JPS5846501A - Projector with color screen on disc - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a projector supported by at least one rotating disk selectively interposed in the path of a light beam from a light source and driven by drive means.

Prior Art Nine different floodlights are known with color screens for illuminating the stage.

In order not to increase the number of projectors unnecessarily, each projector must normally select several colors of white light to emit. On the other hand, some users may request that two colors (or other colors that they do not wish to have) be displayed by light projection instead of "white".

In the field of projectors so far, it has been considered highly reliable that color filters are selectively interposed in the path of the light beam using jacks.

Unfortunately, however, this type of projector generates its own noise and for this reason is unable to provide sufficient performance to the user.

The object of the invention is to eliminate the above-mentioned drawbacks and to provide a projector of the above-mentioned type which performs color conversion in a quiet manner and without producing an intermediate white color.

To achieve the above object, the present invention provides a three-color sector in which each disk has absolutely one color common to all disks, and a driving means for each disk provided in association with a controller RK. It is configured. Said driving means is configured to pass through the shortest angular path traversed by the light beam; It is arranged to rotate the disk by increasing the light beam.

Passing another color different from the common color from a color different from the common color is performed without passing the common color.

The eh common to all the discs is usually white, and it is desirable to avoid this white for the other two colors. However, other colors are considered less desirable for color conversion.

The number of F4 discs of the projector is such that the discs are arranged completely overlapping each other, or at the height of the light beam, at least one sector of each disc is easily superimposed. is determined according to the number of colors required for the projector. In this way, for a projector that can project white light, the existence of - discs means that it can project two other colors in addition to white.
The existence of two disks allows the projection of four pure colors by adding four combined colors to white, and generally produces 2n@0 pure colors in addition to white without considering the combined colors of NF ISK 21. It is possible to project light.

Furthermore, the selection of the "percent rotary drive" means that a quieter operation with a slightly louder key sound is performed compared to a coiled drive (compressed air kayak, etc.).

According to the invention, each disk is made up of only three sectors K, said disk being able to be rotated in one direction or the other, so that the inserted sector K during the passage of the light beam can be rotated. By construction, changes to other adjacent sectors are made at the closest distance, causing a change from one color to another without passing through the white color that occupies one of the three sectors. This will be done with certainty.

In other words, the absolute three colors, of which white is one, are placed on each disk at 120" intervals, including, but not limited to, Generally, there are three sectors:
Change of color 〇〇〇〇The rotation of the disk is in the forward direction or in the opposite direction, in order to receive the new color.
The alignment is normally within an angle of 120°.

The drive system for each disk is controlled within a few rotation angles, most within the range of rotation angles designed to position the newly selected screen. The newly selected screen position actually selects the direction of rotation of the screen, which itself is often seen in the past and is well known.

According to a first embodiment, the drive means for the disk and its control means consist of three electromagnetic coils arranged around a central core fastened to the shaft of the disk. These three electromagnetic coils are selectively activated by keystrokes.

According to this device, the most I" This can be said to be a distinctive design of this device.

Although in this embodiment the drive and control device are closely coupled, more sophisticated drive designs are also possible.

The drive device for the disk includes a step motor and an external drive roller for the disk, or includes a motor connected directly or in relation to the axis KWL of the disk.

This release is W! The first effect of A is that when the projector contains several effective disks, it can prevent the device from becoming large.

One turn or rotation and position or control of the position of the disk,
This is done by operating the drive means in one direction or the other via a suitable electrical circuit, such as with a screw or two potentiometers.

Hereinafter, with reference to the drawings, an explanation will be given of an exemplary embodiment of the present invention.
! I will clarify.

FIG. 1 shows the uniformly spaced color screens 1, occupied entirely or partially by color screens 5', # and IK, one of which is not favorable for color change. It includes three sectors.

A beam of light, not shown, passes through one of three sectors. The disk 1#'i can freely rotate around the shaft 8. Three electromagnetic coils 9°10.11 are 120
8 are fixedly arranged around the axis 8. These coils are grounded at one end and connected to switch 15. j
6.17 Three leads interrupted by 12.1
-3.14 to the common power supply A.

