Abstract: A method for producing a camera module. An objective is aligned with respect to an image sensor and is then fixed in position by being joined to a support that receives the image sensor, a housing that surrounds the image sensor, or an interposed connection structure as a joining partner. The objective is mounted on spacer elements, which are initially still movable, and is then aligned with respect to the image sensor by moving the spacer elements. After the objective is aligned, the spacer elements are welded to the objective and the joining partner. A camera module is also described.

Abstract: The optical lens includes: a first lens member including a first lens barrel and at least one first lens mounted in the first lens barrel; a second lens member including a second lens barrel and at least one second lens mounted in the second lens barrel, the at least one second lens together with the first lens forming an imaging optical system; and a first adhesive located in a first gap between the first lens member and the second lens member, the first adhesive supporting and fixing the first lens member and the second lens member after curing. A surface of the first lens barrel and/or a surface of the second lens barrel have at least one recess. The present disclosure also provides a corresponding camera module and assembly methods for the optical lens and the camera module.

Abstract: An optical element driving mechanism includes a movable assembly, a fixed assembly, and a driving assembly. The movable assembly is configured to be connected to an optical element. The movable assembly is movable relative to the fixed assembly. The driving assembly is configured to drive the movable assembly to move relative to the fixed assembly in a range of motion. The optical element driving mechanism further includes a positioning assembly configured to position the movable assembly at a predetermined position relative to the fixed assembly when the driving assembly is not operating.

Abstract: A camera assembly for inclusion in a camera is described. The camera assembly includes a lens barrel and a retaining mechanism that is configured to restrict movement of the lens barrel relative to the retaining mechanism. The retaining mechanism is configured to be attached to a mounting surface of a camera enclosure, such that position of the camera assembly remains fixed relative to the camera enclosure.

Abstract: An interface facility has a first facility element connected to an ocular, a device case configured to connect to a smart device, a second facility element connected to the device case, the first and second facility elements being configured to connect to each other in a connected condition and to detach from each other, the first facility element being registered with a first optical axis associated with the ocular, the second facility element being registered with a second optical axis associated with the camera, the first and second optical axes being registered with each other when the first and second facility elements are in the connected condition, such that the camera records images generated by the ocular. The first and second facility elements may comprise a bayonet mount.

Abstract: Disclosed is a method for assisting a user in taping an adhesive label to a surface of an ophthalmic lens with an initial contour prior to edge grinding, the method including:—holding of the ophthalmic lens with its initial contour by a holder,—determining, from geometric data for the final contour of the ophthalmic lens to be produced, of a position of the final contour inside the initial contour of the ophthalmic lens,—creating a visual aid for the user enabling the latter to apply the adhesive label to the ophthalmic lens with its initial contour prior to edge grinding, such that the adhesive label can be applied inside the final contour.

Abstract: A method for preparing an optical element for insertion into an optical system of an endoscope, wherein the optical element has an optical axis and a peripheral surface that is basically parallel to the optical axis, the method including: arranging the optical element in a mounting of a spindle which rotates the optical element about an axis of rotation of the spindle, aligning the optical element on the spindle such that the optical axis of the optical element coincides with the axis of rotation of the spindle, and subsequent to the aligning, removing an outer peripheral surface region of the optical element until the peripheral surface has a constant spacing from the optical axis of the optical element, wherein the removing of the outer peripheral surface region takes place by laser ablation.

Abstract: An imaging lens assembly has an optical axis, and includes a plurality of optical elements. The optical elements include a light blocking sheet, and the light blocking sheet includes a through hole surface, a first surface, a second surface, a peripheral surface and a plurality of basin structures. The through hole surface surrounds the optical axis. The first surface and the second surface are connected to and surround the through hole surface. The peripheral surface is connected to the first surface and the second surface, and the peripheral surface is farther from the optical axis than the through hole surface from the optical axis. The basin structures are arranged in interval and around the optical axis, each of the basin structures is caved in from the first surface to the second surface, and each of the basin structures protrudes on the second surface.

Abstract: An optical driving mechanism is provided, including a holder, a fixed portion, a first elastic element, and a first adhesive element. The holder is configured to connect an optical element, and moves relative to the fixed portion. The holder is movably connected to the fixed portion via the first elastic element, and the first elastic element is connected to the holder or the fixed portion via the first adhesive element.

