A sensor device has a metal sensor housing with a housing base coupled to a frame base of a metal optical frame. A device mounting plate is orthogonal to the frame base. A securing device secures an optical communication device to the device mounting plate. A barrel mounting channel has first and second sidewalls, each extending obliquely to the frame base and defining a linear translation pathway along the frame base for a metal lens barrel. A fastener secures the metal lens barrel to the first and second sidewalls. A glass lens is in contact with three protrusions extending outward from an inner annular surface of the lens barrel. The optical communication device is configured to be in optical communication with the lens and is secured in a particular position in a translation plane mutually defined by the device mounting plate and the optical communication device.

An optical module for a machine for machining workpieces and/or for producing molded bodies by way of location-selective solidification of material powder into contiguous regions by a laser beam includes a housing for releasably fastening the optical module to the machine and a collimation optics changer releasably arranged in the housing, having at least two collimation optics which can be moved into a beam path of the laser beam for collimating the laser beam. The collimation optics changer has a mechanism for automatically changing the collimation optics.

Provided are a heating film that can be manufactured via a simple manufacturing process and that excels in environmental resistance, a lens comprising the heating film, and an in-vehicle camera comprising the lens. The manufacturing method for a heating film for heating a lens comprises a supplying step for supplying a film raw material containing a carbon filler, a binder resin, and a solvent, in a heated state or a room temperature state according to a supply thickness of the film raw material.

A liquid lens of the present invention includes a first plate including a cavity in which a conductive liquid and a nonconductive liquid are disposed; a first electrode disposed on the first plate; a second electrode disposed under the first plate; a second plate disposed on the first electrode; and a third plate disposed under the second electrode, wherein the second plate includes a first region having a first thickness, the first region encompassing an optical axis, and a second region extended from the first region and having a second thickness greater than the first thickness, and the location of the upper surface of the first region is lower than the location of the upper surface of the second region.

A relay optical system 20 for a rigid endoscope includes a lens fixing frame 21 and a plurality of lenses 22. The lens fixing frame 21 has a plurality of tubular bodies 26. The plurality of tubular bodies 26 are joined coaxially to each other. The plurality of lenses 22 are located at positions other than a joint position jp of the tubular bodies 26 in an axis direction of the lens fixing frame 21. The plurality of lenses 22 are located in the lens fixing frame 21 so as to have a coincident optical axis. The plurality of lenses 22 do not include a cemented lens.

The techniques of this disclosure relate to a system for adjusting a focus of an image. A system includes a phased metalens configured to adjust a focus of an image detected by an imaging substrate of an image sensor to compensate for warpage of the imaging substrate. The phased metalens can achieve a near-diffraction-limited focusing over incoming light wavelengths using precisely defined nanoscale subwavelength resolution structures.

A variable focal length lens device includes: a lens system of a liquid resonant type whose refractive index is changed in response to a drive signal to be inputted; a temperature sensor configured to acquire temperature information of the lens system; and a drive controller configured to control the lens system. The drive controller includes: a resonant frequency estimation unit configured to calculate an estimated value of a resonant frequency of the lens system on a basis of the temperature information; and a starting frequency setting unit configured to set a starting frequency of the lens system on a basis of the estimated value of the resonant frequency.

The camera module includes a housing having an interior space with an inner surface, a lens assembly comprising a lens body within the interior space defining an optical axis, an electronics carrier, an image sensor on the electronics carrier in optical communication with the lens assembly, at least one positioning element projecting longitudinally along the optical axis towards the electronics carrier for attaching the lens assembly and the electronics carrier to each other with a constant predetermined gap there between with the image sensor optically aligned with the lens assembly, and at least one flange projecting radially perpendicular to the optical axis that can be attached to the inner surface of the housing.

An optical lens assembly is adapted for receiving a light beam that is emitted by an object, and includes a lens unit and a sleeve unit. The lens unit includes a casing that has a light-incident side adapted for receiving the light beam. The sleeve unit surrounds the light-incident side of the casing, and defines a light-receiving space that is adapted for the light beam to pass through so that propagation of the light beam is unaffected by disturbance caused by movement of air. An optical measurement method includes steps of: a) providing a lens unit, a sleeve unit, and an object that is for emitting a light beam; and b) operating the lens unit so that the light beam is received by the lens unit.

A thermally stabilized fastener system and method is disclosed. The disclosed system/method integrates a fastener (FAS) incorporating a faster retention head (FRH), fastener retention body (FRB), and fastener retention tip (FRT) to couple a mechanical member stack (MMS) in a thermally stabilized fashion using a fastener retention receiver (FRR). The MMS includes a temperature compensating member (TCM), a first retention member (FRM), and an optional second retention member (SRM). The TCM is constructed using a tailored thermal expansion coefficient (TTC) that permits the TCM to compensate for the thermal expansion characteristics of the FAS, FRM, and SRM such that the force applied by the FRH and FRR portions of the FAS to the MMS is tailored to a specific temperature force profile (TFP) over changes in MMS/FAS temperature. The TCM may be selected with a TTC to achieve a uniform TFP over changes in MMS/FAS temperature.