A positional adjustment mechanism comprises a movable plate having first and second positioning actuators and a biasing member to bias the plate against the actuators. The movable plate has three flat surfaces facing the actuators and biasing member one of which is not substantially perpendicular to either of the other two. The biasing member ensures that the plate is held in contact with the actuators during adjustment. Also, an adjustable mount comprises a support and a fixed bar extending therefrom, an axially movable bar extending from the support and being axially movable relative thereto, and an element movably mounted to the fixed bar and movably mounted to the movable bar, the first element being selectively fixable relative to the fixed bar and selectively fixable relative to the movable bar. This arrangement allows a great degree of freedom in adjusting the position of the element as it can be selectively fixed to either or both of the fixed bar and movable bar.

This disclosure describes an afocal attachment that allows for alteration of received electromagnetic radiation (or “light”) prior to entry into the telescope. For example, a rifle scope may have a base magnification of 2×, and the afocal attachment may allow magnification of a received image at levels ranging from 2× to 4×. In this example, the entire telescope system with the afocal attachment installed will have an overall magnification of 4× to 8×. In another example, the magnification of the telescope can be increased, transforming a telescope with a 4× magnification into a telescope with a higher effective magnification. In some instances the afocal attachment's optical axis can be configured to permit independent adjustment, allowing for easy removal and reinstallation of the afocal attachment without a need to re-adjust the telescope itself.

A test fixture for holding and testing portions of an optical device, such as a plurality of cameras of an eyewear device. The test fixture includes a relay lens such that the fixture can be positioned close to a test screen displaying a patterned test image and reducing the size and cost of parts. The test fixture includes one or more lasers configured to easily and quickly align the test fixture. The test fixture includes an actuator for selectively positioning the cameras behind the relay lens to check for image quality.

An adjusting module and a projector are provided. The adjusting module includes a frame, an optical assembly, an elastic assembly and an adjusting member. The optical assembly is fixed to the elastic assembly. The elastic assembly is detachably assembled on the frame, and includes a fixing portion, a first elastic portion and a second elastic portion. The fixing portion is fixed to the optical assembly. The first and second elastic portions respectively include first and second hooks and first and second elastic arms. The first and second elastic arms are respectively connected to the fixing portion, and the first and second hooks are respectively assembled to the frame. The adjusting member penetrates through the through hole and leans against the optical assembly. When the adjusting member is adjusted, the optical assembly is displaced relative to the frame in a plane perpendicular to an incident optical axis.

A compensator for manipulating a radiation beam traveling along an optical path. The compensator includes a fixed support holding a first optical wedge and an adjustable support holding a second optical wedge. The adjustable support includes a base, a stage holding the second optical wedge, first and second flexures, and a drive block. The stage defines a cavity and is movable relative to the base and the fixed support. The first and second flexures couple the stage to the base such that the stage translates along a stage path. The drive block is disposed in the cavity of the stage and is configured to translate along a drive block path perpendicular to the optical path and perpendicular to the stage path. The drive block includes first and second drive bearing surfaces configured to translate the stage in first and second stage directions, respectively, along the stage path.

An optic device turret for adjusting the optical element of the optic device. A spiral cam mechanism is engaged with the turret to define a maximum and minimum adjustment of the optical element. A rotation indicator displays the amount a knob has been rotated.

An optical element retainer includes a ring body defined about a central axis. The ring body includes an inner diametric surface, an outer diametric surface opposed to the inner diametric surface, a first annular axial surface, and a plurality of flexures extending from a second annular axial surface opposite the first annular axial surface.

An alignment device having two angular degrees of freedom is provided. The alignment device is adjustable such that it is suitable for aligning a first apparatus with respect to a second apparatus. The first apparatus may emit one or more of electromagnetic waves, acoustic waves and matter towards the second apparatus and for detection by the second apparatus. The first and second apparatuses may be disposed in a harsh environment such as is found in the vicinity of an industrial process stack. In some embodiments the first apparatus is a laser, preferably a tunable diode laser, and the second apparatus is a receiver incorporating a detector. In these embodiments the apparatuses may be used to perform laser absorption spectroscopy on a process gas flowing through an industrial process stack.

An imaging module includes: a substrate on which an imaging element is mounted and in which a through-hole is formed; a holding section that has a support pin inserted into the through-hole in such a manner that the support pin penetrates the through-hole and that holds an optical system forming a subject image on the imaging element; and an adhesive that is provided in the through-hole and that fixes the substrate to the support pin, and at least a tip end portion of the support pin has a tapered shape from a root side of the support pin toward a tip end of the support pin.

The present disclosure provides a method and system including a non-confocal microscope with an attached imaging fiber optic for direct and real time in-situ visualization of mammalian microscopic structures for diagnostic and therapeutic uses.