CN115901807A - Glass component detection device, packaging structure, laser emitter and detection method - Google Patents
Glass component detection device, packaging structure, laser emitter and detection method Download PDFInfo
- Publication number
- CN115901807A CN115901807A CN202211182571.2A CN202211182571A CN115901807A CN 115901807 A CN115901807 A CN 115901807A CN 202211182571 A CN202211182571 A CN 202211182571A CN 115901807 A CN115901807 A CN 115901807A
- Authority
- CN
- China
- Prior art keywords
- glass component
- module
- visible light
- detection
- glass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention provides a glass component detection device which comprises a glass component, wherein the top and the bottom of the glass component are respectively provided with a filter layer for transmitting invisible light and reflecting visible light; the glass component detection device also comprises a light-emitting module which is arranged on one side of the glass component and is used for emitting visible light; the light-emitting module comprises a plurality of visible light sources; the glass component detection device also comprises a detection module which is arranged at the other side of the glass component and is opposite to the light-emitting module, and the detection module is provided with a plurality of detection elements which are used for detecting visible light which is emitted by each visible light source and is transmitted to the other side of the glass component through multiple reflections; the glass component detection device further comprises a control module and a first power supply module. The glass component detection device, the packaging structure of the light-emitting device, the laser emitter and the glass component detection method provided by the invention can effectively identify whether the glass component is damaged or not, avoid the damage or unnecessary trouble of a human body caused by using damaged glass and have good safety.
Description
Technical Field
The invention belongs to the technical field of glass component detection and light-emitting device packaging, and particularly relates to a glass component detection device, a light-emitting device packaging structure, a laser emitter and a glass component detection method.
Background
The use of damaged glass may bring unpredictable risks, and particularly in laser transmitters, such as VCSEL laser emitting products (vertical cavity surface emitting lasers), it is necessary to ensure that laser power supply is timely turned off after a diffuiser glass (i.e., micro-nano optical glass) carrier is damaged and failed, so as to avoid damage to people caused by laser energy. In the prior art, whether Diffuser glass is damaged or not is lack of effective monitoring, particularly, the glass is difficult to find when being locally damaged or cracked, if the glass is locally damaged and cracked, laser leakage is caused, a human body can be directly exposed to the laser, the risk of being directly irradiated exists, and potential safety hazards are caused.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a glass component detection device, a packaging structure of a light-emitting device, a laser emitter and a glass component detection method.
The technical scheme of the invention is as follows: a glass component detection device comprises a glass component, wherein a filter layer for transmitting invisible light and reflecting visible light is arranged on the top and the bottom of the glass component; the glass component detection device also comprises a light-emitting module which is arranged on one side of the glass component and is used for emitting visible light; the light-emitting module comprises a plurality of visible light sources; the glass component detection device also comprises a detection module which is arranged on the other side of the glass component and is opposite to the light-emitting module, and the detection module is provided with a plurality of detection elements which are used for detecting visible light which is emitted by each visible light source and is transmitted to the other side of the glass component through multiple reflections; the glass component detection device further comprises a control module and a first power supply module, wherein the control module is connected with the visible light source and used for controlling the detection element, and the first power supply module is connected with the control module.
As a further improvement of the present technical solution, the control module includes an emission control module connected to each of the visible light sources and configured to individually control the visible light sources to emit light, and a reception control module connected to each of the detection elements and configured to individually control the detection elements to receive visible light.
As a further improvement of the technical scheme, the device also comprises a second power supply module connected to the detection module.
As a further improvement of the technical solution, each of the visible light sources is arranged at equal intervals, and each of the detecting elements is arranged at equal intervals corresponding to each of the visible light sources.
As a further improvement of the technical solution, the light-emitting module is provided with one and is arranged on a first side of the glass component, and the detection module is correspondingly provided with one and is arranged on a second side of the glass component; the filter layer is provided in plurality, and a plurality of filter layers are provided on the other side surfaces of the glass component except for the first side and the second side.
