Augmented reality applications require precise camera calibration to reduce the overall target registration errors. The camera calibration determines the mathematical model of the camera in order to determine how the physical world space is mapped to the camera image space and thus is highly dependent on the optics of the camera. The camera calibration algorithm normally assumes that the optics of the camera is rigidly fixed, which in fact is not at least for tilted laparoscopic cameras as illustrated in FIGS. 6 to 8. Furthermore, any mechanical play between elements of the objective and the image converter will render the optics variable. According to the invention markers to will be placed within the field of view of the laparoscopic camera, which allows for determination of rotation of the optical part and mechanical misalignment without the necessity or providing any additional sensor.

An intra-oral optical scanning method for intra-oral optical scanning including projecting a pattern, the pattern including at least a first area illuminated by a first color of light and a second area illuminated by a second color of light and at least one non-illuminated area onto an intra-oral feature, making a first image of the first area, the second area and the non-illuminated area differentiating between the first color of light and the second color of light in the first image of the projected pattern, and determining from the image of the non-illuminated area at least one of an ambient light level, a level of scattered light, a level of light absorption and a level of light reflected from at least one of the first area and the second area. Related apparatus and methods are also described.

An endoscopic treatment tool, includes an elongated member having a distal end and a proximal end; a braid disposed between the distal end and the proximal end of the elongated member; a distal indicator disposed on the elongated member between a distal end and a proximal end of the braid, the distal indicator extending along a longitudinal axis of the elongated member; a proximal indicator disposed between the distal end and the proximal end of the braid on the elongated member at a more proximal side of the elongated member than the distal indicator, the proximal indicator extending along the longitudinal axis; and a pre-curved shape portion formed in a curved shape, wherein each of the distal indicator and the proximal indicator has a width less than half of an outer circumferential surface of the elongated member in a circumferential direction of the elongated member, respectively.

The present invention relates to a fully integrated sterilizable one time use disposable tissue visualization device and methods for using such devices. Preferred embodiments of the invention facilitate the visualization of an internal tissue site while ausing a minimum of damage to the surrounding tissue. Further preferred embodiments may allow for the delivery of fluids and other treatment to an internal tissue site.

An imaging device (010, 10, 110) comprises a first optical system (020, 20, 120) at a distal end of the imaging device, a second optical system (080, 80, 180) towards the proximal end of the imaging device, and a sensor (074, 74, 174) at the proximal end of the imaging device. The first and second optical systems and the sensor are aligned along a common longitudinal axis. The first optical system is or comprises one or more reflective and/or refractive optical components (24, 124; 22, 122) symmetrically and/or coaxially arranged with respect to the longitudinal axis, and the second optical system comprises one or more reflective and/or refractive optical components (24, 124; 22, 122) for focussing incident light towards the sensor. A calibration system (200) and method for calibrating such an imaging device, and a method of processing image data obtained from such an imaging device are also provided.

An image generation apparatus includes an objective optical system, an optical-path splitter, an image sensor, and an image processor. Both a first imaging area and a second imaging area are images of a field of view of the objective optical system. An outer edge of the first imaging area and an outer edge of the second imaging area are located at an inner side of a predetermined image pickup area, and an image of the outer edge located in the predetermined image pickup area is captured by the image sensor. The image processor has reference data, and in the image processor, a feature point is extracted on the basis of the imaging area. An amount of shift between the predetermined imaging area and the image sensor is calculated from the feature point and the reference data.

An endoscope comprising a camera handle used to fix the camera lens and a wired connector; the camera handle comprises of an outer shell, an end cap and an inner shell; an sensing element is provided inside the inner shell; a lens group is provided between the sensing element and the end cap; the inner shell is fixedly connected with the outer shell through assembling components; the outer shell is fixedly connected with the inner shell through fixing components; a light hole corresponding to the position of the sensing element is cut in the middle of the end cap. The present invention has following advantages: The inner shell is inside the outer shell; both the inner shell and the outer shell are fixedly connected with the end cap; overall sealing, waterproof and dustproof performances of the camera handle are excellent; the removable waterproof cover is provided at the end of the sleeve; the elastic sealing ring is provided between the waterproof cover and the assembling tube; the connector is in a sealed space and protected from being damaged by penetrated disinfectant; with excellent waterproof performance and safe use, the wired connector is suitable for medical equipment.

An imaging probe comprises a camera or endoscope with an external detector array, in which the probe is sized and shaped for surgical placement in an eye to image the eye from an interior of the eye during treatment. The imaging probe and a treatment probe can be coupled together with a fastener or contained within a housing. The imaging probe and the treatment probe can be sized and shaped to enter the eye through an incision in the cornea and image one or more of the ciliary body band or the scleral spur. The treatment probe may comprise a treatment optical fiber or a surgical placement device to deliver an implant. A processor coupled to the detector can be configured with instructions to identify a location of one or more of the ciliary body band, the scleral spur, Schwalbe's line, or Schlemm's canal from the image.

Provided are a handle for an endoscope comprising an endoscope housing and a lens tube and wherein on the endoscope housing at least one operating element for changing a setting of the endoscope is provided, wherein the handle comprises a receiving section for receiving and retaining the endoscope and a grip section connected with the receiving section for retaining the endoscope, in which the handle further comprises at least one manipulator for operating the operating element when the handle is disposed on the endoscope, wherein the manipulator is movable relative to the receiving section and relative to the grip section, an endoscope with such a handle and a method for disposing such a handle on an endoscope.

Dental periscopes having mounting clips configured to couple to mobile devices are disclosed. A patient can mount the dental periscope to a mobile device by coupling the mounting clip of the periscope to the mobile device. The patient can then use the mobile device-mounted dental periscope to capture image and/or video data of one or more dental structures. The captured image/video data can be sent to a remote system to obtain a remote dental diagnosis based on the captured data. The remote diagnosis may be an automated diagnosis generated by a trained machine learning classifier.