摘要:
An optical unit, comprising: a light source; a color separation means for separating a light emitted from the light source into plural pieces of color lights; reflection-type image display elements, upon each being incident the corresponding color of the lights from the color separation means, and for forming an optical image for each of the color lights, depending upon an image signal, with using polarization characteristics which the reflection-type image display elements have; and a color synthesizing means for synthesizing the optical images of the respective color lights, to be projected through a projection lens, enlargedly, and further comprising: a reflection-type polarization plate functioning as a polarization plate due to diffraction, being provided on an optical path extending from the color separation means to the reflection-type image display elements, to be a polarizer and an analyzer to the reflection-type image display elements; and an optical chassis for holding the reflection-type polarization plate and the reflection-type image display elements thereon, and having a translucent window on an incident light side of the reflection-type polarization plate while an exiting light side of the reflection-type polarization plate is sealed with an incident surface of the color synthesizing means, wherein a hermetically sealed space is defined by the optical chassis, the reflection-type image display elements and the incident surface of the color synthesizing means, and within the hermetically sealed space is disposed a translucent liquid having refraction index from 1.2 to 1.9.
摘要:
In a reflection-type image projecting unit, being applicable into a reflection-type image display apparatus, being superior in contrast and achieving small-sizing of the apparatus, together with a light source for use therein, a light flux including three (3) color components, R, G and B, emitted from a light source portion 100, are modulated and synthesized by means of reflection-type liquid crystal panels 221, 222 and 223 in an optical engine 200, which is constructed with three (3) prism-like polarization light beam splitters, to be emitted thereform, wherein those three (3) prism-like polarization light beam splitters are so displosed, that the G-component light of the three component lights R, G and B modulated on the reflection-type liquid crystal panel elements penetrates through two (2) of the prism-like polarization light beam splittrers 231 and 232, to be emitted therefrom, while the others, the B-component light and the R-component light penetrate therethrough after being reflected thereupon, or they are reflected after penetrating therethrough, while taking the planes of polarization lights of the propagating lights into the consideration.
摘要:
A purpose of the present invention is to provide a simple configuration for bonding a lenticular lens sheet, a front sheet, and light diffusion layers together to reduce cost. To accomplish the above purpose, the present invention comprises: a lenticular lens sheet (20); a front sheet (30); a first adhesive layer (35) for bonding the lenticular lens sheet (20) and the front sheet (30) together, the first adhesive layer (35) being disposed between the lenticular lens sheet (20) and a light incident side of the front sheet (30); an AR film (40); and a second adhesive layer (36) for bonding the front sheet (30) and the AR film (40) together, the second adhesive layer (36) being disposed between a light exit side of the front sheet (30) and the AR film (40); wherein light diffusion materials are spread in the first and second adhesive layers to add a light diffusion function to the layers.
摘要:
The present invention is directed to the provision of a reflecting mirror that suppresses decreases in the resolution performance and contrast performance by decreasing the mean surface roughness. In a projection type image display apparatus including a projector lens that expansion projects the image light from an image generating source and a reflecting mirror that guides the image light from the projector lens to the back face of the screen, according to the present invention, a silver reflecting surface (2) is formed on the substrate (1) of the reflecting mirror, a protective layer (3) of a transparent resin is formed thereon, and the mean surface roughness of the silver reflecting layer is made to be 1.8 nm or less.
摘要:
An optical unit includes a light source, a color separator, reflection-type image display elements, a color synthesizer, a reflection-type polarization plate, and an optical chassis. The optical chassis holds the reflection-type polarization plate and the reflection-type image display elements thereon, and has a translucent window on an incident light side of the reflection-type polarization plate while an exiting light side of the reflection-type polarization plate is sealed with an incident surface of the color synthesizer. A hermetically sealed space is defined by the optical chassis, the reflection-type image display elements and the incident surface of the color synthesizer, and within the hermetically sealed space is disposed a translucent liquid having a refraction index from 1.2 to 1.9.
摘要:
In a reflection-type image projecting unit, being applicable into a reflection-type image display apparatus, being superior in contrast and achieving small-sizing of the apparatus, together with a light source for use therein, a light flux including three (3) color components, R, G and B, emitted from a light source portion 100, are modulated and synthesized by means of reflection-type liquid crystal panels 221, 222 and 223 in an optical engine 200, which is constructed with three (3) prism-like polarization light beam splitters, to be emitted therefrom, wherein those three (3) prism-like polarization light beam splitters are so disposed, that the G-component light of the three component lights R, G and B modulated on the reflection-type liquid crystal panel elements penetrates through two (2) of the prism-like polarization light beam splitters 231 and 232, to be emitted therefrom, while the others, the B-component light and the R-component light penetrate therethrough after being reflected thereupon, or they are reflected after penetrating therethrough, while taking the planes of polarization lights of the propagating lights into the consideration.
摘要:
In a lamp operation controller and a method thereof, for obtaining a stable light emission, simply and certainly, without necessity of detection of a parameter accompanying discharge, the lamp operation controller, for operating a discharge lamp having a pair of electrodes, which are disposed at both ends of a light emission tube to have a predetermined distance therebetween, converts electric power of an electric power source 1, through an inverter, into alternating voltage and alternating current, changing the polarity thereof continuously and alternately, so as to produce operating current, and apply that across the pair of the electrodes of the discharge lamp, thereby letting the lamp to emit a light. A driver circuit provides a pulse at a trailing edge of the lamp current or the lamp voltage to be supplied when the discharge lamp emits the light, and also determine amplitude of the pulse, in accordance with fluctuation on the lamp voltage (VL) with respect to lighting time of the discharge lamp, which is measured in advance.
摘要:
In a lamp operation controller and a method thereof, for obtaining a stable light emission, simply and certainly, without necessity of detection of a parameter accompanying discharge, the lamp operation controller, for operating a discharge lamp having a pair of electrodes, which are disposed at both ends of a light emission tube to have a predetermined distance therebetween, converts electric power of an electric power source 1, through an inverter, into alternating voltage and alternating current, changing the polarity thereof continuously and alternately, so as to produce operating current, and apply that across the pair of the electrodes of the discharge lamp, thereby letting the lamp to emit a light. A driver circuit provides a pulse at a trailing edge of the lamp current or the lamp voltage to be supplied when the discharge lamp emits the light, and also determine amplitude of the pulse, in accordance with fluctuation on the lamp voltage (VL) with respect to lighting time of the discharge lamp, which is measured in advance.
摘要:
A projector light source which facilitates molding of a reflector for obtaining a complicated reflecting surface and provides an improved cooling efficiency, which is characterized by molding the reflector of the light source using heat resistant plastic mixed with a high heat conductive material, whereby a molding accuracy is drastically improved compared to a heat resistant glass reflector, and a highly efficient light source is implemented by increasing a degree of design freedom using a high-order non-spherical reflecting surface. Furthermore, heat conductivity is increased by the use of a high heat conductive material for the reflector and heat dissipation to an outside is facilitated.
摘要:
Provided is a projection-type image display device which by means of a projection lens (2) magnifies and projects an optical image formed by a light source and an image display element, wherein an error indicator (5) for indicating anomalies in the device is disposed on the rear surface opposite the front surface of a device housing (1) to which the projection lens (2) is attached. The projection-type image display device further includes an AC voltage monitor unit (12) for monitoring voltage waveforms supplied form an external power source and retaining voltage waveform data during the latest prescribed period in a memory, and reads out the voltage waveform data from the external power source retained in the memory and displays the voltage waveform data on the error indicator (5) as said anomalies.