Abstract: A fitting includes first and second threaded fitting components, a conduit gripping device, and a stroke resisting member having a first axial length, the stroke resisting member being disposed between a threaded portion of the first fitting component and a radially extending portion of the second fitting component. The stroke resisting member is axially engaged by the radially extending portion of the second fitting component when the first and second fitting components are joined together to a first relative axial position, such that a tightening torque beyond the first relative axial position is increased by the axial engagement. The stroke resisting member is plastically compressed to a second axial length smaller than the first axial length when the first and second fitting components are joined together to a second relative axial position advanced beyond the first relative axial position.

Abstract: One aspect of the invention provides a sealing device for connecting a length of corrugated tubing. The sealing device includes: a body member defining a sleeve portion; a nut adapted and configured for threaded engagement with the body member, the nut defining an internal shoulder; and a bushing. The bushing includes: an annular internal rib located on a proximal end, the annular internal rib adapted and configured to engage a corrugation valley of corrugated tubing; a medial external rib adapted and configured to be engaged by the internal shoulder of the nut and to advance the bushing within the sleeve portion of the body member; and a trailing hinged portion located on a distal end. The trailing hinged portion is adapted and configured for inward compression against the corrugated tubing received within the bushing as the nut is advanced over the trailing hinged portion.

Abstract: A fuel tank fueling portion structure includes: a fueling pipe that is in fluid communication with a fuel tank, the fueling pipe being provided with a fueling opening; a lid that is openably and closably provided at a vehicle body, the lid in a closed state covering the fueling opening from a vehicle body outer side; an on-off valve that is provided at a flow channel inside the fueling pipe and closes off the flow channel, the on-off valve opening up the flow channel when pressed by the fueling nozzle; and a valve retention device that is provided in the fueling pipe, the valve retention device retaining an open state of the on-off valve that has been opened by pressing from the fueling nozzle, and releasing the retention of the open state of the on-off valve when the lid goes into a closed state.

Abstract: An apparatus for preventing hose barb leaks, blowouts, and damages contains a hose barb, a bumper, and a band clamp. The hose barb has a double configured hose barb serration arrangement for preventing leaks and blowouts. In particular, the hose barb has a pair of reverse-angled serrations and a plurality of secondary serrations. Additionally, the hose barb also includes a first threaded portion and a shaft portion. The first threaded portion engages to a second threaded portion of the bumper. When the apparatus is in use, the hose portion is pressed against the pair of reverse-angled serrations and the plurality of secondary serrations using the band clamp. In order to do so, the band clamp is positioned adjacent the bumper such that a body of the band clamp perimetrically surrounds the pair of reverse-angled serrations and the plurality of secondary serrations.

Abstract: A quick-acting coupling for the disconnectable connection of two pipelines (C1, C2) which has a female element (A) equipped with a locking device (6) slidingly mounted in a body (1) of the female element and equipped with a raised portion-and wherein the locking device is movable between a first position in which the raised portion cooperates with a flange (102) of a male part (B), and a second position in which the locking device allows the male part to release itself from the female element, and wherein a safety device retains the locking device in the first position when the male part is in the configuration fitted in the female element and wherein when the locking device is in the first position, a force on the safety device releases the locking device from the first position.

Abstract: A device for releasable fixed holding of a welding wire in a welding wire guide is described. This device is characterized in that the welding wire guide includes a cage for radially displaceable braking bodies, wherein a locking cone surrounds the braking bodies, and that, of the two cooperating functional elements, formed on the one hand by the welding wire guide and on the other hand by the locking cone, one is mounted in a non-displaceable manner in a holder and the other is mounted to be axially displaceable against a spring force with respect to the non-displaceable functional element.

Abstract: A locking device for pipes, comprising an inner and an outer pipe provided with adjoining and corresponding circumferential grooves for releasable locking engagement via a locking ring fitted in the grooves and thus releasable locking between the inner and the outer pipe by alteration of the radius of the locking ring, wherein the locking ring has an open section or circle sector along the periphery thereof and is provided, at least at the two radial ends thereof, interrupted by the open section, with two respective guide members comprising respective guide surfaces that are slanted relative to the periphery, and wherein a first one of the guide members is provided with an end stop and a second one of the guide members is provided with a control mechanism protruding through an oblong opening provided through the outer pipe along a portion of its radial groove, wherein the radial displacement of the control mechanism along the oblong opening increases the open section or circle sector of the locking ring while

