Abstract: A lens array includes a plurality of lenses having respective optical axes that are approximately parallel to each other, wherein the plurality of lenses are configured in a direction approximately perpendicular to the optical axes and are formed integrally with each other, and a maximum inclination angle of a lens surface on each of a predetermined number of the plurality of lenses is less than or equal 50.8 degrees or less, the maximum inclination angle being defined as a maximum value of an angle formed by an optical axis and a normal line of a lens surface of one of the predetermined number of the plurality of lenses.

Abstract: A lens plate includes at least one lens row including a plurality of lenses aligned in a first direction, each lens including a lens surface that includes perimeter portions extending in a second direction substantially perpendicular to the first direction such that two adjacent lenses are contiguous with each other at the perimeter portions.

Abstract: A lens array includes a plurality of lens assembly members with a plurality of lenses, a light blocking member with a plurality of apertures arranged therein, and a light blocking member including a plurality of apertures arranged therein. The lens assembly members are arranged so that an optical axis of each of the lenses of one of the lens assembly members is aligned with an optical axis of each of the lenses of another of the lens assembly members. Further, the lens assembly members and the light blocking member are arranged so that the following relationship is satisfied: P 2 ? RY ? LO - F F where P is a pitch of the lenses, F is a focal length of each of the lenses, LO is a distance between an object surface and each of the lenses, and RA is a distance between the optical axis and an inner surface of the aperture.

Abstract: The backlight apparatus allows brightness control with minimum image quality deterioration. This apparatus has: an illuminating section that radiates illumination light on a back of a liquid crystal panel comprising a plurality of image display areas; and a brightness determining section that determines a light emission brightness value of the illuminating section and renews a light emitting state of the illuminating section, based on the determined light emission brightness value. The illuminating section has light emitting areas illuminating each of a plurality of image display areas. The brightness determining section determines light emission brightness values of the image display areas, from values acquired by applying weights to the information based on input image signals of the image display areas, and changes the weights for the information based on luminance of ambient light surrounding the backlight apparatus.

Abstract: A lens array includes a plurality of lenses having respective optical axes that are approximately parallel to each other, wherein the plurality of lenses are configured in a direction approximately perpendicular to the optical axes and are formed integrally with each other, and a maximum inclination angle of a lens surface on each of a predetermined number of the plurality of lenses is less than or equal 50.8 degrees or less, the maximum inclination angle being defined as a maximum value of an angle formed by an optical axis and a normal line of a lens surface of one of the predetermined number of the plurality of lenses.

Abstract: Provided is a backlight device wherein when the drive duty and the drive current are controlled according to a motion, the image quality is improved by preventing flicker caused by the change of the drive waveform. A light-emitting unit (121) comprises a plurality of light-emitting areas. A motion amount detecting unit (131) detects the motion amount of an image in each of a plurality of motion areas each corresponding to at least one or more light-emitting areas. A drive condition specifying unit specifies a drive condition including the duty and pulse height value of a drive pulse for causing each of the plurality of light-emitting areas to emit light, on the basis of the detected motion amount. A drive unit drives each of the plurality of light-emitting areas according to the specified drive condition. The drive condition specifying unit adjusts the drive condition such that the drive condition temporally smoothly changes.

Abstract: Provided is a backlight device, wherein when both the drive duty and the drive current are controlled in each of separated areas, the image quality is improved by preventing the change of luminance even when there is a difference between the adjustment resolutions of both the drive duty and the drive current. A light-emitting unit (121) comprises a plurality of light-emitting areas. A motion amount detecting unit (131) detects the motion amount of an image in each of a plurality of motion areas each corresponding to at least one or more light-emitting areas. A drive condition specifying unit specifies a drive condition including the duty and pulse height value of a drive pulse for causing each of the plurality of light-emitting areas to emit light, on the basis of the detected motion amount. A drive unit drives each of the plurality of light-emitting areas according to the specified drive condition.

