Variable focus lamp apparatus and variable focus lamp system

Abstract

The present invention introduces a focus-variable lighting device and a focus-variable lighting system that reduce the installation space in an indoor roof and lower manufacturing costs by adjusting the irradiation position of light to various locations in an indoor space using a single light source.

Description

Technology Field

[0001] The present invention relates to a focus-variable lighting device and a focus-variable lighting system capable of irradiating light to various locations in an indoor space using a single light source in an indoor lighting fixture. Background Technology

[0003] Generally, vehicles are required to go beyond their function as a means of transportation and include various convenience features that can provide users with a more stable and comfortable riding experience.

[0004] Vehicle interior lighting, one of these convenience features, is evolving from a form that simply provides lighting inside the vehicle to a form that can provide a comfortable and cozy atmosphere for the driver and passengers.

[0005] In particular, the interior lighting is installed embedded in the center of the vehicle's interior roof or between the driver's and passenger's seats to illuminate the vehicle's interior.

[0006] However, in the case of indoor lighting, the direction of light illumination is fixed from the initial installation location to a designated location. That is, indoor lighting consists of a light source installed embedded in the indoor roof and a lens covering it; when the indoor lighting is in operation, light emitted from the source passes through the lens and is projected into the indoor space.

[0007] Accordingly, conventionally, in order to illuminate various locations indoors, lighting modules consisting of light sources and lenses had to be installed at each desired location. This resulted in increased unit costs for assembling the lighting modules, the need to secure space for each module, and issues that compromise the design of the interior roof.

[0009] The matters described above as background technology are intended only to enhance understanding of the background of the present invention and should not be construed as an acknowledgment that they constitute prior art already known to those skilled in the art. Prior art literature

[0011] (Patent Document 0001) KR 10-2202016 B1 (2021.01.06) The problem to be solved

[0012] The present invention is proposed to solve these problems and aims to provide a focus-variable lighting device and a focus-variable lighting system that reduce the installation space in an indoor roof and lower manufacturing costs by using a single light source to irradiate light to various locations in an indoor space. means of solving the problem

[0014] A variable focus lighting device according to the present invention for achieving the above objective comprises: a light source that emits light; a variable focus lens into which light from the light source is incident and configured to be deformable so as to change the irradiation position and irradiation pattern of the light according to the deformed shape; and a driver connected to the variable focus lens and deforming the variable focus lens so that, upon input of a command signal, the irradiation position and irradiation pattern of the light satisfy the command signal.

[0015] A variable focus lens is characterized by comprising a lens portion that allows light from a light source to be incident and causes the incident light to be emitted with focus, and a connecting portion that extends from the edge of the lens portion, is connected to a actuator, and moves by the operation of the actuator to deform the lens portion.

[0016] The lens portion is formed to protrude convexly toward the opposite side of the light source, and is characterized by having a variable focus as its shape is deformed by the movement of the connecting portion.

[0017] The lens portion is formed in a zigzag or curved shape and is characterized by expanding or contracting depending on whether the actuator is operated.

[0018] The variable focus lens is characterized by a portion of its frame being fixed through a fixed part, and a driver being connected to the variable focus lens on the opposite side of the fixed part.

[0019] The actuator is composed of multiple actuators, and each actuator is characterized by being symmetrically positioned from the center of the variable focus lens.

[0020] The actuator is composed of a one-sided actuator and a other-sided actuator, and is characterized by the one-sided actuator and the other-sided actuator being symmetrically arranged on both sides of the variable focus lens.

[0021] Meanwhile, the focus-variable lighting system according to the present invention comprises: a light source installed indoors to irradiate light into an indoor space; a first variable focus lens configured to allow light from the light source to be incident and to be flexibly deformable; a second variable focus lens configured to allow light passing through the first lens to be incident and to be flexibly deformable; a first actuator connected to the first variable focus lens to deform the first variable focus lens in the lateral direction of the indoor space upon input of a command signal; a second actuator connected to the second variable focus lens to deform the second variable focus lens in the front-back direction of the indoor space upon input of a command signal; and a controller that transmits a command signal to the first actuator and the second actuator according to the input required lighting to cause the first variable focus lens and the second variable focus lens to deform, thereby satisfying the light irradiation position and irradiation shape of the required lighting.