As a further improvement of the technical scheme, two light-emitting modules are arranged, and each light-emitting module comprises a first light-emitting module and a second light-emitting module; the first light emitting module is arranged on the first side of the glass component, and the second light emitting module is arranged on the second side of the glass component; the first side is adjacent to the second side;
the detection module comprises a first detection module and a second detection module, and the first detection module is arranged on the third side of the glass component and is opposite to the first light-emitting module; the third side is adjacent to the fourth side; the second detection module is arranged on the fourth side of the glass component and is opposite to the second light-emitting module.
As a further improvement of the present technical solution, the detection module is a PD module capable of converting an optical signal into an electrical signal, and the detection element is a PD element.
The invention also provides a packaging structure of the light-emitting device, which is provided with the glass component detection device.
The invention also provides a laser transmitter which is provided with the packaging structure of the light-emitting device.
The invention also provides a glass component detection method, which adopts the glass component detection device to detect the integrity of the glass component and comprises the following steps:
controlling each visible light source to emit visible light through the control module;
each detection element respectively detects visible light which is emitted by the corresponding visible light source and is transmitted to the other side of the glass component through multiple reflections and outputs a signal value to judge the integrity of the glass component;
if the signal value output by the detection element exceeds the normal value range, judging that the glass component is damaged; the normal value is a signal value output by the detection element when the glass component is in a good state.
The invention provides a glass component detection device, a packaging structure of a light-emitting device, a laser emitter and a glass component detection method, wherein the glass component detection device is used for detecting the integrity of a glass component, a light-emitting module is arranged on one side of the glass component, a detection module is arranged on the other side of the glass component, the light-emitting module is provided with a plurality of visible light sources, the control module is used for controlling the visible light sources to independently emit light, the emitted visible light is transmitted to the other side of the glass component through multiple reflections, a detection element arranged opposite to the visible light sources can be used for detecting and outputting a signal threshold value so as to judge the integrity of the glass component, the damage or the crack of the local area of the glass component can be effectively identified, the damage or the crack can be found in time, the damage or the unnecessary trouble of a human body caused by using the damaged glass component can be avoided, the practicability is good, and the safety and the reliability are realized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a glass inspection apparatus according to an embodiment of the present invention;
FIG. 2 is another schematic structural diagram of a glass inspection device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a glass inspection device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a laser transmitter according to an embodiment of the present invention;
FIG. 5 is a block diagram of a circuit provided by an embodiment of the invention;
FIG. 6 is a block diagram of another circuit provided by an embodiment of the invention;
fig. 7 is a block diagram of another circuit provided by an embodiment of the invention.
Reference numbers in the figures:
1-glass component, 2-filter layer, 3-luminous module, 31-visible light source, 4-detection module, 41-detection element, 5-substrate, 6-chip, 7-bracket and 100-laser emitter.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, directly disposed or connected, or indirectly disposed or connected through intervening elements or intervening structures.
In addition, in the embodiments of the present invention, if there are terms of orientation or positional relationship indicated by "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., it is only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the structure, feature, device or element referred to must have a specific orientation or positional relationship, nor must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The various features and embodiments described in the embodiments may be combined in any suitable manner, for example, different embodiments may be formed by combining different features/embodiments, and in order to avoid unnecessary repetition, various possible combinations of features/embodiments in the present invention will not be described in detail.
As shown in fig. 1 to 3 and 5, a glass component detection device according to an embodiment of the present invention includes a glass component 1, wherein a filter layer 2 is disposed on both a top and a bottom of the glass component 1, and the filter layer 2 is configured to transmit invisible light and reflect a visible light band; the glass component detection device further comprises a light-emitting module 3, wherein the light-emitting module 3 is arranged on one side of the glass component 1 and is used for emitting visible light; the light emitting module 3 includes a plurality of visible light sources 31, in this embodiment, the plurality of visible light sources 31 are sequentially arranged on one side of the glass member 1; the glass component detection device further comprises a detection module 4 arranged on the other side of the glass component 1, the detection module 4 is arranged opposite to the light emitting module 3, the detection module 4 is provided with a plurality of detection elements 41, each detection element 41 is arranged opposite to each visible light source 31, and each detection element 41 is used for detecting visible light which is emitted by each visible light source 31 and is transmitted to the other side of the glass component 1 through multiple reflections; the glass component detection device further comprises a control module, wherein the control module is connected to the visible light source 31 and the detection element, and is used for controlling the visible light source 31 and the detection element and connecting to a first power supply module of the control module. When the signal value detected by the detection element 41 by the control module exceeds the normal value range (the normal value is the signal value output by the detection element in a perfect state, the normal value can be used as a reference standard to judge whether the glass component is damaged), that is, the glass component 1 is damaged, the visible light is leaked when being transmitted to the damaged part, and the visible light reflection is interrupted or reduced, that is, the damaged part is a light outlet of the visible light, so that the visible light is completely or partially leaked, the damage or crack of the glass component 1 can be judged by judging whether the signal value detected by the detection element 41 exceeds the normal value range, the control module can output feedback signals such as alarm signals, state signals and control signals to other components according to the detection result, thereby avoiding the use of the damaged glass component, causing human body damage or unnecessary trouble, improving the use safety, and the glass component detection device has a simple structure and good practicability.