Abstract: A light emitting element drive apparatus that drives light emitting elements reduces power loss caused by variability between forward voltage drops of the light emitting elements. A plurality of voltage applying sections (1, 32 and 33; and 2, 34 and 35) generate application voltages based on a detection voltage determined based on a maximum forward voltage drop among the forward voltage drops of the light emitting element arrays (11 to 14), and apply the generated application voltages to the light emitting elements (11 to 14). Switching sections (30 and 31) switch between a plurality of voltage applying sections (1, 32 and 33; and 2, 34 and 35) to which the light emitting element arrays (11 to 14) individually connect. Controlling sections (40 to 42) control the switching sections (30 and 31) to switch connection to minimize the difference between forward voltage drops of light emitting element arrays (11 to 14).

Abstract: Disclosed is a backlight device that reduces elevated black levels and the visibility of flickering when displaying a video. A light-emitting unit (121) is provided with a plurality of light-emitting areas that individually emit illumination light, and illuminates a liquid crystal panel (110) with the illumination light from the plurality of light-emitting areas. A motion detection unit (150) detects image motion from an image signal. A brightness control unit (130) acquires a brightness determination reference value for each light-emitting area on the basis of the image signal, and in regards to each of the plurality of light-emitting areas, weights the acquired brightness determination reference value for each of the one or more light-emitting areas that constitute a weighting region and determines the light emission brightness value for each of the light-emitting areas on the basis of the weighting results.

Abstract: A developing apparatus includes a developing roller, a first shaft, a second shaft, a belt, and a power supply. The developing roller is in contact with an image forming body. The first shaft is driven in rotation by an external drive source. The belt is entrained about the first and second shafts, and is partially at first and second portions in a wrapping contact with the developing roller. The power supply applies voltages to the first and second shafts such that a voltage drop appears in the belt in a direction of travel of the belt. The power supply applies a voltage to the developing roller such that a first electric field is developed across the developing roller and the first portion, and such that a second electric field in the opposite direction to the first electric field is developed across the developing roller and the second portion.

Abstract: A lens array includes a lens assembly member and a light blocking member. The lens assembly member includes lens elements arranged in an arrangement direction substantially perpendicular to optical axes thereof. The light blocking member includes apertures extending and passing thought the optical axes. The lens assembly members and the light blocking member are arranged so that the following relationship is satisfied: RAY/RLY<RAX/RLX where RLY is a radius of the lens elements in a direction parallel to the arrangement direction, RLX is a radius of the lens elements in a direction perpendicular to the arrangement direction, RAX is a radius of the aperture in a direction perpendicular to the arrangement direction, and RAY is a distance from a center of a circle with the radius RAX to an end portion of the aperture in a direction in parallel to the arrangement direction.

Abstract: A lens array forms an erect image of an object. The lens array includes at least one row of lens elements and at least one rib. The lens elements are aligned in a first direction perpendicular to optical axes of the lens elements having an incidence surface and an exit surface. The rib is formed on the lens array and extending in a second direction parallel to the first direction and in a third direction parallel to the optical axes further than the incidence surface and the exit surface. A lens unit includes a shielding member and the lens array assembled to the shielding member. The shielding member includes diaphragms formed therein and aligned in a first direction, and a first engagement portion. The lens array includes a second engagement portion for engaging the first engagement portion to correct deformation of the lens array.

Abstract: Lens pairs include: a first lens to form an intermediate image, which is an inverted image of an object, on an intermediate image plane; and a second lens to form an image of the object, which is an inverted image of the intermediate image, on the image plane. A ratio of SO1 (the distance between the first principal plane of the first lens and the object plane) to SI1 (the distance between the second principal plane of the first lens and the intermediate image plane) is substantially the same as the ratio of SI2 (the distance between the second principal plane of the second lens and the imaging plane) to SO2 (the distance between the first principal plane of the second lens and the intermediate image plane). The distance between the first lens and the object plane is different from a distance between the second lens and the imaging plane.

