JPH10301203A - Infinity display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and accurately display a position by adjusting the deflecting circuit of a projector device so that a point projected from a tent block plotted by a laser is aligned. SOLUTION: When a light beam having a specified angle irradiates from the laser 2 placed on a viewing point position, the light beam is reflected by a concave mirror 4, then image-formed on a rear screen 3. The angle of this irradiating light beam is changed by 5 deg. pitch, and an image-formation point on the screen 3 is marked as a mark. On the other hand, a video converted into two-dimensional data by performing perspective transformation on three- dimensional data which can be viewed at a specified angle in the case of being viewed from the viewing point position is projected from a projection type projector 1. While making the point plotted by this laser beam a reference, the deflecting circuit of the projector 1 is adjusted, and the video is aligned with the point marked with the laser beam. As a result, the video projected from the projector 1 is displayed on an accurate position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a projector for displaying images at infinity.

[0002]

2. Description of the Related Art Conventional image adjustment of a projector is performed by projecting a predetermined test pattern on a screen and making fine adjustments while checking each point at a predetermined display position by a method such as transit. I was going by.

[0003]

In the above-mentioned prior art,
In order to display the image at a predetermined position when adjusting the projector, it is necessary to make adjustments while checking each point of the adjustment pattern, which requires a lot of time. Therefore, an object of the present invention is to perform accurate adjustment in a projector by a simpler method.

[0004]

In order to achieve the above object, the present invention is to display a reference point by using a laser. More specifically, the projector's deflection circuit is adjusted at the points plotted by the laser using a structure that has an infinity display device consisting of a projection type projector, a rear screen that projects it, and a concave mirror that reflects the image on the rear screen. It was done.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.

FIG. 1 shows an example of a display device at infinity. FIG.
, 1 is a projection type projector, 2 is a laser, 3 is a rear screen, and 4 is a concave mirror. In FIG. 1, a laser beam at a predetermined angle is emitted from a laser placed at a viewpoint position. After being reflected by the concave mirror 4, this light beam forms an image on the rear screen 3. The angle of the irradiating light beam is changed at a pitch of 5 degrees, and a point formed by irradiating the image on the rear screen 3 is marked as a mark. On the other hand, an image (an example is shown in FIG. 2) obtained by performing perspective transformation on three-dimensional data that can be seen at a predetermined angle (5-degree pitch) when viewed from the viewpoint position and converting the image into two-dimensional data is shown in FIG.
Project from 1 Then, the deflection circuit (analog convergence, digital convergence) of the projection type projector 1 is adjusted with reference to the point plotted by the laser light, so that the image coincides with the point marked by the laser light. As a result, the image projected from the projection type projector 1 is displayed at an accurate position.

[0007]

As described above, according to the present invention, in the projector device for displaying at infinity, the deflection circuit of the projector device is adjusted so that the points projected from the tent projector plotted by the laser coincide with each other. Accurate position display can be easily performed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a diagram showing an example of an adjustment pattern according to the present invention.

[Explanation of symbols]

1: Projection projector, 2: Laser, 3: Rear screen, 4: Concave mirror

Claims (1)

[Claims] 1. An infinity display device comprising a projection type projector device, a rear screen for transferring the projector device, and a concave mirror for reflecting an image on the rear screen, a laser provided at a viewpoint position is provided, and a predetermined laser is provided from the laser. After irradiating light at an angle and reflecting the light from the concave mirror, marking is performed at a point imaged on the rear screen, and three-dimensional data that can be seen at a predetermined angle when viewed from the viewpoint position is converted into two-dimensional data. Projecting the converted plot image from the projector, adjusting the deflection circuit of the projector so that the marking point and each point of the plot image coincide, and displaying the image of the projector at an accurate position. Characteristic display device at infinity.