Abstract: The invention relates to a tapping fitting, having a saddle component for positioning on and cohesively connecting to a tubular component, and having a clamping device for clamping the saddle component on the tubular component, characterized in that the clamping device has a tiltable clamping lever with a sliding profile, wherein the clamping lever is mounted via the sliding profile in a bearing shell in a first peripheral portion of the saddle component, and wherein a clamping band is attached on one side to the clamping lever at a distance from a rotation axis about which the clamping lever is tiltable in the bearing shell, and on the other side to a second peripheral portion, located opposite the first peripheral portion, of the saddle component, such that in the case of a tapping fitting positioned on a tubular component, when the clamping lever is tilted, the clamping band is biased and the tapping fitting is pressed against the tubular component.

Abstract: An air conditioning apparatus and an air conditioning method for cooling a passenger space of a vehicle that accommodates a user include a tank that is capable of storing compressed air, and a control unit to release the compressed air stored in the tank into the passenger space. Energy that is generated without putting a workload on the power source or electric power of the vehicle is used for at least one process of compressing air in the tank, cooling the compressed air stored in the tank, and heating the compressed air stored in the tank.

Abstract: An anti-ice buildup system for roof vent pipes that is easy to install and that prevents ice buildup in roof vent pipes. The anti-ice buildup system for roof vent pipes generally includes a first segment and a second segment extending downwardly from the first segment. At least a portion of the first segment is adapted to remain outside of a vent pipe and at least a portion of the second segment is adapted to extend downwardly through an upper opening in the vent pipe. The second segment is constructed of a thermal conductive material to conduct heat from the vent air and sunlight.

Abstract: A damping device damps or prevents pressure shocks, such as pulsations, in hydraulic supply circuits, preferably in the form of a silencer, and has a damping housing (1) surrounding a damping chamber (19), with a fluid inlet (11) and a fluid outlet (13). A fluid receiving chamber (19) extends between the fluid inlet and fluid outlet. During operation of the device, a fluid flow coming from the fluid inlet (11) in a through-flow direction (15) traverses the damping chamber (19) toward the fluid outlet (13). Parts of the fluid receiving chamber (19) extend in a direction transverse to the through-flow direction (15). The fluid receiving chamber (19) is located directly adjacent to the fluid inlet (11) and the fluid outlet (13).

Abstract: A system for providing upkeep and maintenance to piping including in improved pipe freezing apparatus. In a specific embodiment, the system is quite useful to replace worn valves that may require digging underground to expose enough of the pipe system. Novel tools for removing the valve are additionally provided by the present invention. The preferred embodiment further improves upon job safety when using CO2 (dry ice) evaporating and venting the chamber as a gas displacing oxygen. The novel design of the pipe freezing apparatus described herein can be installed by hand without tools. Said design further obviates a need for a specifically designed vent for the pipe freezing apparatus.

Abstract: A method includes providing a die having a cylindrical body terminating in a rounded end, wrapping a fibrous material around the die while the fibrous material is tensioned, wherein the fibrous material is placed to extend in a continuous manner across the width of the rounded end of the body and to opposite sides of the cylindrical body, applying a curable resin on the die, curing the resin, and removing a reinforced cured resin plug from the die.

Abstract: A repair assembly and method of use is provided. The repair assembly includes a liner assembly for repairing a pipe system including a first pipe, a second pipe extending from the first pipe, and in some embodiments a third pipe extending from the second pipe. The third pipe may include multiple pipes. The repair assembly further includes a bladder assembly. The liner and bladder assembly are configured to work together to be positioned within the first, second, third and any additional pipes to line and repair all of the components of the pipe system in a single repair. Such repair will reduce the amount of time required to repair such pipe systems, and will increase the efficiency of repairing pipes.

Abstract: A bend stiffener assembly for coupling a tubular member includes a nonmetallic flange member having a central bore for receiving a tubular member and an elastomeric member coupled to the flange member and having a central bore for receiving the tubular member, wherein the elastomeric member is configured to provide a bending resistance to a tubular member extending therethrough.

Abstract: An enclosure for machine tools, such as a CNC machine, is provided. The transformable enclosure may include a series of modules or panels movable between a series of open and closed positions to allow an operator increased control over the production of a particular part and allowing parts of various shapes and dimensions to be machined without the need to switch between multiple machines.

Abstract: A tensile parallelogram arm that mimics parallelogram counterbalancing structures and which can be folded into a compact form. The assembly includes a gimbal to which a supported payload is attached.

