GB2552257A - Digital loupe device and its image stabilizing method - Google Patents
Digital loupe device and its image stabilizing method Download PDFInfo
- Publication number
- GB2552257A GB2552257A GB1709361.8A GB201709361A GB2552257A GB 2552257 A GB2552257 A GB 2552257A GB 201709361 A GB201709361 A GB 201709361A GB 2552257 A GB2552257 A GB 2552257A
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- 238000000034 method Methods 0.000 title claims description 16
- 230000000087 stabilizing effect Effects 0.000 title claims description 16
- 230000033001 locomotion Effects 0.000 claims abstract description 11
- 210000003128 head Anatomy 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 230000002146 bilateral effect Effects 0.000 claims description 8
- 210000000744 eyelid Anatomy 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 3
- 230000002207 retinal effect Effects 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 241000282461 Canis lupus Species 0.000 description 4
- 238000002406 microsurgery Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 238000012800 visualization Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 208000003464 asthenopia Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 230000005804 musculo-skeletal problem Effects 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 230000001755 vocal effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B25/00—Eyepieces; Magnifying glasses
- G02B25/002—Magnifying glasses
- G02B25/004—Magnifying glasses having binocular arrangement
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B25/00—Eyepieces; Magnifying glasses
- G02B25/002—Magnifying glasses
- G02B25/005—Magnifying glasses with means for adjusting the magnifying glass or the object viewed
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0132—Head-up displays characterised by optical features comprising binocular systems
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0132—Head-up displays characterised by optical features comprising binocular systems
- G02B2027/0134—Head-up displays characterised by optical features comprising binocular systems of stereoscopic type
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0138—Head-up displays characterised by optical features comprising image capture systems, e.g. camera
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B2027/0178—Eyeglass type
Abstract
A digital loupe binocular device with image stabilisation comprises a wearable frame 1 with a pair of stereo display modules 5 and with axial rotation micro motors 2 providing vertical adjustment and axial rotation micromotors 3 providing lateral left and right adjustment of a pair of lighting capture modules 4 with lighting elements 41 and capturing elements 42 and sensor 43 connected to a control unit 7 which illuminate a target view and capture an image of the target view in order to send a feedback signal. The control unit, based on the feedback signal received that unintentional movement of the headset is detected, moves the lighting capture modules via the axial rotation modules until a pre-set location of the images is obtained. A pre-set light intensity may also be maintained by the controller.
Description
(56) Documents Cited by ISA:
US 20150123880 A1
G02B 27/01 (2006.01) (58) Field of Search by ISA:
INT CLA61B, G02B
Other: EPODOC, WPI, Patent Fulltext (87) International Publication Data:
WO2017/190463 Cn 09.11.2017 (71) Applicant(s):
Kai-Pok Tse
Flat 10, Block F, 13/F Man Hoi House,
Chun Man Court, Homantin, Kowloon, Hong Kong, China (72) Inventor(s):
Kai-Pok Tse Weng Kong Tam (74) Agent and/or Address for Service:
Chapman IP
Kings Park House, 22 Kings Park Road,
Southampton, Hampshire, SO15 2AT, United Kingdom (54) Title of the Invention: DIGITAL LOUPE DEVICE AND ITS IMAGE STABILIZING METHOD Abstract Title: Digital loupe device with image stabilisation (57) A digital loupe binocular device with image stabilisation comprises a wearable frame 1 with a pair of stereo display modules 5 and with axial rotation micro motors 2 providing vertical adjustment and axial rotation micromotors 3 providing lateral left and right adjustment of a pair of lighting capture modules 4 with lighting elements 41 and capturing elements 42 and sensor 43 connected to a control unit 7 which illuminate a target view and capture an image of the target view in order to send a feedback signal. The control unit, based on the feedback signal received that unintentional movement of the headset is detected, moves the lighting capture modules via the axial rotation modules until a pre-set location of the images is obtained. A pre-set light intensity may also be maintained by the controller.
