CN214474392U

CN214474392U - 4K device of 2K film projection engine

Info

Publication number: CN214474392U
Application number: CN202120216115.XU
Authority: CN
Inventors: 罗丽; 郑光
Original assignee: Beijing Light Super Shadow Technology Co ltd
Current assignee: Beijing Light Super Shadow Technology Co ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2021-10-22
Anticipated expiration: 2031-01-27

Abstract

The utility model discloses a 4K device of 2K film projection engine, include: the Digital Micromirror Device (DMD) comprises a DMD optical modulator, a projector lens, an electric control swing mirror controller and an imaging screen; the DMD spatial light modulator is 2K in resolution and used for inputting pictures and reflecting light sources, the reflected light sources penetrate through a lens of a projector and are projected onto an electric control swing mirror, the surface of the electric control swing mirror can swing by taking a vertical central line and a horizontal central line of the electric control swing mirror as axes, the swing frequency is a quarter frame rate, the surface of the electric control swing mirror can reflect incident light, an electric control swing mirror controller is connected with the electric control swing mirror and controls the motion state and the swing angle of the electric control swing mirror, and an imaging screen and the electric control swing mirror in a static state form an included angle of 45 degrees and is used for receiving the light sources reflected by the surface of the electric control swing mirror. The device can realize the projection of the 4K film without replacing the existing 2K projection equipment, thereby saving a large amount of funds and avoiding the generation of electronic wastes.

Description

4K device of 2K film projection engine

Technical Field

The utility model relates to a projection technology field especially relates to a 4K device of 2K film projection engine.

Background

At present, a digital cinema projection mode becomes a mainstream projection mode of movie theaters in China, however, the resolution of most digital cinema projectors is only 2K, and the resolution of 4K is less than 5 percent of that of digital cinema projectors. For movie theaters, the need to realize a 4K resolution movie projection not only means that 4K resolution movie projectors need to be purchased again, but also a large number of 2K movie projectors need to be scrapped, which costs a large amount of money and generates a large amount of electronic waste. In practice, the core components of a digital cinema projector are optical engines, one for each projector, including a DMD spatial light modulator and a projector lens. The optical engine in the 2K film projector is utilized to realize the display of the 4K picture, thereby saving the fund and avoiding the generation of electronic garbage. The applicant has therefore made an advantageous search and attempt to solve the above-mentioned problems, in the context of which the technical solutions to be described below have been created.

Disclosure of Invention

The utility model discloses the technical problem who solves: the 4K device of the 2K film showing engine is provided aiming at the problems that the 4K film showing needs to replace the existing showing equipment, not only consumes a large amount of funds, but also easily generates a large amount of electronic rubbish.

The utility model provides a technical problem can adopt following technical scheme to realize:

a 2K film projection engine 4K device, comprising: DMD spatial light modulator, projector camera lens, automatically controlled swing mirror controller and imaging screen:

the DMD spatial light modulator has 2K resolution and is used for inputting pictures and reflecting a light source, and the reflected light source penetrates through the lens of the projector and is projected onto the electric control swing mirror;

the mirror surface of the electric control swing mirror can swing by taking a vertical central line and a horizontal central line of the mirror surface as axes, the swing frequency is a quarter frame rate, and the mirror surface of the electric control swing mirror can reflect incident light;

the electric control swing mirror controller is connected with the electric control swing mirror and used for controlling the motion state and the swing angle of the electric control swing mirror;

the imaging screen and the electric control swing mirror surface in a static state form an included angle of 45 degrees and are used for receiving light rays reflected by the electric control swing mirror surface.

In a preferred embodiment of the present invention, the electronically controlled oscillating mirror oscillates back and forth in one dimension with its own vertical or horizontal center line as an axis, and the oscillating position in each frame rate is fixed.

In a preferred embodiment of the present invention, the electrically controlled oscillating mirror oscillates back and forth in two dimensions with its own vertical and horizontal center lines as axes, and the oscillating position in each frame rate is fixed.

Due to the adoption of the technical scheme, the beneficial effects of the utility model reside in that: the 2K engine is used for realizing the film projection with the resolution of 4K, effectively avoiding the situation that a cinema purchases a special film projector with the resolution of 4K again, not only saving a large amount of funds, but also reducing the generation of a large amount of electronic wastes, and being economical and practical.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, and the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the horizontal one-dimensional swing rear projection direction of the electric swing mirror of the present invention.

Fig. 3 is a schematic view of the projection position after the two-dimensional swing of the electric swing mirror of the present invention.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

It should be noted that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present invention are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present invention, and those skilled in the art can understand the specific meanings of the above terms in the present invention according to the specific situation.

Example 1

The utility model discloses a look at fig. 1 and be the overall structure schematic diagram of the utility model, the utility model discloses a 2K film projection engine 4K device, including DMD spatial light modulator 010, projector camera lens 011, automatically controlled pendulum mirror 012, automatically controlled pendulum mirror controller 013 and imaging screen 014. The DMD spatial light modulator 010 has a 2K resolution and is used for inputting a picture and reflecting a light source, and the reflected light source passes through the projector lens 011 and is projected onto the electronically controlled swinging mirror 012; the mirror surface of the electric control swing mirror 012 and the incident light form an included angle of 45 degrees in a static state, the mirror surface of the electric control swing mirror 012 can swing by taking a vertical central line and a horizontal central line of the mirror 012 as axes, the swing frequency is a quarter frame rate, and the mirror surface of the electric control swing mirror 012 can reflect the incident light; the electric control swing mirror controller 013 is connected with the electric control swing mirror 012 to control the motion state and swing angle of the electric control swing mirror 012; the imaging screen 014 forms an included angle of 45 degrees with the mirror surface of the electric control swing mirror 012 in a static state, and is used for receiving the light reflected by the mirror surface of the electric control swing mirror 012.

