A DENTAL LIGHT IRRADIATION DEVICE

Abstract

A dental light irradiation device has a first light source for emitting blue light, a camera and at least a first detector. The device is operable in a camera mode in which the camera is activated and in a non-camera mode in which the camera is deactivated. In the non-camera mode a user input on the first detector activates the camera mode. The dental light irradiation device helps facilitating the proper curing of a dental material in a patient's mouth.

Claims

1. A dental light irradiation device comprising a first light source for emitting blue light, a camera and at least a first detector, wherein the device is operable in a camera mode in which the camera is activated and in a non-camera mode in which the camera is deactivated, wherein in the non-camera mode a user input on the first detector activates the camera mode.

2. The dental light irradiation device of claim 1, wherein in the camera mode a detection of a freeze image instruction of the user input via the first detector triggers a freeze of an image captured by the camera and a detection of a camera-off instruction of the user input via the first detector causes the device to switch in the non-camera mode.

3. The dental light irradiation device of claim 1, further comprising a sleep mode, in which the camera and the first light source are deactivated, wherein the non-camera mode is activated by waking up the device from the sleep mode.

4. The dental light irradiation device of claim 1, further comprising a gyro sensor that in the sleep mode monitors an acceleration of the device and causes the non-camera mode to activate upon sensing an acceleration.

5. The dental light irradiation device of claim 1, further comprising a second detector, wherein in either of the non-camera mode and the camera mode a user input on the second detector activates a cure operation of the dental light irradiation device, wherein in the cure operation the first light source is activated.

6. The dental light irradiation device of claim 5, wherein the cure operation comprises at least a default cure operation and a tack cure operation, wherein in either of the non-camera mode and the camera mode a detection of a start cure instruction of the user input via the second detector activates the default cure operation, and a detection of a tack cure instruction of the user input via the second detector activates the tack cure operation, wherein in the default cure operation the first light source is automatically activated for a pre-determined first time period after which the first light source is automatically deactivated, and wherein in the tack cure operation the first light source is automatically activated for a pre-determined second time period after which the first light source is automatically deactivated, and wherein the second time period is shorter than the first time period.

7. The dental light irradiation device of claim 6, further comprising a third detector for adjusting or pre-selecting the first time period.

8. The dental light irradiation device of claim 7, wherein the first and the third detector each comprise at least one push button or touch sensor, and wherein the second detector comprises two push buttons or two touch sensors arranged on opposite sides of the dental light irradiation device.

9. The dental light irradiation device of claim 6, wherein the start cure and the tack cure instruction are each based on a duration for which a user input is maintained on the second detector, wherein the start cure instruction is associated to a first duration and the tack cure instruction is associated to a different second duration.

10. The dental light irradiation device of claim 1, wherein a detection of a video start instruction of the user input via the first detector triggers the recording of a video via the camera, and a detection of a camera-off instruction of the user input via the first detector causes the device to switch in the non-camera mode.

11. The dental light irradiation device of claim 3, wherein in the sleep mode a detection of a camera-on instruction of the user input via the first detector activates the camera mode, and the detection of a start cure instruction of the user input via the first detector activates a cure operation of the dental light irradiation device, wherein in the cure operation the first light source is activated.

12. The dental light irradiation device of claim 1, further comprising a second light source for emitting white light.

13. The dental light irradiation device of claim 12, wherein the first and second light source and the camera are arranged adjacent each other and adjacent an end of an intra-oral tip of the dental light irradiation device.

14. The dental light irradiation device of claim 1, comprising a wireless communication interface for transmitting image data captured by the camera to a wireless network.

Description

BRIEF DESCRIPTION OF THE FIGURES

[0030] FIG. 1 is a perspective view of a dental light irradiation device according to an embodiment of the invention; and

[0031] FIG. 2 is a flow chart illustration certain functions of the dental light irradiation device according to an embodiment of the invention.

