KR102128038B1 - Optical device and manufacturing method the same - Google Patents

Abstract

A lighting device according to some embodiments includes a barrel; And a directional lens mounted on the barrel, wherein the directional lens comprises: an optical unit configured to allow light to pass through; A support portion surrounding the optical portion; And a protruding gate protruding in a radial direction from the support.

Description

Optical device and manufacturing method thereof

The technical idea of the present invention relates to an optical device and a method for manufacturing the same, and to an optical device and a method for manufacturing the optical device including a rotationally asymmetric component with respect to an optical axis.

The optical axis refers to an axis in which there is no optical difference even when a material or medium is rotated in the corresponding optical system. Inevitably, multiple components (eg, lenses) included in the optical system have rotational symmetry about the optical axis. However, some of the components of the optical system may not have rotational symmetry. For example, in the case of a birefringent material, a polarizing plate, an asymmetric lens, or a projection film, when the rotation angle with respect to the optical axis changes, characteristics of light passing through it may change. Accordingly, some components of the rotational asymmetry of the optical system need to be rotationally aligned with respect to other components.

The problem to be solved by the technical idea of the present invention is to provide an optical device having improved productivity and easy alignment of an optical system and a method of manufacturing the optical device.

The problems to be solved by the technical idea of the present invention are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

In order to solve the above-described problem, an optical device according to some embodiments includes a barrel; And a directional lens mounted on the barrel, wherein the directional lens comprises: an optical unit configured to allow light to pass through; A support portion surrounding the optical portion; And a protruding gate protruding in the radial direction from the support.

The barrel includes a protruding gate coupling groove, and the protruding gate can be coupled to the protruding gate.

An optical device according to some embodiments is aligned with respect to the directional lens and includes a directional member that is rotationally asymmetric with respect to the optical axis of the lens, wherein the directional member is a functional unit and the functional unit disposed on the optical unit It may include a protrusion projecting from.

The directional lens may include a directional member engaging groove formed in the support.

The protrusion of the directional member may be coupled to the directional member engaging groove.

A predetermined character may be printed on the optical portion of the lens.

An optical device configured to be installed in an interior or side mirror of a door of a vehicle according to some embodiments includes a barrel including a coupling groove; A directional lens aligned with the barrel; And a logo film aligned and printed on the directional lens, the directional lens comprising: an optical unit configured to pass light; A support portion surrounding the optical portion; And a protruding gate protruding in the radial direction from the support portion about the optical axis, and coupled to the coupling groove.

A method of manufacturing an optical device according to some embodiments includes providing an directional lens including an optical unit configured to allow light to pass through, a support portion surrounding the outer periphery of the optical portion, and a protruding gate protruding outward from the support portion; Aligning and mounting a directional member on the directional lens; And providing a barrel to cover the directional lens on which the directional member is mounted.

The providing of the barrel may include forming a gate coupling groove configured to engage the protruding gate on the barrel.

In the step of providing the directional lens, a resin mold is provided to a mold corresponding to the directional lens to form a branch mold injection material including a spur having a rod shape, a gate branched in plural from the spur, and a lens part connected to the gate. step; And separating the lens unit from the mold injection material to include a part of the gate.

The providing of the directional lens may further include forming a directional member coupling groove configured to allow the directional member to be coupled to the support portion of the directional lens.

According to the technical idea of the present invention, it is possible to provide an optical device with improved reliability.

1A is a perspective view for describing an optical device according to some embodiments.
1B is an exploded perspective view of the optical device of FIG. 1A.
2A is a perspective view for describing an optical device according to some embodiments.
2B is an exploded perspective view of the optical device of FIG. 2A.
3A is a perspective view for describing an optical device according to some embodiments.
3B is an exploded perspective view of the optical device of FIG. 3A.
4A is a perspective view for describing an optical device according to some embodiments.
4B is an exploded perspective view of the optical device of FIG. 4A.
5 is a flowchart illustrating a method of manufacturing an optical device according to some embodiments.
6A and 6B are perspective views illustrating a method of manufacturing a directional lens included in an optical device according to some embodiments.
7 and 8 are schematic diagrams for explaining the use of an optical device according to some embodiments.

It has the same meaning as commonly understood by a person having ordinary knowledge in the technical field to which the concept of the present invention belongs, including terms. In addition, commonly used terms, as defined in the dictionary, should be interpreted as having meanings consistent with what they mean in the context of related technologies, and in excessively formal meanings unless explicitly defined herein. It will be understood that it should not be interpreted.