[0022] The first actuator is composed of a first X-axis actuator and a second X-axis actuator, and is characterized by the first X-axis actuator and the second X-axis actuator being arranged symmetrically to the left and right from the center of the first variable focus lens.

[0023] The controller is characterized by transmitting a command signal to the second X-axis synchronizer to cause the first variable focus lens to deform to the left when the required lighting is input at a position spaced to the left from the installation position of the light source, and transmitting a command signal to the first X-axis synchronizer to cause the first variable focus lens to deform to the right when the required lighting is input at a position spaced to the right from the installation position of the light source.

[0024] The controller is characterized by transmitting a command signal to the first X-axis synchronous motor and the second X-axis synchronous motor so that when the required lighting is input to spread in the left-right direction from the installation position of the light source, the first variable focus lens is deformed to its initial shape or spread out in the left-right direction.

[0025] The second actuator is composed of a first Y-axis actuator and a second Y-axis actuator, and is characterized by the first Y-axis actuator and the second Y-axis actuator being arranged symmetrically in the front-rear direction from the center of the second variable focus lens.

[0026] The controller is characterized by transmitting a command signal to the second Y-axis synchronizer to cause the second variable focus lens to deform forward when the required lighting is input at a position spaced forward from the installation position of the light source, and transmitting a command signal to the first Y-axis synchronizer to cause the second variable focus lens to deform backward when the required lighting is input at a position spaced backward from the installation position of the light source.

[0027] The controller is characterized by transmitting a command signal to the first Y-axis synchronous motor and the second Y-axis synchronous motor so that when the required lighting is input to spread in the front-rear direction from the installation position of the light source, the second variable focus lens is deformed to its initial shape or spread out in the front-rear direction.

[0028] The controller is characterized by controlling the brightness of the light source to be variable when the input required lighting is concentrated or diffused at a specific location. Effects of the invention

[0030] The focus-variable lighting device and focus-variable lighting system, constructed with the structure described above, reduce the installation space in the indoor roof and lower manufacturing costs by adjusting the irradiation position of light to various locations in the indoor space using a single light source. Brief explanation of the drawing

[0032] FIG. 1 is a drawing showing a focus-variable lighting device according to the present invention. FIG. 2 is a diagram showing the operation of the focus-variable lighting device illustrated in FIG. 1. FIG. 3 is a drawing showing a focus-variable lighting device according to another embodiment of the present invention. FIG. 4 is a drawing showing the operation of the focus-variable lighting device illustrated in FIG. 3. FIG. 5 is a drawing showing the application of a fixed part in a focus-variable lighting device. FIG. 6 is a drawing showing the focus-variable lighting system of the present invention. FIG. 7 is a drawing showing the first variable focus lens and the first driver of the focus-variable lighting system illustrated in FIG. 6. FIG. 8 is a drawing showing the second variable focus lens and the second driver of the focus-variable lighting system illustrated in FIG. 6. FIGS. 9 and FIGS. 10 are drawings showing embodiments of a focus-variable lighting system. Specific details for implementing the invention

[0033] Hereinafter, a focus-variable lighting device and a focus-variable lighting system according to a preferred embodiment of the present invention will be examined with reference to the attached drawings.

[0035] FIG. 1 is a drawing showing a focus-variable lighting device according to the present invention, FIG. 2 is a drawing showing the operation of the focus-variable lighting device shown in FIG. 1, FIG. 3 is a drawing showing a focus-variable lighting device according to another embodiment of the present invention, FIG. 4 is a drawing showing the operation of the focus-variable lighting device shown in FIG. 3, and FIG. 5 is a drawing showing the application of a fixed part in the focus-variable lighting device.

[0036] In addition, FIG. 6 is a drawing showing a focus-variable lighting system of the present invention, FIG. 7 is a drawing showing a first variable focus lens and a first driver of the focus-variable lighting system shown in FIG. 6, FIG. 8 is a drawing showing a second variable focus lens and a second driver of the focus-variable lighting system shown in FIG. 6, and FIG. 9 and FIG. 10 are drawings showing an embodiment of the focus-variable lighting system.