FIG.5
1/5
FIG. 1
PRIOR ART
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PRIOR ART
3/5
FIG.4
4/5 \\
I i
FIG.5
5;
5/5 the Sighting capture modules capture the image of the operation view
EZ the operator presets an idea! light intensity
| ··'........................................ | |
| the operator pres of the operation > a displacement tf | ets the location /tew and presets treshoid |
intensity of the operation view equal to preset intensity
v
*<the control unit adjusts the light intensity via the Sighting element of the Sighting capture module till the ideal light intensity is obtained yes
Ψ the centra! unit controls the axtai rotation modules pair to move backward to the location of the preset image
FIG.6
DIGITAL LOUPE DEVICE AND ITS IMAGE STABILIZING METHOD
BACKGROUND OF THE INVENTION
Field of the Invention
The present invention relates to a digital microsurgical visualization device. More specifically, the invention comprises a digital loupe device and an image stabilizing method. The device optionally replaces the conventional surgical loupe and microscope. The stabilizing method helps to reduce shaky image viewed by the operator.
Description of Prior Art
Microsurgery has been increasingly being practiced in hospitals. Medical surgeons are often required to manipulate very small hard and soft tissue which is usually difficult to be observed by un-aided eyes. Some of those tiny surgical objects, such as vascular structure, nerve and other tissue, may have the diameter of less than 1mm. Precise magnifying equipment, thus, is crucial for a microsurgery.
Please refer to FIG. 1 and FIG. 2, two most commonly used surgical visual tools, namely binoculars surgical loupes and binocular surgical microscope are showed. The features of surgical loupe and microscope are compared and shown in the below table.
| Loupes | Microscopes | |
| magnification | 2.5, 3.0, 3.5, 4.0, 4.5X | 6X - 25X |
| Adjustable magnification | No | Yes |
| focal length | Fixed | Adjustable |
| wearable | Yes | No |
| comfortable | Yes | No |
| field of view | Large | Small |
| portability | Yes | No |
| Cost | Low | High |
However, the above two optical instruments have weaknesses.
Firstly, they require the operating surgeons keeping at some fixed working distance and posture throughout the whole operation. Hence, it leads to musculoskeletal problems and pain, especially, over the back spines of surgeons.
Secondly, prolonged focusing through optical lens in the loupe or microscope during surgery will cause eye strains.
Thirdly, in high magnification mode, the magnified view shifts unsteadily with unintentional movement of the observer's head. Such motion increases focusing difficulty and further affect/damage/endanger visibility. These complications of using the surgical loupes and microscopes a re not only harmful to the health of the surgeons, but directly affect the performance of the operation and quality of the treatment.
The present invention provides a sophisticated surgical digital visualization device that solves the above-mentioned complications.
SUMMARY OF THE INVENTION
This invention proposes a digital loupe device and its image stabilizing method for microsurgical visualization. The device overcomes the above weakness, which comprises:
A wearable frame; a pair of axial rotation modules at the same horizontal level mounted to the bilateral side of said wearable frame; a pair of lighting capture modules separately attached to said axial rotation modules; a pair of display modules electronically connected with the control unit and fixed to said wearable frame for image display purpose; a control unit electronically connected to the axial rotation modules, the lighting capture modules and display modulus.
The pair of lighting capture modules capture a pair images of the operation view at a selected location, wherein, the preset image is the intersection portion of the two images captured by the bilateral lighting capture modules at the selected location, when the wearable frame move unintentionally, the pair of lighting capture modules capture the shifted images, the central unit estimates the shift distance and direction by comparing the coordinate change of preset image and the shifted image, the central unit control the axial rotation modules to move backward to the location of the preset image according to the estimated shifted distance and direction, the pair of lighting capture modules capture and update the preset image, the pair of display modulus display the images captured by the pair of lighting capture modules.
The said wearable frame is a supporting set or a supporting frame attached to the head of operator.
