JPH0354596A - Multivision - Google Patents

Abstract

PURPOSE:To obtain a projected image on a high-definition large screen without a joint by modulating light beams from plural light sources by light valves respectively, forming adjacent multi images through a lens and projecting them on the screen by a projecting lens. CONSTITUTION:After modulating the intensity of light by the plural light valves 2, the luminous fluxes from the light sources 1 are formed into the images respectively by the lenses 3 on a side opposite to the light valves 2. At such a time, the lamp, the light valve and the lens are arranged in a line so that the respective formed images are made closely adjacent to constitute a non- optical axis optical system. Since the formed image is a real image, the large projecting lens 5 incorporating all the light of the image is provided on the screen side of the image and the formed image and the screen 6 are adjusted to be a conjugate position, so that the multi images can be projected closely on the screen 6. Though the erect images of the light valves 2 become an image line where their order is inverted on the screen 6, it is not a problem by arranging the light valves 2 in the direction of the image required on the screen 6.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a projection display device for displaying video images and computer graphics images. In the past, multiple projection devices were used to independently align adjacent images and focus on the screen. Moreover, because the seams were incomplete, a boundary separation strip was used in the screen shown in FIG.

[Problems to be Solved by the Invention] However, the above-mentioned conventional technology has the problem that the next border separation strip stands out like an iron grid and cannot be seen as a natural image, and if it is made reflective, it will interfere with the audience. This has the problem that projection devices are mixed and there are many restrictions, making it virtually impossible.

Moreover, it is difficult to make adjustments each time the equipment becomes larger.
Changing the projection distance also has the problem of requiring readjustment.

Therefore, the present invention aims to solve these problems.
Its purpose is to provide a seamless, high-definition, large-screen projected image.Moreover, the device is relatively small, and the projection distance and screen size can be set arbitrarily, and the adjustment at that time is focus adjustment. It also provides a projection device that is easy to operate.

[Means for Solving the Problem] The multi-vision of the present invention includes a plurality of light valves that modulate light from a light source, and a light modulated by the light valves.
It is characterized by comprising a plurality of lenses that form a real image with gaps between adjacent images on the opposite side of the lens itself, and a projection lens that projects the formed image onto a screen.

[Embodiment 1] Fig. 1 is a main cross-sectional view of an embodiment of the present invention, in which the light intensity is modulated by a plurality of light valves 2 that modulate the luminous flux from the light source 1, and the light intensity is modulated by the lens 1. Each image is formed on the opposite side. At this time, the lamp, light valve, and lens are arranged in a straight line using a non-optical optical system so that images are formed adjacent to each other without any gaps. Since this image formation is a real image, it looks as if it were modulated by a light pulse.
Alternatively, a large projection lens that swallows the image's light immediately on the screen of the image can be adjusted so that the image and the screen are in a conjugate position, so that the image appears to be emitting light. This allows multiple images to be projected on the screen without any gaps. The images A to D on the light pulse pass through the lens and become individual images A' to D', and the entire image is projected onto the screen by the projection lens. Therefore, on the screen, the erect image of the light valve becomes an ordered image sequence, but the orientation of the image required on the screen is
By arranging the light bulbs, there are no more than 14 problems.By housing everything from the above lamp to the projection lens in one housing, it can be treated as a projector that projects with a single high-definition light bulb. According to the present invention, the light from the light source is modulated by a light valve, passes through a lens, creates adjacent multi-images, and is projected onto a screen by a projection lens.
It can be regarded as a single-lens projector, and once the position of the light pulse is adjusted during the manufacturing process, a high-definition image can be projected anywhere by simply focusing, even if the projection distance is changed arbitrarily. This has the effect of providing a projection device that is lightweight and has excellent portability.

[Brief explanation of drawings]

FIG. 1 is a main sectional view showing an embodiment of the multi-vision of the present invention. FIG. 2 is a front view showing the screen surface of a conventional multi-vision device. Figure 6 is a surface diagram of a conventional multi-vision system. 1...Light source 2...Light valve 3...Lens 4...Image formation 5... ......Projection lens 6.56...Screen 7...Housing A-D...Image A'-D' on light pulse
...Image A"~D" on the image formation ...Image 21 on the screen...
...Screen surface 22...Boundary separation strip 23...Housing 30...Beyond the projection device

Claims (1)

[Claims] A plurality of light valves that modulate light from a light source, a plurality of lenses that form a real image of the light modulated by the light valves with adjacent images on the opposite side of the lens itself, and project the image onto a screen. Multivision is characterized by consisting of a projection lens.