Abstract: A lens barrel (10) comprises a holding frame (51); a guide pole (53); a focusing lens unit (52) that is slidably guided by the guide pole (53) and moves in an axial direction; an actuator that moves the focusing lens unit (52) in the axial direction relative to the holding frame (51); and leaf springs (55) that support the guide pole (53) so as to allow movement in the axial direction relative to the holding frame (51), at an amplitude smaller than the stroke of the focusing lens unit (52).

Abstract: A magnetic preloading air bearing comprises an air floating substrate, a plurality of preloading assemblies are disposed around the air floating substrate, an annular air floating structure extends and protrudes at one side of the air floating substrate, a shunt assembly is disposed inside the air floating substrate, a lateral of the shunt assembly is disposed corresponding to an inner side of the air floating structure, an air inlet channel penetrates and extends at the other side of the air floating substrate, and the air inlet channel is disposed corresponding to the shunt assembly; and the preloading assembly is connected to the air floating substrate through a fixing rod. The present disclosure aims to provide the magnetic preloading air bearing that has high stability and high precision and is not prone to an air hammer phenomenon, and the linear platform having the bearing.

Abstract: A lens assembly includes a stack of thermoplastic lenses that are aligned along a common optical axis and that are interleaved with metallic disks having an open central portion. Peripheral portions of each of the thermoplastic lenses adhere to the interleaved metallic disks to form a fused stack of lenses. A method of making the fused stack of lenses is disclosed and includes subjecting a set of interleaved lenses and metallic disks to an alternating current electromagnetic field that induces eddy currents in the metallic disks, causing heating that melts the adjacent lenses. The melted thermoplastic lens material adheres to adjacent metallic disks. The metallic disks reduce stray light from entering the lens stack, while permitting light to enter central portions of the lenses.

Abstract: There is provided a laminated lens array in which a first lens element arranged on a distal end side and a second lens element arranged on a proximal end side are stuck and laminated in a lamination direction, wherein outer faces of a laminated body including the first lens element and the second lens element are located in the lamination direction and have concaves formed being recessed toward a center of the laminated body at least on parts of the outer faces in the lamination direction.

Abstract: A probe for performing endomicroscopy, including: a light source; a waveguide coupled to the light source; a diffraction grating, the waveguide directing light from the light source to the diffraction grating; and a lens having a first aspheric surface and a second biconic surface, diffracted light from the diffraction grating being directed into the aspheric surface of the lens and being emitted from the biconic surface of the lens towards a transparent cylindrical surface of the probe.

Abstract: An imaging lens system includes a lens element and an aperture element surrounding an imaging optical path and forming an aperture. The aperture element includes a first conical surface, a second conical surface and a contact surface. The first and second conical surfaces surround the imaging optical path. The contact surface is perpendicular to the imaging optical path and contacts the lens element. When the imaging lens system is in a first environment condition, the first conical surface is in contact with the lens element, the second conical surface is spaced apart from the lens element, and the aperture is aligned with the optically effective region. When the imaging lens system is in a second environment condition, the second conical surface is in contact with the lens element, the first conical surface is spaced apart from the lens element, and the aperture is aligned with the optically effective region.

Abstract: An image pickup apparatus communicably mountable with a lens apparatus including a driver configured to drive a driven member includes an acquirer configured to acquire information on a noise source, and a determiner configured to determine a control over the driver using the information on the noise source.

Abstract: A telescopic sight for detachably connecting a night vision device includes a first external barrel, a regulation element, a first lens module and a transmission module. The first external barrel includes at least one opening, and an end of the first external barrel is configured for detachably connecting the night vision device. The regulation element is disposed on the first external barrel. The first lens module is located at an inner side of the first external barrel. The transmission module is connected between the regulation element and the first lens module via the at least one opening. When the regulation element is driven by an external force, the regulation element drives the transmission module move along an optical axis of the telescopic sight, such that the transmission module drives the first lens module moves along the optical axis to regulate focal length of the telescopic sight.

Abstract: A camera blocks light outside a lens barrel entering an optical path in a lens barrel. A camera includes a frame and a lens barrel accommodating a lens. The lens barrel includes a stationary cylinder including a cylindrical wall having a through-cam groove extending with its circumferential position changing in X-direction, a drive cylinder rotatable relative to the stationary cylinder without moving in X-direction, a rotary cylinder rotatable relative to the stationary cylinder and movable in X-direction, a key cylinder movable in X-direction together with the rotary cylinder, a linearly movable cylinder rotatable relative to the rotary cylinder together with the key cylinder. The camera further includes a connecting frame attached to a rear end of the key cylinder in the lens barrel and a rear light shield including a bellows connecting the connecting frame and the frame in an expandable manner.