When an embodiment can be implemented differently, a specific process order may be performed differently from the described order. For example, two processes described in succession may be performed substantially simultaneously, or may be performed in an order opposite to that described.

In the accompanying drawings, deformations of the illustrated shape can be expected, for example, depending on manufacturing technology and/or tolerances. Therefore, the embodiments of the present invention should not be interpreted as being limited to a specific shape of a region shown in the present specification, but should include, for example, a change in shape caused in the manufacturing process. All terms “and/or” as used herein include each and every combination of one or more of the components mentioned.

1A is a perspective view for describing the optical device 100 according to some embodiments, and FIG. 1B is an exploded perspective view of the optical device 100 of FIG. 1A.

1A and 1B, the optical device 100 may include a barrel 110, an inner lens 120, a directional lens 130, and a directional member 140.

The barrel 110 may be a means for fixing and protecting components of the optical system included in the optical device 100. The barrel 110 may provide a space in which the inner lens 120 and the directional lens 130 can be mounted. According to some embodiments, a light source such as a light emitting diode may be further disposed in the barrel 110. Barrel 110 may include engaging groove 116 as shown.

The inner lens 120 and the directional lens 130 may emit light irradiated from the light source from the optical axis OA, so that the light reaches a large area. Referring to FIG. 1A, the optical device 100 is illustrated as including one internal lens 120, but is not limited thereto, and may include a plurality of internal lenses.

As described above, the optical axis OA refers to an axis that does not optically differ even when a material or medium is rotated in the corresponding optical system. In FIG. 1B, the optical axis OA may be a common optical axis of the optical unit 132 of the directional lens 130 and the internal lens 120. According to some embodiments, the optical axis OA may pass approximately the center of the functional portion 142 of the directional member 140 described below, but is not limited thereto.

When a plurality of inner lenses are provided, the barrel 110 may include gap maintaining members for maintaining a gap between the plurality of inner lenses. Spacing members may be disposed between the inner lenses. The thickness-spacing member can increase the distance between the inner lenses, and the thickness-spacing member can narrow the distance between the inner lenses. According to some embodiments, a press ring may be further coupled to the barrel 110. The press-fit ring may be fixed to the barrel 110 in a manner such as interference fit, adhesion, and thread fit. The indentation ring may prevent the inner lenses from separating from the barrel 110.

According to some embodiments, the inner lens 120 may have rotational symmetry about the optical axis OA. However, the present invention is not limited thereto, and the inner lens may not have rotational symmetry. According to some embodiments, the inner lens 120 and the directional lens 130 may be concave lenses. However, the present invention is not limited thereto, and it is also possible that any one of the inner lens 120 and the directional lens 130 is a convex lens. According to some embodiments, the inner lens 120 and the directional lens 130 may be spherical lenses. According to some other embodiments, the inner lens 120 and the directional lens 130 may be aspherical lenses. According to some embodiments, the inner lens 120 and the directional lens 130 may include any of glass and plastic. According to some embodiments, the inner lens 120 and the directional lens 130 may correct chromatic aberration. According to some embodiments, the inner lens 120 and the directional lens 130 may correct distortion of an image and/or image irradiated by an optical device.

The directional lens 130 may include an optical portion 132, a support portion 134, and a protruding gate 136 protruding from the support portion. The optical unit 132 is a portion that substantially performs an optical function of the directional lens 130, for example, in the case of a concave shape, can disperse light, and in the case of a convex shape, converge light. According to some embodiments, the optical unit 132 may have rotational symmetry about the optical axis. However, the present invention is not limited thereto, and the optical unit 132 may not have rotational symmetry with respect to any axis, and in this case, the optical axis of the directional lens 130 may not exist.

The support part 134 may surround the outer periphery of the optical part 132. According to some embodiments, the support 134 may have rotational symmetry about the optical axis, but is not limited thereto. A directional member coupling groove 135 may be formed in the support portion 134 of the directional lens 130. The directional member coupling groove 135 may be a structure that is embedded compared to the adjacent support portion 134, but is not limited thereto.

According to some embodiments, the length of the protrusion gate 136 in the optical axis (OA) direction may be smaller than the length of the support portion 134 in the optical axis (OA) direction. According to some embodiments, the protruding gate 136 may be coupled to the engaging groove 116 of the barrel. According to some embodiments, the directional lens 130 may not rotate relative to the engaging groove 116 by the protruding gate 136. According to some embodiments, after the directional lens 130 is mounted on the barrel 110, the protruding gate 136 is not projecting from the outer circumference of the barrel 110 (ie, radiating to the optical axis OA) Direction length). According to some embodiments, the thickness of the barrel 110 (ie, the radial length with respect to the optical axis OA) may be greater than or equal to the thickness of the protruding gate 136, but is not limited thereto.

