14 results about "Ocular imaging" patented technology

The present disclosure relates to methods and systems for quantifying the vascular pattern using ocular imaging that shows vessel profiles for the detection, prevention, and treatment of diabetic retinopathy and other related ocular vascular diseases.

The invention relates to the technical field of augmented reality display, in particular to a display system with eye movement camera shooting and near-to-eye display light path fusion design, which comprises a display optical assembly, an image source, an eye imaging assembly and an infrared lamp, the display optical assembly comprises at least one lens; each lens is attached to an optical film material to perform polarization modulation on a light beam in a light polarization state, so that a near-to-eye display light beam and an eye imaging light beam are independently transmitted in the display optical assembly in different polarization states; the image source is used for generating a near-to-eye display light beam with a circular polarization state; the eye imaging assembly comprises at least one eye camera used for imaging an eye area, and the eye camera is arranged between the display optical assembly and the image source and located outside the near-to-eye display light path; and the infrared lamp is arranged at the side end of the display optical assembly, is close to one side of human eyes, and is used for providing eye imaging light beams required by eye imaging. The system can ensure clear imaging of the eye area by the eye camera while a near-to-eye display light path is not influenced.

Various implementations disclosed herein capture sensor data regarding portions of an eye (e.g., the cornea, iris, or retina, etc.) with a near-eye device (e.g., an HMD) using an array of photodiodes embedded within the device's display. The device includes optics configured to focus light from the display on the retina. The device includes a light source configured to illuminate a portion of the eye to be imaged with light having a wavelength (e.g., IR light) that does not interfere with the visible light from the display (e.g., non-IR light). Some implementations, provide outer-eye (e.g., corneal) imaging by accounting for the device's optics having a retinal focus. This may involve, as examples, using wavelength-specific components (e.g., a wavelength specific aperture stop / pinhole, an array of aperture stops / pinholes; a second lens, a meta-surface (for back-and-forth reflections / refractions), or other features.

Disclosed here is a mount for a mobile eye imaging system, and the mobile eye imaging system itself. The mount includes a nose bridge portion and lateral members that inhibit rotation of the mobile eye imaging system relative to a subject's face, while the system is in use. The system comprises a visual guide for defining a viewing direction for image capture, the mount, and an alignment mechanism engaged with the mount and visual guide, for positioning the system on a mobile device such that the visual guide is aligned with an image capture device of the mobile device.

The present application relates to the technical field of image acquisition, in particular to a rigid endoscope image acquisition method and system based on eyepiece imaging, comprising: receiving a first light path image and a second light path image transmitted through an objective lens by an eyepiece assembly of a rigid endoscope, and performing photoelectric conversion on the first light path image and the second light path image to obtain corresponding first original electric signals and second original electric signals; inputting the first original electric signals and the second original electric signals into a pre-trained image denoising model for denoising processing to obtain a first denoised image and a second denoised image. The present application generates a real-time depth mapping graph by combining posture sensor data, so that the endoscope can accurately reflect the distance distribution between the front end and the photographed tissue when observing the tissue, which helps doctors obtain more accurate spatial information.

A handheld eye imaging system which may be useful for capturing magnified and in-focus images of target structures of the eye, whereby the eye imaging system includes a magnifying lens housed within a housing having a housing proximal end and an opposing housing distal end, a light source housed within the housing, and a subject interface coupled to the housing proximate the housing distal end. The housing can be configured to removably couple to a portable camera proximate the housing proximal end. The camera can include a camera lens with a camera lens optical axis, whereby upon coupling of the housing and the camera, the magnifying lens may dispose along the camera lens optical axis.

A light-transmitting substrate is deployed with a first of two major surfaces in facing relation to an eye of a viewer and guides light by internal reflection between the two major surfaces. An optical coupling-out configuration couples image light, that corresponds to a collimated image and that is guided by internal reflection between the two major surfaces, out of the light-transmitting substrate. A first optical coupling configuration collimates light from the eye to produce collimated light, and couples the collimated light into the light-transmitting substrate for guiding by internal reflection. A second optical coupling configuration couples the collimated light out of the light-transmitting substrate toward an optical sensor that senses the coupled-out light. A processing system derives current gaze direction of the eye by processing signals from the optical sensor.

An ocular alignment system for aligning a subject's eye with an optical axis of an ocular imaging device comprising one or more guide light and one or more baffle configured to mask the one or more guide light from view of the subject such that the one or more guide light is only visible to the subject when the eye of the subject is aligned with the optical axis of an ocular imaging system.

The invention provides a device (30) for imaging and / or measuring an eye (42) having a cornea (40), the device comprising a camera (32) which has a field of view and which is for obtaining a camera image of the eye viewed along a first direction, a mirror (44, 56) which is mounted in a predetermined position and orientation relative to the camera and in the camera's field of view to provide, in the camera image, a reflection showing the cornea viewed along a second direction which is not parallel to the first direction, and a processing device configured to determine, by analysis of the reflection, a distance from the camera to the cornea.

The present subject matter relates to a 3-dimensional (3D) imaging device (100) for imaging various structures of eye. The 3D imaging device (100) comprises a 3D viewing unit (102) detachably coupled to an eye imaging unit (104). An imaging module (103) may be placed in between the 3D viewing unit (102) and the eye imaging unit (104) for capturing images or videos of eye The eye imaging unit 104 comprises an imaging lens (106), an illumination module (108), a machine learning module (110), a control module (112), a processor (114), and a memory (116). The components of the eye imaging unit (104) are arranged in such a way that they are used for both slit lamp imaging and ophthalmic imaging of the eye.

This application discloses an eye-shooting device, belonging to the technical field of eye-shooting devices. The eye-shooting device includes a housing, a shooting component, and an eye mask. The eye mask is configured as a first part and a second part that are fastened together, with a hollow cavity distributed along the circumference of the eye mask between these two parts. Thus, when a user uses the eye-shooting device, the user's face contacts the eye mask, and the eye mask undergoes a certain and relatively slow elastic deformation, resulting in a softer touch on the user's face, thereby improving the user's wearing comfort. Furthermore, the hollow groove design of the eye mask reduces the overall weight of the eye mask, saves manufacturing costs, and facilitates the miniaturization of the eye-shooting device.