In the specific application, the glass component 1 may be diffuiser glass (i.e., micro-nano optical glass), sapphire glass, crystal glass, borosilicate glass, cobalt glass, etc., it should be understood that glasses of different materials have different physical properties, and can absorb and reflect visible light of different wavelengths, and the visible light source 31 may be arranged according to different glass materials, so that the visible light source 31 emits visible light of specific wavelengths, and the test effect is more accurate. In some embodiments, the visible light sources 31 in the same light emitting module 3 may be configured to emit visible light of the same wavelength. It is understood that different degrees of damage have different effects on different wavelengths of visible light, and in other embodiments, the visible light sources 31 in the same light-emitting module 3 may be configured to emit visible light with different wavelengths, so as to more accurately analyze the damage of the glass component 1.
In a specific application, when the glass component detection apparatus provided in this embodiment is specifically applied to a package structure of a light emitting device (e.g., a laser emitter), as shown in fig. 4, the laser emitter 100 includes a glass component 1, a substrate 5, a chip 6 and a support 7 mounted on the substrate 5, and a glass component detection apparatus, where the support 7 forms a space for mounting the chip, the glass component 1 is mounted above the support 7 and the chip 6, the glass component detection apparatus includes the above-mentioned specific structure, which is not described herein again, and the specific chip 6 may be a VCSEL chip, that is, a chip that emits laser light perpendicular to a surface of a resonant cavity. When the glass component 1 is damaged or cracked, a user can recognize the damage or the crack through naked eyes (the local part of the glass component 1 has visible light leakage), and the control module can output a feedback signal, such as an audible and visual alarm signal, to remind the user; or the control module can output a control signal to control the laser transmitter 100 to be powered off in time; or, in another embodiment, the control module receives the signal value of the detection element 41, judges whether the glass is damaged or not according to the change of the signal value, when the glass component 1 is damaged or cracked, the visible light detected by the detection element 41 arranged oppositely exceeds the normal value range, and judges that the glass component 1 is damaged or cracked and triggers the power supply to be disconnected, so that the burn caused by the laser irradiation to any part of the human body is avoided, the permanent damage to the retina caused by the direct vision laser of the eyes is avoided, the risk of the direct irradiation of the laser to the human body is greatly reduced, the use safety is improved, the structure is simple, and the practicability is good.
In another embodiment, as shown in fig. 6, the control module includes an emission control module connected to each of the visible light sources 31 and configured to individually control the light emission of each of the visible light sources 31, that is, the emission control module enables each of the visible light sources 31 to individually emit visible light, so as to more accurately detect the integrity of the glass component; and the receiving control module is connected with each detection element and is used for independently controlling each detection element to receive the visible light, namely, the receiving control module can enable each detection element to independently receive the visible light so as to output a signal value more accurately and enable a detection result to be more accurate. The receiving control module can judge whether the glass component is damaged or not according to the signal detected by the detection element and output feedback signals, such as alarm signals, state signals, control signals and the like.