The directional member 140 may be disposed on the directional lens 130. The directional member 140 can be aligned with respect to the directional lens 130. The directional member 140 may include a functional portion 142 and a protruding portion 144 protruding from the functional portion 142. According to some embodiments, when the directional member 140 is coupled to the directional lens 130, the functional portion 142 may be disposed on the optical portion 132. According to some embodiments, when the directional member 140 is coupled to the directional lens 130, the functional unit 142 may overlap the optical unit 132 in the optical axis (OA) direction. The function unit 142 may perform a substantial optical function of the directional member 140. According to some embodiments, the functional unit 142 may birefring light that has passed through the directional member 140. According to some embodiments, the function unit 142 may amplify a component ratio of harmonics of light passing through the directional member 140. For example, the energy ratio of the second harmonic among the energy of the pointing vector of the directional member 140 passing through the functional unit 142 may be increased. According to some embodiments, the function unit 142 may polarize light passing through the directional member 140. According to some embodiments, a predetermined character, logo, and/or shape may be printed on the function unit 142 to project the character, logo, and/or shape as embossed or engraved. The protrusion 144 may be coupled to the directional member coupling groove 135 of the directional lens 130. Accordingly, the directional lens 130 and the directional member 140 may be aligned.

2A is a perspective view for explaining the optical device 100' according to some embodiments, and FIG. 2B is an exploded perspective view of the optical device 100' of FIG. 2A.

For convenience of explanation, overlapping with those described with reference to FIGS. 1A and 1B will be omitted and description will be made based on differences.

3A and 3B, the optical device 100 ′ may include a barrel 110 ′. The barrel 110' may be a means for fixing and protecting the components of the optical system included in the optical device 100'. The barrel 110 ′ may provide a space in which the inner lens 120 and the directional lens 130 can be mounted. According to some embodiments, a light source such as a light emitting diode may be further disposed in the barrel 110 ′. The barrel 110 ′ may further include a coupling groove 116 and a barrel protrusion 118 as shown. The barrel protrusion 118 may protrude from the outer circumference of the barrel 110'. The length of the barrel protrusion 118 in the optical axis OA direction may be shorter than the length of the barrel 110 ′ in the optical axis OA direction. According to some embodiments, when the directions in which the barrel protrusion 118, the protrusion gate 136, and the protrusion 144 project from the optical axis OA are referred to as the protrusion direction, the barrel protrusion 118, the protrusion gate 136 ) And the protrusion direction of the protrusion 144 may be different. However, the present invention is not limited thereto, and the protruding directions of the barrel protruding portion 118 and the protruding gate 136 are substantially equal to each other, or the protruding directions of the barrel protruding portion 118 and the protruding portion 144 are substantially equal to each other, or protruding gates. The protruding directions of 136 and the protruding portions 144 may be substantially the same as each other. Further, according to some embodiments, the protruding directions of the barrel protruding portion 118 and the protruding gate 136 and the protruding portion 144 may be substantially the same as each other. Also, unlike the drawings, the protrusion directions of the barrel protrusion 118, the protrusion gate 136, and the protrusion 144 may be substantially the same as each other.

3A is a perspective view for explaining the optical device 100" according to some embodiments, and FIG. 3B is an exploded perspective view of the optical device 100" in FIG. 3A.

For convenience of explanation, overlapping with those described with reference to FIGS. 1A and 1B will be omitted and description will be made based on differences.

3A and 3B, the optical device 100 ″ may include a directional lens 130 ′. The directional lens 130 ′ includes an optical unit 132, a support 134, and a support 134. It may include a protruding gate (136') protruding from the optical unit 132 is a portion that substantially performs the optical function of the directional lens 130, for example, in the case of a concave shape can disperse light, convex In the case of a shape, light may be converged, and according to some embodiments, the optical unit 132 may have rotational symmetry about the optical axis, but is not limited thereto, and the optical unit 132 may be random There may be no rotational symmetry about the axis, in which case the optical axis of the directional lens 130' may not be present.

According to some embodiments, the length in the optical axis (OA) direction of the protruding gate 136' may be smaller than the length in the optical axis (OA direction) of the support 134. According to some embodiments, the protruding gate 136' ) May be coupled to the engaging groove 116 of the barrel. According to some embodiments, after the directional lens 130 ′ is mounted on the barrel 110, the protruding gate 136 ′ is of the barrel 110. In some embodiments, the thickness of the protruding gate 136' (ie, the radial length relative to the optical axis OA) is the thickness of the barrel 110 (ie, the optical axis). (OA).