[0038] As shown in FIG. 1, the focus-variable lighting device according to the present invention comprises: a light source (10) that emits light; a variable focus lens (20) into which light from the light source (10) is incident and configured to be deformable so that the position and shape of the light irradiation change according to the deformed shape; and a driver (30) to which the variable focus lens (20) is connected and which deforms the variable focus lens (20) so that the position and shape of the light irradiation satisfy the command signal when a command signal is input.

[0039] Here, the light source (10) can be composed of an LED and can be installed in an indoor roof.

[0040] A variable focus lens (20) is installed so that light irradiated from a light source (10) is incident and the light is emitted with focus. This variable focus lens (20) is made of a silicone material so that light is transmitted and can be flexibly deformed, thereby causing the light to be refracted according to the deformation shape, so that the position and shape of the light irradiation change.

[0041] Meanwhile, the shape of the variable focus lens (20) is determined by whether the actuator (30) is operated. Here, the actuator (30) can be controlled by a controller (50), and the controller (50) determines the irradiation position of light based on the user's switch operation or the user's location information, and transmits a command signal based on the determined irradiation position of light to the actuator (30), thereby causing the actuator (30) to operate with the command signal and deform the variable focus lens (20).

[0042] As a result, the variable focus lens (20) can be deformed by the actuator (30) to spread out or contract, or to tilt up and down.

[0043] In this way, the present invention allows the irradiation position or irradiation shape of light irradiated from the light source (10) to change according to the shape of the irradiation lens (20) by the variable focus lens (20) as the variable focus lens (20) is deformed by the actuator (30), thereby enabling light to be irradiated to various locations in an indoor space with a single light source (10).

[0044] To explain the invention described above in detail, the variable focus lens (20) comprises a lens part (21) into which light from a light source (10) is incident and which causes the incident light to be emitted with focus, and a connecting part (22) that extends from the edge of the lens part (21), is connected to a driving device (30), and moves by the operation of the driving device (30) to deform the lens part (21).

[0045] As can be seen in FIG. 1, the variable focus lens (20) is composed of a lens portion (21) and a connecting portion (22). The lens portion (21) is formed so that incident light is emitted with focus, and the connecting portion (22) extends from the edge of the lens portion (21) and is connected to a driver (30), and moves by the operation of the driver (30) to deform the lens portion (21). Accordingly, the variable focus lens (20) is installed so that the lens portion (21) faces the light source (10), and as the connecting portion (22) extending from the lens portion (21) is connected to the driver (30), light passing through the lens portion (21) can be emitted with focus without interfering with the driver (30).

[0046] Thus, the lens portion (21) and the connecting portion (22) forming the variable focus lens (20) are integrally formed of the same material, and as the connecting portion (22) deforms the shape of the lens portion (21) by the driving device (30), the light passing through the lens portion (21) is bent, thereby changing the irradiation position and irradiation shape of the light.

[0047] These lens parts (21) can be applied in various embodiments depending on their shape.

[0048] As an example, as can be seen in FIG. 1, the lens portion (21) is formed to protrude convexly toward the opposite side of the light source (10), and the focus can be varied as the shape is deformed by the movement of the connecting portion (22).

[0049] In this way, the lens portion (21) protrudes convexly toward the opposite side of the light source (10), so that light passing through the lens portion (21) can be concentrated at a specific point. In addition, when the connecting portion (22) of the variable focus lens (20) moves by the operation of the driving unit (30), the position where light is concentrated is adjusted as the lens portion (21) is deformed by the movement of the connecting portion (22). That is, as can be seen in FIG. 2, when the connecting portion (22) on the right is moved to the left by the operation of the driving unit (30) and the shape of the lens portion (21) is deformed, the position of the light emitted through the lens portion (21) is adjusted.

[0050] In this way, as the lens portion (21) forms a block-like protruding shape, light is concentrated at a specific point, and when the shape is deformed by the actuator (30), the position of the concentrated light changes, thereby allowing the light irradiated from the light source (10) to be adjusted to various positions.

