Abstract: An imaging device is attached to a moving body and includes a plurality of lens barrels that accommodates optical systems; a holder that covers and fixes the plurality of lens barrels and includes a tip end which light from an object enters and a base end on an opposite side of the tip end; a flange portion protruding from an outer periphery of the base end and fixed to the moving body; an image sensor that forms an image of light transmitted through an optical system; and a sensor board on which the image sensor is mounted. The image sensor is fixed to a base end of the holder.

Abstract: A zoom optical system comprises, in order from an object side: a first lens group having positive refractive power; a front-side lens group; an intermediate lens group having positive refractive power; and a rear-side lens group. The front-side lens group is composed of one or more lens groups and has a negative lens group. At least part of the intermediate lens group is a focusing lens group. The rear-side lens group is composed of one or more lens groups. Upon zooming, the first lens group is moved with respect to an image surface and distances between the first lens group and the front-side lens group, between the front-side lens group and the intermediate lens group, and between the intermediate lens group and the rear-side lens group change. The following conditional expressions are satisfied: ?0.750<fF/fRF<4.000 2.250<TLW/ZD1<5.000 32.

Abstract: A zoom optical system comprises, in order from an object side: a first lens group having positive refractive power; a front-side lens group; an intermediate lens group having positive refractive power; and a rear-side lens group. The front-side lens group is composed of one or more lens groups and has a negative lens group. At least part of the intermediate lens group is a focusing lens group. The rear-side lens group is composed of one or more lens groups. Upon zooming, distances between the first lens group and the front-side lens group, between the front-side lens group and the intermediate lens group, and between the intermediate lens group and the rear-side lens group change. The following conditional expressions are satisfied: ?10.000<fF/fRF<10.000 0.010<|fF/fXR|<10.

Abstract: A calculation device calculating an amount of movement in an optical axis direction of a focusing lens which adjusts a focal position of an imaging optical system includes: a first input unit to which first information about a deviation between an imaging surface which captures an image by the imaging optical system and the focal position is repeatedly input; a second input unit to which second information about a shake of the imaging optical system in the optical axis direction is repeatedly input at intervals shorter than those of the first information; and a calculation unit which calculates the amount of movement on the basis of at least one of the first information and the second information, wherein the calculation unit calculates the amount of movement on the basis of the second information between an input of the first information and an input of the next first information.

Abstract: A zoom optical system comprises, in order from an object side: a first lens group having positive refractive power; a front-side lens group; an intermediate lens group having positive refractive power; and a rear-side lens group. The front-side lens group is composed of one or more lens groups and has a negative lens group. At least part of the intermediate lens group is a focusing lens group. The rear-side lens group is composed of one or more lens groups. Upon zooming, distances between the first lens group and the front-side lens group, between the front-side lens group and the intermediate lens group, and between the intermediate lens group and the rear-side lens group change. The following conditional expressions are satisfied: ?10.000<fF/fRF<10.000 0.010<|fF/fXR|<10.

Abstract: A variable power optical system used for an optical apparatus, such as a camera, includes, in order from an object: a first lens group having positive refractive power; a second lens group having negative refractive power; a third lens group having positive refractive power; and a fourth lens group having positive or negative refractive power. The distances between lens groups change upon zooming from a wide-angle end state to a telephoto end state. The third lens group comprises, in order from the object, a first positive lens, a second positive lens, a first negative lens, a second negative lens and a third positive lens. The third lens group includes a vibration-isolating lens group which can move so as to have a movement component in a direction orthogonal to the optical axis upon correcting camera shake.

Abstract: A calculation device calculating an amount of movement in an optical axis direction of a focusing lens which adjusts a focal position of an imaging optical system includes: a first input unit to which first information about a deviation between an imaging surface which captures an image by the imaging optical system and the focal position is repeatedly input; a second input unit to which second information about a shake of the imaging optical system in the optical axis direction is repeatedly input at intervals shorter than those of the first information; and a calculation unit which calculates the amount of movement on the basis of at least one of the first information and the second information, wherein the calculation unit calculates the amount of movement on the basis of the second information between an input of the first information and an input of the next first information.

