摘要:
Provided is a magnetic recording device which can perform high density magnetic recording by simple constitution. The magnetic recording device is provided with a disc driving means for rotating a magnetic disc; a head having a heating section for heating a circular track of the magnetic disc and a recording element for applying a magnetic field modulated by an electric signal to the magnetic disc; and a head driving means for circularly moving the head in the radius direction of the magnetic disc by rotating about a driving shaft. The recording element has a magnetism applying section that traverses any track heated by the heating section in the radius direction of the magnetic disc.
摘要:
A diffraction grating device for splitting or coupling light beams permits the divergence of the light beams to be minimized easily. A first light beam is incident on a diffraction grating from the side thereof facing the inside of the device, and a second light beam is incident on the diffraction grating from the side thereof facing air. The diffraction grating transmits the first light beam by diffraction of the minus first order so that it travels in the reverse direction along the optical path of the second light beam before incidence, and transmits the second light beam by diffraction of the zero order. The second light beam, transmitted by diffraction of the zero order, spreads over a certain width of wavelengths, but does not diverge even after diffraction.
摘要:
A diffraction grating device for splitting or coupling light beams permits the divergence of the light beams to be minimized easily. A first light beam is incident on a diffraction grating from the side thereof facing the inside of the device, and a second light beam is incident on the diffraction grating from the side thereof facing air. The diffraction grating transmits the first light beam by diffraction of the minus first order so that it travels in the reverse direction along the optical path of the second light beam before incidence, and transmits the second light beam by diffraction of the zero order. The second light beam, transmitted by diffraction of the zero order, spreads over a certain width of wavelengths, but does not diverge even after diffraction.
摘要:
An organic light-emitting element including an organic light-emitting layer, a transparent substrate, and a transparent electrode disposed between the organic light-emitting layer and the transparent substrate; and which treats the surface of the transparent substrate on the opposite side from the transparent electrode as a light-extraction surface. The transparent substrate has birefringence, and has a refraction index of a P polarized light that is less than a refraction index of an S polarized light. A polarized light wherein an oscillation direction of an electric field is parallel to a laminated surface of the light-emitting layer is designated S polarized light, and a polarized light that includes a vector of the direction of the progression of the light and in which the oscillation direction of the electric field is included in a plane perpendicular to the laminated surface is designated P polarized light.
摘要:
Disclosed is a deflection optical element, which makes it possible to deflect an incident light so as to couple the incident light to an optical element disposed in the later stage without deteriorating the optical efficiency. The deflection optical element, which deflects an incident light coming along a first optical axis at a deflection surface and emits an emission light propagating along a second optical axis so as to couple the emission light to either a diffraction grating or a refracting optical system, comprises at least one diffracting surface and at least one reflecting surface, wherein the angle θn, an angle θt derived as a total diffraction angle caused by the at least one diffracting surface, and an angle θa, which is formed at a second intersection of the first optical axis and the second optical axis, fulfill a conditional relationship of: 0≦θn
摘要翻译:公开了一种偏转光学元件,其使得可以偏转入射光,以将入射光耦合到设置在后面的光学元件中,而不会降低光学效率。 偏转光学元件使偏转表面沿着第一光轴的入射光偏转并发射沿着第二光轴传播的发射光,以将发射光耦合到衍射光栅或折射光学系统,包括 至少一个衍射表面和至少一个反射表面,其中所述角度和角度; n,作为由所述至少一个衍射表面引起的总衍射角的角度和角度;以及角度和角度; a,其形成在 第一光轴和第二光轴的第二交点满足条件关系:0&nlE;&Thetas; n <&thetas; a <&thetas; t。
摘要:
An optical recording head to record information onto a recording medium utilizing light including; a slider provided to move relatively to the recording medium; a light propagation element provided on a side surface of the slider substantially vertical against a recording surface of the recording medium so as to cause propagation of light incident with a predetermined angle to be irradiated on the recording medium; and, a prism provided on the light propagation element so as to oppose to the side surface of the slider having the light propagation element and to deflect the incident light to be incident into the light propagation element with a predetermined angle.
摘要:
A recorder has a recording head which uses light for information recording to a recording medium. The recording head has a slider and an optical waveguide. The slider moves relative to the recording medium while floating thereon. The optical waveguide is provided in the slider and has a refractive index difference of 20% or more between a core and a cladding.
摘要:
An optical head having: a graded index lens which receives incident light radiated from a linear optical guide at one end surface of the graded index lens and transmits the incident light from the other end surface of the graded index lens, the graded index lens is adapted to form a light spot at a position that is away from the other end surface from which the incident light is transmitted; a light path deflection section which deflects light transmitted from the graded index lens, the light path deflection section is arranged between the other end surface from which the incident light is transmitted and the position where the light spot is formed; and a slider which floats on a recording medium while moving relative to the recording medium, wherein at least the graded index lens and the light path deflection section are installed on the slider.
摘要:
A recorder has a recording head which uses light for information recording to a recording medium. The recording head has a slider and an optical waveguide. The slider moves relative to the recording medium while floating thereon. The optical waveguide is provided in the slider and has a refractive index difference of 20% or more between a core and a cladding.
摘要:
A diffraction grating device for splitting or coupling light beams permits the divergence of the light beams to be minimized easily. A first light beam is incident on a diffraction grating from the side thereof facing the inside of the device, and a second light beam is incident on the diffraction grating from the side thereof facing air. The diffraction grating transmits the first light beam by diffraction of the minus first order so that it travels in the reverse direction along the optical path of the second light beam before incidence, and transmits the second light beam by diffraction of the zero order. The second light beam, transmitted by diffraction of the zero order, spreads over a certain width of wavelengths, but does not diverge even after diffraction.