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 system to inspect Dry Cosmetic contact lenses for defects such as imperfect structures, improper pattern prints, print smears, wrong colour, embedded foreign material or contaminants, wherein the said lens is printed with multilayers of ink on the anterior surface using at least one colourant and a binding polymer comprising: a) a Top camera to capture an image of the cosmetic lens; b) a Top illumination designed using IR wavelength LEDs positioned at an acute angle to the vertical axis and integrated with a lens system to produce a parallel and collimated illumination field; c) a bottom illumination designed using IR wavelength LEDs to illuminate the lens posterior; d) an optically transparent glass plate to accurately locate the lens at a predetermined position and also to diffuse the illumination; e) a contact lens under inspection placed on the transparent glass plate with its anterior surface facing the Camera and Top illumination; f) the Top and Bottom illumination designed using segmented LEDs arrangement, to provide programmable triggering of LED segments for intensity and trigger duration, dynamically.

The invention provides a device and method for calibrating a lens distortion center. The device includes a rotating frame, a first driving mechanism and a second driving mechanism. The first driving mechanism is connected with the rotating frame for driving the rotating frame to rotate. A calibration plate is arranged in the rotating frame and connected with the rotating frame through a rotating shaft. The second driving mechanism is connected with the calibration plate for driving the calibration plate to rotate relative to the rotating frame, and a lens placement platform is provided at a front end of the calibration plate. The device of the invention can adjust the relative position between the calibration plate and the lens through the cooperation of the first driving mechanism with the second driving mechanism, so that a lens can acquire different images to achieve calibration of lens distortion.

An environmental testing laboratory includes a supply port allowing air-conditioned air at a predetermined temperature supplied through the supply port at a predetermined speed, a discharge port facing the supply port and allowing the air be discharged through the discharge port, a flow passage disposed between the supply port and the discharge port and allowing the air to pass through the flow passage part, an installation part disposed at a center of the flow passage and allowing a measurement target in the installation part, and a flow straightening member which is disposed between a sidewall surface of the flow passage part and the installation part and which is configured to straighten an airflow of the air-conditioned air. The sidewall surface of the flow passage part and the first flow straightening member are disposed in parallel with the airflow of the air-conditioned air from the supply port to the discharge port.

A contact lens retrieving method is applied to a contact lens, which is placed in a detection container containing a buffer solution and has been inspected in an optical detection. The method comprises steps: moving a vacuum sucker into the buffer solution at a first speed to make the contact lens depart from the lateral side of the detection container; moving the vacuum sucker away from a bottom of the detection container at a second speed with the vacuum sucker not leaving the buffer solution to make the contact lens flow toward a center of the detection container; moving the vacuum sucker to approach the contact lens at a third speed to make the vacuum sucker and the contact lens positioned to each other; and using the vacuum sucker to take up the contact lens and carry the contact lens out of the detection container.

Disclosed is a plane grating calibration system, comprising an optical subsystem, a frame , first vibration isolator, a vacuum chuck, a workpiece stage, second vibration isolator, a base platform and a controller; the optical subsystem is mounted on the frame, and the frame is isolated from vibration by the first vibration isolator; the vacuum chuck is rotatably mounted on the workpiece stage, the workpiece stage is positioned on the base platform, and the base platform is isolated from vibration by the second vibration isolator. A displacement interferometer is integrated into the optical subsystem, the entire optical subsystem adopts a method of sharing a light source, thereby avoiding the problems of low wavelength precision and poor coherence of separate light sources.

A workpiece holder, measuring device, and a method for executing a measurement by using the workpiece holder. The workpiece holder is configured to hold a workpiece with two opposite arranged workpiece surfaces to be measured in a way that both are accessible by a moveable probe unit and can thus be measured in one setting of the workpiece. For this the workpiece holder comprises a support and a holding body. The holding body has a holding end away from the support with at least one holding surface at which the workpiece is held. In the holding body a free space is formed that adjoins the workpiece surface facing the support when a workpiece is held and makes the workpiece surface accessible for measuring or probing. The accessibility for the probe unit is provided by a transverse channel extending obliquely or orthogonally to the longitudinal axis of the workpiece holder.

An optical inspection device includes: a wafer support unit configured to support a wafer in which a plurality of Fabry-Perot interference filter portions are formed, each of the plurality of filter portions in which a distance between the first mirror portion and the second mirror portion facing each other varies by an electrostatic force, the wafer support unit configured to support the wafer such that a direction in which the first mirror portion and the second mirror portion face each other follows along a reference line; a light emission unit configured to emit light to be incident on each of the plurality of filter portions along the reference line; and a light detection unit configured to detect light transmitted through each of the plurality of filter portions along the reference line. The wafer support unit has a light passage region that allows light to pass along the reference line.

A level correction system includes a first adjustment device, a chuck device provided on the first adjustment device, a first reflective device provided on the chuck device, a second adjustment device, a carrying table provided on the second adjustment device, a second reflective device provided on the carrying table, a laser emitter configured to emit incident laser light, a laser receiver, and a controller. The first reflective device and the second reflective device are used to reflect the incident laser light to form a reflected laser light. The laser receiver is used to receive the reflected laser light. The controller is used to determine a height of the chuck device or the carrying table and whether a center point of a reflected light spot formed by the reflected laser light is offset from a center point of an incident light spot formed by the incident laser light.

A module housing case is described. The modular housing case includes a fiber optic component housing defined as a cavity that is sized to receive a fiber optic connector. Within the cavity is a ferrule guide. The module housing case also has an internal cavity that is at least partially enclosed. Components to assist in magnification may be disposed at least partially within the internal cavity. Finally, the module housing case employs a camera lens alignment feature.