Abstract: A carrier apparatus for a medical device in a medical treatment facility includes a device holder that holds a medical device and a container that receives the device holder with a medical device, such that the device holder can move between an upper resting position in the container and a lower operating position in which a medical device held by the device holder can be used by medical staff.

Abstract: Portable collapsible fluid containment devices are disclosed comprising sidewall support braces that rotate from a collapsed generally horizontal position to a raised generally vertical position and lock into place. The sidewall braces may be attached to at least one sidewall of the containment device, and when raised support the sidewall in a fluid containment configuration. The sidewall braces comprise a base support leg, a sidewall support arm rotatably mounted on the support leg, and a locking tab for holding the sidewall support arm in the generally vertical position.

Abstract: A goal securement device includes a ground engagement system, a ground securement system, a goal securement system, and a goal securement monitoring system. In an embodiment, the systems work cooperatively to secure a goal to the ground and monitor the status of such securement. Embodiments of each system and embodiments of various components, aspects, or features of each system are described.

Abstract: A construction apparatus is provided and span members connected together at a first end by a first connector, the span members having a first end, a second end and a length. Sill brackets are connected to the first end of the span members and are configured to seat against an entrance sill. A second connector connects the span members together at a second end and is configured to seat against a hoistway structure. A plurality of apertures is arranged on the span members and configured to allow a connection to hoist devices. The span members rotate about the sill brackets and the lengths of the span members are longer than a horizontal distance from the entrance sill to the hoistway structure such that when the apparatus is in a seated orientation, the construction apparatus rests in an inclined orientation with respect to a substantially horizontal axis.

Abstract: A joining part with a wing comprises a through bore defining a fastening direction perpendicular to the wing. The wing comprises at least one non-through pocket configured to reduce the stress gradient in a peripheral zone of the through bore and/or at least one relief configured to reduce the stress gradient in a peripheral zone of the through bore, the non-through pocket forming a cavity in the thickness of the wing and comprising a curved side at a distance from the peripheral edge of the through bore. The joining part may be part of a lug, such as, for an aircraft fitting.

Abstract: A mounting system comprising a surface mount configured to operatively couple to an attachment surface, a movable mount, at least one adjustable arm assembly, at least one device mount, a latch coupled to one of the surface mount and the movable mount, and a catch coupled to the other of the surface mount and the movable mount. Each arm assembly includes at least one arm having a first end operatively coupled to the surface mount and a second end operatively coupled to the movable mount, wherein the second end is movable relative to the first end to move the movable mount relative to the surface mount in a first direction. Each device mount is configured to support a display device and is operatively coupled to the movable mount, such that each device mount is movable in a second direction.

Abstract: A lean-to rigging apparatus is described for installation in a shaft, such as an elevator shaft, having a wall and including at least one sill opposite the wall. The rigging apparatus includes a spanning beam, a sill support structure, a wall support member, and a hoist connector. The sill support structure on a first end of the spanning beam is designed to seat against a sill in the in the shaft while the wall support member on a second end of the spanning beam abuts against the opposite shaft wall. The sill support structure is rigidly connected to the spanning beam in a hingeless configuration and can seat against a sill in a plurality of seating positions. These seating positions allow the rigging apparatus to be positioned in a plurality of angles and therefore to be installed in shafts of different dimensions. The hoist connector is configured to allow a connection to a hoist device for hoisting various materials from one level to another within the shaft.

Abstract: A mounting bracket assembly for supporting a traffic control device on a mast arm or pole. The bracket includes a first clamp adapted to removably attach to the mast arm or pole or other elongate support, and is designed to be positioned vertically or horizontally. A second clamp is removably attachable to a strut member, such as a strut channel or tube.

Abstract: A speaker mount, assembly, and method of disengagement including a flange that circumscribes a perimeter of the mount. The speaker mount includes a support member coupled to the flange. The speaker mount includes a tab moveably coupled to the support member. The speaker mount includes a tab bias member functionally coupled to the tab. The speaker mount includes a path guide functionally coupled to the tab and to the support member. The path guide includes a vertical pathing and a rotational pathing that is substantially orthogonal to the vertical pathing. The speaker mount includes a blocking member functionally coupled to the tab such that in a blocking mode the blocking member obstructs free movement of the tab along the path guide and in a free mode does not obstruct.

Abstract: A lubrication system for providing lubrication to equipment is disclosed herein. Generally, the lubrication system includes a lubrication supply container, a lubrication pump, a conduit for providing the lubricant to the oilfield pump, and a control system for setting the operating parameters of the lubrication system. The lubrication system can also include a sensing device for measuring various operational aspects of the equipment and adjusting the amount of lubrication responsive to data measured by the sensing device.