[0051] Meanwhile, as another embodiment, as shown in FIG. 3, the lens portion (21) is formed in a zigzag or curved shape and can be spread out or closed depending on whether the actuator (30) is operated. That is, as can be seen in FIG. 3, when the lens portion (21) is closed and formed in a zigzag or curved shape by the operation of the actuator (30), the light passing through the lens portion (21) is diffused. Also, as can be seen in FIG. 4, when the lens portion (21) is spread out by the operation of the actuator (30), the light passing through the lens portion (21) is concentrated.

[0052] In this way, as the lens portion (21) is formed in a zigzag or curved shape, the light is diffused or concentrated, thereby allowing the light irradiated from the light source (10) to be adjusted to various positions.

[0053] Meanwhile, as shown in FIG. 5, a portion of the frame of the variable focus lens (20) is fixed through a fixed part (40), and a driver (30) can be connected to the variable focus lens (20) on the opposite side of the fixed part (40).

[0054] Thus, the variable focus lens (20) has a fixed part (40) installed on one side and a driving part (30) connected to the other side, so that the variable focus lens (20) can be deformed with only one driving part (30). That is, when the driving part (30) pushes or pulls to deform the variable focus lens (20), the fixed part (40) is connected to the opposite side of the driving part (30) of the variable focus lens (20), thereby fixing the position of the variable focus lens (20) so that the variable focus lens (20) can be smoothly deformed through one driving part (30). Through this, by deforming the variable focus lens (20) with one driving part (30), the position and shape of the light irradiated from one light source (10) can be changed according to the deformed shape of the variable focus lens (20). In addition, by changing the position and shape of the light irradiation through one light source (10) and one driving part (30), the manufacturing cost is reduced.

[0055] Meanwhile, the actuator (30) is composed of multiple actuators, and each actuator (30) can be arranged symmetrically from the center of the variable focus lens.

[0056] Thus, by connecting a plurality of actuators (30) to the variable focus lens (20), the variable focus lens (20) can be transformed into various shapes according to the operation of each actuator (30). Accordingly, the plurality of actuators (30) are arranged symmetrically from the center of the variable focus lens (20), so that the shape of the variable focus lens (20) can be precisely transformed by the operation of each actuator (30).

[0057] For example, the actuator (30) is composed of a one-sided actuator (31) and a other-sided actuator (32), and the one-sided actuator (31) and the other-sided actuator (32) can be symmetrically arranged on both sides of the variable focus lens (20).

[0058] In this way, a one-sided actuator (31) and a other-sided actuator (32) are connected to the one-sided and the other-sided actuator from the center of the variable focus lens (20), so that the shape of the variable focus lens (20) can be deformed to one-sided and the other-sided actuator depending on whether the one-sided actuator (31) and the other-sided actuator (32) are operated.

[0059] In this way, by precisely deforming the shape of the variable focus lens (20) using a plurality of actuators (30), light passing through the variable focus lens (20) can be accurately directed onto the part desired by the user.

[0061] Meanwhile, as illustrated in FIG. 6, the focus-variable lighting system according to the present invention comprises: a light source (10) installed indoors to irradiate light into an indoor space; a first variable focus lens (20A) configured to allow light from the light source (10) to be incident and to be flexibly deformable; a second variable focus lens (20B) configured to allow light passing through the first lens to be incident and to be flexibly deformable; a first actuator (30A) connected to the first variable focus lens (20A) to deform the first variable focus lens (20A) in the lateral direction of the indoor space upon input of a command signal; and a second actuator (30B) connected to the second variable focus lens (20B) to deform the second variable focus lens (20B) in the front-back direction of the indoor space upon input of a command signal. A controller (50) that transmits a command signal to a first driver (30A) and a second driver (30B) according to the input required lighting, thereby causing the first variable focus lens (20A) and the second variable focus lens (20B) to be deformed so that the irradiation position and irradiation shape of the light satisfy the required lighting.

[0062] Here, the light source (10) can be composed of an LED and can be installed in an indoor roof.

[0063] The first variable focus lens (20A) and the second variable focus lens (20B) are arranged sequentially in a direction away from the light source (10), so that light irradiated from the light source (10) passes through the first variable focus lens (20A) and the second variable focus lens (20B) and is irradiated into the indoor space. These first variable focus lens (20A) and the second variable focus lens (20B) are made of silicone material so that light is transmitted and can be flexibly deformed, so that the light is refracted according to the deformation shape of the first variable focus lens (20A) and the second variable focus lens (20B), and the position and shape of the irradiation of the light can be adjusted.

