Abstract: An encoder includes a scale and a sensor. The scale has first and second absolute patterns. The sensor includes a light source, and first and second absolute light receivers. The first and second absolute light receivers receive light from the first and second absolute patterns, respectively. The first absolute light receiver receives light from the first pattern and includes first and second light receiving elements. Each first light receiving elements outputs a first signal with a first phase. Each second light receiving elements outputs a first signal with a second phase. The first and second light receiving elements are arranged alternately. The second absolute light receiver includes third and fourth light receiving elements. Each third light receiving element outputs a second signal with the first phase. The third and fourth light receiving elements are arranged alternately. Each fourth light receiving element outputs a second signal with the second phase.

Abstract: A first vacuum motor includes a first pivoting shaft member, a bearing that rotatably supports the first pivoting shaft member, a disk disposed to be rotatable together with the first pivoting shaft member and having slits, a first bracket that is made of a non-magnetic material and supports the bearing, a recess formed in the first bracket to be dented in the axial direction, and a sensor unit disposed to face the disk in the axial direction via a thin wall formed by the recess. By the thin wall, the space where the sensor unit is disposed under the atmospheric pressure is isolated from the space where the disk is disposed under a reduced pressure lower than the atmospheric pressure.

Abstract: An encoder includes a scale and a sensor. The scale has first and second absolute patterns. The sensor includes a light source, and first and second absolute light receivers. The first and second absolute light receivers receive light from the first and second absolute patterns, respectively. The first absolute light receiver receives light from the first pattern and includes first and second light receiving elements. Each first light receiving elements outputs a first signal with a first phase. Each second light receiving elements outputs a first signal with a second phase. The first and second light receiving elements are arranged alternately. The second absolute light receiver includes third and fourth light receiving elements. Each third light receiving element outputs a second signal with the first phase. The third and fourth light receiving elements are arranged alternately. Each fourth light receiving element outputs a second signal with the second phase.

Abstract: An encoder includes a scale and a sensor. The scale has first and second absolute patterns. The sensor includes a light source, and first and second absolute light receivers. The first and second absolute light receivers receive light from the first and second absolute patterns, respectively. The first absolute light receiver receives light from the first pattern and includes first and second light receiving elements. Each first light receiving elements outputs a first signal with a first phase. Each second light receiving elements outputs a first signal with a second phase. The first and second light receiving elements are arranged alternately. The second absolute light receiver includes third and fourth light receiving elements. Each third light receiving element outputs a second signal with the first phase. The third and fourth light receiving elements are arranged alternately. Each fourth light receiving element outputs a second signal with the second phase.

Abstract: An encoder includes: an optical module that detects angular position information indicating an angular position of a rotating disk within one rotation thereof; a magnetic detecting unit that detects multi-rotation information indicating the number of rotations of the disk; a battery that supplies a power to the magnetic detecting unit when an external power is not supplied to the encoder; and a connector that connects connection terminals of the battery to a substrate to which at least one of the optical module and the magnetic detecting unit is connected, via solders in contact with the connection terminals.

Abstract: A first vacuum motor includes a first pivoting shaft member, a bearing that rotatably supports the first pivoting shaft member, a disk disposed to be rotatable together with the first pivoting shaft member and having slits, a first bracket that is made of a non-magnetic material and supports the bearing, a recess formed in the first bracket to be dented in the axial direction, and a sensor unit disposed to face the disk in the axial direction via a thin wall formed by the recess. By the thin wall, the space where the sensor unit is disposed under the atmospheric pressure is isolated from the space where the disk is disposed under a reduced pressure lower than the atmospheric pressure.

Abstract: A backlight unit includes LEDs, a light guide plate, a wavelength converter, and an LED controller. The LEDs include end-side LEDs arranged at ends in the direction of arrangement and a center LED arranged at the center in the direction of arrangement. The light guide plate includes a light entering end surface and a light exiting plate surface. The light entering end surface extends along the direction of arrangement. The wavelength converter extends along the direction of arrangement and is interposed among the LEDs and the light entering end surface. The wavelength converter includes a phosphor configured to wavelength-convert the light from the LEDs. The LED controller is configured to control the amount of light emitted by each LED per unit time such that the amount of light emitted by at least one of the end-side LEDs than the amount of light emitted by the center LED.