Abstract: The invention provides a light generating device (1000) comprising (i) a plurality of n light sources (100), and (ii) an optical component (1200) comprising an array (200) of prismatic elements (300), wherein: (a) the plurality of n light sources (100) comprise a first subset of one or more first light sources (110) configured to generate collimated first light source light (111) and a second subset of one or more second light sources (120) configured to generate collimated second light source light (121), wherein n>2; (b) the array (200) of prismatic elements (300) is configured in a light receiving relationship with the n light sources (100), wherein the array of prismatic elements (300) comprises k1 parallel arranged first prismatic faces (201) and k2 parallel arranged second prismatic faces (202), wherein k1>2 and wherein k2>2, wherein the first prismatic faces (201) and the second prismatic faces (202) are not mutually parallel; (c) the first light sources (110) are configured to irradiate the f

Abstract: A camera has a more integrated appearance and higher dustproof and light-shielding performance. A camera includes a frame accommodated in a housing having a front surface with an opening, and a lens barrel accommodating at least one lens. The lens barrel includes a stationary cylinder including a cylindrical wall extending in X-direction from a base, and a drive cylinder that causes an extendable unit located radially inward front the cylindrical wall of the stationary cylinder and extendable in X-direction through the opening to extend and retract. The drive cylinder includes a cylindrical portion rotatable between the cylindrical wall of the stationary cylinder and an inner circumferential edge of the opening in a front cover. The lens barrel further includes a cover cylinder covering the inner circumferential edge of the opening in the front cover and the cylindrical portion of the drive cylinder and rotatable relative to the stationary cylinder together with the drive cylinder.

Abstract: According to various embodiments, a device may include a light-emitting diode (LED) to generate optical radiation at an operational wavelength with a divergent emission profile, such as a Lambertian emission profile, relative to a planar face thereof. A metalens may be positioned to modify the divergent emission profile of the optical radiation from the LED to have a modified transmission profile. The metalens may comprise, for example, a substrate and a two-dimensional array of passive pillars that extend from the substrate with a radially symmetric pattern of varying pillar diameters. The pillars may be spaced from one another according to a uniform subwavelength interelement spacing. The diameters of the pillars are selected as a function of the operational wavelength to provide a target phase gradient that modifies the divergent emission profile of the optical radiation from the LED to have the modified transmission profile.

Abstract: An optical scanning microscope includes an illumination system (160) and an objective lens (134) operable together to provide the excitation radiation (152, 154) in a focal volume (124) at sufficient intensity to cause emission of emission radiation from a sample in the focal volume. The objective lens (134) is scanned by an objective scanner (130, 132). In this example an x-y transducer (xyXD) (130) is connected to a kinematic flexure mechanism (132) which acts as a scanning lens mount. The kinematic flexure mechanism is operable to scan the objective in two dimensions transverse with respect to the objective's optical axis so as to scan the emitting focal volume in corresponding dimensions. The kinematic flexure mechanism may be a unitary 3D-printed member.

Abstract: An optical interface assembly, comprising a lens, an optical receptacle, a stub disposed in the optical receptacle. The lens includes a convex surface farther away from the stub and a flat surface near the stub, the flat surface and a cross section of the lens being disposed at an inclined angle from each other. A first end surface of the stub facing the lens is disposed at an inclined angle relative to an axis of the stub. When a light beam is coupled into the stub by the lens, a portion of a return light reflected from the first end surface of the stub is reflected to an outside of the lens.

Abstract: Disclosed is a voice coil motor, the motor including a mover having a bobbin equipped with a lens and a coil block secured to an outer circumference of the bobbin; a stator having a magnet that is disposed in such a way as to face the coil block; elastic members coupled to a lower end of the bobbin and connected to both ends of the coil block; a base supporting the elastic members and the stator; and a cover can covering the mover, the stator and the base, with an opening being formed in the cover can to expose the lens therethrough, wherein each of the elastic members includes a terminal portion that extends between the cover can and a side surface of the base, the terminal portion including a short-circuit prevention portion so as to inhibit a short-circuit between the terminal portion and the cover can.