[0064] In particular, the first variable focus lens (20A) is connected to the first actuator (30A) and deforms in the lateral direction of the room, thereby changing the irradiation position and irradiation shape of the light, and the second variable focus lens (20B) is connected to the second actuator (30B) and deforms in the front-back direction of the room, thereby changing the irradiation position and irradiation shape of the light in the front-back direction.

[0065] As a result, the light irradiated from the light source (10) can be adjusted in a 360° direction from the initial position by the first variable focus lens (20A) and the second variable focus lens (20B).

[0066] These first actuator (30A) and second actuator (30B) are controlled by a controller (50). That is, the controller (50) transmits command signals to the first actuator (30A) and second actuator (30B) according to the required lighting input by the user operating a switch or the required lighting based on the user's location information identified through indoor sensors, thereby causing the irradiation position and irradiation shape of the light to satisfy the required lighting through the deformation of the first variable focus lens (20A) and the second variable focus lens (20B).

[0067] To describe the invention in detail, as shown in FIG. 7, the first driving unit (30A) is composed of a first X-axis synchronous unit (30A-1) and a second X-axis synchronous unit (30A-2), and the first X-axis synchronous unit (30A-1) and the second X-axis synchronous unit (30A-2) are arranged symmetrically to the left and right from the center of the first variable focus lens (20A).

[0068] Thus, the first X-axis synchronizer (30A-1) and the second X-axis synchronizer (30A-2) are connected to the left and right sides of the first variable focus lens (20A) from the center, so that the shape of the first variable focus lens (20A) can be deformed in the left and right directions depending on whether the first X-axis synchronizer (30A-1) and the second X-axis synchronizer (30A-2) are operated. As a result, the direction of illumination of the light from the light source (10) passing through the first variable focus lens (20A) can be adjusted in the left and right directions.

[0069] Accordingly, when the required light is input at a position spaced to the left from the installation position of the light source (10), the controller (50) transmits a command signal to the second X-axis synchronizer (30A-2) to cause the first variable focus lens (20A) to deform to the left, and when the required light is input at a position spaced to the right from the installation position of the light source (10), it transmits a command signal to the first X-axis synchronizer (30A-1) to cause the first variable focus lens (20A) to deform to the right.

[0070] In this way, the controller (50) determines whether the required lighting is to the left or right of the installation position of the light source (10), and accordingly transmits a command signal to the first X-axis synchronizer (30A-1) and the second X-axis synchronizer (30A-2) so that the first variable focus lens (20A) is deformed. That is, the controller (50) controls the first X-axis synchronizer (30A-1) and the second X-axis synchronizer (30A-2) according to the required lighting, and when a command signal is given to the first X-axis synchronizer (30A-1), the first X-axis synchronizer (30A-1) deforms the first variable focus lens (20A) to the right, thereby adjusting the focus of the light irradiated from the light source (10) to the right, and when a command signal is given to the second X-axis synchronizer (30A-2), the second X-axis synchronizer (30A-2) deforms the first variable focus lens (20A) to the left, thereby adjusting the focus of the light irradiated from the light source (10) to the left.

[0071] Meanwhile, when the controller (50) inputs that the required lighting spreads in the left and right directions from the installation position of the light source (10), it transmits a command signal to the first X-axis synchronizer (30A-1) and the second X-axis synchronizer (30A-2) so that the first variable focus lens (20A) is deformed to its initial shape or spread out in the left and right directions.

[0072] In this way, the controller (50) determines whether the required lighting is spreading in the left and right directions from the installation position of the light source (10), and controls the first X-axis synchronizer (30A-1) and the second X-axis synchronizer (30A-2) accordingly.

[0073] That is, the first variable focus lens (20A) is formed such that its initial shape is diffused and emitted upon incident light, and can be deformed into a contracted shape by the operation of the first X-axis synchronous motor (30A-1) and the second X-axis synchronous motor (30A-2). Accordingly, when the controller (50) inputs that the required lighting is to diffuse in the left and right directions from the installation position of the light source (10), the first X-axis synchronous motor (30A-1) and the second X-axis synchronous motor (30A-2) are deactivated from their original positions, thereby causing the light irradiated from the light source (10) to diffuse as the first variable focus lens (20A) takes its initial shape.

