A demonstration unit for demonstrating at least one photochromic characteristic of an optical article having at least one photochromic material includes a housing defining an interior, at least two activating light sources configured to radiate ultraviolet light into the interior, at least one visible light source configured to illuminate at least a portion of the interior of the housing. and a control device operatively connected to the at least two activating light sources and the at least one visible light source. The control device is configured to control operation of the activating light sources and the visible light source to activate at least one photochromic compound of the photochromic material based on at least one predetermined spectral profile corresponding to a simulated outdoor lighting condition. A method of demonstrating at least one photochromic characteristic of an optical article having a photochromic material using the demonstration unit is also disclosed.

A demonstration unit for demonstrating at least one photochromic characteristic of an optical article having at least one photochromic material includes a housing defining an interior, at least two activating light sources configured to radiate ultraviolet light into the interior, at least one visible light source configured to illuminate at least a portion of the interior of the housing. and a control device operatively connected to the at least two activating light sources and the at least one visible light source. The control device is configured to control operation of the activating light sources and the visible light source to activate at least one photochromic compound of the photochromic material based on at least one predetermined spectral profile corresponding to a simulated outdoor lighting condition. A method of demonstrating at least one photochromic characteristic of an optical article having a photochromic material using the demonstration unit is also disclosed.

A reusable surgical model of the eye has mating anterior and posterior segments. The posterior segment has structures corresponding to those of the eye, including a hollow globe and an image of the fundus positioned upon an interior, posterior portion of the globe. A mating connector is peripherally formed about an open end of the globe. The anterior segment includes structures corresponding to those of the eye, including a pars plana, an opening in a region corresponding to an iris, and a lens positionable within the opening. The anterior segment has a peripheral connector which mates with that of the posterior segment. The lens is removably connected to the anterior segment, and has a focal length corresponding to a natural eye. A coating is applied to the fundus to enable simulation of a membrane peeling procedure, and the globe is Tillable with a vitreous substitute.

Modular solar devices and kits of various components for assembling such devices are described. The kit may include a lighting component, one or more lights, a power storage component, and/or a solar component. The lighting component may include a control circuit and at least one light connector operably coupled to the first control circuit, wherein the light(s) may be configured to electrically connect to the light connector(s). The power storage component may include a control circuit and at least one rechargeable battery operably coupled to the control circuit. The solar component may include a solar panel, e.g., the solar component being configured to supply electricity generated by the solar panel to the power storage component and/or the lighting component to illuminate the light(s).

The method and system utilized the measurement of the absolute velocities or equivalent parameters of the electromagnetic devices and objects, which are defined as the velocities relative to the real origin of the electromagnetic wave, to accurately picture their impacts on the propagation and measurement of the electromagnetic wave and compensate for these impacts correspondingly. The comprehensive information of the absolute velocities, including both the measured values and the calculated right timings, is utilized to calibrate and control the electromagnetic device and calculate the results to improve performance and accuracy. The method and system include the absolute velocity measurement, the calibration and control of the device, and the computation of the right timings and results.

The method and system utilized the measurement of the absolute velocities or equivalent parameters of the electromagnetic devices and objects, which are defined as the velocities relative to the real origin of the electromagnetic wave, to accurately picture their impacts on the propagation and measurement of the electromagnetic wave and compensate for these impacts correspondingly. The comprehensive information of the absolute velocities, including both the measured values and the calculated right timings, is utilized to calibrate and control the electromagnetic device and calculate the results to improve performance and accuracy. The method and system include the absolute velocity measurement, the calibration and control of the device, and the computation of the right timings and results.

Disclosed is a hybrid simulator for teaching optics or for training adjustment of an optical device. The hybrid simulator includes at least one dummy optical component physically simulating an optical device, at least one actuator device for generating or simulating an adjustment of the dummy optical component, a sensor configured for detecting an adjustment signal representative of operating the actuator device, a digital processing system including a numerical model for simulating an output numerical optical beam resulting from interaction between an input numerical optical beam and a numerical optical component representing the optical device as a function of the adjustment signal and a display system for displaying a visual signal representative of the output optical beam and/or augmented reality signals.

Disclosed is a hybrid simulator for teaching optics or for training adjustment of an optical device. The hybrid simulator includes at least one dummy optical component physically simulating an optical device, at least one actuator device for generating or simulating an adjustment of the dummy optical component, a sensor configured for detecting an adjustment signal representative of operating the actuator device, a digital processing system including a numerical model for simulating an output numerical optical beam resulting from interaction between an input numerical optical beam and a numerical optical component representing the optical device as a function of the adjustment signal and a display system for displaying a visual signal representative of the output optical beam and/or augmented reality signals.

The present invention relates to an exchangeable optical principles demonstrating kit. The kit includes a retractable sleeve structure having a first end and a second end; a grating plate including a grating film; and a pinhole plate including a pinhole opening, wherein the grating plate is selectively attached to the retractable sleeve structure by a magnetic connection, to render the exchangeable optical principles demonstrating kit to form an optical interference principle demonstrating device, and the pinhole plate is selectively attached to the retractable sleeve structure by a magnetic connection, to render the exchangeable optical principles demonstrating kit to form an optical pinhole principle demonstrating device.

The present invention relates to an exchangeable optical principles demonstrating kit. The kit includes a retractable sleeve structure having a first end and a second end; a grating plate including a grating film; and a pinhole plate including a pinhole opening, wherein the grating plate is selectively attached to the retractable sleeve structure by a magnetic connection, to render the exchangeable optical principles demonstrating kit to form an optical interference principle demonstrating device, and the pinhole plate is selectively attached to the retractable sleeve structure by a magnetic connection, to render the exchangeable optical principles demonstrating kit to form an optical pinhole principle demonstrating device.