High-resolution slit lamp angular measurement add-on device
AssigneeParsa BarazandehNoveyri
InventorBehzad BarazandehNoveyri
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Abstract
The present disclosure provides a high-resolution angle measuring device couplable to ophthalmic systems to determine the precise angle of rotation when using the ophthalmic system. The high-resolution angle measuring device enables accurate measurement of the horizontal angle of rotation of a slit beam from a slit lamp system (precise angles over the cornea of a patient). The proposed angle measuring device provides a compact, affordable and easy-to-use device able to measure and determine angular change of devices it is coupled to and used with.
Claims20
An angle measuring device couplable to and for use with a slit lamp of the type having a slit light source producing a slit beam, the slit light source being mounted to be rotatable about a vertical axis, the slit lamp having a mirror to direct the slit beam horizontally with rotation of the slit beam being about a horizontal axis, the angle measuring device for use in determining an angle of rotation of the angle measuring device indicative of a horizontal angle of rotation of the slit beam, the angle measuring device comprising:
- a housing comprising:
- sensors comprising a Micro-Electro-Mechanical Systems (MEMS) gyroscope paired with MEMS accelerometers for measuring data comprising information about angular velocity and acceleration of the angle measuring device;
- and
- a microcontroller connected the sensors for determining the angle of rotation of the angle measuring device based on the data measured by the sensors;
- a coupling member shaped to be coupled to a light source outer body of the slit light source of the slit lamp and for supporting the housing;
- and
- one of the group consisting of:
- I. a display on said housing for displaying the determined angle of rotation;
- II. a wireless data transceiver for providing communication to a user's device for at least transmitting data about the determined angle of rotation;
- and
- III. a wired connection interface for outputting data about the determined angle of rotation.
A system for determining a horizontal angle of rotation of a slit beam of a slit lamp, the system comprising:
- a slit lamp of the type having a slit light source producing the slit beam, the slit light source being mounted to be rotatable about a vertical axis, the slit lamp having a mirror to direct the slit beam horizontally with rotation of the slit beam being about a horizontal axis;
- an angle measuring device couplable to the slit lamp, the angle measuring device comprising:
- a housing comprising:
- sensors comprising a Micro-Electro-Mechanical Systems (MEMS) gyroscope paired with MEMS accelerometers for measuring data comprising information about angular velocity and acceleration of the angle measuring device;
- and
- a microcontroller connected the sensors for determining the angle of rotation of the angle measuring device based on the data measured by the sensors;
- a coupling member shaped to be coupled to a light source outer body of the slit light source of the slit lamp and for supporting the housing;
- and
- one of the group consisting of:
- I. a display for displaying the determined angle of rotation of the angle measuring device,
- II. a wireless data transceiver for providing communication to a user's device for at least transmitting the determined angle of rotation of the angle measuring device, and
- III. a wired connection interface for outputting the determined angle of rotation of the angle measuring device;
- and
- a user's device for receiving, from the angle measuring device, data about the angle of rotation determined by the microcontroller of the angle measuring device and comprising a processor and memory comprising executable program code that, when executed by the processor, causes the processor to provide a user interface displaying the angle of rotation determined by the microcontroller of the angle measuring device.
A method of determining an angle of rotation of a slit light source of a slit lamp indicative of a horizontal angle of rotation a slit beam of the slit lamp, the method comprising:
- providing the slit lamp, wherein the slit lamp is of the type having the slit light source producing the slit beam, the slit light source being mounted to be rotatable about a vertical axis, the slit lamp having a mirror to direct the slit beam horizontally with rotation of the slit beam being about a horizontal axis;
- providing a Micro-Electro-Mechanical Systems (MEMS) gyroscope and MEMS accelerometers;
- coupling the MEMS gyroscope and MEMS accelerometers to the slit light source;
- determining an initial orientation of slit light source corresponding to a reference orientation of the slit lamp;
- rotating the slit light source around the vertical axis to change an orientation of the slit beam;
- using the coupled MEMS gyroscope and MEMS accelerometers to measure the angular velocity and acceleration during said rotating of the slit light source around the vertical axis;
- and
- using the measured angular velocity and the measured acceleration to determine the change of orientation of the slit light source of the slit lamp indicative of the horizontal angle of rotation the slit beam of the slit lamp.
Dependencies are inferred from the claim text.