Abstract: A variable power optical system (ZL) used for an optical apparatus, such as a camera (1), includes, in order from an object: a first lens group (G1) having positive refractive power; a second lens group (G2) having negative refractive power; a third lens group (G3) having positive refractive power; and a fourth lens group (G4) having positive refractive power. The distance between the respective lens groups changes upon zooming from the wide-angle end state to the telephoto end state. The third lens group (G3) includes: an intermediate group (G3b) constituted by a positive lens, a negative lens, a negative lens, and a positive lens; and an image side group (G3c) having negative refractive power and disposed to an image side of the intermediate group (G3b). Upon focusing, the position of the intermediate group (G3b) with respect to the image plane is fixed and the image side group (G3c) moves along the optical axis.

Abstract: A zoom optical system comprises, in order from an object side: a first lens group having positive refractive power; a front-side lens group; an intermediate lens group having positive refractive power; and a rear-side lens group. The front-side lens group is composed of one or more lens groups and has a negative lens group. At least part of the intermediate lens group is a focusing lens group. The rear-side lens group is composed of one or more lens groups. Upon zooming, distances between the first lens group and the front-side lens group, between the front-side lens group and the intermediate lens group, and between the intermediate lens group and the rear-side lens group change. At least one of the following conditional expressions is satisfied: 0.010<fF/fXR<10.000 2.250<TLW/ZD1<10.

Abstract: Provided is a variable magnification optical system comprising, in order from an object side along an optical axis, a first lens group G1 having positive refractive power, a second lens group G2 having negative refractive power, a third lens group G3 having positive refractive power, and a fourth lens group G4; upon zooming from a wide angle end state to a telephoto end state, a distance between the first lens group G1 and the second lens group G2 being varied, a distance between the second lens group G2 and the third lens group G3 being varied, and a distance between the third lens group and the fourth lens group being varied; the third lens group G3 comprising, in order from the object side along the optical axis, a 3a-th lens group G3a having positive refractive power, an aperture S, and a 3b-th lens group G3b having positive refractive power; a lens group having negative refractive power within the 3b-th lens group G3b being used as a vibration reduction lens group and moved so as to include a component i

Abstract: A liquid crystal display device includes a liquid crystal panel having a reflection layer on a back surface opposite to a display surface of the liquid crystal panel, a light-guiding plate being closely fixed to the display surface and configured to diffusely reflect light incident and emit the light toward the display surface, a light source holding plate having a light source fixing plate on which a light source is mounted, and a back-side frame that includes a back-side portion disposed in parallel with the back surface of the liquid crystal panel and supported by the light source holding plate. A pair of positioning bent portions that are bent perpendicularly from the back-side portion and support the one end surface are formed on both sides at a lower end edge of the back-side portion along the one end surface.

Abstract: A liquid crystal display apparatus includes a quadrangular liquid crystal panel, a light guiding plate formed in a quadrangular shape substantially the same as that of the liquid crystal panel and having a pair of convex portions that protrude outward from a pair of end surfaces, and a frame having a light source holding plate in which a light source is mounted on a light source fixing plate, the light source fixing plate facing the one end surface, the back-side portion being formed in a quadrangular shape substantially the same as that of the liquid crystal panel. Bent side plate portions, which face the pair of end surfaces, are respectively provided on a pair of side portions of the back-side portion. Notches, into which the convex portions are fitted, are provided in the pair of bent side plate portions.

Abstract: A liquid crystal display apparatus includes a quadrangular liquid crystal panel having a reflection layer on a back surface opposite to a display surface, a light guiding plate that diffusely reflects light incident from one end surface of the light guiding plate toward the display surface, a back-side frame disposed in parallel with the liquid crystal panel on a side opposite to the light guiding plate, and a light source holding plate including a light source fixing plate that faces the one end surface and a fixing plate portion fixed to a surface of the back-side frame on a side opposite to the liquid crystal panel. A light source is mounted on the light source fixing plate, and the fixing plate portion is formed so as to be bent perpendicularly to the light source fixing plate.

Abstract: A zoom optical system comprises, in order from an object side: a first lens group having positive refractive power; a front-side lens group; an intermediate lens group having positive refractive power; and a rear-side lens group. The front-side lens group is composed of one or more lens groups and has a negative lens group. At least part of the intermediate lens group is a focusing lens group. The rear-side lens group is composed of one or more lens groups. Upon zooming, distances between the first lens group and the front-side lens group, between the front-side lens group and the intermediate lens group, and between the intermediate lens group and the rear-side lens group change. At least one of the following conditional expressions is satisfied: 0.010<fF/fXR<10.000 2.250<TLW/ZD1<10.