[0074] Additionally, when the first variable focus lens (20A) is deformed to spread out, the light is diffused. The controller (50) inputs command signals to the first X-axis synchronizer (30A-1) and the second X-axis synchronizer (30A-2), causing the first variable focus lens (20A) to spread out to the left and right by the operation of the first X-axis synchronizer (30A-1) and the second X-axis synchronizer (30A-2). As a result, the light passing through the first variable focus lens (20) is diffused, satisfying the required lighting.

[0075] In this way, the controller (50) can adjust the irradiation of light to a position that satisfies the required lighting by changing the shape of the first variable focus lens (20A) according to the user's switch operation or the user's location information.

[0076] Meanwhile, as shown in FIG. 8, the second actuator (30B) is composed of a first Y-axis actuator (30B-1) and a second Y-axis actuator (30B-2), and the first Y-axis actuator (30B-1) and the second Y-axis actuator (30B-2) can be arranged symmetrically in the front-rear direction from the center of the second variable focus lens (20B).

[0077] Thus, the first Y-axis synchronizer (30B-1) and the second Y-axis synchronizer (30B-2) are connected to the front and rear of the second variable focus lens (20B) from the center, so that the shape of the second variable focus lens (20B) can be deformed in the front and rear directions depending on whether the second Y-axis synchronizer (30B-2) of the first Y-axis synchronizer (30B-1) is operated. As a result, the irradiation direction of the light from the light source (10) passing through the second variable focus lens (20B) can be adjusted in the front and rear directions.

[0078] Accordingly, when the required light is input at a position spaced forward from the installation position of the light source (10), the controller (50) transmits a command signal to the second Y-axis synchronizer (30B-2) to cause the second variable focus lens (20B) to deform forward, and when the required light is input at a position spaced backward from the installation position of the light source (10), it transmits a command signal to the first Y-axis synchronizer (30B-1) to cause the second variable focus lens (20B) to deform backward.

[0079] In this way, the controller (50) determines whether the required lighting is in front or behind the installation location of the light source (10), and accordingly transmits a command signal to the first Y-axis synchronizer (30B-1) and the second Y-axis synchronizer (30B-2) so that the second variable focus lens (20B) is deformed. That is, the controller (50) controls the first Y-axis synchronizer (30B-1) and the second Y-axis synchronizer (30B-2) according to the required lighting, and when a command signal is given to the first Y-axis synchronizer (30B-1), the second Y-axis synchronizer (30B-2) deforms the second variable focus lens (20B) backward, thereby adjusting the focus of the light irradiated from the light source (10) backward, and when a command signal is given to the second Y-axis synchronizer (30B-2), the second Y-axis synchronizer (30B-2) deforms the second variable focus lens (20B) forward, thereby adjusting the focus of the light irradiated from the light source (10) forward.

[0080] Meanwhile, when the controller (50) inputs that the required lighting spreads in the forward and backward directions from the installation position of the light source (10), it transmits a command signal to the first Y-axis synchronizer (30B-1) and the second Y-axis synchronizer (30B-2) so that the second variable focus lens (20B) is deformed to its initial shape or spread out in the forward and backward directions.

[0081] In this way, the controller (50) determines whether the required lighting is spreading in the forward and backward directions from the installation location of the light source (10), and controls the first Y-axis synchronizer (30B-1) and the second Y-axis synchronizer (30B-2) accordingly.

[0082] That is, the second variable focus lens (20B) is formed such that its initial shape is diffused and emitted upon incident light, and it is deformed into a contracted shape by the operation of the first Y-axis synchronous motor (30B-1) and the second Y-axis synchronous motor (30B-2). Accordingly, when the controller (50) inputs that the required lighting is to diffuse in the forward and backward directions from the installation position of the light source (10), the first Y-axis synchronous motor (30B-1) and the second Y-axis synchronous motor (30B-2) are deactivated from their original positions, thereby allowing the light irradiated from the light source (10) to diffuse in the forward and backward directions as the second variable focus lens (20B) takes on its initial shape.

