Abstract: An optical member includes a substrate and an antireflection film on the substrate. The antireflection film includes a porous layer at the surface thereof. The porous layer contains silicon oxide particles and a binder. The porous layer is provided with a fluororesin on at least part of the surface of the porous layer. The contact angle of n-hexadecane on the surface of the antireflection film is in the range of 50° to 80°.

Abstract: A precursor sol of aluminum oxide contains a polycondensate formed by the hydrolysis of an aluminum alkoxide or an aluminum salt, a solvent, and an organic aluminum compound having a specific structure. An optical member is produced by a process including a step of immersing an aluminum oxide film in a hot water with a temperature of 60° C. to 100° C. to form a textured structure made of aluminum oxide crystals, the aluminum oxide film being formed by feeding the precursor sol of aluminum oxide onto a base. A method for producing an optical member includes a step of immersing an aluminum oxide film in a hot water with a temperature of 60° C. to 100° C. to form a textured structure made of aluminum oxide crystals, the aluminum oxide film being formed by feeding the precursor sol of aluminum oxide onto a base.

Abstract: Provided are a member that reduces a change in refractive index at high humidity (60% RH or more and less than 90% RH) and a method of manufacturing the member. The member comprises a base material and a porous layer formed on at least any one of surfaces of the base material, wherein the porous layer has dN2 of 5 nm or more and 20 nm or less and dH2O of 25 nm or more and 75 nm or less, and has a contact angle with respect to water of less than 60°, in which dN2 is defined as a diameter of a pore at a time when a differential pore volume becomes maximum in the differential pore distribution in nitrogen adsorption and dH2O is defined as a diameter of a pore at a time when a differential pore volume becomes maximum in the differential pore distribution in water vapor adsorption.

Abstract: An optical member including a base material and an antireflection film on the base material, wherein the antireflection film has a porous layer as the surface, the porous layer contains silicon oxide particles and a binder, the porous layer has a refractive index of 1.19 or more and 1.30 or less, and the surfaces of the silicon oxide particles and the binder have alkylsilyl groups.

Abstract: A cemented lens includes a first optical element, a second optical element, a third optical element sandwiched between the first optical element and the second optical element and containing resin, a light shielding layer covering a surface of the third optical element that is in contact with neither the first optical element nor the second optical element, and a porous layer covering at least a part of the light shielding layer.

Abstract: An imaging apparatus includes: an imager that performs imaging of a subject through an imaging optical system including a focus lens capable of changing a position of a principal point in a range between a first position and a second position in a direction of an optical axis; and an imaging controller that continuously performs plural imaging control operations for causing the imager to perform imaging of the subject through the imaging optical system in a state where the principal point of the focus lens is set at each of plural imaging positions which are set in a movement range as at least a partial range of the range, and the imaging controller makes distances between the plural imaging positions narrower and sets a larger number of the plural imaging positions in an imaging control operation performed later in time series among the plural imaging control operations.

Abstract: A waterproof connector (A) includes a housing (10), a sealing member (30) including a ring-shaped seal functioning portion (31) to be fit externally on the housing (10) and sandwiched portions (36L, 36S) projecting along an outer peripheral surface of the housing (10) from the seal functioning portion (31), and a holding member 40 for resiliently sandwiching the sandwiched portions (36L, 36S) between the outer peripheral surface of the housing (10) and the holding member (40) by being mounted on the housing (10). Since the sandwiched portions (36L, 36S) of the sealing member (30) are resiliently squeezed and sandwiched between the outer periphery of the housing (10) and the holding member (40), there is no possibility that the sealing member (30) is positionally deviated from the housing (10) in a circumferential direction.

Abstract: The optical member according to the present invention includes a film containing a plurality of chain particles and having a refractive index of 1.21 or more and 1.27 or less at a wavelength of 550 nm on a substrate. The film includes an alcohol having an ether bond or an ester bond and having a branched structure having 4 to 7 carbon atoms in a range of 1.0 mg/cm3 or more and 2.8 mg/cm3 or less.

Abstract: An optical member includes a base material and a film on the base material, the film includes hollow particles that have prickle-like protrusions on their surface, the heights of the protrusions are 3 nm or more and 20 nm or less, the proportion of the prickle-like protrusions is 3% or more and 30% or less of the particle surface, and the film includes 50 percent by volume or more and 68 percent by volume or less of hollow particles. Consequently, an antireflection film having a low refractive index and a low level of scattering in combination is provided.

Abstract: A waterproof connector (A) includes a housing (10), a sealing member (30) including a ring-shaped seal functioning portion (31) to be fit externally on the housing (10) and sandwiched portions (36L, 36S) projecting along an outer peripheral surface of the housing (10) from the seal functioning portion (31), and a holding member 40 for resiliently sandwiching the sandwiched portions (36L, 36S) between the outer peripheral surface of the housing (10) and the holding member (40) by being mounted on the housing (10). Since the sandwiched portions (36L, 36S) of the sealing member (30) are resiliently squeezed and sandwiched between the outer periphery of the housing (10) and the holding member (40), there is no possibility that the sealing member (30) is positionally deviated from the housing (10) in a circumferential direction.

