A medical apparatus is described for providing visualization of a surgical site. The medical apparatus includes an electronic display disposed within a display housing, the electronic display configured to produce a two-dimensional image. The medical apparatus includes a display optical system disposed within the display housing, the display optical system comprising a plurality of lens elements disposed along an optical path. The display optical system is configured to receive the two-dimensional image from the electronic display, produce a beam with a cross-section that remains substantially constant along the optical path, and produce a collimated beam exiting the opening in the display housing. The medical apparatus can also include an auxiliary video camera configured to provide an oblique view of a patient on the electronic display without requiring a surgeon to adjust their viewing angle through oculars viewing the electronic display.

A medical apparatus is described for providing visualization of a surgical site. The medical apparatus includes an electronic display disposed within a display housing, the electronic display configured to produce a two-dimensional image. The medical apparatus includes a display optical system disposed within the display housing, the display optical system comprising a plurality of lens elements disposed along an optical path. The display optical system is configured to receive the two-dimensional image from the electronic display, produce a beam with a cross-section that remains substantially constant along the optical path, and produce a collimated beam exiting the opening in the display housing. The medical apparatus can also include an auxiliary video camera configured to provide an oblique view of a patient on the electronic display without requiring a surgeon to adjust their viewing angle through oculars viewing the electronic display.

An observation device includes: first objective lenses arranged in a row so as to be parallel to one another; second objective lenses arranged in a row so as to be parallel to one another; and image capturing elements for capturing first images formed by the first objective lenses and second images formed by the second objective lenses, respectively, wherein each of the objective lenses is a magnifying objective lens, a first axis of light incident on the first objective lenses and a second axis of light incident on the second objective lenses are parallel to one another, fields of view of the first objective lenses and fields of view of the second objective lenses are arranged alternately in a row on an observation line, and the first images and the second images are arranged in a row in image-forming regions that are disposed at positions different from each other.

An observation device includes: first objective lenses arranged in a row so as to be parallel to one another; second objective lenses arranged in a row so as to be parallel to one another; and image capturing elements for capturing first images formed by the first objective lenses and second images formed by the second objective lenses, respectively, wherein each of the objective lenses is a magnifying objective lens, a first axis of light incident on the first objective lenses and a second axis of light incident on the second objective lenses are parallel to one another, fields of view of the first objective lenses and fields of view of the second objective lenses are arranged alternately in a row on an observation line, and the first images and the second images are arranged in a row in image-forming regions that are disposed at positions different from each other.

Both visible and IR cameras are integrated without an increase in an optical stack height of a surgical microscope used for ophthalmic surgery. The IR camera may be used to directly and intraoperatively capture a scanning OCT measurement beam, which uses NIR light that is invisible to the human eye. An IR image from the IR camera taken from the same surgical field as displayed intraoperatively to a user of the surgical microscope may be displayed in an ocular to the user, enabling visualization of a location of an OCT scan along with actual visible images of the surgical field.

Both visible and IR cameras are integrated without an increase in an optical stack height of a surgical microscope used for ophthalmic surgery. The IR camera may be used to directly and intraoperatively capture a scanning OCT measurement beam, which uses NIR light that is invisible to the human eye. An IR image from the IR camera taken from the same surgical field as displayed intraoperatively to a user of the surgical microscope may be displayed in an ocular to the user, enabling visualization of a location of an OCT scan along with actual visible images of the surgical field.

A laser projection module, a depth camera and an electronic device are provided. The laser projection module includes a laser emitter, a collimation element, a diffraction element and a detection component. The laser emitter is configured to emit laser. The collimation element is configured to collimate the laser. The diffraction element is configured to diffract the laser collimated by the collimation element to define a laser pattern. The detection component is disposed to at least one of the collimation element and the diffraction element, and configured to output an electrical signal. The processor is coupled to the detection component, and configured to receive the electrical signal and detect whether the at least one of the collimation element and the diffraction element are abnormal according to the electrical signal.

A surgical retractor includes a plurality of cameras integrated therein. One such retractor includes a tubular retractor and an insert supporting said plurality of cameras can be disposed within a tubular retractor.

A surgical retractor includes a plurality of cameras integrated therein. One such retractor includes a tubular retractor and an insert supporting said plurality of cameras can be disposed within a tubular retractor.

A light-sheet fluorescence microscope has a laser producing a light beam, two objective lenses arranged with their optical axes in different directions to provide different views, a scanning mirror configured to direct the light beam into distinct portions of an optical path, a beam combining/separating component configured to direct the light beam in the distinct portions of the optical path alternately into each of the two objective lenses and to combine detection light from the two objective lenses into the distinct portions of the optical path, a dichroic mirror that separates the light beam from detection light, and a camera sensor focused simultaneously on the focal planes of said two objective lenses. Embodiments may also include an adaptive optics or fixed corrective element.