[0083] Additionally, when the second variable focus lens (20B) is deformed to spread out, the light is diffused. The controller (50) inputs command signals to the first Y-axis synchronizer (30B-1) and the second Y-axis synchronizer (30B-2) so that the second variable focus lens (20B) spreads out to the left and right by the operation of the first Y-axis synchronizer (30B-1) and the second Y-axis synchronizer (30B-2). As a result, the light passing through the second variable focus lens (20) is diffused, and the required lighting can be satisfied.

[0084] In this way, the controller (50) can adjust the irradiation of light to a position that satisfies the required lighting by changing the shape of the second variable focus lens (20B) according to the user's switch operation or the user's location information.

[0085] Meanwhile, the controller (50) controls the brightness of the light source (10) so that it decreases when the input required lighting is concentrated at a specific location, and increases the brightness of the light source (10) when the input required lighting is diffused.

[0086] That is, light irradiated from the light source (10) is concentrated or diffused according to the shape of the variable focus lens (20), and when the light is concentrated, the brightness of the light is relatively increased, and when the light is diffused, the brightness of the light is relatively decreased.

[0087] Accordingly, the controller (50) controls the driver (30) to control the light source (10) when light is concentrated through the variable focus lens (20) so that the brightness of the light decreases, and controls the light source (10) when light is diffused so that the brightness of the light increases, thereby reducing the sense of strangeness in the light irradiation due to light concentration or diffusion.

[0089] An example of the present invention according to the above description is described as follows.

[0090] As illustrated in FIG. 9, when light is to be irradiated to the front left side of the indoor space from the installation location of the light source (10), the second X-axis synchronizer (30A-2) in the first variable focus lens (20A) is operated to cause the first variable focus lens (20A) to be deformed to the left, and the second Y-axis synchronizer (30B-2) in the second variable focus lens is operated to cause the second variable focus lens (20B) to be deformed forward. As a result, when the light irradiated from the light source (10) passes through the first variable focus lens (20A), the irradiation position is adjusted to the left, and when it passes through the second variable focus lens (20B), the irradiation position is adjusted forward, so that the light is ultimately irradiated to the front left side of the indoor space.

[0091] Additionally, as illustrated in FIG. 10, when light is to be diffused from the installation location of the light source (10) to the rear of the indoor space, the first X-axis synchronous motor (30A-1) and the second X-axis synchronous motor (30A-2) in the first variable focus lens (20A) are returned to their original positions, causing the first variable focus lens (20A) to spread out to the left and right, and the first Y-axis synchronous motor (30B-1) in the second variable focus lens (20B) is operated, causing the second variable focus lens (20B) to deform to the rear. As a result, when the light irradiated from the light source (10) passes through the first variable focus lens (20A), the shape of the light is diffused, and when it passes through the second variable focus lens (20B), the irradiation position is adjusted to the rear, so that the light is ultimately irradiated to diffuse to the rear of the indoor space.

[0093] The focus-variable lighting device and focus-variable lighting system, which are structured as described above, use a single light source (10) to adjust the position of light irradiation to various locations in the indoor space, thereby reducing the installation space in the indoor roof and lowering the manufacturing cost.

[0095] Although the present invention has been illustrated and described in relation to specific embodiments, it will be obvious to those skilled in the art that the present invention can be modified and changed in various ways without departing from the technical spirit of the invention as provided by the following claims. Explanation of the symbols

[0097] 10: Light source 20: Variable focus lens 20A: 1st variable focus lens 20B: 2nd variable focus lens 21: Lens part 22: Connecting part 30: Actuator 31: One-sided actuator 32: Other side actuator 30A: First actuator 30A-1: 1st X-football motive 30A-2: 2nd X-football motive 30B: 2nd actuator 30B-1: 1st Y-axis synchronous motor 30B-2: 2nd Y Soccer Teammate 40: Fixed Department 50: Controller