These switches are normally operated by selected keyboard operations, and closing of the switches is accomplished by automatically unlocking previously closed switches.

In one embodiment, when there is a single coil, the core provided and forming said axis is oriented in a predetermined direction with respect to this coil, thereby limiting one of three possible positions of said disk. do.

The closing of another switch or the connection of another coil to the power supply causes the movement of the core relative to the O coil to automatically move to the new position through the shortest angular path. Close these switches or manually or! Performed by four grams.

In FIG. 2, the disk 1 is rotatably supported by the shaft 1 and rotated by the operation of an external roller 18 driven by a motor 19. As shown in FIG. The operation of rotating the motor 19 in one direction or in the opposite direction is manual! This is carried out by an ordinary electrical circuit 20 based on the programmed positioning instructions, and as a result of the numerical display indicating the position, it is determined that the optical beam has passed through the holes arranged around the entire circumference of the disk 10. By the photodetecting element JJK to detect,
You can know its location.

゛In Figure 3, Mori, Clock 2.・4 is the motor 1
#Represents optical control for O drive.

In the 411th embodiment, the disk 10 shaft 8 is supported by the motor 1 at one end thereof by the frame 25.
9 and at the other end to a potentiometer 2II also supported by the frame 25, the indication of the disk position being transmitted to the electrical circuit 20 for controlling the motor 19.

The member shown in Fig. 5 has an axis of 8 m + 8 b * II
c supported by tt, aligned on line 2y, potentiometer 26m+26b*26 for automatic coupling of each rotation.
It is coupled to g. Said potentiometric needle has a mo/-19° with roller 18! ! The supporting body 21a continues.

21b and 21e. Light beam 28#i
By selectively passing through the three discs 1 &#1b + 1e and intervening the color filter, in addition to the white color produced by the fill of each disc, six pure colors and Generates eight combined colors.

Due to its design, the projector of the present invention is noiseless, compact, and avoids undesirable white color in the path when converting from one color to another.

Also, the simple design of the device of the present invention allows for easy 9 earrings.

It is required that each motor be capable of providing a positive wire, a negative wire and a common wire to the edible disc. Therefore, for the 6 pure colors in addition to the 12 whites, the wiring of the device of the invention has 117 wires, as shown in the embodiment of FIG. A conventional device with six filters is in high demand.

[Brief explanation of drawings]

The first WjA is a general WJl that embodies the embodiment of this invention 011EI! II%flllt2m Co., Ltd., Figure 3 is a schematic front view showing a second embodiment of the invention, Figure 4 is a schematic front view showing a third embodiment of the invention, Figure 4 is a fourth embodiment of the invention. The schematic diagrams 11, 5, and 5 are side views of the embodiment of the projector o*sey of the invention of the day.
+6 a r...Color starry, 20...Control circuit.

Claims (1)

Claims: 1. A color screen interposed in a light beam from a light source and supported by at least one rotating disk driven by a drive means, each said disk having a color screen that - It has absolutely three color sectors that are common to each other, and the means for driving each of the display units is different from the common color, and has a different color that is common to other colors. The increment corresponding to the path from the color sector traversed by the light beam to the new color sector traversed by the light beam through a path at an angle of 100 degrees by passing through the light beam instead of passing through it. 2. The projector according to claim 1, wherein the color common to all the discs is white. 3. The projector is connected to a control means to rotate the disc. The periphery of the central iron core is fixed to the shaft of the driving means and the control means expanding front disk. It has 3' electromagnetic coils arranged at the key I.
- The projector according to claim 1, which is selectively excited by key operation.゛4. Claim 1: The drive means comprises a motor and a drive roller arranged around the disk.
The projector according to item i111. (5) The drive means is coupled to the shaft of the disk;
The soft O projector described in claim 1, which is more powerful than the invention. 6. The projector according to claim 1, wherein the projector is controlled by a photoelectric element operated by an electric control means of a motor in front of the disk. 7. The projector according to claim 114 or 5, wherein the rotation of the disk is controlled by a clock that controls the motor by electric circuit means. 8. The rotation of the disc is controlled by an electrical circuit.
A projector according to claim 1/g 4 or 5 1, which is controlled by a potentiometer that controls the light.