and the receiving lens module so that light emitted from the transmitting lens module passes through the collimating lens and is transmitted to the target; a-1) in the first arrangement structure, the optical axis alignment system further comprises an optical element having a light transmission function and a light reflection function, and in the first arrangement structure, the optical element is arranged between the collimating lens and the optical device, and the master module is arranged to receive light reflected by the optical element after being transmitted from the collimating lens; a-2) in the second arrangement structure, the master module is arranged on the opposite side of the collimating lens with respect to the target to receive the target image; b) a step of aligning the optical axis of the transmitting lens module based on the target image detected by the master module.b-1) In the first arrangement structure, light emitted from the transmitting lens module is transmitted by the optical element and passes through the collimating lens to be directed toward the target, resulting in the generation of the target image, and light transmitted from the collimating lens is reflected by the optical element and directed toward the master module; b-2) In the second arrangement structure, light emitted from the transmitting lens module passes through the collimating lens to be directed toward the target, resulting in the generation of the target image, and the target image is transmitted to the master module; c) A step of adjusting the stage to move the receiving lens module to the position of the transmitting lens module; and d) a step of aligning the optical axis of the receiving lens module based on a target image observed at the receiving lens module; comprising: d-1) wherein, in the first arrangement structure, light transmitted to the collimating lens is transmitted to the receiving lens module after passing through the optical element and is reflected by the optical element and directed toward the master module; and d-2) wherein, in the second arrangement structure, light emitted from the target is directed toward the receiving lens module and the master module, respectively. A method for aligning the optical axis of an optical device. Claim 12 A method for aligning the optical axis of an optical device comprising at least one transmitting lens module and at least one receiving lens module using an optical axis alignment system, wherein the optical axis alignment system comprises: a target; a collimating lens that converts a target image of a finite distance into an infinite image or an image of a desired finite distance; and at least one first optical element and at least one second optical element having a light reflection function, and the method for aligning the optical axis comprises: a) aligning the optical axis of the receiving lens module based on a target image observed by light received by the receiving lens module through the collimating lens; b) positioning the first optical element between the collimating lens and the transmitting lens module so as to face the transmitting lens module, and positioning the second optical element between the collimating lens and the receiving lens module so as to face the receiving lens module. and c) a method for aligning the optical axis of an optical axis alignment device, comprising the step of aligning the optical axis of a transmitting lens module based on a target image observed by light emitted from the transmitting lens module, reflected by the first optical element, and then reflected again by the second optical element and observed by the receiving lens module.

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