A laser collimation- measuring system, including: a first laser source; a second laser source; a light combining device; a collimator; and a light divergence device. The first laser source and the second laser source emit a first laser and a second laser, respectively, to the light combining device. The first laser and the second laser are transmitted through the light combining device as a third laser and a fourth laser, respectively, and the third laser partially overlaps the fourth laser. The collimator is disposed in a light path of the third and fourth lasers and positioned between the light combining device and the laser divergence device. The laser collimation-measuring system enhances intensity of the laser collimation-measuring system.

Consumer products such as refraction measurement devices may be used for obtaining refraction measurements allow consumers to track their vision without visiting an optometrist or ophthalmologist. Such consumer products may work in concert with smart phones or other products having a touch screen that present images to refraction measurement devices. Smart phones may have resolution rates, sometimes measured as PPI or pixels per inch that are unknown to the user and/or refraction measurement device. One aspect of the invention is to provide an optical interface for the user to manually match the view port boundary of the smartphone to comport with the view port boundary of the refraction measurement device. Another aspect of the invention is the use of pre-distortion in images presented to the user. By noting the corrective movements exerted by the user upon the refractive measurement device, the user's own refractive error can be derived.

A detection device and a detection method are provided. The detection device includes a plurality of detection portions, a signal generator, and an optical component. The detection portions include a first detection electrode and a second detection electrode disposed at a same side. Different electrical signals provided by the signal generator are provided to a first electrode and a second detection electrode of a corresponding micro light-emitting device by the first detection electrode and the second detection electrode, respectively, to make a plurality of micro light-emitting devices emit light, and corresponding optical parameters are obtained by the optical component according to light-emitting conditions.

An optical apparatus includes a first light source, a second light source, a chart, an optical system, and a light receiving system. The chart is configured to guide light emitted from the first light source to a target optical system. The optical system is configured to form a point image by using light emitted from the second light source. The light receiving system is configured to receive first light emitted from the chart via the target optical system and second light emitted from the point image via the target optical system. The first light and the second light enter different positions of the target optical system.

A comprehensive test platform for fluorescence microscope objective lenses, comprising a bottom plate (1), wherein a horizontal adjustment device and a vertical fixing mechanism are provided on the bottom plate (1); the horizontal adjustment device comprises a two-dimensional translation stage (2) and a two-dimensional tilting stage (3) stacked in sequence; a reticle (4) is provided on the two-dimensional tilting stage (3); the vertical fixing mechanism comprises a back plate (6), and the back plate (6) is fixedly connected onto the bottom plate (1); an optical detection device and a guide sliding device (7) in the vertical direction are separately fixedly provided on the back plate (6); and a sliding support (8) that can slide along the guide sliding device is provided on the guide sliding device (7), and a measuring objective lens (5) is fixed on the sliding support (8).

A device that pulls out an optical fiber includes: a bobbin support that supports a bobbin rotatably about a rotation axis; a first pulling out unit that holds a first end of the optical fiber, pulls out a first portion of the optical fiber wound around the bobbin from a side of the first end in a state where the bobbin rotates in a predetermined direction, and returns a part of the first portion to the bobbin in a state where the bobbin rotates in a direction opposite to the predetermined direction; and a second pulling out unit that holds a second end of the optical fiber after the first pulling out unit pulls out the first portion from the side of the first end, and pulls out a second portion of the optical fiber wound around the bobbin from a side of the second end.

This method for retrieving at least one optical parameter of an ophthalmic lens comprises: obtaining an image of a first and second patterns by using an image capture device located at a first position; from that image, obtaining a first set of data from at least a part of the first pattern that is seen through the lens by the image capture device and obtaining a second set of data from at least a part of the second pattern that is seen directly i.e. outside the lens by the image capture device; retrieving the at least one optical parameter by using the first and second sets of data and taking account of relative positions of the image capture device, the lens and the first and second patterns.

Evaluating the performance of an X-ray tube by: recording arcing events that occurred during the use of the X-ray tube; classifying the arcing events by severity; generating, on the basis of the classified arcing events, a first growth pattern for occurrences of arcing events; and determining a level of bubbles in the X-ray tube by finding, on the basis of the first growth pattern, a matching second growth pattern associated with a known level of bubbles in the X-ray tube. An X-ray tube may be checked and replaced in a timely manner, without the need for an on-site inspection, by remotely predicting trends or patterns for growth of levels of bubbles in the X-ray tube.

A restraint system (10) for helping to protect an occupant (60) of a vehicle (20) having a seat (50) for the occupant (60) includes a primary airbag (70) having a stored condition within the roof (32) and being inflatable to a deployed condition extending into the cabin (40) on a first side of the seat (50). A support airbag (76) has a stored condition within the roof (32) and is inflatable to a deployed condition on a second side of the seat (50) opposite the first side. Tethers (120) connect the primary airbag (70) and the support airbag (76) such that occupant (60) penetration into the primary airbag (70) pulls the support airbag (76) into engagement with the seat (50).

A combination detector for detecting a visually identifiable property and an optical property of an optical system. A phase visualization element converts an incoming light bundle to one or more output light bundles in which the spatial phase distribution of the incoming light bundle is visually apparent. The phase visualization element is arranged relative to a detection surface of an image sensor such that the output light bundle or the output light bundles is/are incident only on a first partial region of the detection surface, while a second partial region of the detection surface is exposed in the direction of incidence in order to detect the incoming light bundle which is uninfluenced by the phase visualization element. An apparatus for testing the optical system includes a light source for generating a measuring light bundle and a combination detector as described.