Abstract: An encoder includes a scale and a sensor. The scale has first and second absolute patterns. The sensor includes a light source, and first and second absolute light receivers. The first and second absolute light receivers receive light from the first and second absolute patterns, respectively. The first absolute light receiver receives light from the first pattern and includes first and second light receiving elements. Each first light receiving elements outputs a first signal with a first phase. Each second light receiving elements outputs a first signal with a second phase. The first and second light receiving elements are arranged alternately. The second absolute light receiver includes third and fourth light receiving elements. Each third light receiving element outputs a second signal with the first phase. The third and fourth light receiving elements are arranged alternately. Each fourth light receiving element outputs a second signal with the second phase.

Abstract: A backlight unit includes LEDs a light guide plate, and a wavelength converter. The light guide plate includes a light entering end surface and a light exiting plate surface. The light entering end surface is at least a section of an outer peripheral end surface of the light guide plate. The light exiting plate surface is a plate surface of the light guide plate. The wavelength converter is interposed among the LEDs and the light entering end surface to extend along the length direction of the light entering end surface. The wavelength converter includes phosphors configured to wavelength-convert light. The wavelength converter is configured such that at least any one of end portions in the length direction is formed as a great light emission portion configured to emit a greater amount of wavelength-converted light per unit length in the length direction than that of a center portion.

Abstract: A backlight unit includes LEDs, a light guide plate, a wavelength converter, and an LED controller. The LEDs include end-side LEDs arranged at ends in the direction of arrangement and a center LED arranged at the center in the direction of arrangement. The light guide plate includes a light entering end surface and a light exiting plate surface. The light entering end surface extends along the direction of arrangement. The wavelength converter extends along the direction of arrangement and is interposed among the LEDs and the light entering end surface. The wavelength converter includes a phosphor configured to wavelength-convert the light from the LEDs. The LED controller is configured to control the amount of light emitted by each LED per unit time such that the amount of light emitted by at least one of the end-side LEDs than the amount of light emitted by the center LED.

Abstract: A lighting device includes a light source array, a wavelength converting member, and a light guide plate. The light source array includes light sources configured to emit primary light rays. The wavelength converting member includes a wavelength converting portion, a holding portion, and non-wavelength converting portions. The wavelength converting portion contains phosphors configured to emit secondary light rays when excited by the primary light rays. The wavelength converting member is disposed between the light guide plate and the light source array. The light guide plate includes a light entering surface, a light exiting surface, an opposite surface that is on an opposite side from the light exiting surface, and a light reflecting and scattering pattern. The light reflecting and scattering pattern includes complementary color dots formed in sections of the opposite surface on non-wavelength converting portion sides. The complementary color dots absorb the primary light rays.

Abstract: A backlight unit 12 includes LEDs 17, a light guide plate 19 including a light entry end surface 19b, a light output plate surface 19a, and an opposite plate surface 19c, a wavelength conversion sheet 20, and a reflection sheet 25. The light guide plate 18 includes a parallel plate surface 27 on a central portion of the opposite plate surface 19c and parallel with the light output plate surface 19a, and an inclined plate surface 28 on a part of the outer peripheral side portion and being inclined with respect to the light output plate surface 19a to be closer to the light output plate surface 19a as is closer to the outer peripheral end surface. The wavelength conversion sheet 20 overlaps the light output plate surface 19a and contains a phosphor that wavelength-converts the light from the LEDs 17.

Abstract: A lighting device includes a light source line, a light guide plate, and a wavelength converting member. The light source line includes an inner light source and outer light sources. The inner light source is disposed in the middle and configured to emit primary light rays in a predefined wavelength range. The outer light sources are disposed outer than the inner light source and configured to emit primary light rays and complementary color light rays. The light guide plate includes a light entering surface and a light exiting surface. The wavelength converting member contains first phosphors configured to emit secondary light rays in a wavelength range different from the wavelength range when excited by the primary light rays. The wavelength converting member is disposed to cover the light exiting surface and configured to pass some of the primary light rays and to release planar light.

Abstract: A backlight unit (lighting device) 12 includes LEDs (light source) 17, a light guide plate 19 including a light entry end surface 19b on at least a part of an outer peripheral end surface and a light output plate surface 19a on a plate surface, and a wavelength conversion sheet (wavelength conversion member) 20 disposed so as to overlap the light output plate surface 19a of the light guide plate 19 and containing a phosphor for wavelength-converting the light from the LEDs 17. Light from the LED 17 enters through the light entry end surface 19b and exits through the light output plate surface 19a. The wavelength conversion sheet 20 includes an increased phosphor portion 27 on at least a part of outer peripheral side portions 20OP thereof and the increased phosphor portion 27 has a phosphor content per unit area that is greater than that in a central portion 20IP.