Abstract: A lens array includes a plurality of lens assembly members with a plurality of lenses, a light blocking member with a plurality of apertures arranged therein, and a light blocking member including a plurality of apertures arranged therein. The lens assembly members are arranged so that an optical axis of each of the lenses of one of the lens assembly members is aligned with an optical axis of each of the lenses of another of the lens assembly members. Further, the lens assembly members and the light blocking member are arranged so that the following relationship is satisfied: P 2 ? RY ? LO - F F where P is a pitch of the lenses, F is a focal length of each of the lenses, LO is a distance between an object surface and each of the lenses, and RA is a distance between the optical axis and an inner surface of the aperture.

Abstract: A lens array includes a plurality of lens units each of which includes a plurality of microlenses linearly arranged, and a light shielding member having a plurality of openings as apertures. The openings are disposed so as to face the microlenses of respective lens units. Facing microlenses of the lens units have optical axes substantially aligned with each other and passing the openings of the light shielding member. Light absorbing portions are provided in the openings.

Abstract: A neutralization device includes a light emitter, an optical conductor and multiple diffusion portions. The light emitter emits light for neutralizing an object. The optical conductor, which is opposed to the object and extends in a longitudinal direction, directs and applies the light to the object. The diffusion portions are arranged on the optical conductor in a zig-zag manner from one end of the optical conductor to the other and diffuse the light.

Abstract: Lens pairs include: a first lens to form an intermediate image, which is an inverted image of an object, on an intermediate image plane; and a second lens to form an image of the object, which is an inverted image of the intermediate image, on the image plane. A ratio of SO1 (the distance between the first principal plane of the first lens and the object plane) to SI1 (the distance between the second principal plane of the first lens and the intermediate image plane) is substantially the same as the ratio of SI2 (the distance between the second principal plane of the second lens and the imaging plane) to SO2 (the distance between the first principal plane of the second lens and the intermediate image plane). The distance between the first lens and the object plane is different from a distance between the second lens and the imaging plane.

Abstract: A lens array includes a plurality of lens assembly members with a plurality of lenses and a light blocking member with a plurality of apertures arranged therein. The lens assembly members are arranged so that an optical axis of each of the lenses of one of the lens assembly members is aligned with an optical axis of each of the lenses of another of the lens assembly members. Further, the lens assembly members and the light blocking member are arranged so that the following relationship is satisfied: ( PX 2 ) 2 + ( PY 4 ) 2 ? RA ? LO - F F where PY is a pitch of the lenses in one row, PX is a pitch of the rows, F is a focal length of each of the lenses, LO is a distance between each of the lenses and an object surface thereof, and RA is a distance between the optical axis and an inner surface of the aperture.

Abstract: An exposure device is provided that has a light emitting unit having a plurality of light emitting elements and a lens array having a pair of lenses having a first lens and a second lens, the lens array having a shielding unit for shielding a light from any one of the pair of lenses, wherein a formula EC<EP/2 is satisfied, where EP denotes an interval between two adjacent light emitting elements of the plurality of light emitting elements and where EC denotes an off-set between a central axis of the first lens and a central axis of the second lens.

Abstract: A lens unit includes a lens array, a first light blocking member, and a second light blocking member. The lens array includes a plurality of lens pairs arranged in a substantially linear arrangement. Each of the lens pairs includes a first lens for forming an inverted reduced-size image of an object and a second lens for forming an inverted enlarged-size image of the inverted reduced-size image. The first light blocking member is disposed between the first lenses and the second lenses, and includes first apertures. The second light blocking member includes second apertures arranged in a substantially linear arrangement corresponding to an arrangement interval of the lens pairs, and having different opening portion shapes depending on a position of the lens pairs in an optical axis direction of the lens pairs. The second light blocking member is disposed at least between the first lenses and an object plane or the second lenses and an image plane.