Abstract: Disclosed herein are folded sheets of material for use as a structural member and assembly thereof. According to an aspect, a sheet of material defines one or more tabs, slots, and a plurality of fold lines. The fold lines are spaced such that folding the sheet along the fold lines places the slots in substantial alignment for receiving the at least one tab such that a structural member having a web formed in an interior thereof is formed.

Abstract: A split pressure vessel for processing of two flows encountered with energy exchange devices, consisting of two opposite facing end caps 1,2 having each a side port for low pressure 3,5 and one axial port 4,6 preferably in the same plane as the side ports. Each end cap has internal structurally integrated manifolds for high pressure 17,22 and low pressure manifold 19,24 connecting to axial ports of the internal energy exchange device. The high pressure side of one end cap may be structurally integrated with a circulation pump or booster 26 having a submersible or external motor.

Abstract: The invention relates to a pneumatic emergency shutdown system for a liquefied gas supply arrangement in which liquefied gas is supplied between a first tank and a second tank. The pneumatic emergency shutdown system comprises a pneumatic emergency shutdown circuit comprising pressure medium and provided in connection with the first tank and a pneumatic emergency shutdown link provided to the pneumatic emergency shutdown circuit, said a pneumatic emergency shutdown link connecting the pneumatic emergency shutdown circuit to a pneumatic controlling system of the second tank.

Abstract: A hydrogen storage composition, a hydrogen storage container and a method for producing the hydrogen storage container are provided. The hydrogen storage composition includes a thermally-conductive material, a hydrogen storage material, and optionally an elastic material. The hydrogen storage container includes a canister body and the hydrogen storage composition. After the hydrogen storage composition is placed into a canister body, a vacuum environment within the canister body is created, and a first weight of the canister body is recorded. Then, hydrogen gas is activated and charged into the canister body, and a second weight of the canister body is recorded. Then, a hydrogen storage amount is calculated according to the first weight and the second weight. If the hydrogen storage amount reaches the predetermined value, the hydrogen storage container is produced.

Abstract: A method and system are provided for reducing the volume and/or frequency of slugging in a fluid processing system that includes a pipeline for conveying produced fluids and a vessel for receiving the produced fluids from the pipeline. A control valve is provided in the pipeline upstream of the vessel. A pressure sensor and/or a level sensor is coupled to the vessel. Pressure information from the pressure sensor and/or level information from the level sensor is sent to at least one master control loop in a cascade control scheme. The master control loop output determines a set point of a slave control loop coupled to the control valve to achieve a pressure setpoint or a level setpoint. The slave control loop, also referred to as a pseudo-flow controller, determines whether the control valve opening needs be modulated to achieve the setpoint of the slave control loop. A method is also provided for retrofitting an existing fluid processing system.

Abstract: A method of hydraulic fracturing is provided which uses metal silicides to generate significant pressure inside a wellbore. The method comprises injecting a fracturing fluid and an aqueous or reacting fluid into the wellbore to react with the fracturing fluid. The fracturing fluid comprises metal silicide, which may be uncoated or coated, and hydrocarbon fluid. The reacting fluid comprises water or a solvent. A method of removing buildup in pipelines such as subsea pipelines which uses metal silicides to generate heat and pressure inside the pipeline is also provided. The method comprises injecting an organic slug and an aqueous slug. The organic slug comprises metal silicide and hydrocarbon fluid. The aqueous slug comprises water. Alternatively, there is also provided a method for purifying flowback water produced from a hydraulic fracturing process comprising adding metal silicide to the flowback water produced from a hydraulic fracturing process.

Abstract: An illumination apparatus includes a monolithic support substrate and light emitting diodes (LEDs) on one or more external sides of the support substrate. The support substrate may comprise an elongated extrusion enclosing a hollow core. The LEDs may be affixed to rigid or flexible electrical substrates. Each electrical substrate may be affixed to an external side of the extrusion and may include embedded LED circuitry. The hollow core may enable the extrusion to be received in a recessed socket of a light fixture, wherein the recessed socket provides structural support for the applicable end of the extrusion, rendering end caps or end socket adapters unnecessary. The light fixture may include a contact protruding from the recessed socket and the electrical substrates may include circuitry configured to couple the LEDs to a source of power not coupled to the protruding contact.