As shown in fig. 1, when the device is in operation, the picture information is stored in the DMD spatial light modulator 010, when the light source irradiates the DMD spatial light modulator 010, a picture with a pixel size of 2048 × 1080 or 1080 × 2048 is formed, the picture is projected onto the projector lens 011, the projector lens 011 is equivalent to a convex lens without chromatic aberration and aberration, the picture passing through the lens is enlarged, the enlarged picture is projected onto the mirror surface of the electronically controlled swinging mirror 012, and the picture reflected by the mirror surface is finally projected onto the imaging screen 014.

Referring to fig. 2, in order to obtain a complete 4K frame in a frame rate, the apparatus operates as follows: dividing a complete picture into four sub-pictures vertically, storing the leftmost quarter of the sub-pictures in a DMD spatial light modulator 010 to obtain a picture with the pixel size of 1080 × 2048, projecting the picture on an electrically controlled swinging mirror 012 through a projector lens 011, swinging the electrically controlled swinging mirror 012 to the leftmost side by taking a vertical central line as an axial direction, and projecting the picture on the imaging screen 014 at the position shown in the drawing 020; after the quarter frame rate, storing the adjacent sub-pictures in DMD spatial light modulator 010, swinging electrically controlled swing mirror 012 along the vertical center line in the axial direction to the right, passing through the same optical path, and projecting the pictures on the position of imaging screen 014 as shown in 021; repeating the above steps after the quarter frame rate, and projecting the picture on the position of the imaging screen 014 as shown in fig. 022; repeating the above steps after the quarter frame rate, and projecting the picture on the position of the imaging screen 014 as the diagram 023; at this time, in one frame rate, four

2K pictures

020, 021, 022 and 023 are sequentially displayed on the imaging screen 014, and the four pictures are closely arranged to form a complete 4320 × 2048 picture, i.e. 4K picture. The electronically controlled oscillating mirror 012 is controlled for each frame of picture to be played continuously, i.e. the 2K engine is used to realize the projection of 4K film, thereby enhancing the resolution of the picture.

Example 2

The same parts of this embodiment as embodiment 1 are not described again, but the differences are: referring to fig. 3, in order to realize a 4K display on an imaging screen in the horizontal and vertical directions, the electronically controlled oscillating mirror 012 needs to be oscillated in two dimensions, and the operation method of the device is as follows: dividing a complete picture horizontally and vertically into four sub-pictures, storing the upper left sub-picture in the DMD spatial light modulator 010 to obtain a picture with the pixel size of 2048 x 1080, projecting the picture on the electronically controlled swinging mirror 012 through the projector lens 011, swinging the electronically controlled swinging mirror 012 to the upper left side, and projecting the picture on the imaging screen 014 as shown in fig. 030; after the frame rate is one fourth, the upper right sub-picture is stored in the DMD spatial light modulator 010, and the electronically controlled oscillating mirror 012 oscillates to the right, passes through the same optical path, and projects the picture on the position of the imaging screen 014 as shown in fig. 031; after the quarter frame rate, the lower right sub-picture is stored in the DMD spatial light modulator 010, and the electronically controlled oscillating mirror 012 oscillates downwards to project the picture on the imaging screen 014 at the position as shown in fig. 032; after the quarter frame rate, the lower left sub-picture is stored in the DMD spatial light modulator 010, and the electronically controlled oscillating mirror 012 oscillates to the left, so that the picture is projected on the position, as shown in fig. 033, of the imaging screen 014; at this time, four

2K frames

030, 031, 032, 033 are sequentially displayed on the imaging screen 014 at one frame rate, and the four frames are closely arranged to form a complete 4096 x 2160 frame, i.e., a 4K frame. The electronically controlled oscillating mirror 012 is controlled for each frame of picture to be played continuously, i.e. the 2K engine is used to realize the projection of 4K film, thereby enhancing the resolution of the picture.

The basic principles and main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A 2K film projection engine 4K-rendering apparatus, comprising: DMD spatial light modulator, projector lens, electric control swing mirror controller and imaging screen,

the imaging screen and the electric control swing mirror surface in a static state form an included angle of 45 degrees and are used for receiving the light source reflected by the electric control swing mirror surface.

2. The 4K device for a 2K film projection engine as claimed in claim 1, wherein the electronically controlled oscillating mirror oscillates back and forth in one dimension around its vertical or horizontal center line, and the oscillating position in each frame rate is fixed.

3. The 4K device for a 2K film projection engine as claimed in claim 1, wherein the electronically controlled oscillating mirror oscillates back and forth in two dimensions with its own vertical and horizontal center lines as axes, and the oscillating position in each frame rate is fixed.