31 results about "Ophthalmic optics" patented technology

Anti-scratch coating composition containing anisotropic particles, a corresponding coated substrate and its application in ophthalmic optics.

A device is provided. The device includes a base ophthalmic optic, a changeable tint element disposed over the base ophthalmic element, and a transparent heating element adapted to heat the changeable tint element. The transparent heating element is preferably adapted to heat the entire area of the changeable tint element.

The present invention relates to a process for treating an ophthalmic lens comprising two main sides the first one of which comprises a thin external organic or inorganic layer, comprising:- at least one treatment step for the second lens side through energetic and / or reactive species capable to perform a surface physical attack and / or chemical modification,- in option, at least one or more stepsfor depositing inorganic or organic layers carried out simultaneously or subsequently to the treatment step through said energetic and / or reactive species,characterized in that before the treatment step through energetic and / or reactive species, a deposition of a temporary protective layer is performed onto the thin external organic or inorganic layer.Application to ophthalmic optics.

The invention discloses a flat-bed ophthalmic optical observation support, belonging to the technical field of ophthalmic medical equipment, comprising a fixed seat, a first rotating rod, a second rotating rod, a rotating joint, an optical support, an adjustment device, an optical observation device, and a rotating adjustment wheel to adjust The rotation of the adjustment wheel drives the rotation of the adjustment screw, the adjustment screw and the screw of the wheel drive, the wheel drives the second shaft to rotate, the rotation of the second shaft drives the second bevel gear, and the second bevel gear meshes with the first bevel gear to drive, thereby driving the cylindrical The sleeve is rotated to achieve the purpose of adjusting the optical observation angle and fixing the optical observation device. The device is fixed on the hospital bed and is detachable for easy transfer. It is mainly used in the observation device during ophthalmic surgery and when the patient cannot sit and stand. Ophthalmic observation stand, the device is easy to use and easy to operate.

A method of calculating clinical performance of an ophthalmic optical correction using simulation by imaging a series of objects of different sizes by each of a plurality of eye optical systems, each of the eye optical systems including the ophthalmic optical correction, the method comprising A.) at an object distance, calculating a set of indicia of image quality, each indicium of the set of indicia corresponding to an object in the series of objects when it is imaged by a given one of the plurality of eye optical systems, B.) at the object distance, comparing the set of indicia to a threshold to determine a just-discernable object size for the given one of the plurality of eye optical systems, and C.) repeating steps A and B for each eye optical system in the plurality of eye optical systems.

The present application relates to the field of ophthalmic imaging, in particular to an ophthalmic optical imaging diagnostic system, including a scanning imaging module, which includes an anterior segment scanning imaging mode and a fundus scanning imaging mode; The emission direction of the light beam in the optical path is provided with the first lens group, the second lens group and the third lens group in sequence; in the anterior segment scanning imaging mode, the first lens group and the third lens group are removed from the scanning imaging module at the same time. The present application can switch the lens group in one optical path to realize the switching between the anterior segment imaging mode and the fundus imaging mode, without affecting the normal function and use of other optical paths, making the operation simpler and more convenient.

The present invention relates to an article comprising a substrate having a main surface coated with a mesoporous antistatic coating, said coating having a refractive index lower than or equal to 1.5, and a silica based matrix functionalized by ammonium groups, said matrix having a hydrophobic character. Under certain conditions, the mesoporous antistatic coating is a single-layer anti-reflection coating or is part of a multi-layer anti-reflection coating. This invention further relates to a method for manufacturing said article, and to the use of a mesoporous coating having a silica based matrix functionalized by ammonium groups, as an antistatic coating.

The invention relates to the field of ophthalmic optics, in particular to a device (10) for measuring the optical effect of an optical lens (100), in particular a spectacle lens, arranged in a measurement volume (200), the device comprising a display system (20) , the display system is configured to display a test structure (21); an image capture device (30) configured to use an imaging optical path (32) through the lens (100) from a plurality of viewpoints ( 31, 31', 31") to acquire image data of the test structure; and a computer unit (40), wherein the computer unit is configured to: determine a three-dimensional shape of the lens (100) based on the image data; and based on the image data The three-dimensional shape of the lens (100) calculates the optical effect of the lens, wherein the lens (100) is a spectacle lens and the optical effect of the spectacle lens is calculated for a user's intended wearing position. The present invention further relates to a corresponding method and a computer program.

The invention discloses a method and device for obtaining the optic disk area through ophthalmic optics coherence tomography images. The precise optic disk area is fast to obtain through the simple method and used for clinical analysis. The method comprises the steps that S101, the optic disk initial boundary circle is fitted after conversion is carried out on optic disk reference points of the multiple OCT images of an optic disk part many times; S102, moved coordinates of the k optic disk reference point are obtained through calculation and recorded into a storage container; S103, according to the moved coordinates of the k optic disk reference point, a refitted optic disk boundary circle is obtained by fitting the optic disk boundary circle; the S102 and the S103 are repeated, and all the optic disk reference points are moved to the correct position; S104, the area of the refitted optic disk boundary circle is calculated. The operation of selecting the optic disk reference points needing to be corrected is simple and accurate, the optic disk reference points found through the algorithm can be corrected to the accurate positions fast and conveniently, and accurate parameters like the optic disk area can be obtained through fast calculation after correction is finished.