The said axial rotation modules further comprise first axial rotation modules to provide vertical movement of the lighting capture modules and second axial rotation modules to provide lateral movement of the lighting capture modules.
The said first axial rotation modules further has a first micro motor which drives the first axial rotation modules rotating, and the second axial rotation modules also has a second micro motor which drives the second axial rotation modules rotating, the first micro motor and the second micro motor are electronically connected with the control unit.
Each of the said lighting capture modules comprises a lighting element, a capturing element and a sensor, the sensor is used to receive operator's command.
The said display module is a Virtual Retinal Display, LCOS projection display, LCD display, LED display or data glass.
The device further comprises plural of connectors that connect the display modules to the wearable frame.
The said control unit can be set exteriorly or be integrated in the lighting capture module or in the wearable frame.
The digital loupe device utilizes an image stabilizing method which captures and stabilizes the shaky image by the following steps:
A. the digital loupe is worn on the head of the operator, the lighting capture modules capture the image of the operation view, the central unit transmits the image signals and display it on the display modulus, operator selects the location of the operation view and set it as the preset location, wherein, the preset image is the intersection portion of the two images captured by the bilateral lighting capture modules at the preset location; B. when the head of the operator move unintentionally, the shaky movement of the digital loupe leads to a shift of image location captured by the lighting capture modules; C. the central unit estimates the shifted distance and direction by comparing the coordinate change of preset image and the shifted image; D. the central unit controls the axial rotation modules pair, or the operator can manually control the axial rotation modules pair by command, to move backward to the location of the preset image according to the estimated shift distance and direction.
The operator presets a displacement threshold in the central unit, in step D, the central unit moves the axial rotation modules only when the image shift exceeds the displacement threshold.
In step A, the preset image is the intersection portion of the two images captured by the bilateral lighting capture modules at the preset location.
Since the content of the view changes during operation, the central unit periodically updates the preset image.
The operator preset an ideal light intensity in the central unit. When the light intensity of the view differs from the preset intensity, the central unit adjusts the light intensity via the lighting element of the lighting capture module till the ideal light intensity is obtained.
The display modules are set at the lower eyelids level in front of the eyes.
The operator sets the image, in step A, through the control unit by the sensor signals triggered by sound, vibration, pressure, light or forces.
BRIEF DESCRIPTION OF DRAWING
FIG. 1 shows a prior-art binoculars surgical loupe.
FIG. 2 shows a prior-art binocular surgical microscope.
FIG. 3 is the schematic diagram of the front view of the present invention.
FIG. 4 is the schematic diagram ofthe lateral view ofthe present invention.
FIG. 5 is the schematic diagram of the top view of the present invention.
FIG. 6 is the flowchart of the image stabilizing method of the present invention.
DESCRIPTION OF LABELS
1: wearable frame 2: first axial rotation module
21: first micro motor 3: second axial rotation module
31: second micro motor 4: lighting capture module
41: lighting element
42: capturing element
43: sensor 5: display module 6: connector 7: control unit
DETAILED DESCRIPTION OFTHE INVENTION
The detailed description and technical contents of the present invention will become apparent with the following detailed description accompanied with related drawings. It is noteworthy to point out that the drawings is provided for the illustration purpose only, but not intended for limiting the scope ofthe present invention.
Figs. 3 to 5 show a preferred embodiment of the digital loupe device of the present invention. The digital loupe device is preferably a wearable or head-mounted device that is worn on the surgeon's head. The surgeon can observe a magnified surgical view on the display modules 5 ofthe digital loupe device.
