A device and method are described having/using at least a first radiation source and a second source of radiation, at least one measurement or detection device as well as at least one evaluation system with the first radiation source and second radiation source either oriented towards a top or bottom side of the optically effective object, or together oriented towards the top or bottom of the optically effective object, whereby at least the first radiation source emits reflective radiation towards the optically effective object and/or excitation radiation emitted for the stimulation of luminescence radiation in the material of the optically effective object and/or in the coating material of the optically effective object, and whereby the second radiation source at least emits radiation that penetrates through the optically effective object.

An electric-zooming laser module includes a laser unit, a focusing lens, and an electric device. The laser unit is configured to emit laser light. The focusing lens corresponds in position to the laser unit, and the focusing lens is configured to converge the laser light emitted from the laser unit to outwardly output the laser light. The electric device is connected to the focusing lens, and the electric device is configured to be actuated by changing a current, a voltage, or a polarity of the electric device. The electric device is configured to drive and move the focusing lens in a straight line toward or away from the laser unit to adjust a focal length of the focusing lens. Accordingly, the focusing lens is arranged on a pre-determined location and completes focusing a focal point of the focusing lens.

A test fixture includes a base and an adjustable structure. The adjustable structure includes a limiting block, a locking block, and a fixing member. The limiting block is disposed on the base. The locking block is disposed on the base and abuts an edge of the limiting block to lock the limiting block in position. The fixing member is disposed on the limiting block to fix the limiting block on the base. When the locking block is moved from a first position to a second position, the locking block unlocks the limiting block, the fixing member is loosened, and the limiting block can rotate on the base. After the limiting block is rotated, the locking block is moved from the second position to the first position to lock the limiting block, and the fixing member is tightened to fix the limiting block on the base.

Some demonstrative embodiments include apparatuses, systems and/or methods of determining one or more optical parameters of a lens of eyeglasses. For example, a product may include one or more tangible computer-readable non-transitory storage media including computer-executable instructions operable to, when executed by at least one computer processor, enable the at least one computer processor to implement operations of determining one or more optical parameters of a lens of eyeglasses. The operations may include processing at least one image of an object captured via the lens; and determining the one or more optical parameters of the lens based on the at least one image.

A device for measuring the optical power of an optical test system includes an optical-object-generating assembly, a support for the optical test system, a digital image detector, and a deflector assembly. The deflector assembly is intended to generate a lateral movement in respect of the initial optical image, thereby producing a shifted optical image and a reference optical image. The digital image detector captures the shifted optical image and the reference optical image in at least one digital image containing data relating to the lateral movement. The device also includes a processing component to calculate the optical power of the optical test system from the data relating to the lateral movement.

An optical detection device and method for detecting temperature changes and/or wavelength changes of an optical probe signal includes transmitting an optical probe signal having a predetermined wavelength to an optical input port of an optical waveguide; detecting first and second optical detection signal at first and second optical output ports via first and second opto-electrical converters which create corresponding first and second electrical signals; measuring values of the first and second electrical signal and determining an absolute temperature or a temperature change of the optical waveguide and/or an absolute wavelength value or a wavelength change of the optical probe signal via values measured of the first and second electrical signals and first and second previously determined wavelengths and temperature dependencies of both first and second power transfer functions.

A system and method for measuring refractive index inhomogeneity between plates of a Lightguide Optical Element (LOE) uses an innovative measuring technique based on a shearing interferometric technique conventionally used to observe interference and test the collimation of light beams. Another feature of the current implementation is an innovative method for analyzing the characteristics of the generated interferogram to characterize discrepancies between adjacent plates in an LOE.

A system for producing a high contrast image of an ophthalmic lens under inspection, comprising: top camera to view ophthalmic lens through lens module; motorized mechanism for positioning top camera at two pre-programmed positions; three illumination modules; said illumination modules focusing light through ophthalmic lens under inspection, thereby producing a high contrast image of features of ophthalmic lens; wherein ophthalmic lens is contained within cuvette with optical power of positive of ten; said cuvette mounted with two optical windows, one of them being vertical and other at an angle; said cuvette having transparent bottom glass suitably designed to position ophthalmic lens under inspection; said cuvette designed to be filled with saline solution; accurately calibrated test object positioned to achieve image of ophthalmic lens overlaid with image of pattern present on test object; additional illumination source comprising laser diode; and second camera to view ophthalmic lens through slanted optical lens module.

A lens refractive index detection device is disclosed which has a light source module, a lens center physical thickness detection module and a lens center optical thickness detection module. The light source module includes a first light source component and a second light source component for outputting a collimated light beam, a first light combining component, and a focusing component. The lens center physical thickness detection module includes a first imaging component and a second imaging component. The lens center optical thickness detection module includes a first photodetection component and a second photodetection component, a beam splitting component, a partial reflection mirror, and a movable reflection mirror. The lens refractive index detection device enables simple operation, fast and non-destructive on-line detection, and is also applicable to lenses with irregular surfaces, such as aspherical lenses, cylindrical lenses, and finished lenses. A lens refractive index detection method is also provided.

An ophthalmic measurement and laser surgery system includes: a laser source; a corneal topography subsystem; an axis determining subsystem; a ranging subsystem comprising an Optical Coherence Tomographer (OCT); and a refractive index determining subsystem. All of the subsystems are under the operative control of a controller. The controller is configure to: operate the corneal topography subsystem to obtain corneal surface information; operate the axis determining subsystem to identify one or more ophthalmic axes of the eye; operate the OCT to sequentially scan the eye in a plurality of OCT scan patterns, the plurality of scan patterns configured to determine an axial length of the eye; operate the refractive index determining subsystem so to determine an index of refraction of one or more ophthalmic tissues, wherein at least one of the corneal surface information, ophthalmic axis information, and axial length is modified based on the determined index of refraction.