Abstract: A retrofit LED linear lamp lampholder for use with LED linear lamps having two terminal ends and used in lighting fixtures having spaced apart opposing end walls. The retrofit LED linear lamp lampholder has a pair of endcaps, each endcap having a first end that fits on one of the terminal ends of a LED linear lamp, and a second end with an engagement mechanism that is adapted to contact with one of the end walls of the lighting fixture. In at least in one of the endcaps there is a movement mechanism for moving said second end of said at least one endcap away from its associated terminal end of LED linear lamp. For use with conventional LED linear lamps with electrical pins at terminal ends, there are electrical contacts in of the endcaps having LED linear lamp energizing lead wires that exit the endcaps.

Abstract: An LED tube lamp comprises a plurality of LED light sources, an end cap, a power supply disposed in the end cap, a lamp tube, and an LED light strip. The lamp tube extends in a first direction along a length of the lamp tube, and has an end attached to the end cap. LED light strip is electrically connected the LED light sources with the power supply. The LED light strip has in sequence a first wiring layer, a dielectric layer and a second wiring layer. A thickness of the second wiring layer is greater than a thickness of the first wiring layer.

Abstract: A dental lighting device and process for using the same comprises at least one lighting system configured to light a predetermined dental zone with, over a first spectral range which is less than a reference wavelength between 405 nm and 475 nm, a first irradiance value E1 and, over a second spectral range greater than this reference wavelength, a second irradiance value E2, which lighting system is configured to function according to at least one first lighting mode in which the ratio of the first irradiance value E1 to the second irradiance value E2 is less than 12.

Abstract: A light emitting device includes a semiconductor laser element, a support member and a wavelength conversion member. The support member defines a through-hole through which laser light emitted from the semiconductor laser element passes. The wavelength conversion member has a lateral surface fixed to an inner wall of the through-hole, a first main surface having a first region to which the laser light is incident, a second main surface opposite to the first main surface, and an inclined surface connected to the second main surface and the lateral surface. The inclined surface is inclined such that a thickness of a peripheral portion of the wavelength conversion member is thinner than a thickness of a center portion of the wavelength conversion member. The inclined surface partially overlaps with the first region of the first main surface in plan view.

Abstract: An illumination device having a pole mount, a light support that extends from the pole mount, a lighting unit is connected to the pole mount, and a solar panel assembly is mounted to the lighting unit. In another embodiment an illumination apparatus is provided having a pole mount and a lighting assembly, and the pole mount has a first clamp half and a second clamp half. In another preferred embodiment there is flexible lighting assembly comprising a mount that is connected to a slider bar that supports a slider. A light support arm is supported on the slider and the light support arm connects to a central support member. A flexible member extends from the central support member to a telescopic lighting assembly having a light-generating device. A solar unit is connected to the slider bar and is wired to and powers the light-generating device.

Abstract: A flameless candle may include a side wall including an upper region and a lower region, a base engaged with the lower region of the side wall, and an upper surface extending from the upper region of the side wall to form an upper recess. The candle may also include a projection screen extending upwardly through an aperture in the upper surface. The position of the projection screen is fixed with respect to a position of the upper surface. Two sources of light positioned below the upper surface may project light through the aperture onto the projection screen. Circuitry may electrically connect to the first source of light and the second source of light. The circuitry may independently control each of the sources of light.

Abstract: A vehicle lamp 10 includes a first parabolic high-beam condensing reflector 16b, a second parabolic high-beam condensing reflector 17c and a parabolic high-beam diffusing reflector 16a. The first and second parabolic high-beam condensing reflectors 16b, 16c forms a high-beam condensed light distribution pattern by reflecting light emitted from light sources 18b, 18c. The high-beam diffusing reflector 16a forms a high-beam diffused light distribution pattern by reflecting light emitted from a light source 18a. A part 21 of a reflection surface of the high-beam diffusing reflector 16a is located in front of front end portions of the first and second parabolic condensing reflectors 16b, 16c.

Abstract: This exterior signaling and/or illuminating light, especially for an aircraft, comprises an array of exterior illuminating optical modules (7) ensuring the execution of at least one exterior signaling and/or illuminating function and an array of at least one deviating optical device (14), the illuminating optical modules being selectively activatable in groups of at least one illuminating optical module in order to selectively execute an exterior signaling and/or illuminating function conjointly with said deviating optical device.