The digital loupe device comprises a wearable frame 1, a pair of lighting capture modules 4, at least one axial rotation modules 2, 3, a pair of display modules 5 and at least one control unit 7. The wearable frame 1 is preferably an eyeglass or headmounted frame. The wearable frame 1 can be worn on the surgeon's head. Here the wearable frame 1 is used as a framework for holding the lighting capture modules 4 and display modules 5 on the surgeon's head near the eyes. The lighting capture modules 4 are separately attached to opposite lateral sides of the wearable frame 1 in symmetry through the first axial rotation modules 2 and the second axial rotation modules 3, as shown in Fig. 5. The first axial rotation modules 2 and the second axial rotation modules 3 are connected with the lighting capture modules 4 and mounted to the wearable frame 1, and are electronically connected to the control unit 7. Through the control signal transmitted from the control unit 7, the first axial rotation modules 2 enable vertical rotation (up and down) of the lighting capture modules 4 and the second axial rotation modules 3 enable lateral rotation (left and right) of the lighting capture modules 4. The display modules 5 are located in front of the wearable frame 1 and connected to the wearable frame 1 on both sides through the connectors
6. In the illustration shown in Figs. 3 and 4, the lighting capture modules 4 are preferably positioned laterally at the same level of the operator's eyes and the display modules 5 at the lower eyelids level in front of the eyes.
A lighting capture module 4 further comprises a lighting element 41, a capturing element 42 and a sensor 43. At least one lighting element 41 and at least one capturing element 42 are electronically connected to the control unit 7. The capturing element 42 records the surgical view images and sends feedback signal electronically to the control unit 7. With the control signal from the control unit 7, the light intensity and focus of the surgical view can be adjusted through the lighting element 41 accordingly. The feedback signal can change the target surgical view by adjusting the orientation of the lighting capture modules 4 through rotating the first axial rotation modules 2 and the second axial rotation modules 3. The zooming function of the capturing element 42 enables zoom in/out of the images and provides changeable magnification of the surgical view. The auto-focusing function of the capturing element 42 allows the surgical view at varying distances to be in focus and provides changeable working distance for surgeon. Furthermore, the first axial rotation modules 2 has a first micro motor 21 which drives the first axial rotation modules 2 rotating, and the second axial rotation modules 3 also has a second micro motor 31 which drives the second axial rotation modules 3 rotating. The first micro motor 21 and the second micro motor 31 are electronically connected with the control unit 7.
It is worth noted that the lighting capture modules 4 attached to opposite lateral sides of said wearable frame 1 in symmetry are crucial to generate a stereo image of target surgical view in human brain. A surgical operator can precisely put his hands in positions at space according to the stereo views. In other words, non-stereo image will lead to loss of depth perception of the surgeon. Thus, the exact distance of the target surgical view will be missed, and the surgeon cannot control his hands precisely. Therefore, a three-dimensional image of target surgical view is very important in performing precise surgical operation especially in micro-surgery.
As shown in Fig. 4, the display modules 5 are connected directly on both sides of the wearable frame 1 through the connectors 6. The display modules 5 are electronically connected with the control unit and fixed to said wearable frame 1 for image display purpose. The display modules 5, provide small screens which show the magnified surgical view, are positioned in front of the eyes. The actual position of the display modules 5 is equivalent to the position of the traditional optical loupes worn by the surgeons. The display module 5 is preferably a Virtual Retinal Display (VRD), but can also be any kind of digital displays (such as, but not limited to, LCD, LED, data glass...).
As shown in Fig. 5, the sensor 43 built inside the lighting capture module 4 receives command signal by the operator to control the functions inside the digital loupe device. The signal may be, but not limited to, a verbal, touch, electronically or wireless transmitted command. An example is that when the surgeon wants to adjust to a higher magnified surgical view, he says the word magnify. The sensor 43 will receive the command and send feedback signal to the control unit 7. The control unit 7 will adjust the capturing element 42 to zoom in the images and show the magnified images on the display modules 5.
The control unit 7 is either built inside the lighting capture module 4 or remotely located. If the control unit 7 is located at a remote site, its connections to the lighting capture module 4, the display modules 5, the, the first axial rotation modules 2 and the second axial rotation modules 3 will be set through wireless or cable transmission.
Fig. 6 shows the image stabilizing method of the present invention.
