An optical assembly, a camera module having the optical assembly, and a smart device having the camera module. The optical assembly comprises: a lens module (10) having an outer frame (12), wherein the outer frame (12) comprises four side surfaces divided according to an angle range, the lens module (10) comprises a first support portion (13) and a second support portion (14) on each side surface of the outer frame (12), and both the first support portion (13) and the second support portion (14) on each side surface are located at a group of diagonal regions (12A) of the outer frame (12); and a fixing means (30) disposed at another group of diagonal regions (12B) of the outer frame (12) of the lens module (10), wherein the fixing means (30) has a first power supply fixing portion (311) and a first groundwire fixing portion (321) corresponding to the first support portion (13), and a second power supply fixing portion (331) and a second groundwire fixing portion (322) corresponding to the second support portion (14), on a respective fixing surface corresponding to each side surface of the outer frame (12).

An optical assembly (13) for a three-dimensional measurement device is equipped with: an optical lens (320) that forms a pair of conjugate planes having an optically conjugate relationship; an optical device (341) that is disposed on one of the pair of conjugate planes; a temperature sensor (354) for detecting the temperature of the optical lens (320); a heater (350) for heating the optical lens (320); and a control part that controls the operation of the heater (350) on the basis of the result of the detection made by the temperature sensor (354) such that the optical lens (320) reaches a constant temperature.

A head-mounted device can effectively manage heat while also managing noise output in a manner that reduces the user's perception thereof. For example, a support member extending across a flow channel can provide multiple sections with different profiles and/or cross-sectional dimensions within the flow channel. Each of the profiles and/or cross-sectional dimensions can generate tonal noises at different frequencies, so that the tonal noises generated are distributed across multiple frequencies to mask such tonal noises among broadband noises that are generated by the head-mounted device. Such a support member can be moveably positioned within the flow channel and rigidly coupled to other components of the head-mounted device. Such a support member can also be used to draw heat away from other components of the head-mounted device to be dissipated by the flow of air within the flow channel.

An image sensor includes an imaging device, an optical system including a liquid lens, a temperature sensor that detects a temperature of the liquid lens, a heater that heats the liquid lens, a temperature adjuster that controls the heater to adjust the temperature of the liquid lens to a predetermined temperature, a nonvolatile memory storing property information about the liquid lens, a refractive power controller that determines, based on a target refractive power and the property information stored in the nonvolatile memory, an application voltage applicable to the liquid lens adjusted to have the predetermined temperature and applies the application voltage to the liquid lens to control a refractive power of the liquid lens to match the target refractive power, and an image processor. The optical system, the nonvolatile memory, and the temperature sensor are disconnectable from a body module including the refractive power controller and the image processor.

A lens unit includes a plurality of lenses arranged in an optical axis direction, a lens barrel, and a retainer. The lens barrel has an opening larger than outer diameters of the plurality of lenses and contains the plurality of lenses. The retainer holds the plurality of lenses by contacting, from a side adjacent to the opening in the lens barrel, one of the plurality of lenses that is closest to the opening. Each of the plurality of lenses has an object-side surface and an image-side surface which each include a flat portion that extends radially inward from an outer edge of the lens and that is perpendicular to the optical axis direction of the lens. Each of the plurality of lenses is held in planar contact with a holder at the flat portion. The retainer holds the plurality of lenses by biasing the plurality of lenses in the optical axis direction.

An embodiment provides an optical device comprising: a lens assembly which includes a liquid lens comprising a first liquid and a second liquid forming an interface therebetween; a temperature sensor which senses the temperature of the liquid lens; and a controller which controls a driving signal for the liquid lens, wherein the controller controls the driving signal by using a first function when the sensed temperature is in a first temperature range and by using a second function different from the first function when the sensed temperature is in a second temperature range.

A lens module includes a holder, at least one lens, a base, a sensor, an anisotropic conductive film, a flexible circuit board, and a filling member. The filling member is arranged at a side of the sensor and received in the holder. Along a direction of an optical axis of the lens module, a distance between the side of the sensor and the anisotropic conductive film is defined as a first value, a thickness of the filling member is defined as a second value, a ratio of the second value to the first value is in a range of 0.8 to 1. An electronic device having the lens module is also provided.

Configurations and compositions for frameworks supporting optics such as lenses are described that provide an invariant structure regardless of temperature swings, thereby maintaining alignment and focus. Frameworks may comprise tiered structures of materials having multiple distinct coefficients of thermal expansion. An optical framework includes a first framework portion coupled to a first lens and a second framework portion coupled to a second lens. The first framework portion and second framework portion comprise materials having a coefficient of thermal expansion such that expansion of the first framework portion in one direction is offset by expansion of the second framework portion in an opposite direction.

An optical assembly includes a lens unit capable of being moved along an optical axis of the optical assembly. The lens unit includes a lens mount for holding at least one lens. The optical assembly further includes a sleeve for receiving the lens mount. The lens mount is in sliding contact with and movable in relation to the sleeve as the lens unit is moved along the optical axis. The lens mount is formed of or comprises at its outer surface a self-lubricating material, and/or the sleeve is formed of or comprises at its inner surface a self-lubricating material.

According to an embodiment disclosed in the present document, an electronic device may include: a lens frame at least partially including a thermally conductive material; a pair of wearable members which can be rotatably coupled to the lens frame; at least one lens disposed in the lens frame; and transparent conductive lines disposed on the lens. The transparent conductive lines may be connected to the thermally conductive material of the lens frame to receive heat transferred from the lens frame. Other various embodiments are possible.