Abstract: A backlight unit includes LEDs a light guide plate, and a wavelength converter. The light guide plate includes a light entering end surface and a light exiting plate surface. The light entering end surface is at least a section of an outer peripheral end surface of the light guide plate. The light exiting plate surface is a plate surface of the light guide plate. The wavelength converter is interposed among the LEDs and the light entering end surface to extend along the length direction of the light entering end surface. The wavelength converter includes phosphors configured to wavelength-convert light. The wavelength converter is configured such that at least any one of end portions in the length direction is formed as a great light emission portion configured to emit a greater amount of wavelength-converted light per unit length in the length direction than that of a center portion.

Abstract: A lighting device includes a light source array, a wavelength converting member, and a light guide plate. The light source array includes light sources configured to emit primary light rays. The wavelength converting member includes a wavelength converting portion, a holding portion, and non-wavelength converting portions. The wavelength converting portion contains phosphors configured to emit secondary light rays when excited by the primary light rays. The wavelength converting member is disposed between the light guide plate and the light source array. The light guide plate includes a light entering surface, a light exiting surface, an opposite surface that is on an opposite side from the light exiting surface, and a light reflecting and scattering pattern. The light reflecting and scattering pattern includes complementary color dots formed in sections of the opposite surface on non-wavelength converting portion sides. The complementary color dots absorb the primary light rays.

Abstract: A backlight unit (lighting device) 12 includes LEDs (light source) 7, a light guide plate 9 including a light entry end surface 9b on at least a part of an outer peripheral end surface and a light output plate surface 9a on a plate surface, and a wavelength conversion sheet (wavelength conversion member) 20 disposed so as to overlap the light output plate surface 9a of the light guide plate 9 and containing a phosphor for wavelength-converting the light from the LEDs 7. Light from the LED 7 enters through the light entry end surface 9b and exits through the light output plate surface 9a. The wavelength conversion sheet 20 includes an increased phosphor portion 27 on at least a part of outer peripheral side portions 20OP thereof and the increased phosphor portion 27 has a phosphor content per unit area that is greater than that in a central portion 201P.

Abstract: A lighting device includes a light source, a light guide plate, a reflection member, a wavelength converting member, and a complementary color member. The light source is configured to emit primary light rays. The light guide plate includes a light entering surface, a light exiting surface, and an opposite surface disposed opposite from the light exiting surface. The reflection member covers the opposite surface. The wavelength converting member contains phosphors that emit secondary light rays in a wavelength range different from the wavelength range when excited by the primary light rays. The wavelength converting member is configured to pass some of the primary light rays and disposed to cover a space between the light source and a light entering end or cover the light entering end. The complementary color member exhibits a color that makes a complementary color pair with a reference color exhibited by the primary light rays.

Abstract: A backlight unit 12 includes LEDs 17, a light guide plate 19 including a light entry end surface 19b, a light output plate surface 19a, and an opposite plate surface 19c, a wavelength conversion sheet 20, and a reflection sheet 25. The light guide plate 18 includes a parallel plate surface 27 on a central portion of the opposite plate surface 19c and parallel with the light output plate surface 19a, and an inclined plate surface 28 on a part of the outer peripheral side portion and being inclined with respect to the light output plate surface 19a to be closer to the light output plate surface 19a as is closer to the outer peripheral end surface. The wavelength conversion sheet 20 overlaps the light output plate surface 19a and contains a phosphor that wavelength-converts the light from the LEDs 17.

Abstract: A lighting device includes a light source line, a light guide plate, and a wavelength converting member. The light source line includes an inner light source and outer light sources. The inner light source is disposed in the middle and configured to emit primary light rays in a predefined wavelength range. The outer light sources are disposed outer than the inner light source and configured to emit primary light rays and complementary color light rays. The light guide plate includes a light entering surface and a light exiting surface. The wavelength converting member contains first phosphors configured to emit secondary light rays in a wavelength range different from the wavelength range when excited by the primary light rays. The wavelength converting member is disposed to cover the light exiting surface and configured to pass some of the primary light rays and to release planar light.