Lighting Devices with Automatic Lighting Adjustment

Patent metadata

Field	Value
Publication number	US-2020008282-A1
Application number	US-201816023516-A
Country	US
Kind code	A1
Filing date	Jun 29, 2018
Priority date	Jun 29, 2018
Publication date	Jan 2, 2020
Grant date	—

Abstract

Lighting systems and associated controls that can provide active control of lighting device settings, such as on/off, color, intensity, focal length, beam location, beam size and beam shape. In some examples, lighting systems may include eye tracking technology and sensor feedback for one or more lighting device settings and may be configured with depth perception and cavity or incision recognition capability through image or video processing.

First claim

1 . A method of controlling a lighting device, comprising:
receiving, at a processor, position sensor data, the position sensor data representing a position of at least one of a user's head and a user's eyes; determining, by the processor, whether the user is looking at a task area based on the position sensor data; and controlling, by the processor, an intensity of light emitted by the lighting device or turning the light on or off in response to determining whether the user is looking at the task area.

2 . The method of claim 1 , wherein:
the position sensor data is head position sensor data indicating a position of a user's head; and determining whether the user is looking at the task area comprises:
calculating, by the processor, an angle of the user's head from the head position sensor data; and
determining, by the processor, whether the calculated angle is within a first range of angles associated with the user looking at the task area.

3 . The method of claim 1 , wherein:
the position sensor data is eye position sensor data indicating a position of a user's eyes; and determining whether the user is looking at the task area comprises:
determining, by the processor, whether the eye position sensor data is within a first range of positions associated with the user looking at the task area.

4 . The method of claim 3 , wherein the first range of positions are associated with the user looking through loupes.

5 . The method of claim 3 , further comprising:
determining, by the processor, a location where the user is looking based on the eye position sensor data; and controlling, by the processor, a location of a beam of light emitted by the lighting device to be substantially coincident with the location where the user is looking.

6 . The method of claim 3 , wherein the eye position sensor data is collected by an eye position sensor, and the method further comprises:
pointing the lighting device at a first one of a plurality of targets; recording sensor data from the eye position sensor while a user is looking at the first one of the plurality of targets; and determining a set of calibrating parameters for translating a coordinate of the sensor data to a lighting device coordinate.

7 . The method of claim 6 , wherein the set of calibration parameters are parameters of a two-dimensional linear approximation.

8 . The method of claim 6 , wherein the set of calibration parameters represent a translation and a rotation of a coordinate system of the eye position sensor to a coordinate system of the lighting device.

9 . A lighting system, comprising:
a lighting device; a position sensor; and a processor coupled to the lighting device and position sensor configured to:
receive position sensor data from the position sensor, the position sensor data representing a position of at least one of a user's head and a user's eyes;
determine whether the user is looking at a task area based on the position sensor data; and
control an intensity of light emitted by the lighting device or turn the light on or off in response to determining whether the user is looking at the task area.

10 . The system of claim 9 , wherein:
the position sensor is a head position sensor; the position sensor data indicates a position of a user's head; and the processor is further configured to:
calculate an angle of the user's head from the position sensor data; and
determine whether the calculated angle is within a first range of angles associated with the user looking at the task area.

11 . The system of claim 9 , wherein:
the position sensor is an eye position sensor; the position sensor data indicates a position of a user's eyes; and the processor is further configured to determine whether the position sensor data is within a first range of positions associated with the user looking at the task area.

12 . The system of claim 11 , wherein the first range of positions are associated with the user looking through loupes.

13 . The system of claim 11 , wherein the processor is further configured to:
determine a location where the user is looking based on the position sensor data; and control a location of a beam of light emitted by the lighting device to be substantially coincident with the location where the user is looking.

14 . The system of claim 11 , wherein the processor is further configured to:
point the lighting device at a first one of a plurality of targets; record sensor data from the eye position sensor while a user is looking at the first one of the plurality of targets; and determine a set of calibrating parameters for translating a coordinate of the sensor data to a lighting device coordinate.

15 . The system of claim 14 , wherein the set of calibration parameters are parameters of a two-dimensional linear approximation.

16 . The system of claim 14 , wherein the set of calibration parameters represent a translation and a rotation of a coordinate system of the eye position sensor to a coordinate system of the lighting device.

17 . A method of controlling a surgical lighting device, comprising:
capturing, by an image capture device, an image of a surgery field; detecting, with a processor, an incision in the image; determining, with the processor, at least one property of the incision; and adjusting, by the processor, at least one setting of the surgical lighting device to illuminate the incision based on the at least one property of the incision.

18 . The method of claim 17 , wherein the at least one property of the incision comprises at least one of a size, shape, and depth of the incision.

19 . The method of claim 17 , wherein:
determining at least one property of the incision comprises determining a size of the incision; and adjusting at least one setting of the surgical lighting device comprises adjusting a beam size according to the determined size of the incision.

20 . The method of claim 17 , wherein:
determining at least one property of the incision comprises determining a shape of the incision; and adjusting at least one setting of the surgical lighting device comprises adjusting a beam shape according to the determined shape of the incision.

21 . The method of claim 17 , wherein:
determining at least one property of the incision comprises determining a depth of the incision; and adjusting at least one setting of the surgical lighting device comprises adjusting a beam focal length or intensity according to the determined depth of the incision.

22 . The method of claim 17 , further comprising:
matching, by the processor, the detected incision with a first incision in a plurality of incisions stored in an incision database, the incision database associating each of the plurality of incisions with a predefined surgical lighting device setting; wherein adjusting at least one setting of the surgical lighting device comprises adjusting the at least one setting to correspond to the predefined surgical lighting device setting associated with the first incision.

23 . A lighting system, comprising:
an image capture device configured to capture an image of a surgery field; a surgical lighting device; and a processor coupled to the image capture device and the surgical lighting device configured to:
detect an incision in the image;
determine at least one property of the incision; and
adjust at least one setting of the surgical lighting device to illuminate the incision

Assignees

• Pereyra Rodrigo M
• Olsen Joseph A
• Sarkisian Alan
• Sharma Siddhant
• Osram Sylvania Inc

Inventors

• Pereyra Rodrigo M
• Olsen Joseph A
• Sarkisian Alan
• Sharma Siddhant

Classifications

• A61B90/30

  Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure · CPC title

• G06T7/74

  involving reference images or patches · CPC title

• G06T7/0016

  involving temporal comparison · CPC title

• G06T7/50

  Depth or shape recovery · CPC title

• A61B5/163

  by tracking eye movement, gaze, or pupil change · CPC title