Abstract: A board connector (10) includes a housing (20), fixing members (50) and a shield member (70). The housing (20) holds a terminal fitting (40). The fixing member (50) includes a housing fixing portion (51) to be fixed to the housing (20) and a board fixing portion (52) to be fixed to a circuit board (90) while being electrically connected to the circuit board (90). The shield member (70) includes mounting portions (75) to be mounted on the housing (75) and covering portions (77) for covering outer side surfaces of the fixing members (50) in a mounting direction of the mounting portions (75), and the covering portions (77) include contact portions (81) configured to come into contact with the outer side surfaces of the fixing members (50).

Abstract: A terminal-equipped wire configured by crimping a pair of barrel pieces provided on a terminal to an external sheath of a wire, the external sheath being provided on an outer circumferential surface of a core wire. The pair of barrel pieces are wrapped around the external sheath into a polygonal tube shape that has a plurality of corner portions in a circumferential direction of the external sheath, leading end edges of the pair of barrel pieces are arranged on opposite sides of at least one corner portion out of the plurality of corner portions.

Abstract: A method for manufacturing an optical member includes a step of applying a dispersion liquid containing particles and a dispersion medium on a substrate, a step of applying a solution containing a component to form a binder after the step of applying the dispersion liquid, and causing the solution to permeate a portion between the particles contained in the dispersion liquid applied in advance to form a single layer in which the portion between the particles is filled with the binder, and a step of drying the layer to prepare an antireflection film. The solution contains a silane-alkoxy condensate having an average particle diameter of 8 nm or more and 60 nm or less, and the solution contains a solvent having solubility of water of 10% by weight or less in an amount of 70% by mass or more.

Abstract: A terminal-equipped wire configured by crimping a pair of barrel pieces provided on a terminal to an external sheath of a wire, the external sheath being provided on an outer circumferential surface of a core wire. The pair of barrel pieces are wrapped around the external sheath into a polygonal tube shape that has a plurality of corner portions in a circumferential direction of the external sheath, leading end edges of the pair of barrel pieces are arranged on opposite sides of at least one corner portion out of the plurality of corner portions.

Abstract: A light detecting module that detects interference light that has exited an exit end surface of an optical fiber in an OCT instrument includes: a ball lens including an incident surface entered by the interference light that has exited the exit end surface, and an exit surface exited by the interference light that has entered the incident surface; and a photodiode including a detecting surface entered by the interference light that has exited the exit surface. The interference light obliquely enters the incident surface with respect to a perpendicular line at an incident position of the interference light. The interference light obliquely exits the exit surface with respect to a perpendicular line at an exit position of the interference light. The interference light obliquely enters the detecting surface with respect to a perpendicular line at an incident position of the interference light.

Abstract: The optical member according to the present invention includes a film containing a plurality of chain particles and having a refractive index of 1.21 or more and 1.27 or less at a wavelength of 550 nm on a substrate. The film includes an alcohol having an ether bond or an ester bond and having a branched structure having 4 to 7 carbon atoms in a range of 1.0 mg/cm3 or more and 2.8 mg/cm3 or less.

Abstract: There is provided an optical member including a porous layer on a substrate, wherein the porous layer contains silicon oxide particles, a silicon oxide binder, and a fluorine compound having a fluorocarbon group and a nonionic hydrophilic group, and the amount of the fluorine compound is 0.1% by mass or more and 2.5% by mass or less with respect to the silicon oxide.

Abstract: An optical member includes a base material and an antireflective layer on the base material wherein the antireflective layer includes a plurality of fine protrusions on a surface thereof and a support layer for supporting the protrusions, and the support layer contains boron in an amount of 7×1019 atoms/cm3 or more and 2.5×1020 atoms/cm3 or less.

Abstract: An optical member includes a base material and an antireflective layer on the base material wherein the antireflective layer includes a plurality of fine protrusions on a surface thereof and a support layer for supporting the protrusions, and the support layer contains boron in an amount of 7×1019 atoms/cm3 or more and 2.5×1020 atoms/cm3 or less.

Abstract: A board connector (10) includes a housing (20), fixing members (50) and a shield member (70). The housing (20) holds a terminal fitting (40). The fixing member (50) includes a housing fixing portion (51) to be fixed to the housing (20) and a board fixing portion (52) to be fixed to a circuit board (90) while being electrically connected to the circuit board (90). The shield member (70) includes mounting portions (75) to be mounted on the housing (75) and covering portions (77) for covering outer side surfaces of the fixing members (50) in a mounting direction of the mounting portions (75), and the covering portions (77) include contact portions (81) configured to come into contact with the outer side surfaces of the fixing members (50).