4A is a perspective view for explaining the optical device 100"' according to some embodiments, and FIG. 4B is an exploded perspective view of the optical device 100"' of FIG. 4A.

For convenience of explanation, overlapping with those described with reference to FIGS. 1A and 1B will be omitted and description will be made based on differences.

4A and 4B, the optical device 100"' may include a directional lens 130". The directional lens 130" may include an optical portion 132', a support portion 134, and a protruding gate 136 protruding from the support portion 134. The optical portion 132' is a directional lens 130". It may be a part that substantially performs the optical function of.

According to some embodiments, a pattern (for example, a logo or emblem) or letters printed on the optical unit 132' of the directional lens 130" may be included. According to some embodiments, accordingly The directional member and the directional member engaging grooves shown in Figs. 1B, 2B, and 3B may be omitted, according to some embodiments, the optical portion 132' is for the optical axis, except for the printed text. It may have rotational symmetry, but is not limited to this, for example, the optical unit 132' may not have rotational symmetry about any axis, and in this case, the optical axis of the directional lens may not exist.

5 is a flowchart illustrating a method of manufacturing an optical device according to some embodiments.

6A and 6B are perspective views illustrating a method of manufacturing a lens included in an optical device according to some embodiments.

Referring to FIGS. 5 and 65A, at P10, a mold injection product 150 may be provided by any method known in the art. According to some embodiments, a mold injection product 150 may be provided by providing molten resin or molten glass in a mold to sufficiently fill the mold, and then cooling the molten resin or glass in the mold.

According to some embodiments, the mold injection material 150 may include a spur 151, a runner 153, a gate 155 and a lens unit 157. The spur 151 may be formed by flowing molten resin and/or molten glass into a mold. The runner 153 may be formed by branching the molten resin and/or molten glass of the spur 151. The gate 155 may be formed by branching and flowing molten resin and/or molten glass of the runner 153. The molten resin and/or molten glass flowing to the gate 155 may fill the space formed to correspond to the directional lens 130 (see FIG. 1B) in the mold to form the lens unit 157.

Referring to Figure 6a, the mold injection 150 is shown as including four lens portions 157, but is not limited thereto. For example, it is possible that the mold injection material includes one to three, or five or more lens parts.

5 and 6B, at P 20, the lens portion 157 of the mold injection object 150 is separated such that the gate 155 remains in the lens portion 157, and the directional lens 130 shown in FIG. 1B is removed. ). The remaining gates may be the gate protrusions 136 and 136` shown in FIGS. 1B, 2B, and 3B. When separating the lens unit 157, the length of the gate remaining in the lens unit 157 may be different according to embodiments.

In the related art, a separate process, such as forming a D cut in a support portion of the lens, was performed to identify the direction of the lens. On the other hand, embodiments of the present invention, when separating the lens portion 157 of the mold injection material may not completely remove the gate 155 formed in the mold injection material. According to some embodiments, a structure for aligning and fixing a lens can be easily formed without an additional process. Accordingly, it is possible to save required molten resin or molten glass to form a separate structure for alignment, and there is no additional process, so that productivity (e.g., cost and production cost reduction, production speed improvement) is improved optical device and optics A device manufacturing method can be provided. Furthermore, when the directional member 140 (see FIG. 1B) is mounted on the lens, it is possible to reduce the size of the entire optical system while ensuring alignment of the directional member with respect to the optical device 100 (see FIG. 1A ).

Subsequently, referring to FIGS. 1B and 5, a directional member coupling groove 135 may be formed in the directional lens 130 at P25. According to some embodiments, in the step of forming the mold injection material, the directional member coupling groove 135 may be formed in the lens unit 157, and in this case, P25 may be omitted.

Subsequently, referring to FIGS. 1B and 2, the directional member 140 is coupled to the directional lens 130 at P30, the coupling groove 116 is formed at the barrel 110 at P35, and the directional member at P40 ( The directional lens 130 combined with 140 may be coupled to the barrel 110. Although not limited to this, when the barrel is formed by an injection method, a structure for forming a coupling groove 116 in a mold for forming the barrel 110 is included, and the barrel 110 immediately after injection includes the coupling groove ( 116). According to some embodiments, it is also possible for the order of P 30 and P25 to be interchanged.

7 and 8 are schematic diagrams for explaining the use of an optical device according to some embodiments.

