Light-emitting system with protective goggles

Abstract

To provide a light-emitting system that can reliably prevent light from the light-emitting device from entering the eyes. [Solution] The light-emitting system comprises a light-emitting device 200 that emits light and protective goggles 300 that protect the user's eyes. The protective goggles comprise a communication module, a light-shielding unit 330, a light-shielding state sensor 340, and a control unit 310. The control unit instructs the light-shielding unit to transition to a light-shielding state based on a light-emitting preparation signal S1 from the light-emitting device, and then transmits a light-emitting permission signal S2 to the light-emitting device if the light-shielding state is confirmed based on the sensor output from the light-shielding state sensor. If the light-shielding state cannot be confirmed, the control unit performs fail-safe control by not transmitting a light-emitting permission signal. After transmitting the light-emitting preparation signal, the light-emitting device performs a light-emitting operation if it receives a light-emitting permission signal, and does not perform a light-emitting operation if it does not receive a light-emitting permission signal.

Description

Technical Field

[0005]

[0001] This specification discloses a technology related to a light-emitting system equipped with protective goggles.

Background Art

[0002] As protective goggles for protecting the vision of workers or operators in light-emitting devices that emit intense light, such as laser irradiation devices, welding devices, beauty lasers, and medical laser devices, protective goggles equipped with a passive automatic light-shielding function that shields light after detecting it are known. Patent Document 1 describes goggles equipped with an automatic light-shielding filter that protects the eyes of workers from harmful light rays at welding sites.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Since the protective goggles of Patent Document 1 are passive and shield light after detecting it, there is a problem that light may reach the eyes before shifting to the light-shielded state.

Means for Solving the Problems

[0005] One embodiment disclosed herein is a light-emitting system comprising a light-emitting device that emits light and protective goggles that protect the user's eyes. In this light-emitting system, the protective goggles include a communication module that communicates with the light-emitting device, a light-shielding unit positioned in front of the eyes that selectively switches between a light-transmitting state that allows light to pass through and a light-shielding state that blocks light, a light-shielding state sensor that detects the light-shielding state of the light-shielding unit, and a control unit that controls the light-shielding unit. The control unit instructs the light-shielding unit to transition to the light-shielding state based on a light-emitting preparation signal received from the light-emitting device via the communication module, and then transmits a light-emitting permission signal to the light-emitting device when it confirms that the light-shielding state has been achieved based on the sensor output from the light-shielding state sensor, and performs fail-safe control by not transmitting the light-emitting permission signal to the light-emitting device when it cannot confirm that the light-shielding state has been achieved. The light-emitting device performs a light-emitting operation when it receives the light-emitting permission signal after transmitting the light-emitting preparation signal, and does not perform a light-emitting operation when it does not receive the light-emitting permission signal. This type of light-emitting system avoids the light-emitting operation occurring before transitioning to a light-shielding state, and reliably prevents light from the light-emitting device from entering the eyes. [Brief explanation of the drawing]

[0006] [Figure 1] This is an explanatory diagram showing the overall configuration of the light-emitting system. [Figure 2] This is a block diagram showing the detailed configuration of the light-emitting device. [Figure 3] This is a block diagram showing the detailed configuration of protective goggles. [Modes for carrying out the invention]

[0007] Figure 1 is an explanatory diagram showing the overall configuration of the light emission system 100. The light emission system 100 comprises a light emission device 200 and protective goggles 300. The light emission device 200 is a laser irradiation device. The light emission device 200 may be other devices that emit strong light, such as welding equipment, cosmetic lasers, or medical laser devices. The protective goggles 300 are devices for protecting the user's eyes from the light rays RL emitted from the light emission device 200. The protective goggles 300 are worn on the head of the user of the light emission system 100.

[0008] Figure 2 is a block diagram showing the detailed configuration of the light-emitting device 200. The light-emitting device 200 comprises a control unit 210, a communication module 220, and a light-emitting unit 230.

[0009] The control unit 210 of the light-emitting device 200 controls various parts of the light-emitting device 200. The control unit 210 comprises a central processing unit (CPU) and memory for storing data. The control unit 210 realizes various functions by having the CPU execute computer programs stored in memory.

[0010] The communication module 220 of the light-emitting device 200 is an electronic component that enables data communication with the protective goggles 300 by the control unit 210. The communication module 220 enables data communication with the protective goggles 300 by wireless communication. The communication module 220 may also enable data communication with the protective goggles 300 by wired communication.

[0011] The light-emitting unit 230 of the light-emitting device 200 is an electrical and electronic component that integrates a light-emitting element and a drive circuit. The light-emitting unit 230 outputs a light beam RL based on the control signal from the control unit 210.

[0012] Figure 3 is a block diagram showing the detailed configuration of the protective goggles 300. The protective goggles 300 comprises a control unit 310, a communication module 320, a light-shielding unit 330, and a light-shielding state sensor 340.