Abstract: A photonic device includes a PCB having an integrated circuit mounted thereon, with a cap mounted to the PCB and carrying a lens positioned over the integrated circuit. The cap is formed by: an outer wall mounted to the PCB, extending upwardly from the PCB, and surrounding a portion of the integrated circuit; a first retention structure extending inwardly from the outer wall and across the integrated circuit, the first retention structure having a hole defined therein; and a second retention structure having a hole defined therein, the second retention structure being affixed within the first retention structure such that the hole in the second retention structure is axially aligned with the hole in the first retention structure. The lens is mechanically constrained within the cap between the first retention structure and the second retention structure.

Abstract: Systems, devices, and techniques related to projecting dynamic feature patterns onto a scene for use in stereoscopic imaging are discussed. Such techniques may include implementing a dynamic transmissive element in an optical path between a projector and the scene to modify a static pattern emitted from the projector to illuminate the scene with a dynamic pattern.

Abstract: An embodiment comprises: a housing supporting a first coil; a bobbin supporting a magnet, the bobbin being moved inside the housing in a first direction, which is parallel with an optical axis, by an electromagnetic interaction between the magnet and the first coil; an elastic member coupled to the bobbin and to the housing; a first circuit board electrically connected to the elastic member; a second circuit board arranged below the housing; a second coil arranged on the second circuit board; and a support member electrically connecting the first circuit board and the second circuit board or electrically connecting the elastic member and the second circuit board.

Abstract: The invention relates to a method for thermally stable joining of a glass element to a support element, wherein the glass element has a first coefficient of expansion and the support element has a second coefficient of expansion differing from the first coefficient of expansion. The method thus comprises a step of attaching an intermediate glass material to the support element, wherein the intermediate glass material has a third coefficient of expansion which substantially corresponds to the second coefficient of expansion. In addition, the method comprises a step of local heating of the intermediate glass material in order to join the glass element to the support element via the intermediate glass material.

Abstract: A lens unit includes a lens barrel having a barrel wall and a snap groove surrounded and formed by the barrel wall; and a first lens group snap-fitted and secured in the snap groove, wherein the first lens group has a light-incident end on which external light incidents; the light-incident end protrudes from an end surface of the barrel wall; and the first lens group includes at least one lens.

Abstract: A wearable device which is lighter, relatively safer at the time of breakage, and smaller than a wearable device having a lens substrate that is a glass substrate.

Abstract: A flexible cover window includes a lower glass substrate including a first lower glass substrate; a second lower glass substrate, the first lower glass substrate and the second lower glass substrate being spaced apart from each other; an upper glass substrate that is disposed above the lower glass substrate and is thinner than the lower glass substrate; and an adhesive member disposed between the lower glass substrate and the upper glass substrate and extending between the first lower glass substrate and the second lower glass substrate.

Abstract: A packaging structure of head mounted terminal and a head mounted terminal are disclosed. The packaging structure comprises an annular rear casing and a soft rubber member, and the soft rubber member is disposed between the rear casing and two lenses of the head mounted terminal. The outer edge of the soft rubber member is fixed on the inner ring of the rear casing, the soft rubber member comprises two lens barrels arranged symmetrically, and the two lens barrels are respectively sleeved on the two lenses of the head mounted terminal. The soft rubber member further comprises an extending and folding part disposed on an outer periphery of the lens barrel, which is used to realize the extension of the lens barrel with the left and right movement of the lens.

Abstract: An imaging element-mounting board includes a board area having a board disposed and a plurality of reinforcement portions disposed around the board area. The plurality of reinforcement portions are independent from each other.

Abstract: A lens includes a cover part and a light-shielding part. The cover part includes a lens part, a connection part extending downward from lateral sides of the lens part, and one or more flange parts each extending outward from a lower-end portion of the connection part. The lens part and the connection part define a recess having an opening facing downward. The flange parts extend outward from a periphery of the opening of the recess. The lens part, the flange parts, and the connection part are formed of a thermosetting first resin and continuous to one another. The light-shielding part covers outer lateral surface of the connection part and is formed of a thermosetting second resin having a greater light-absorptance or a greater light-reflectance than the thermosetting first resin. The flange parts have a greater thickness than the connection part.

Abstract: The disclosure is directed to an optical sight for a firearm comprising a reticle operationally configured to visually inform a user when the optical sight is misaligned from an intended target and operationally configured to visually inform the user as to the direction of misalignment.