In a specific application, the glass component detection apparatus is specifically applied to the laser transmitter 100, each visible light source 31 in the light emitting module 3 is independently controlled by an emission control module, that is, a plurality of visible light sources 31 can be controlled by the same emission control module, each detection element 41 in the detection module 4 is independently controlled by a reception control module, that is, a plurality of detection elements 41 can be controlled by the same reception control module, by setting a sampling frequency, for example, in some embodiments, the sampling frequency is set to 0.5S, that is, the interval time of sampling is 0.5S, the emission control module controls a first visible light source 31 to emit visible light, then the reception control module controls a first detection element to receive visible light, and observe a signal value output by the detection element 41, if the signal value exceeds a normal value range, it is determined that the glass component 1 is damaged, a power supply of the laser is turned off, if the signal value output by the detection element is within the normal value range, it is determined that the glass component 1 is not damaged, after the first visible light source emits visible light for 0.5S, the emission control module controls a second visible light source to emit visible light, the second reception control module to monitor damage of the glass component, and prevent the damage of the glass component, thereby, and monitoring the damage of the glass component in real-time.
In other embodiments, as shown in fig. 1, the light emitting module 3 has a plurality of equally spaced visible light sources 31, and the detecting module 4 has a plurality of detecting elements 41 that are equally spaced with respect to each of the visible light sources, it can be understood that each detecting element 41 is disposed in one-to-one correspondence with each of the opposite visible light sources 31, that is, the number of detecting elements is the same, and can receive the visible light that is emitted by the corresponding visible light source 31 and reflected for multiple times, so as to improve the accuracy of detection.
In another embodiment, as shown in fig. 1, the light-emitting module 3 is disposed on a first side of the glass member 1, and the detecting module 4 is correspondingly disposed on a second side of the glass member 1; the plurality of filter layers 2 are provided, and the plurality of filter layers 2 may be provided on the remaining side surfaces of the glass member 1 except for the first side and the second side. In specific application, when only one group of light-emitting modules 3 is arranged, the rest of the side surfaces of the glass component 1 except the first side and the second side can be provided with the filter layers 2, so that the visible light is effectively prevented from leaking from the rest of the side surfaces of the glass component 1 after being emitted by the visible light source positioned at the first side and cannot reach the second side to be detected by the detected element 41 after being reflected for multiple times, the partial failure of the glass component 1 to reflect the visible light is avoided, and the detection result is more reliable. In other embodiments, the integrity of the glass needs to be separately detected, and in the case that only one set of the light emitting module 3 and the detecting module 4 is provided, the rest of the side surfaces of the glass component 1 may also be shielded by a blackboard or a light trap (a device that makes the entering light unable to escape), or the side surfaces may not be shielded, and the detection is directly performed in a darkroom.
In another embodiment, as shown in fig. 2, two light emitting modules 3 are provided, including a first light emitting module 3 and a second light emitting module 3; the first light-emitting module 3 is arranged on a first side of the glass component 1, and the second light-emitting module 3 is arranged on a second side of the glass component 1; the first side is adjacent to the second side; the detection module 4 comprises a first detection module 4 and a second detection module 4, wherein the first detection module 4 is arranged on the third side of the glass part 1 and is opposite to the first light-emitting module 3; the third side is adjacent to the fourth side; the second detection module 4 is disposed on the fourth side of the glass component 1 and is opposite to the second light emitting module 3, and the accuracy and precision of detection are improved by detecting signal values in different directions.
Further, the glass member 1 is a diffuiser glass. In specific application, the Diffuser glass is micro-nano optical glass, specifically, the Diffuser glass comprises glass and an optical microstructure glue layer stamped on the glass, and the Diffuser glass can be directly purchased and obtained in the market.
Further, the detection module 4 is a PD module capable of converting an optical signal into an electrical signal, and the detection element 41 is a PD element. Specifically, a PD element (PhotoDiode) can convert an optical signal into an electrical signal, and the detection result is reliable.
In a specific application, as shown in fig. 7, the power supply module in the glass component detection apparatus may include a second power supply module connected to the detection module 4, the first power supply module provided for the light emitting module 3 is a constant direct current, and the second power supply module provided for the PD element in the detection module 4 is a reverse voltage.
Further, the light emitting module 3 is an LED module, and the visible light source 31 is an LED light source, which is low in cost and easy to install.
