摘要:
An optical prism (1) for reflecting incident light from an incidence surface (2) suited for incidence of light from an LCD (20) or the like for at least twice before emitting the reflected light as emission light from a predetermined emission surface (4). The optical prism has side surfaces (6L and 6R) crossing the incidence and emission surfaces (2 and 4) and including receded surfaces 7L and 7R) formed such as not to impede an optical path of an effective size, the incident light being led along the optical path from the incidence surface to the emission surface.
摘要:
An optical prism (1) for reflecting incident light from an incidence surface (2) suited for incidence of light from an LCD (20) or the like for at least twice before emitting the reflected light as emission light from a predetermined emission surface (4). The optical prism has side surfaces (6L and 6R) crossing the incidence and emission surfaces (2 and 4) and including receded surfaces 7L and 7R) formed such as not to impede an optical path of an effective size, the incident light being led along the optical. path from the incidence surface to the emission surface.
摘要:
It is the object of the invention to provide a compact and highly stable head-mount image display apparatus capable of always transmitting voice information of an optimal volume, irrespective of the positional relationship between the head and the ear of an observer, which is related to the shape and/or size of the head. To attain the object, speakers incorporated in the apparatus of the invention can be moved to desired positions in accordance with changes in the positional relationship between the head and the ears of observers. Further, the apparatus of the invention can be folded to reduce the area the apparatus occupies.
摘要:
An optical sheet to be used as a screen on which an image is projected from an image projector is provided. The optical sheet is produced by joining a plurality of optical sheet members with end surfaces thereof meeting each other as joint surfaces. The optical sheet members are realized with lenticular lens sheets. Each lenticular lens sheet has lenses, which are elongated in a second direction, juxtaposed in a first direction orthogonal to the second direction. The optical properties of the optical sheet members that are slightly undulated vary cyclically in the first direction. And the optical sheet members to be joined are a selected pair of optical sheet members whose undulations are substantially identical to each other or symmetrical to each other with respect to the joint surfaces.
摘要:
A light modulating unit includes first and second light modulating sections each of which modulates an illumination light on the basis of a video signal to generate a projection light that is a linearly polarized light, a light path synthesizing section which synthesizes the projection lights generated by the first and second light modulating sections using the nature that directions of polarizations of the projection lights cross at right angles, and a beam shifting section which sets beams of the projection lights synthesized by the light path synthesizing section, in a shifted state or a non-shifted state on the basis of the directions of polarizations of the projection lights, the beam shifting section switching the shifted state and the non-shifted state synchronously with modulation timings for the first and second light modulating sections.
摘要:
An image forming system is provided which includes an optical sheet and an image projector. The optical sheet is constructed by joining a plurality of sheet members with adjoining sheet members meeting to form a joint line. The image projector produces an image and projects the image to the optical sheet through a projection optical system. The relative positional relationship between the image projector and optical sheet is such that the optical axis of the projection optical system included in the image projector perpendicularly intersects the joint line in the optical sheet. Thus, reflection or scattering of light at the joint line is minimized.
摘要:
A light modulating unit includes first and second light modulating sections each of which modulates an illumination light on the basis of a video signal to generate a projection light that is a linearly polarized light, a light path synthesizing section which synthesizes the projection lights generated by the first and second light modulating sections using the nature that directions of polarizations of the projection lights cross at right angles, and a beam shifting section which sets beams of the projection lights synthesized by the light path synthesizing section, in a shifted state or a non-shifted state on the basis of the directions of polarizations of the projection lights, the beam shifting section switching the shifted state and the non-shifted state synchronously with modulation timings for the first and second light modulating sections.
摘要:
The invention provides a promoter derived from a genome of an actinomycete, Streptomyces species, and can specifically induce expression of a transgene in an actinomycete, Streptomyces species, in and after a logarithmic growth phase, and an actinomycete host having a high secondary metabolite production ability and a high precursor supply ability in and after the logarithmic growth phase, and a method for producing useful substances in which the promoter and the actinomycete host are combined.
摘要:
A permanent wave treatment apparatus comprises: a housing 3; a blower 1 which is installed within the housing to suck air and blow air; a steam separator 2 which is provided on the blower to remove water content from air sucked by suction force of the blower; an outlet hole formed in the housing through which air is spouted from the blower; hoods F mounted on the housing such that they are capable of being opened/closed freely; a plurality of rods R on which the hair of an object person is to be wound and in which air vent holes are formed; tubes 4 connected to the rods so as to keep the interior of the rods in a negative pressure by the suction force of the blower; and extraction member 5 which holds a plurality of the tubes such that they are capable of being extracted freely.
摘要:
The present invention provides a polarization switching liquid crystal element 1 having TN liquid crystal 7 retained between two transparent substrates 2a and 2b for transmitting at least visible polarized light with the polarized light transmission axis selectively rotated by 90 degrees when a voltage is selectively applied to the TN liquid crystal 7, wherein a phase difference u of said TN liquid crystal 7 is defined by the following equation: u=2×Δn×d/λ, where Δn is the refractive index anisotropy of said TN liquid crystal 7, d is the thickness of said TN liquid crystal 7, and λ is the wavelength of said polarized light, and a transmittance T of said polarization switching liquid crystal element measured with polarization plates on the incident and outgoing sides is defined by the following equation: T=(½)×sin2{π(1+u2)1/2/2}/(1+u2), and wherein the phase difference u includes a value 1.7 and the transmittance T is 0.1 or lower when the λ ranges from 400 nm to 700 nm. Then, a polarization switching liquid crystal element having a high response speed and reduced wavelength-dependency can be realized using inexpensive and highly durable TN liquid crystal without increasing parts cost.
摘要翻译:本发明提供了一种偏振切换液晶元件1,其具有保持在两个透明基板2a和2b之间的TN液晶7,用于当选择性地施加电压时透射偏振光透射轴选择性旋转90度的至少可见偏振光 对于TN液晶7,其中所述TN液晶7的相位差u由以下等式定义:u = 2×Deltanxd /λ,其中Deltan是所述TN液晶7的折射率各向异性,d是厚度 的所述TN液晶7,λ是所述偏振光的波长,并且在入射侧和出射侧用偏振板测量的所述偏振切换液晶元件的透射率T由以下等式定义:T =(1/2) (1 + u 2/2)/(1 + u 2/2) ),并且其中相位差u包括值1.7和透射率T i 当λ范围为400nm至700nm时,其为0.1或更低。 然后,可以使用廉价且高度耐用的TN液晶来实现具有高响应速度和降低的波长依赖性的偏振切换液晶元件,而不增加部件成本。