Referring to FIG. 7, an optical device 20 for projecting a predetermined pattern (for example, a logo or emblem) or text on the ground when the door is opened may be provided on a door of a vehicle. The optical device 100 may be the optical devices 100, 100', and 100" described with reference to FIGS. 1A to 3B. According to some embodiments, in this case, the directionality included in the optical device 20 The member may be a logo film According to some embodiments, when the door 10 is opened, the light source included in the optical device 20 is automatically operated to enlarge the pattern of the logo film and project it on the ground.

According to some embodiments, the optical device 20 may be configured to operate automatically by a door opening detection sensor. According to some embodiments, the optical device 20 may be configured to selectively operate in a dark environment at night, an underground parking lot tunnel, and the like.

According to some embodiments, the optical device 20 may improve a vehicle's merchandise by projecting a vehicle's logo or emblem on the ground when the door 10 is opened, and improve the safety of alighting by lighting the ground. do.

According to some embodiments, when the optical device 20 is coupled to the door, it is possible to easily grasp the degree of rotation of the optical device due to the coupling groove formed in the barrel.

According to some embodiments, when the optical device 20 corresponding to the optical device shown in FIGS. 1A and 1B is coupled to the door 10, the optical device 20 is opened due to a coupling groove formed in the barrel ( 10) for easy alignment. Specifically, there is a protrusion configured to be engaged with a coupling groove of the optical device 20 in the door 10 so that the optical device 20 can be aligned with respect to the door.

According to some embodiments, when the optical device 20 corresponding to the optical device shown in FIGS. 2A and 2B is coupled to the door 10, the optical device 20 is attached to the door 10 due to the barrel protrusion. Can be easily aligned. Specifically, a groove configured to engage the barrel protrusion of the optical device 20 exists in the door 10 so that the optical device 20 can be aligned with respect to the door.

According to some embodiments, when the optical device 20 corresponding to the optical device shown in FIGS. 3A and 3B is coupled to the door 10, the optical device 20 is attached to the door 10 due to the gate protrusion. Can be easily aligned. Specifically, there is a groove configured to engage the gate protrusion of the optical device 20 in the door 10 so that the optical device 20 can be aligned with respect to the door.

According to some embodiments, the optical device 20 may be configured to form an accurate image without distortion of light reflected on the ground. According to some embodiments, the optical device 20 may be installed at the bottom of the vehicle door to irradiate light substantially vertically downward. According to some embodiments, a protection part for protecting the optical device 20 may be additionally provided. According to some embodiments, the protection unit may be implemented in a panel shape by using a material that transmits the light of the optical device 20 without dimming or deforming it.

In addition, referring to FIG. 7, the optical device 20 according to some embodiments is illustrated as being disposed at the lower end of the door 10, but is not limited thereto. For example, as shown in FIG. 8, the optical device 20 may be disposed at the bottom of the side mirror 30 to operate as a welcome lamp (that is, a lamp that recognizes a user's approach and performs a predetermined operation). .

The embodiments of the present invention have been described above with reference to the accompanying drawings, but those of ordinary skill in the art to which the present invention pertains can implement the present invention in other specific forms without changing its technical spirit or essential features. You will understand that there is. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

100: optical device, 110: barrel, 120: inner lens, 130: directional lens, 140: directional member

Claims (10)

A barrel including a protruding gate engaging groove;
A directional lens aligned with the barrel and mounted on the barrel; And
Aligned with respect to the directional lens, mounted on the directional lens, including a logo film having a thickness smaller than the directional lens,
The directional lens,
An optical unit configured to allow light to pass through;
A support portion surrounding the optical portion;
A logo film coupling groove formed in the support portion; And
Protruding in the radial direction from the support portion, and includes a protruding gate in contact with the protruding gate,
The logo film,
A function unit having a printed shape; And
It includes a projection projecting in the radial direction from the functional unit,
The projection of the logo film is in contact with the logo film coupling groove, the logo film is an optical device, characterized in that in direct contact with the directional lens. delete delete delete delete An optical device configured to be installed on the inside or side mirror of a car door,
A barrel comprising an engaging groove;
A directional lens aligned with the barrel and mounted on the barrel; And
Aligned on the directional lens and mounted on the directional lens, including a logo film is printed on the shape,
The directional lens,
An optical section having light configured to pass therethrough;
A support portion surrounding the optical portion;
A logo film coupling groove formed in the support portion; And
It includes a protruding gate protruding in the radial direction from the support portion about the optical axis, and in contact with the coupling groove,
The logo film,
A function unit arranged to overlap the optical unit and having the shape printed thereon; And
It includes a projection projecting from the functional unit,
The protrusion of the logo film is an optical device, characterized in that the contact is coupled to the logo film coupling groove of the directional lens.


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