A. The operator wears the device and the display modules 5 are set at the lower eyelids level in front of the eyes. The capturing element 42 captures a surgical view. The control unit 7 displays the surgical image on the display modules 5. Through the sensor 43 signals triggered by sound, vibration, pressure, light or forces, the operator selects the location of the operation view and set it as the preset location, wherein, the preset image is the intersection portion of the two images captured by the bilateral lighting capture modules 4 at the preset location. The operator also presets a displacement threshold in the control unit 7 through the sensor 43. Furthermore, the operator presets an ideal light intensity in the central unit. During the surgery, the operator can manually control the control unit 7 to execute the required commands.
B. During the microsurgery, any shaky or unintentional movement of the head may cause a displacement of the wearable frame 1, which in turn cause the capturing element 42 of the lighting capture modules 4 captures a displaced image.
C. The central unit 7 estimates the shifted distance and direction by comparing the coordinate change of preset image and the shifted image.
D. If the displacement of location larger than the displacement threshold set forth in system, the adjustment of view is required. Then the control unit 7, based on the reported displacement result, moves the lighting capture module 4 via the first axial rotation modules 2 and the second axial rotation modules 3 in order to keep the shifted surgical view back to the preset location. If the result also revealed an inappropriate light intensity of the image, either brighter or darker than the threshold set forth in system, the adjustment of light intensity is required. Then the control unit 7, based on the reported light intensity result, adjusts the lighting element 41 to provide proper light intensity on the surgical view in order to keep the image in good brightness condition for the operator.
It is important to note that the content of the surgical view may change periodically during operation. The central unit 7 will periodically update the preset image.
The invention and its image stabilizing method guarantee ideal intensity and stable image for the surgeon throughout the surgery.
Although the present invention has been described with reference to the foregoing preferred embodiment, it will be understood that the invention is not limited to the details thereof. Various equivalent variations and modifications can still occur to those skilled in this art in view of the teachings of the present invention. Thus, all such variations and equivalent modifications are also embraced within the scope of the invention as defined in the appended claims.
Claims (14)
1. A digital loupe device for viewing microscopic view, the digital loupe device comprising:
a wearable frame;
a pair of axial rotation modules at the same horizontal level mounted to the bilateral side of said wearable frame;
a pair of lighting capture modules separately attached to said axial rotation modules;
a pair of display modules electronically connected with the control unit and fixed to said wearable frame for image display purpose;
a control unit electronically connected to the axial rotation modules, the lighting capture modules and display modulus;
the pair of lighting capture modules capture a pair images of the operation view at a selected location, wherein, the preset image is the intersection portion of the two images captured by the bilateral lighting capture modules at the selected location, when the wearable frame move unintentionally, the pair of lighting capture modules capture the shifted images, the central unit estimates the shifted distance and direction by comparing the coordinate change of preset image and the shifted image, the central unit control the axial rotation modules to move backward to the location of the preset image according to the estimated shift distance and direction, the pair of lighting capture modules capture and update the preset image, the pair of display modulus display the images captured by the pair of lighting capture modules.
2. The digital loupe device as in claim 1, wherein the wearable frame is a supporting set or a supporting frame attached to the head of operator.
3. The digital loupe device as in claim 1, wherein the axial rotation modules further comprise first axial rotation modules to provide vertical movement of the lighting capture modules and second axial rotation modules to provide lateral movement of the lighting capture modules.
4. The digital loupe device as in claim 3, wherein the first axial rotation modules further has a first micro motor which drives the first axial rotation modules rotating, and the second axial rotation modules also has a second micro motor which drives the second axial rotation modules rotating, the first micro motor and the second micro motor are electronically connected with the control unit.
5. The digital loupe device as in claim 1, wherein each of the lighting capture modules comprises a lighting element, a capturing element and a sensor, the sensor is used to receive operator's command.
6. The digital loupe device as in claim 1, wherein the display module is a Virtual Retinal Display, LCOS projection display, LCD display, LED display or data glass.
7. The digital loupe device as in claim 1, wherein the device further comprises plural of connectors that connect the display modules to said wearable frame.