Claims

Claim 1 A light source that emits light; a variable focus lens into which light from the light source is incident and configured to be deformable so that the position and shape of the light irradiation change according to the deformed shape; and a driver connected to the variable focus lens and which deforms the variable focus lens so that the position and shape of the light irradiation satisfy the command signal upon input of a command signal; wherein the variable focus lens comprises a lens part into which light from the light source is incident and which causes the incident light to be emitted with a focus, and a connecting part that extends from the edge of the lens part, is connected to the driver, and moves by the operation of the driver to deform the lens part. Claim 2 delete Claim 3 A focus-variable lighting device according to claim 1, characterized in that the lens portion is formed to protrude convexly toward the opposite side of the light source, and the focus is varied as the shape is deformed by the movement of the connecting portion. Claim 4 A focus-variable lighting device according to claim 1, characterized in that the lens portion is formed in a zigzag or curved shape and expands or contracts depending on whether the actuator is operated. Claim 5 A variable focus lighting device according to claim 1, characterized in that a portion of the frame of the variable focus lens is fixed through a fixed part, and a driver is connected to the variable focus lens on the opposite side of the fixed part. Claim 6 A focus-variable lighting device according to claim 1, characterized in that the actuator is composed of a plurality of actuators, and each actuator is arranged symmetrically from the center of the variable focus lens. Claim 7 A focus-variable lighting device according to claim 6, characterized in that the actuator is composed of a one-sided actuator and a other-sided actuator, and the one-sided actuator and the other-sided actuator are symmetrically arranged on both sides of a variable focus lens. Claim 8 A light source installed indoors to illuminate an indoor space; a first variable focus lens configured to allow light from the light source to be incident and to be flexibly deformable; a second variable focus lens configured to allow light passing through the first lens to be incident and to be flexibly deformable; a first actuator connected to the first variable focus lens to deform the first variable focus lens in the lateral direction of the indoor space upon input of a command signal; a second actuator connected to the second variable focus lens to deform the second variable focus lens in the front-back direction of the indoor space upon input of a command signal; and a controller that transmits a command signal to the first actuator and the second actuator according to the input required lighting to cause the first variable focus lens and the second variable focus lens to deform, thereby ensuring that the irradiation position and irradiation shape of the light satisfy the required lighting; wherein the controller controls the brightness of the light source to be variable when the input required lighting is concentrated or diffused at a specific location. Claim 9 A focus-variable lighting system according to claim 8, wherein the first actuator is composed of a first X-axis actuator and a second X-axis actuator, and the first X-axis actuator and the second X-axis actuator are arranged symmetrically to the left and right from the center of the first variable focus lens. Claim 10 A focus-variable lighting system according to claim 9, characterized in that the controller transmits a command signal to a second X-axis synchronizer to cause the first variable focus lens to deform to the left when the required lighting is input to a position spaced to the left from the installation position of the light source, and transmits a command signal to a first X-axis synchronizer to cause the first variable focus lens to deform to the right when the required lighting is input to a position spaced to the right from the installation position of the light source. Claim 11 A focus-variable lighting system according to claim 9, characterized in that the controller transmits a command signal to a first X-axis synchronizer and a second X-axis synchronizer so that when the required lighting is input to spread in the left-right direction from the installation position of the light source, the first variable focus lens is deformed to its initial shape or spread out in the left-right direction. Claim 12 A focus-variable lighting system according to claim 8, wherein the second actuator is composed of a first Y-axis actuator and a second Y-axis actuator, and the first Y-axis actuator and the second Y-axis actuator are arranged symmetrically in the front-rear direction from the center of the second variable focus lens. Claim 13 A focus-variable lighting system according to claim 12, characterized in that the controller transmits a command signal to a second Y-axis synchronizer to cause the second variable focus lens to deform forward when the required lighting is input at a position spaced forward from the installation position of the light source, and transmits a command signal to a first Y-axis synchronizer to cause the second variable focus lens to deform backward when the required lighting is input at a position spaced backward from the installation position of the light source. Claim 14 A focus-variable lighting system according to claim 12, characterized in that the controller transmits a command signal to a first Y-axis synchronizer and a second Y-axis synchronizer so that when the required lighting is input to spread in the front-rear direction from the installation position of the light source, the second variable focus lens is deformed to its initial shape or spread out in the front-rear direction. Claim 15 delete

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