Abstract: The disclosure is directed to an optical sight for a firearm comprising a reticle operationally configured to visually inform a user when the optical sight is misaligned from an intended target and operationally configured to visually inform the user as to the direction of misalignment.

Abstract: An optical unit is provided and includes: a movable body having an optical module; a fixed body; a rolling support mechanism which supports the movable body rotatably around the optical axis of the optical module with respect to the fixed body; and a rolling drive mechanism which turn the movable body around the optical axis. The rolling support mechanism includes: at least one pair of protruded parts which protrude from one of the movable body and the fixed body towards the other thereof and which are disposed at positions facing each other with the optical axis interposed therebetween in a direction intersecting the optical axis, and an elastic member whose one end part is attached to the protruded part and an other end part is attached to the other of the movable body and the fixed body, and which turnably support the movable body around the optical axis.

Abstract: One embodiment of a lens driving apparatus may comprise: a bobbin having a first coil disposed on the outer circumferential surface thereof; a position detection sensor which is disposed on the outer circumferential surface of the bobbin and which moves together with the bobbin; a first magnet disposed opposite to the first coil; a housing for supporting the first magnet; upper and lower elastic members which are coupled to the bobbin and the housing; and a plurality of wirings which are disposed on the outer circumferential surface of the bobbin so as to electrically connect at least one of the upper or lower elastic members with the position detection sensor.

Abstract: An optical element adjusting mechanism is provided, including a frame, a carrier, and an optical element. The frame includes a plurality of first positioning portions. The carrier includes a hollow body, a first axial portion connected to the hollow body, and a plurality of second positioning portions connected to the hollow body. The hollow body is connected to the frame through the first axial portion. The plurality of second positioning portions are disposed corresponding to the plurality of first positioning portions. The optical element is fixed on the hollow body. The plurality of second positioning portions are fixed to the plurality of first positioning portions through a plurality of adhesives. An optical element adjusting system and a projection device are also proposed. The optical element adjusting mechanism, the optical element adjusting system, and the projection device quickly, easily, and accurately adjust a rotation angle of the optical element.

Abstract: The invention relates to a device for generating light, in particular for a vehicle passenger compartment ceiling lamp (100), comprising: a separating tube (7) made of a material that is opaque to the radiation used, which is intended to be placed in an aperture (101) forming an exit for the illuminating light, is tubular along an axis orthogonal to the aperture and is of “c”-shaped radial cross section, forming an axial window (71), a bounding light guide (53) encircling the separating tube (7) having an annular exit dioptric interface (55), a base (57) in the axial extension of the exit dioptric interface, axial extensions (59), extending axially at least in segments the base (57), comprising entrance dioptric interfaces (61), which are placed facing bounding light sources (51), an illuminating light guide (33), which is located axially facing the illuminating light source (31) of the separating tube and axially removed from the aperture (101) comprising an entrance dioptric interface (35), which is placed

Abstract: A reflective module includes a rotation plate supported by an internal wall of a housing; and a movable holder supported by the rotation plate and including a reflective member. The movable holder moves the reflective member in a first axis direction perpendicular to an optical axis and in a second axis direction perpendicular to the optical axis and the first axis direction. At least two ball members aligned in the first axis direction are disposed in at least one of a first gap between the housing and the rotation plate and a second gap between the rotation plate and the movable holder. A guide groove is disposed in the rotation plate and in at least one of the housing and the movable holder, and the ball members are inserted into the guide grooves. The ball members are inserted into and three-point supported by the guide grooves.

Abstract: An embodiment comprises: a housing; a bobbin arranged inside the housing; a first coil arranged on the bobbin; first magnets arranged on first to fourth corner portions of the housing, respectively; a first circuit board which is arranged on a first side portion of the housing, and which comprises a first terminal, a second terminal, a third terminal, and a fourth terminal; a first position sensor arranged on the first circuit board and electrically connected to the first to fourth terminals; a first upper elastic unit arranged on the first corner portion of the housing; a second upper elastic unit arranged on the second corner portion of the housing; a third upper elastic unit arranged on the third corner portion of the housing; and a fourth upper elastic unit arranged on the fourth corner portion of the housing. One end of the first upper elastic unit extends from the first corner portion to the first side portion of the housing and is coupled to the first terminal.