Abstract: A light emitting diode lighting assembly for mounting to a curved mounting surface, such as a vehicle surface, includes a plurality of light emitting diodes, a circuit board, and a molded polymer section for surrounding and insulating the LEDs against the circuit board. The lighting assembly also includes a lens and a flexible molded housing surrounding a perimeter of the lens and the circuit board for sealing the lens to the circuit board.

Abstract: A reliable semiconductor light-emitting apparatus including an optical fiber and a wavelength converting layer and a headlight using the semiconductor light-emitting apparatus can include a ferrule holder attaching the wavelength converting layer. The ferrule holder can also attach a first ferrule covering the optical fiber, which transmits light emitted from a semiconductor light-emitting chip toward the wavelength converting layer. When the light-emitting apparatus is used for the headlight, the apparatus can be easily incorporated into a prescribed position of the headlight with confidence via a lamp holder.

Abstract: A vehicle lighting device includes a light guide lens, a light source and a reflector. The long light guide lens extends in a direction obliquely tilted with respect to a front-rear direction. The light source is disposed opposite an end of the light guide lens. The reflector is disposed behind the light guide lens. The light guide lens comprises a front face parallel to the longitudinal direction and a rear face with lens cuts aligned in the longitudinal direction. Each of the lens cuts comprises a rear first prism face that stands backward and a front second prism face parallel to the front face. Light that has exited backward from the light guide lens through the first prism face of a lens cut is reflected forward on the reflector toward the second prism face of a different lens cut.

Abstract: Provided is a vehicle lamp unit which includes an optical system configured to form a light distribution pattern ahead of a vehicle; and a rotary light shielding member configured to block at least a part of light of a light source. The rotary light shielding member includes a spiral light shielding portion formed to change a blocked quantity of light of the light source as the rotary light shielding member rotates around a rotating axis. The light shielding portion is configured to form a plurality of light distribution patterns such that a position of a cutoff line extending in a direction crossing a horizontal direction changes in the horizontal direction. Further, the light shielding portion is configured such that a change of a position of an edge portion projected as a cutoff line becomes nonlinear in relation to a change of a rotational position of the rotary light shielding member.

Abstract: A lighting apparatus to be installed on a mobile object includes: a heat dissipator having a first outer surface and a second outer surface different from the first outer surface; a first light-emitting device thermally coupled to the first outer surface of the heat dissipator; a second light-emitting device thermally coupled to the second outer surface of the heat dissipator; a reflector that reflects light emitted from the first light-emitting device; a first lens that is disposed in a path of light reflected by the reflector and that transmits the light from the reflector along a predetermined lighting direction; and a second lens disposed in a path of light from the second light-emitting device.

Abstract: A lighting device may be provided that comprises: a cover; a member comprising a first placement portion, a second placement portion and a guide disposed between the first placement portion and the second placement portion; a light source module disposed on the first placement portion; a heat sink comprising a first receiver and a second receiver, the first receiver being defined by a flat surface and a plurality of heat radiating fins extending from an edge portion of the flat surface; and a circuitry disposed in the second receiver; wherein the second placement portion is disposed in the first receiver, wherein a first portion of the guide is couple to the cover and a second portion of the guide is couple to the heat radiating fins of the heat sink, and wherein the guide is spaced apart from the flat surface, the guide contacts the heat radiating fins, and the guide is disposed on the heat radiating fins.

Abstract: An optical module includes a transmitting member. The transmitting member is fixed to a cap member so as to cover a through-hole. On the assumption that the height of one point on a first surface in a state in which the transmitting member is detached from the cap member is zero and the direction toward the outside of the optical module is a positive direction, the amount of warp that is a difference between the displacement at the central point and the displacement at a standard point, on the first surface, corresponding to a reference point, on the projection image, away from a center of gravity by a particular distance is different between a first geodesic line and a second geodesic line, the displacement being a height of the one point in a direction of the optical axis in a state in which the transmitting member is fixed to the cap member. The transmitting member is joined to the cap member at the first surface or the second surface.

Abstract: A lens member includes a light-incident side; a light-exit side that is opposite to the light-incident side, a Fresnel lens arranged on a center axis that passes through a center of the light-incident side, and a diffraction grating structure arranged around a periphery of the Fresnel lens and having a center through which the center axis passes. Also, it is disclosed that the Fresnel lens may include a first Fresnel lens and a second Fresnel lens, the first Fresnel lens includes annular prisms that are divided from a convex lens and having a center through which the center axis of the light-incident side passes, and the second Fresnel lens includes annular prisms that are divided from a TIR lens and arranged around the periphery of the first Fresnel lens, centering around the center axis of the light-incident side.