Abstract:
A micromachine and a method of manufacturing the same which are suitable as or for a micromachine having a first dynamic fine structural portion constituting a driving portion, and a second static fine structural portion performing a switching function or a function of an optical element, the method comprising forming the second static fine structural portion on the first dynamic fine structural portion, or superposing the second static fine structural portion thereon and die transferring the same thereto, whereby the method enables the second fine structure to be formed without using at least a complicated step, such as a silicon process in an intermediate stage of the method, and into a complicated shape easily with a high reproducibility, and contributes to the improvement of the productivity. Especially, when a plurality of elements are arranged in an arrayed state as in a spatial light modulator, the die transfer techniques enable the second fine structure to be reproduced stably as compared with the techniques using a silicon process for forming all parts of a micromachine, whereby the subject method reduces the probability of occurrence of defects to a remarkably low level and contributes to the improvement of the yield.
Abstract:
An image display apparatus 100 that displays an image using a light modulated according to an image signal includes a projection optical system 90 that includes a projection lens 20, a first mirror 30 that reflects a light from the projection lens 20, and a second mirror 40 that widens an angle of a light from the first mirror 30 by reflecting the light, and projects the light modulated according to the image signal from an optical engine unit 10; a third mirror 50 that reflects a light from the projection optical system 90; and a screen 60 that transmits a light from the third mirror 50. The projection lens 20 and the second mirror 40 are arranged in such a manner that an optical axis of the projection lens 20 substantially matches an optical axis of the second mirror 40, and shift the light from the optical engine unit 10 to a specific side from the optical axis of the projection lens 20. It is possible to cause a light to travel accurately, to display an image, in a thin structure with a small non-display section adjacent to a screen.
Abstract:
An optical head and an optical recorder with which data can be recorded/reproduced onto/from a conventional CD-R without a problem and, further, data can be recorded/reproduced onto/from an optical recording medium of DVD standard which meets the requirements of the high recording density by employing a semiconductor laser beam which has a relatively longer wavelength than the track pitch of the optical recording medium and the optical super-resolution technique. Moreover, since a semiconductor laser beam which has a relatively longer wavelength than the track pitch of the optical recording medium can be employed by the optical head and the optical recorder, the limitation of the high density recording can be broken through and the optical pickup device and the optical recorder can record/reproduce data of the high recording density at a low cost and with the high reliability and can meet the requirements of the much higher recording density in future.
Abstract:
There are provided a spatial light modulation device and a projector capable of obtaining smooth image quality so that an observer does not recognize any light shading portion such as a black matrix. The projector includes a spatial light modulation device (110R) for modulating the incident light according to an image signal and emitting the modulated result and a prism group (210) arranged at the emission side of the spatial light modulation device (110R). The spatial light modulation device (110R) has an opening (230) as a plurality of pixel portions arranged in a matrix and a black matrix (220) arranged between them. The prism group (210) consists of a prism element (211) having at least a refraction surface (212). Light from one opening (230) is introduced into at least a part of the prism group (210). The direction of the refraction surface and the inclination angle ϑ are defined so as to introduce an opening image (230P) onto a black matrix portion image (220P) on a screen (116) at a predetermined distance L from the prism group (210).
Abstract:
A plurality of slant faces (1419) are formed on a substrate (1406). A polarized optical thin film is formed on the slant faces. The recess defined by the slant faces (1419) is filled with transparent material to form a small composite polarizing element. By this polarizing element, it is possible to detect magneto-optic signals excellent in transmissivity and extinction ratio and high in S/N ratio. Also, this polarizing element serves as the cover of the package (1408) of an optical head which houses a photodetecting element (1409) and a light emitting element (1411) integrally. Also, by use of an optical element having an optical path length adjustment function of varying the optical path length of the outgoing light beam from that of the incoming light beam, it is possible to eliminate the initial offset of the focal point error signals and to omit the adjustment at the same time. In this way, a small, simple and high-performance optical head used for magneto-optic recording and reproducing apparatus can be realized.
Abstract:
There is provided an image display device with which it is possible to visually recognize an image while securing the see-through property regardless of eye movements and changes in interpupillary distance, with which it is possible to display a large-size image with high quality, and which is small, has excellent wearability, and has an excellent external appearance. A display device 100 of the invention includes a light source optical system 15, a mirror 16 which reflects a light which is emitted from the light source optical system 15, a light scanning device 17 which scans the light which is reflected by the mirror 16, a pupil magnifying optical system 12 which magnifies a beam diameter of the light which is emitted from the light scanning device 17, a correcting optical system 13 on which the light which is emitted from the pupil magnifying optical system 12 is incident and which corrects an image which is generated at a position of an exit pupil G, and a holographic mirror 14 (a deflecting optical system) which deflects the light which is emitted from the correcting optical system 13 to guide the light to the position of the exit pupil G and transmits a portion of external light.
Abstract:
A display device of the embodiment includes an image generating unit which emits a light including an image information, and a light guide optical system which generates an image from the light which is emitted from the image generating unit at a position of an exit pupil, in which the light guide optical system is provided with a first mirror (a first deflection unit) which deflects the light which is emitted from the image generating unit, and a second mirror (a second deflection unit) which further deflects the light which is deflected by the first mirror to guide the light to the position of the exit pupil and transmits a portion of external light, and in which an optical axis of the light which propagates from the first mirror toward the second mirror and an optical axis of the exit pupil form an acute angle.
Abstract:
A light guide part which can reflect a light totally and transfer the light, an optical switching part which has its extraction plane close to a totally reflective plane to capture an evanescent light and reflects and emits the evanescent light and a driving part which drives the optical switching part are layered in the direction of the light emission in this order to obtain an optical switching device with a hierarchical structure. By employing the hierarchical structure, the respective layers can be optimized. Especially, as the extracted light is not passed through the driving part, the driving part can be optimized to provide an optical switching device which can operate at a high velocity and with a low power consumption. Therefore, an optical switching device which shows the low loss of a light utilizing an evanescent wave, has a high response velocity and, further, shows a large contrast ratio can be provided.
Abstract:
An image display has a light guide having a total reflecting surface which reflects guided light for image display totally transmits the light and an optical switch having a microprism which extracts the evanescent light leaking from the total reflecting surface and reflects it. Guided light is directed from two directions symmetrical with respect to a display area to produce light from the whole surface of the microprism. Therefore, an image display on which a brighter image having a higher contrast can be displayed is provided, by optimizing the vertex angle of the microprism, the directions of emitted rays of light are matched and directed vertically to the total reflecting surface, so that an image display which displays a high quality image is realized.
Abstract:
PROBLEM TO BE SOLVED: To provide a projector which is improved in convenience by achieving multiple image display and stereoscopic image display by using one projector, and which achieves improvement of efficiency of using luminous flux and miniaturization.SOLUTION: The projector 90 includes: a light source 10; an illumination optical system 20 which splits the luminous flux emitted from the light source 10 by a polarized light splitting optical element 21, and makes the split luminous flux (P polarized light or S polarized light) incident on an optical element disposed in a subsequent stage; a plurality of optical modulation optical systems (first optical modulation optical system 30 and second optical modulation optical system 35) modulating each luminous flux (P polarized light or S polarized light) made incident from the illumination optical system 20; and a plurality of projection optical systems (first projection optical system 50 and second projection optical system 52) projecting an optical image formed by the modulation by the plurality of optical modulation optical systems (first optical modulation optical system 30 and second optical modulation optical system 35).