Abstract:
An optical-path-switching apparatus according to the present invention includes a reducing optical system capable of guiding signal light and control light along the direction of gravity into a thermal-lens-forming optical element having an incidence plane positioned to be perpendicular to the direction of gravity in such a way as to differentiate respective convergence points in a direction perpendicular to the optical axis. The apparatus further includes a light-receiving unit configured to converge or condense straight-traveling signal light in the absence of irradiation with the control light and signal light whose optical path has been switched due to irradiation with the control light using the same optical element. Further, the apparatus includes a wedge-type prism provided at a passing position of the optical-path-switched signal light to increase the distance between the optical axis of the optical-path-changed signal light and the optical axis of the straight-traveling signal light.
Abstract:
Ein integrierter optischer Phasenmodulator (110) für ein faseroptisches Interferometer weist ein Substrat (112) und einen optischen Wellenleiter (114) auf, der in das Substrat (112) integriert ist, wobei mindestens eine Außenfläche (116, 118, 120, 122, 124, 125) des Substrats (112) so verändert ist, dass Licht, das sich im Substrat (112) ausbreitet, in vermindertem Maß an der mindestens einen Außenfläche (116, 118, 120, 122, 124, 125) des Substrats (112) reflektiert wird im Vergleich zu an einer nicht veränderten Außenfläche des Substrats. Bei einem Verfahren zur Herstellung eines integrierten optischen Phasenmodulators (110) für ein faseroptisches Interferometer, der ein Substrat (112) aufweist, in das ein optischer Wellenleiter (114) integriert ist, wird mindestens eine Außenfläche (116,118, 120, 122, 124, 125) des Substrats (112) so verändert, dass Licht, das sich im Substrat (112) ausbreitet, in vermindertem Maß an der mindestens einen Außenfläche (116, 118, 120, 122, 124, 125) des Substrats (112) reflektiert wird im Vergleich zu an einer nicht veränderten Außenfläche des Substrats.
Abstract:
The invention relates to a backlight system for background illumination of displays or screens, comprising at least one light source with a glass envelope, the glass composition of the glass envelope being doped with one or more doped oxides which absorb IR radiation and/or the glass envelope has an outer coating which absorbs IR radiation and/or the backlight system has a coating on components other than the glass envelope, absorbing IR radiation.
Abstract:
An STN liquid crystal element (20) comprises a first substrate (1) with a first electrode (3), a second substrate (2) with a second electrode (4), a color filter (7) formed on the first or second substrate (1, 2) and consisting of a plurality of color filters, and 180 - 270 DEG twisted nematic liquid crystal (6) between the first and second substrates. A phase plate (12) and a polarizer (11) are provided outside the second substrate (2), which becomes the front side of the STN liquid crystal element (20), while a diffuser layer (13), a reflective polarizer (14) and a light-absorbing layer (15) are provided outside the first substrate (1). The color filter (7), having a thickness of 0.5 - 2.0 microns, comprises color resist composed of photosensitive resin with 5 - 20 % pigment and has a maximum transmittivity of more than 80 % and a minimum transmittivity of 20 - 50 %.
Abstract:
A liquid crystal display (100) achieves an enhanced colour reproduction by employing a wavelength-dependent light absorption sheet (121) disposed on the front side of the liquid crystal panel (110). The sheet (121) filters out light of wavelengths in the yellow and/or orange regions of the spectrum. The light to be absorbed by the sheet (121) is either present in the incident light or in the light from a backlight (200, 300) which is still passed by conventional colour filters (117). In this way, the light absorption sheet (121) reduces the amount of incident yellow / orange light which is reflected back towards the viewer, degrading the image. It also improves the colour purity of the light that has passed through the colour filters (117), so that the colour reproduction of the display is enhanced.
Abstract:
A display device is disclosed, the display device includes a backlight and a display panel on the backlight. The backlight includes a light source to provide a first light, and an optical wavelength converter (OU) to receive the first light and emits a second light. The optical wavelength converter (OU) includes a light emitting part having a plurality of excitation light emitting bodies (LUB) to be excited by receiving the first light, and thereby emit the second light, and a light absorbing part (ASP) including a plurality of absorbers (ABS) provided on the light emitting part to receive the second light and absorb a portion of the second light having a wavelength of about 550 nm to about 650 nm.
Abstract:
An array substrate, a manufacturing method thereof and a display device are disclosed. The array substrate includes: a substrate (100); a plurality of pixel units provided on the substrate (100), each of the pixel units including a plurality of functional layers; and a light shielding assembly (11) arranged between adjacent pixel units. The light shielding assembly (11) including: a light shielding layer (11a); a light absorption layer (11b) overlaid on the light shielding layer (11a); and an antireflection layer (11c) overlaid on the light absorption layer (11b). By means of providing an antireflection layer (11c) in the light shielding assembly (11), it can decrease the reflection of the external ambient light on the light shielding assembly (11), thereby improving the display contrast and the image display quality.