DETAILED DESCRIPTION OF THE INVENTION

[0032] FIG. 1 shows a dental light irradiation device 1. The dental light irradiation device 1 has a camera 2, a first light source 3 for emitting blue light and a second light source 4 for emitting white light. The first light source 3 comprises a plurality of blue LEDs (Light Emitting Diodes), but may in another example be formed of a single blue LED. Further, the second light source 4 comprises a plurality of white LEDs. Again, alternatively the second light source 4 may be formed of a single white LED. The camera 2 may be a CCD or CMOS based camera, or may be based on any other appropriate technology. In the example, the camera 2 as well as the first and second light source 3, 4 are accommodated in a tip portion 5 of the dental light irradiation device 1. Other configurations are possible. For example, the camera, the first and/or the second light source may be accommodated in a handle portion 6 of the dental light irradiation device 1 with (an) associated light guide(s) extending between the tip portion 5 and the camera, the first and/or the second light source.

[0033] The dental light irradiation device 1 in the example is an overall wireless device, but may in another example be wired. In the example the light irradiation device 1 has a rechargeable battery (not visible). For charging the battery a charging device may be provided (not shown) by which the battery can be charged. For charging the battery the light irradiation device 1 may be connected to the charging device in a contactless manner or by electrical contact-based connection.

[0034] The dental light irradiation device 1 has a first, second and third detector for operation the device 1 as described in the following. In the example, the first, second and third detector are provided in the form of a first, second and third push button. Further, the dental light irradiation device 1 has a gyro sensor (not visible) for monitoring a movement or acceleration of the device 1 and for initiating operations of the device as described in the following.

[0035] FIG. 2 shows a flowchart illustrating the function of the dental light irradiation device. The dental light irradiation device is basically operable in two alternative modes, namely a camera mode C and a non-camera mode N. In addition the dental light irradiation device can operate in a sleep mode S.

[0036] In the sleep mode S generally the camera and the first and second light source are deactivated. The dental light irradiation device automatically activates the sleep mode S if no user input is detected via the first, second and third detector for a predetermined idle time period, for example of 5 minutes (S4). Other time periods may be predetermined as appropriate.

[0037] Further, the dental light irradiation device preferably activates the sleep mode S if, in addition to the absence of any user input on the first, second and/or third detector, the gyro sensor does not sense any motion or acceleration of the device within the predetermined idle time period (S1).

[0038] Independent of the automatic activation of the sleep mode due to the absence of a user input or movement of the device, the dental light irradiation device is set up to preferably immediately switch into the sleep mode upon connecting the device to a charging unit (S5). In case a charging unit is connected and recognized by the device an automatic charging program is activated which checks the charge state of the battery and charges the battery dependent thereon.

[0039] Once the device is in the sleep mode S the device is waked up in case one of the following incidents occur: [0040] the device is disconnected from the charging unit (S3), [0041] a movement of the device is detected by the gyro sensor or [0042] in case a user input is detected via one of the first, second and third detectors (S2).
Waking up the device causes, by default, the non-camera mode to activate. In the non-camera mode the camera is deactivated (switched off). However, the non-camera mode provides several operations N0, N1, N2, N3, N4 of the device that can be selectively activated under the non-camera mode.

[0043] N0 in the flowchart designates an idle operation of the dental light irradiation device. In the idle operation N0 the camera and the first and second light source are deactivated. However, the first, second and third detectors are monitored for a user input.

[0044] N1 in the flowchart designates a curing time preselection operation for adjusting a first time period. The first time period is the time period for which the first light source is automatically activated and after which the first light source is automatically deactivated. The curing time preselection operation N1 is activated in case a user input is detected on the third detector. Each user input (N11) on the third detector, for example each push and release on the third push button, may increase (N12) the first time period by a certain time increment, for example 5 seconds. Once a maximum time period is reached (for example 20 seconds) a further user input on the third detector preferably causes the first time period to be reset on a minimum time period (for example 5 seconds). The dental light irradiation device automatically returns in the idle operation N0 once the curing time preselection operation N1 ends.

[0045] N2 designates a default cure operation. In case a user input is detected via the second detector the device evaluates that user input for a presence of a start cure instruction. The start cure instruction in the example is characterized by a duration between a push and the next release of the second push button that is below a predetermined time, in the example below one second. This means that the start cure instruction is recognized in case the duration of the user input is shorter than one second. In case the start cure instruction is recognized (N21) the device activates the default cure mode in which the first light source is activated (N22) for the first time period. The operation of the first light source may be interrupted (N23) in case a further user input is detected on the second detector. Otherwise the first light source is automatically deactivated after lapse of the first time period (N24). The dental light irradiation device automatically returns in the idle operation N0 once the default cure operation N2 ends.