8. The digital loupe device as in claim 1, wherein the control unit can be set exteriorly or be integrated in the lighting capture module or in the wearable frame.
9. An image stabilizing method utilized by the digital loupe device as in claim 1, captures and stabilizes the shaky image by the following steps:
A. the digital loupe is worn on the head of the operator, the lighting capture modules capture the image of the operation view, the central unit transmits the image signals and display it on the display modulus, operator selects the location of the operation view and set it as the preset location, wherein, the preset image is the intersection portion of the two images captured by the bilateral lighting capture modules at the preset location;
B. when the head of the operator move unintentionally, the shaky movement of the digital loupe leads to a shift of image location captured by the lighting capture modules;
C. the central unit estimates the shifted distance and direction by comparing the coordinate change of preset image and the shifted image;
D. the central unit controls the axial rotation modules pair, or the operator can manually control the axial rotation modules pair by command, to move backward to the location of the preset image according to the estimated shifted distance and direction.
10. The image stabilizing method as in claim 9, wherein the operator presets a displacement threshold in the central unit, in step D, the central unit moves the axial rotation modules only when the image shift exceeds the displacement threshold.
11. The image stabilizing method as in claim 9, wherein the central unit periodically updates the preset image.
12. The image stabilizing method as in claim 9, wherein the operator presets an ideal light intensity in the central unit, the control unit receives the image intensity signal, compares the light intensity preset by the operator with the light intensity of the image, adjusts the light intensity via the lighting elements of the lighting capture modules till the ideal light intensity is obtained.
13. The image stabilizing method as in claim 9, wherein the display modules are set at the lower eyelids level in front of the eyes..
14. The image stabilizing method as in claim 9, wherein the operator presets the image, in step A, through the control unit by the sensor signals triggered by sound, vibration, pressure, light or forces.
io
Intellectual
Property
Office
GB1709361.8
1-14
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610299253.2A CN106856560A (en) | 2015-12-09 | 2016-05-06 | Image capturing device for operation and image capturing method thereof |
| PCT/CN2016/099786 WO2017190463A1 (en) | 2015-12-09 | 2016-09-23 | Surgical image capturing device and image capturing method therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201709361D0 GB201709361D0 (en) | 2017-07-26 |
| GB2552257A true GB2552257A (en) | 2018-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1709361.8A Withdrawn GB2552257A (en) | 2016-05-06 | 2016-09-23 | Digital loupe device and its image stabilizing method |
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| Country | Link |
|---|---|
| GB (1) | GB2552257A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11006093B1 (en) | 2020-01-22 | 2021-05-11 | Photonic Medical Inc. | Open view, multi-modal, calibrated digital loupe with depth sensing |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150123880A1 (en) * | 2013-11-04 | 2015-05-07 | Weng-Kong TAM | Digital loupe device |
-
2016
- 2016-09-23 GB GB1709361.8A patent/GB2552257A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150123880A1 (en) * | 2013-11-04 | 2015-05-07 | Weng-Kong TAM | Digital loupe device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11006093B1 (en) | 2020-01-22 | 2021-05-11 | Photonic Medical Inc. | Open view, multi-modal, calibrated digital loupe with depth sensing |
| WO2021150921A1 (en) * | 2020-01-22 | 2021-07-29 | Photonic Medical Inc | Open view, multi-modal, calibrated digital loupe with depth sensing |
| US11166006B2 (en) | 2020-01-22 | 2021-11-02 | Photonic Medical Inc. | Open view, multi-modal, calibrated digital loupe with depth sensing |
| US11412202B2 (en) | 2020-01-22 | 2022-08-09 | Photonic Medical Inc. | Open view, multi-modal, calibrated digital loupe with depth sensing |
| US11611735B2 (en) | 2020-01-22 | 2023-03-21 | Photonic Medical Inc. | Open view, multi-modal, calibrated digital loupe with depth sensing |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201709361D0 (en) | 2017-07-26 |
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