Further, the filter layer 2 is a visible light filter film, and may be formed on the glass component 1 by vacuum sputtering, for filtering light with different ranges of electromagnetic wave wavelengths, in this embodiment, the filter layer 2 may transmit invisible light and reflect visible light, that is, invisible light (the wavelength of the electromagnetic wave is less than 380 nm or greater than 780 nm) may transmit through the filter film, and visible light (the wavelength of the electromagnetic wave is between 380 nm and 780 nm) may reflect, and in another embodiment, the filter layer 2 may also be a visible light filter attached to the top and the bottom of the glass component 1.
The embodiment of the invention also provides a laser transmitter 100, and the laser transmitter 100 has the above packaging structure.
The embodiment of the invention also provides a detection method of the glass component 1, the detection method of the glass component 1 adopts the packaging structure to detect the integrity of the glass component 1, and the detection method comprises the following steps:
the control module controls each visible light source 31 to emit visible light; specifically, the visible light source 31 is an LED light source, which is low in cost and simple to install.
The detecting elements 41 respectively detect the visible light emitted from the opposite visible light sources 31 and transmitted to the other side of the glass member 1 through multiple reflections and output signal values to judge the integrity of the glass member 1. Specifically, when the signal value detected by the detection element 41 changes (i.e., exceeds the normal value range), that is, when the glass component 1 is cracked or damaged and is transmitted to the cracked or damaged position, the visible light leaks, and the reflection is interrupted or reduced, that is, the cracked or damaged position is a light outlet for visible light, so that the visible light leaks completely or partially, and the glass component 1 can be determined to be damaged or cracked, and a user can timely identify and interrupt the power supply and stop using the laser device with the glass component; or, in another embodiment, the detection method further comprises a step of triggering power-off, which comprises that the detection element 41 detects that the signal value changes, judges that the glass component 1 is damaged or cracked, and triggers a power-off switch. In other embodiments, the laser further comprises a signal processor for controlling the working state of the laser according to the signal detected by the detection element 41, and when the signal value detected by the detection element 41 exceeds a normal value, the signal processor can turn off the laser, or make the laser enter a sleep state, or send an alarm signal to remind a user that the laser is out of order.
The glass component detection device and the packaging structure of the light-emitting device, the laser emitter and the glass component detection method provided by the embodiment of the invention are characterized in that the glass component detection device is adopted in the glass component detection method to detect the integrity of a glass component, the light-emitting module 3 is arranged on one side of the glass component 1, the detection module 4 is arranged on the other side of the glass component 1, the light-emitting module 3 is provided with a plurality of visible light sources 31, the control module is used for controlling the visible light sources 31 to independently emit light, the emitted visible light is transmitted to the other side of the glass component 1 through multiple reflections, the detection element 41 arranged opposite to the visible light sources 31 can detect and output a signal value to judge the integrity of the glass component 1, if the signal value output by the detection element exceeds a normal value range, the damage of the glass component is judged, the normal value is the signal value output by the detection element under the intact state of the glass component, the damage or the crack of the local area of the glass component 1 can be effectively identified, and can be found in time, so that the risk brought by using the damaged glass is greatly reduced, the practicability is good, and the safety and the reliability are realized.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The glass component detection device is characterized by comprising a glass component, wherein the top and the bottom of the glass component are provided with filter layers for transmitting invisible light and reflecting visible light; the glass component detection device also comprises a light-emitting module which is arranged on one side of the glass component and is used for emitting visible light; the light-emitting module comprises a plurality of visible light sources; the glass component detection device also comprises a detection module which is arranged at the other side of the glass component and is opposite to the light-emitting module, and the detection module is provided with a plurality of detection elements which are used for detecting visible light which is emitted by each visible light source and is transmitted to the other side of the glass component through multiple reflections; the glass component detection device further comprises a control module and a first power supply module, wherein the control module is connected with the visible light source and used for controlling the detection element, and the first power supply module is connected with the control module.
2. The glazing component detection device of claim 1, wherein the control module comprises an emission control module coupled to each of the visible light sources for individually controlling the emission of light from each of the visible light sources, and a reception control module coupled to each of the detection elements for individually controlling the reception of visible light by each of the detection elements.
3. The glazing component detection device of claim 1, further comprising a second power module coupled to the detection module.
4. The glazing component detection device of claim 1, wherein each of the visible light sources is equally spaced, and wherein each of the detection elements is equally spaced with respect to each of the visible light sources.