Abstract: Disclosed is a lens driving apparatus. The lens driving apparatus includes a base formed at a center thereof with a first opening; a housing coupled with the base and having a second opening corresponding to the first opening; a yoke installed on the base and including a horizontal plate having a third opening corresponding to the first opening and a vertical plate protruding upward from the horizontal plate; a bobbin movably installed in the yoke and coupled with a lens module; a coil fixedly disposed around the bobbin; a plurality of magnets provided at the vertical plate of the yoke to face the coil; and a spring installed on at least one of upper and lower portions of the yoke to return the bobbin, which has moved up due to interaction between the magnet and the coil, to its initial position.

Abstract: A method adjusts a first element of a lithography apparatus toward a second element of the lithography apparatus via a tunable spacer which is arranged between the first element and the second element. The method includes: determining an actual location of the first element; determining a nominal location of the first element; unloading the tunable spacer; adjusting a height of the tunable spacer to bring the first element from the actual location to the nominal location; and loading the tunable spacer.

Abstract: A lens module is provided, including a top wall with a light through hole and a barrel wall bent and extending from an edge of the top wall. The lens group includes a special-shaped lens which includes a side surface connecting an object side surface and an image side surface. The side surface includes a first abutting surface connected to the object side surface, and the first abutting surface is arranged at an included angle with an optical axis. The barrel wall includes an inner surface close to the optical axis, and the inner surface includes a second abutting surface arranged opposite to and parallel to the first abutting surface. A distance H between the first abutting surface and the second abutting surface is satisfied: 0 ?m<H?3 ?m. A stability of the lens module is improved and an imaging quality of the lens module is ensured.

Abstract: An arrangement of a microlithographic imaging device, such as one that operates in the EUV range, includes a holding device for holding an optical element. The optical element includes an optical surface and defines a plane of main extension, in which the optical element defines a radial direction and a circumferential direction. The holding device includes a base unit and more than three separate holding units. The base unit includes a plurality of support interface units, which are spaced apart from one another in the circumferential direction, for connecting the holding device to a support structure. The holding units are connected to the base unit and distributed along the circumferential direction and spaced apart from one another. The holding units hold the optical element with respect to the base unit.

Abstract: An optical system is provided, including a holder, a fixed module, a driving assembly, and a first resilient member. The holder is used for holding an optical element that defines an optical axis. The fixed module is movably connected to the holder and has a housing and a base connected to the housing. The base has a bottom surface parallel to the optical axis and a first pillar forming a first surface that is not parallel to the optical axis. The driving assembly drives the holder to move relative to the fixed module. The first resilient member is disposed on the first surface and movably connects the holder with the fixed module.

Abstract: An optical lens head, an camera module, and an assembling method therefor, wherein the camera module comprises a photosensitive chip (23) and an optical lens head (10); said optical lens head (10) comprises a plurality of optical lenses (111); the assembly position of one of the optical lenses (111) is adjustable; each of the optical lenses (111) is black-lacquered and matte-treated; a connecting portion (1113), a light-beam entrance hole (1114) and a light-shielding portion (1115) are formed on the corresponding optical lenses (111), such that the individual optical lenses (111) can be successively and jointly assembled together, eliminating the need of a spacing ring, a diaphragm, a lens barrel and other structural components used in a conventional camera module, thereby improving manufacture precision, production yield and imaging quality of the camera module.

Abstract: A lens driving module for holding and moving a lens is provided, including a lens holder, a first electromagnetic driving assembly disposed on the lens holder, a base, a second electromagnetic driving assembly disposed on the base, and a first elastic member. The lens holder has an accommodating space and a first surface, and the lens is disposed in the accommodating space. The base has a connecting surface and a first contacting surface. The connecting surface and the first contacting surface are coplanar. The second electromagnetic driving assembly is adjacent to the first electromagnetic driving assembly, and the first elastic member is connected to the connecting surface and the lens holder. When the lens holder contacts the base, the first surface contacts the first contacting surface.

Abstract: A light source device according to an embodiment of the present disclosure includes: a light source section; a rotating body; a motor; a housing; one or more lens groups; a lens holding section; and an adjusting mechanism. The rotating body includes a fluorescent light body. The fluorescent light body is excited by excitation light from the light source section to output fluorescent light. The motor drives the rotating body. The housing accommodates the rotating body. The one or more lens groups gather the excitation light from the light source section and direct the excitation light toward the rotating body. The lens holding section holds the one or more lens groups. The adjusting mechanism adjusts a distance between the rotating body and the one or more lens groups.