Abstract: A display system includes: a display device; a reflection optical system; a housing; and a shield member. The reflection optical system includes at least a last reflective member on which light, emerging from a display screen of the display device, is incident either directly or indirectly. The shield member is held by the housing to assume either a shielding state or an unshielding state. The shielding state is a state where the shield member at least partially cuts off light incident on, or reflected from, the last reflective member. The unshielding state is a state where the shielding state is canceled. The shield member in the shielding state reflects, toward the viewer's eyes, external light impinging on the housing. The housing has a holding structure to hold the shield member, no matter whether the shield member assumes the shielding state or the unshielding state.

Abstract: A sample detection plate according to the present disclosure includes a first substrate having a first surface, and a sample container that is provided on the first surface of the first substrate to contain a sample that absorbs electromagnetic waves having a predetermined wavelength. The first substrate includes a first material that emits autofluorescence in response to the electromagnetic waves having the predetermined wavelength.

Abstract: A detection plate includes a track region having a bottom surface having a groove provided therein, and a well apart from the track region. The well has a bottom surface. The bottom surfaces of the track region and the well are disposed substantially on a plane. This detection plate detects a specimen rapidly and highly accurately with a simple structure.

Abstract: A sample detection plate according to the present disclosure includes a first substrate having a first surface, and a sample container that is provided on the first surface of the first substrate to contain a sample that absorbs electromagnetic waves having a predetermined wavelength. The first substrate includes a first material that emits autofluorescence in response to the electromagnetic waves having the predetermined wavelength.

Abstract: Disclosed is a sample holding carrier allowing samples to be measured accurately, and a fluorescence detection device for use with the sample holding carrier. A biosensor substrate includes a base substrate, a plurality of wells formed on a first surface side of the base substrate; and grooves formed on the first surface side of the base substrate separately from the wells and generating fluorescence under exposure to excitation light. The fluorescence detection device applies excitation light to the grooves, thereby figuring out the level of the fluorescence to be detected from the biosensor substrate. As a result, the fluorescence detection device can amplify the detection signals of the fluorescence generated when the excitation light is applied to the wells to an appropriate level, thereby accurately detecting the fluorescence generated in the samples.

Abstract: A biosensor substrate includes a base substrate to which an excitation light beam is entered, a track formed on the base substrate, and a plurality of wells disposed on the base substrate and accommodating a specimen. A region on which the wells are disposed is sectioned into a plurality of zones in a radial direction, and the wells are arranged on the zones in a circumferential direction. The biosensor substrate is driven at a constant angular velocity while a zone is scanned with the excitation light beam. Velocities set to the zones are varied between the zones, and a zone on the outer radial side has a smaller angular velocity.

Abstract: A sample holding carrier includes: a substrate to which irradiation light is entered from an under face; a first reflective film disposed on a top face side of the substrate and having electrical conductivity; a sample accommodating portion disposed on a top face side of the first reflective film and having a bottom portion; and a first current carrying part configured to apply a voltage to the first reflective film from an outside.

Abstract: A detection plate includes a track region having a bottom surface having a groove provided therein, and a well apart from the track region. The well has a bottom surface. The bottom surfaces of the track region and the well are disposed substantially on a plane. This detection plate detects a specimen rapidly and highly accurately with a simple structure.

Abstract: A biosensor substrate includes a base substrate to which an excitation light beam is entered, a track formed on the base substrate, and a plurality of wells disposed on the base substrate and accommodating a specimen. A region on which the wells are disposed is sectioned into a plurality of zones in a radial direction, and the wells are arranged on the zones in a circumferential direction. The biosensor substrate is driven at a constant angular velocity while a zone is scanned with the excitation light beam. Velocities set to the zones are varied between the zones, and a zone on the outer radial side has a smaller angular velocity.

Abstract: A sample holding carrier includes: a substrate to which irradiation light is entered from an under face; a first reflective film disposed on a top face side of the substrate and having electrical conductivity; a sample accommodating portion disposed on a top face side of the first reflective film and having a bottom portion; and a first current carrying part configured to apply a voltage to the first reflective film from an outside.

Abstract: The present invention provides a sample holding carrier that can accurately measure a sample with a simple configuration, and a fluorescence detection system and device that use the same. Biosensor substrate includes: base substrate on which excitation light is incident from a lower surface; reflecting film that is arranged on an upper surface of base substrate to partially reflect the excitation light; and plural wells that are arranged on an upper surface side of reflecting film and have bottom surface portions. The excitation light is converged to be incident on base substrate. Distance from reflecting surface that is of a boundary between reflecting film and base substrate to bottom surface portion of well is less than or equal to a focal depth of the excitation light. Therefore, the sample accommodated in bottom surface portion of well can surely and efficiently be irradiated with the excitation light, and accurately be measured.