Abstract: A liquid crystal display device includes a liquid crystal panel having a reflection layer on a back surface opposite to a display surface of the liquid crystal panel, a light-guiding plate being closely fixed to the display surface and configured to diffusely reflect light incident and emit the light toward the display surface, a light source holding plate having a light source fixing plate on which a light source is mounted, and a back-side frame that includes a back-side portion disposed in parallel with the back surface of the liquid crystal panel and supported by the light source holding plate. A pair of positioning bent portions that are bent perpendicularly from the back-side portion and support the one end surface are formed on both sides at a lower end edge of the back-side portion along the one end surface.

Abstract: A liquid crystal display apparatus includes a quadrangular liquid crystal panel, a light guiding plate formed in a quadrangular shape substantially the same as that of the liquid crystal panel and having a pair of convex portions that protrude outward from a pair of end surfaces, and a frame having a light source holding plate in which a light source is mounted on a light source fixing plate, the light source fixing plate facing the one end surface, the back-side portion being formed in a quadrangular shape substantially the same as that of the liquid crystal panel. Bent side plate portions, which face the pair of end surfaces, are respectively provided on a pair of side portions of the back-side portion. Notches, into which the convex portions are fitted, are provided in the pair of bent side plate portions.

Abstract: A liquid crystal display apparatus includes a quadrangular liquid crystal panel having a reflection layer on a back surface opposite to a display surface, a light guiding plate that diffusely reflects light incident from one end surface of the light guiding plate toward the display surface, a back-side frame disposed in parallel with the liquid crystal panel on a side opposite to the light guiding plate, and a light source holding plate including a light source fixing plate that faces the one end surface and a fixing plate portion fixed to a surface of the back-side frame on a side opposite to the liquid crystal panel. A light source is mounted on the light source fixing plate, and the fixing plate portion is formed so as to be bent perpendicularly to the light source fixing plate.

Abstract: Provided is a variable magnification optical system comprising, in order from an object side along an optical axis, a first lens group G1 having positive refractive power, a second lens group G2 having negative refractive power, a third lens group G3 having positive refractive power, and a fourth lens group G4; upon zooming from a wide angle end state to a telephoto end state, a distance between the first lens group G1 and the second lens group G2 being varied, a distance between the second lens group G2 and the third lens group G3 being varied, and a distance between the third lens group and the fourth lens group being varied; the third lens group G3 comprising, in order from the object side along the optical axis, a 3a-th lens group G3a having positive refractive power, an aperture S, and a 3b-th lens group G3b having positive refractive power; a lens group having negative refractive power within the 3b-th lens group G3b being used as a vibration reduction lens group and moved so as to include a component i

Abstract: A resin-impregnated fiber bundle that can provide a molded article with a high surface impact strength is prepared by impregnating and integrating 100 parts by mass of a bundle of a fiber material (A) with 25 to 300 parts by mass of a thermoplastic resin (B). The fiber bundle has a flattened shape with a lateral cross-sectional shape having a major axis and a minor axis (length of the major axis>length of the minor axis). An average length (D1) of the major axis is 0.5 to 2.0 mm. An average flatness ratio (D1/D2), determined from the average length (D1) of the major axis and an average length (D2) of the minor axis, is 1.2 to 8.01. The fiber bundle has a length (L) of 11 to 50 mm, a ratio (L/D1) between L and D1 is 10 to 50, and a bulk density is 0.1 to 0.4 g/cm3.

Abstract: Provided is a variable magnification optical system comprising, in order from an object side along an optical axis, a first lens group G1 having positive refractive power, a second lens group G2 having negative refractive power, a third lens group G3 having positive refractive power, and a fourth lens group G4; upon zooming from a wide angle end state to a telephoto end state, a distance between the first lens group G1 and the second lens group G2 being varied, a distance between the second lens group G2 and the third lens group G3 being varied, and a distance between the third lens group and the fourth lens group being varied; the third lens group G3 comprising, in order from the object side along the optical axis, a 3a-th lens group G3a having positive refractive power, an aperture S, and a 3b-th lens group G3b having positive refractive power; a lens group having negative refractive power within the 3b-th lens group G3b being used as a vibration reduction lens group and moved so as to include a component i