[0046] N3 designates a tack cure operation. In case a user input is detected via the second detector the device further evaluates that user input for a presence of a tack cure instruction. The tack cure instruction in the example is characterized by a duration between a push and the next release of the second push button that exceeds a predetermined time, in the example reaches one second or more. This means that the tack cure instruction is recognized in case the user input lasts one second or more. In case the tack cure instruction is recognized (N31) the device activates the tack cure mode in which the first light source is activated (N32) for one second before the first light source is automatically switched off. The dental light irradiation device automatically returns in the idle operation N0 once the tack cure operation N3 ends.

[0047] N4 designates the activation of the camera mode. In case a user input of the first detector, for example a push and release on the first push button, is detected (C41) the device is activated in the camera mode C in which the camera is switched on. By default the camera mode C operates in a real-time camera operation (C0) in which images captured by the camera are transmitted real-time to a display, for example a computer screen or tablet. The image transmission is preferably performed by a wireless data transmission.

[0048] The camera mode provides several operations C0, C1, C2, C3, C4, C5 and C6 of the device that can be selectively activated under the camera mode.

[0049] C1, C2, and C3 are identical to the operations N1, N2 and N3, respectively, although in C1 to C3 the camera is activated while in N1 to N3 the camera is deactivated. The same applies for C11, C12 which is identical to N11, N12, respectively. C21, C22, C23, C24 is identical to N21, N22, N23, N24, respectively, and C31, C32 is identical to N31, N32, respectively.

[0050] C4 designates an image capturing operation. In case a user input is detected on the first detector that user input is evaluated for the presence of a freeze image instruction (C41). In the example the freeze image instruction is characterized by a duration between a push and the next release of the first push button that is shorter than one second. Once the freeze image instruction is recognized the device is switched in an image freeze operation C42. In the image freeze operation the image displayed at the moment at which the freeze image instruction was recognized is frozen. For example, the transmission of the image captured at the moment the freeze image instruction was recognized may be maintained (while the transmission of the real-time image is suspended). In case a user input is detected on the first detector during the freeze operation C42 the device switches either back to the real-time camera operation C0 or to a snapshot operation C43 in which a photo of the frozen image is stored, depending on the input instruction recognized from the user input. For example, in case the input instruction is characterized by a push and release on the first push button for a duration of below one second (C421), the device switches back to the real-time camera operation C0. In case the input instruction is characterized by a duration between the push and release of one second or more of the first push button (C422), the snapshot operation C43 is activated. Once the photo is taken and stored the snapshot operation automatically finishes and the device returns to the real-time camera mode C0.

[0051] C5 designates an optional video operation. In case a user input is detected on the first detector that user input is evaluated for the presence of a video start instruction (C51). In the example the video start instruction is characterized by a double push and release on the first push button (similar to a double click on a computer). The recognition of the video start instruction triggers the recording of a video from the images captured by the camera (C52). The recording stops as soon as a further user input is detected (C53) on the first detector. The device returns to the real-time camera mode C0 automatically after.

[0052] C6 designates a camera off operation. In case a user input is detected on the first detector that user input is evaluated for the presence of a camera-off instruction (C61). In the example the camera-off instruction is characterized by a duration between a push and release of the first push button of more than three seconds.

[0053] During the execution of the default cure operation N2 or C2 the switching between the camera mode and the non-camera mode is disabled. In particular, most preferably during the execution of the default cure operation C2 in the camera mode switching to the non-camera mode is disabled. This means that an operation of the first detector during the execution of the default cure mode does not have any effect. Thus, it can be prevented that a user, for example a dentist, switches the to the non-camera mode while monitoring the curing of a dental material in a patient's mouth on a display. Accordingly, due to the fact that an eye protection is not required for monitoring the curing via the display, it can be prevented that the user starts monitoring the curing on a display without eye protection but suddenly is required to directly look towards intense light emitted by the dental light irradiation device. Therefore, the safety in handling of the device is maximized.