Abstract: To provide a fluorescence detection device that can effectively remove autofluorescence using a simple configuration. A fluorescence detection device comprises: semiconductor laser for emitting excitation light; an objective lens for converging excitation light onto a sample on a biosensor substrate; an anamorphic lens which introduces astigmatism to fluorescence that is from the biosensor substrate and incident on the objective lens and that passed through the objective lens; a spectral element for separating the fluorescence into a plurality of light rays; and a fluorescence detector for receiving the light rays separated by the spectral element. On the light receiving surface of the fluorescence detector, the spectral element splits the fluorescence so that the fluorescence generated at the sample is separated from the fluorescence generated at a specific depth position other than the sample position.

Abstract: The present invention provides a sample holding carrier that can accurately measure a sample with a simple configuration, and a fluorescence detection system and device that use the same. Biosensor substrate includes: base substrate on which excitation light is incident from a lower surface; reflecting film that is arranged on an upper surface of base substrate to partially reflect the excitation light; and plural wells that are arranged on an upper surface side of reflecting film and have bottom surface portions. The excitation light is converged to be incident on base substrate. Distance from reflecting surface that is of a boundary between reflecting film and base substrate to bottom surface portion of well is less than or equal to a focal depth of the excitation light. Therefore, the sample accommodated in bottom surface portion of well can surely and efficiently be irradiated with the excitation light, and accurately be measured.

Abstract: Disclosed is a sample holding carrier allowing samples to be measured accurately, and a fluorescence detection device for use with the sample holding carrier. A biosensor substrate includes a base substrate, a plurality of wells formed on a first surface side of the base substrate; and grooves formed on the first surface side of the base substrate separately from the wells and generating fluorescence under exposure to excitation light. The fluorescence detection device applies excitation light to the grooves, thereby figuring out the level of the fluorescence to be detected from the biosensor substrate. As a result, the fluorescence detection device can amplify the detection signals of the fluorescence generated when the excitation light is applied to the wells to an appropriate level, thereby accurately detecting the fluorescence generated in the samples.

Abstract: To provide a fluorescence detection device that can effectively remove autofluorescence using a simple configuration. A fluorescence detection device comprises: semiconductor laser for emitting excitation light; an objective lens for converging excitation light onto a sample on a biosensor substrate; an anamorphic lens which introduces astigmatism to fluorescence that is from the biosensor substrate and incident on the objective lens and that passed through the objective lens; a spectral element for separating the fluorescence into a plurality of light rays; and a fluorescence detector for receiving the light rays separated by the spectral element. On the light receiving surface of the fluorescence detector, the spectral element splits the fluorescence so that the fluorescence generated at the sample is separated from the fluorescence generated at a specific depth position other than the sample position.

Abstract: An optical pickup device imparts different astigmatisms from each other to light fluxes in four light flux areas A through D formed around an optical axis of laser light, out of the laser light reflected on a disc. The optical pickup device also changes the propagating directions of the light fluxes in the light flux areas A through D to separate the light fluxes in the light flux areas A through D from each other. A signal light area where only signal light exists is defined on a detection surface of a photodetector. Sensing portions are arranged at a position corresponding to the signal light area. Accordingly, only the signal light is received by the sensing portions, thereby suppressing deterioration of a detection signal resulting from stray light.

Abstract: An optical pickup device includes an astigmatism element which imparts astigmatism to laser light reflected on a disc, a spectral element which changes propagating directions of four light fluxes obtained by dividing a light flux of the laser light reflected on the disc to disperse the four light fluxes from each other, and a photodetector having a sensor group which receives the four light fluxes. The optical pickup device is further provided with a memory which holds a correction value for suppressing a DC component in a tracking error signal resulting from a positional displacement of the spectral element. The tracking error signal is corrected by the correction value to thereby suppress the DC component.

Abstract: An optical pickup device is so configured as to change the propagating directions of light fluxes in four light flux areas defined in the periphery of an optical axis of laser light, out of the laser light reflected on a disc, to separate the four light fluxes one from the other. A signal light area where only signal light exists is defined on a detecting surface of a photodetector. Sensors for signal light is disposed at a position in the signal light area to be irradiated by the signal light, and a tracking error signal is generated based on a signal from the sensors. A direct-current component of the tracking error signal resulting from positional displacements of the sensors is cancelled by adjusting a gain of the signal from the sensor.

Abstract: An optical pickup device has an astigmatism element which imparts astigmatism to reflected light of laser light reflected on a recording layer, and a spectral element into which the reflected light is entered, and which separates the reflected light. The spectral element is divided into four third areas by a first area having a certain width and formed along a straight line in parallel to a first direction, and by a second area having a certain width and formed along a straight line in parallel to a second direction. The spectral element is configured to guide the reflected light passing through the four third areas to respective corresponding sensors on a photodetector while making propagating directions of the reflected light different from each other, and to avoid guiding the reflected light entered into the first area and into the second area to the sensors.

Abstract: An optical pickup device includes an objective lens portion which converges laser light at a first focal point and a second focal point; an actuator which positions the first focal point or the second focal point on a recording layer in a disc; an astigmatism element which sets a first focal line position and a second focal line position of the laser light reflected on the disc away from each other in a propagating direction of the laser light; a spectral element which disperses four light fluxes obtained by dividing the laser light reflected on the disc in four from each other; and a photodetector having a sensor group which receives the four light fluxes dispersed by the spectral element.