[0013] The control unit 310 of the protective goggles 300 controls various parts of the protective goggles 300. The control unit 310 comprises a central processing unit (CPU) and memory for storing data. The control unit 310 realizes various functions by having the CPU execute computer programs stored in memory.

[0014] The communication module 320 of the protective goggles 300 is an electronic component that enables data communication with the light-emitting device 200 by the control unit 310. The communication module 320 enables data communication with the light-emitting device 200 by wireless communication. The communication module 320 may also enable data communication with the light-emitting device 200 by wired communication.

[0015] The light-shielding unit 330 of the protective goggles 300 is an electronic / electrical component that selectively switches between a light-transmitting state and a light-blocking state. The light-shielding unit 330 is positioned in front of the user's eyes. The light-shielding unit 330 is a liquid crystal shutter. The light-shielding unit 330 may also be a physical shutter.

[0016] The light-shielding state sensor 340 of the protective goggles 300 is a sensor that detects the light-shielding state of the light-shielding unit. The light-shielding state sensor 340 is located inside the light-shielding unit 330 and is a sensor that detects the amount of light transmitted from the outside of the light-shielding unit 330. The light-shielding state sensor 340 may also be a sensor that detects the liquid crystal driving voltage in the light-shielding unit 330. The light-shielding state sensor 340 may also be a sensor that detects the physical shutter position in the light-shielding unit 330.

[0017] The control unit 210 of the light-emitting device 200 transmits a light-emitting preparation signal S1 to the protective goggles 300 via the communication module 220 before driving the light-shielding unit 330 to output the light ray RL.

[0018] When the control unit 310 of the protective goggles 300 receives the light emission preparation signal S1 from the light emitting device 200 via the communication module 320, it instructs the light shielding unit 330 to shift to the light shielding state based on the light emission preparation signal S1. Thereafter, the control unit 310 determines whether or not the light shielding unit 330 has shifted to the light shielding state based on the sensor output from the light shielding state sensor 340.

[0019] When the control unit 310 of the protective goggles 300 confirms the establishment of the light shielding state of the light shielding unit 330, it transmits a light emission permission signal S2 to the light emitting device 200 via the communication module 320. On the other hand, when the establishment of the light shielding state of the light shielding unit 330 cannot be confirmed, the control unit 310 performs fail-safe control not to transmit the light emission permission signal S2 to the light emitting device 200.

[0020] When the control unit 210 of the light emitting device 200 receives the light emission permission signal S2 from the protective goggles 300 via the communication module 220 after transmitting the light emission preparation signal S1, it instructs the light shielding unit 330 to execute the light emission operation. On the other hand, when the light emission permission signal S2 from the protective goggles 300 cannot be received, the control unit 210 prohibits the light shielding unit 330 from executing the light emission operation.

[0021] According to the light emission system 100 described above, it is possible to avoid the light emission operation being performed before shifting to the light shielding state, and reliably prevent the light beam RL from the light emitting device 200 from entering the eyes.

[0022] The technology disclosed in this specification is not limited to the above-described embodiments, examples, and modifications, and can be realized in various configurations without departing from the gist thereof. For example, among the technical features in the above-described embodiments, examples, and modifications, those corresponding to the technical features in each form described in the summary of the invention column can be appropriately replaced and combined in order to solve some or all of the above-described problems, or to achieve some or all of the above-described effects. In addition, technical features that are not described as essential in this specification can be appropriately deleted.

Explanation of Signs

[0023] 100…Light emission system 200…Light emitting device 210…Control unit 220…Communication module 230…Light emitting unit 300…Protective goggles 310…Control unit 320…Communication module 330…Light shielding unit 340…Light shielding state sensor RL…Light ray S1…Light emission preparation signal S2…Light emission permission signal

Claims

[Claim 1] A light-emitting system comprising a light-emitting device and protective goggles to protect the user's eyes, The aforementioned protective goggles are A communication module that communicates with the aforementioned light-emitting device, A light-shielding unit positioned in front of the eye, which selectively switches between a light-transmitting state that allows light to pass through and a light-shielding state that blocks light, A light-shielding state sensor for detecting the light-shielding state of the light-shielding unit, A control unit that controls the light-shielding unit and Includes, The control unit, based on a light-emitting preparation signal received from the light-emitting device via the communication module, instructs the light-shielding unit to transition to the light-shielding state. If the establishment of the light-shielding state is confirmed based on the sensor output from the light-shielding state sensor, the control unit transmits a light-emitting permission signal to the light-emitting device. If the establishment of the light-shielding state cannot be confirmed, the control unit performs fail-safe control by not transmitting the light-emitting permission signal to the light-emitting device. The light-emitting device is a light-emitting system that performs a light-emitting operation when it receives a light-emitting permission signal after transmitting the light-emitting preparation signal, and does not perform a light-emitting operation when it does not receive the light-emitting permission signal.

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