5. The glass part inspection device according to claim 1, wherein the light emitting module is disposed on a first side of the glass part, and the inspection module is disposed on a second side of the glass part; the filter layer is provided in plurality, and a plurality of filter layers are provided on the other side surfaces of the glass component except for the first side and the second side.
6. The glazing component detection device as claimed in claim 1, wherein there are two of the light emitting modules, including a first light emitting module and a second light emitting module; the first light emitting module is arranged on the first side of the glass component, and the second light emitting module is arranged on the second side of the glass component; the first side is adjacent to the second side;
the detection module comprises a first detection module and a second detection module, and the first detection module is arranged on the third side of the glass component and is opposite to the first light-emitting module; the third side is adjacent to the fourth side; the second detection module is arranged on the fourth side of the glass component and is opposite to the second light-emitting module.
7. The glass part inspection device according to any one of claims 1 to 6, wherein the inspection module is a PD module that can convert an optical signal into an electrical signal, and the inspection element is a PD element.
8. A package structure of a light emitting device, characterized in that the package structure has the glass member inspection device of any one of claims 1 to 7.
9. A laser transmitter having a package structure of the light emitting device according to claim 8.
10. A glass member inspection method for inspecting the integrity of a glass member using the glass member inspection device as set forth in claims 1 to 7, comprising the steps of:
controlling each visible light source to emit visible light through the control module;
each detection element respectively detects visible light which is emitted by the corresponding visible light source and is transmitted to the other side of the glass component through multiple reflections and outputs a signal value to judge the integrity of the glass component;
if the signal value output by the detection element exceeds the normal value range, judging that the glass component is damaged; the normal value is a signal value output by the detection element when the glass component is in a good state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211182571.2A CN115901807A (en) | 2022-09-27 | 2022-09-27 | Glass component detection device, packaging structure, laser emitter and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211182571.2A CN115901807A (en) | 2022-09-27 | 2022-09-27 | Glass component detection device, packaging structure, laser emitter and detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115901807A true CN115901807A (en) | 2023-04-04 |
Family
ID=86473394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211182571.2A Pending CN115901807A (en) | 2022-09-27 | 2022-09-27 | Glass component detection device, packaging structure, laser emitter and detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115901807A (en) |
-
2022
- 2022-09-27 CN CN202211182571.2A patent/CN115901807A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3715904B1 (en) | Time of flight assembly, terminal device and control method for time of flight assembly | |
| CN106453725B (en) | Terminal device | |
| AU2006251047B9 (en) | A flame detector and a method | |
| EP1864167A2 (en) | Fiber optic transceiver module having built-in test capability and associated method | |
| WO2008036468A2 (en) | System and method for built-in testing of a fiber optic transceiver | |
| CN208496111U (en) | A kind of reflection light detection device for laser cutting head | |
| US20090116025A1 (en) | Field test of a retro-reflector and detector assembly | |
| US6225621B1 (en) | Laser photoelectric sensor | |
| CN110596047B (en) | Visibility sensor, self-cleaning method thereof and calibration method thereof | |
| US5262636A (en) | Proximity sensor apparatus for laser diode | |
| CN115901807A (en) | Glass component detection device, packaging structure, laser emitter and detection method | |
| CN105223113A (en) | A kind of electrical control dish cabinet dust detection | |
| JP2024513902A (en) | Optical assembly detection system for laser radar and laser radar | |
| CN112362134A (en) | Liquid level position detection device and detection method | |
| CN106324381B (en) | A kind of electric arc optical detection device | |
| CN202710683U (en) | Static electricity testing device | |
| CN210835245U (en) | Laser emission module and electronic equipment | |
| CN210834094U (en) | Broadband modulation optical filter performance detection device | |
| CN110225225B (en) | Depth information camera module with laser monitoring function, electronic equipment and laser monitoring method | |
| CN114284841A (en) | Optical fiber laser and control method thereof | |
| CN210347934U (en) | Distance detection device and aircraft | |
| CN205647484U (en) | Diffuse reflection photoelectric switch | |
| CN105897237A (en) | Regression reflection photoelectric switch | |
| CN103134437B (en) | Measurement jig and method of testing | |
| CN218290069U (en) | Elevator door closing protection circuit and device based on TOF and elevator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |