CN211184133U

CN211184133U - Portable partition type viewer for watching left and right format 3D films

Info

Publication number: CN211184133U
Application number: CN202020482607.9U
Authority: CN
Inventors: 梁迎新; 其他发明人请求不公开姓名
Original assignee: Anyang Normal University
Current assignee: Anyang Normal University
Priority date: 2020-04-06
Filing date: 2020-04-06
Publication date: 2020-08-04
Anticipated expiration: 2030-04-06

Abstract

The utility model belongs to the stereoscopic vision imaging technology and discloses a portable viewer for viewing left and right format 3D films; the structure is as follows: the camera bellows of the viewer is formed by connecting a front end panel and a rear end panel by a surrounding tube made of soft cloth material, the soft cloth partition plate divides the camera bellows space into a left part and a right part, so that the left picture can be seen by a left eye and the right picture can be seen by a right eye from left and right observation ports at the front end of the camera bellows to the left and right pictures placed at the rear end, thereby forming stereoscopic vision, and particularly, the camera bellows is stretched into a stable cuboid shape and is a telescopic bracket made of four telescopic tubes like beverage suction tubes, so that the bracket can be contracted by pressing once to enable the viewer to be folded into a notebook size, the carrying is very convenient, and the viewer can be instantly changed into a use state by pulling; the viewer has a very low production cost, and can be used for a large number of people to enjoy stereoscopic video programs in a very cheap and simple manner by combining a stereoscopic vision induction training method provided by another published patent.

Description

Portable partition type viewer for watching left and right format 3D films

Technical Field

The utility model belongs to stereovision imaging technology especially relates to a device that format 3D film can form stereovision about watching.

Background

For a three-dimensional real object, the left eye image and the right eye image respectively seen by the left eye and the right eye have slight difference. People respectively make a left eye image and a right eye image into a left image and a right image of a plane by shooting or drawing, and the left image and the right eye image are spliced together to make a left-right format 3D picture, which is called a left-right picture for short; for such left and right images, by some viewing device, so that the left eye of the viewer can only see the left image and the right eye can only see the right image, stereoscopic vision is formed under appropriate conditions when both eyes view simultaneously.

At present, a lot of websites store a lot of 3D films (including 3D videos and 3D photos) in left and right formats for downloading, and people hopefully enjoy stereoscopic video programs by playing the films through mobile phones. Therefore, the inventor has invented a left and right lens viewer which is a left and right image played on the screen of the mobile phone by the left and right eyes through the left and right lenses respectively; the viewer magnifies the picture of the left and right images with a relatively high magnification, and particularly the design of the lens system has the following effects: the left image virtual image formed by the left lens and the right image virtual image formed by the right lens are basically overlapped or partially overlapped in a plane area surrounded by the contour lines of the left image virtual image and the right image virtual image, so that stereoscopic vision can be easily formed when two eyes watch the images simultaneously. The use of a lens system must take into account its impact on eye health and manufacturing cost issues. The advanced "head-mounted virtual reality glasses" sold on the market today have no impact on the health of the eyes, but its expensive price is not acceptable to everyone; the following serious problems are common to the low-cost left and right lens viewers: due to the high magnification of the lens and the poor imaging quality of the lens, many people can feel dizzy when watching 3D films, the eyes can feel tired even if watching for a long time, and even symptoms such as headache, nausea and the like can be caused, and if watching is carried out frequently, the eyes can be damaged.

Another way to go to the non-lensing technology is to try to see the 3D film played by the phone with a "barrier viewer" that has long been used historically. A partition board is vertically arranged between a left image and a right image, so that two eyes at the other end of the partition board can only see the left image by a left eye and only the right image by a right eye; later, improvements were made to place the left and right panels and the baffle in a "dark box" to reduce the severe interference of external stray light to the stereoscopic vision. Such barrier-type viewers are very inexpensive to manufacture. When the left and right images are watched by the binocular vision viewer, because light rays emitted by the left and right images do not pass through the large-scale transformation of the lens system but directly enter eyes, when stereoscopic vision can be formed, as long as the size of the left and right images is not too large, discomfort such as dizziness, fatigue and the like can not occur even if the left and right images are watched for a long time, researches on binocular vision have proved that the left and right images are often watched by the partition type viewer, the eyes cannot be damaged, and the stereoscopic vision imaging capability of a visual nervous system can be improved. Here, the case of "when stereoscopic vision can be formed" has a problem that a viewer cannot quickly form stereoscopic vision even when viewing a 3D movie with such a viewer.

In the past years, some people produced the baffle type viewer with the camera bellows to be sold on the market aiming at the requirement of playing left and right format 3D films by mobile phones, but the main reasons are that: since the areas of the left image and the right image on the 3D film are separated and no lens system is used to convert the images of the two areas into the overlapped form, when many people use the viewer to view the images, the attempt is repeated, the visible shape image of the left image and the visible shape image of the right image always do not coincide with the plane area enclosed by the contour lines, that is, "plane fusion image" is difficult to realize, stereoscopic vision is difficult to form, and the viewing will be lost when the user cannot find the images for a long time.

In order to solve the above problems, a patent (publication No. 110812149 a) proposes a method for inducing a viewer to have stereoscopic vision by using a special card type slide and an external light source on the viewer, and after several tens of seconds or several minutes of training, most people can quickly make stereoscopic vision when watching a 3D film played by a mobile phone by using a barrier type viewer. The significance of this approach is at least that a large population can experience the enjoyment of 3D video with very inexpensive viewers.

The larger the horizontal length (simply referred to as "single image width") of a single image in two adjacent left and right images is, the more difficult it is to realize planar fusion (and thus form stereoscopic vision); the vertical length of the individual images (referred to simply as the "height of the individual images") has no effect on the formation of stereoscopic vision. After a long period of training, the viewer can still form stereoscopic vision when the single image width is as large as 80 mm, but the single image width must be smaller than the interpupillary distance of two eyes for the viewer to easily and comfortably watch the 3D film for a long time. The interpupillary distance between two eyes of an adult is about 60-65 mm, so the width of a single picture is generally not more than 60 mm, namely the total width of a left picture and a right picture is maximum 120 mm (which is approximately equal to the size of the long edge of a screen of a mobile phone). It should be noted that this does not mean that the viewer sees the stereoscopic image with a viewer having a horizontal dimension of only 60 mm, which is actually much larger than 60 mm. This is based on two factors: (

) The imaging principle and experiment prove that the stereo imaging mode has the amplification effect, namely, the stereo image seen by two eyes is larger than the single image seen by a single eye (1)

) Because the stereoscopic image is not at the position of the left and right images but at a certain distance behind the left and right images, the two eyes can be close to the left and right images on the premise of keeping the viewing comfort. Comparing with the 2D film played by watching the mobile phone: the experiment proves that the picture width of a single picture in the left picture and the right picture of the 3D film is 116/2 = 58 mm, the picture height is 60 mm, the picture width of the 2D film is 116 mm, the picture height is 60 mm, and the two eyes and the seen figure image are protectedOn the premise of keeping the same distance, a stereoscopic image seen by viewing a 3D film with a viewer is 0.7 times or more the width of the former and 1.4 times or more the height of the latter than a stereoscopic image seen by viewing a 2D film with both eyes, and therefore, the product of the width and the height is almost the same. The mobile phone is used for watching the 2D film, although the seen shape and image are much smaller than that of a television and a movie, the 2D film is accepted by the public and becomes a frequent behavior at ordinary times; therefore, under the current situation of the inducement training method for rapidly forming stereoscopic vision, the 3D film played by the mobile phone can be accepted and popular by more and more people by using the barrier viewer.

In order to make the popular thing that 3D movie and television can be enjoyed with little money, a problem needs to be solved: when a 3D film is watched by using a partition type viewer, the distance between eyes and a formed stereo image is as comfortable as the distance between the eyes to read a book, and a dark box of the viewer needs to be made into a box with the length of two to three hundred millimeters, so that the viewer is inconvenient to carry. One such patent has been issued in the past: the camera bellows is made into a telescopic sleeve structure, and is pulled open when in use and is retracted to be half of the original volume when not in use; but this is still not portable enough. It is worth studying how to make the viewer compressible to a small form when not in use, to quickly open the dark box three-dimensional structure when in use, and to make the viewer still inexpensive to manufacture.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a watch baffle type viewer of format 3D film about, it is mainly used for watching the 3D video of cell-phone broadcast, consequently will solve the portable problem when the viewer does not use to still need to make its cost of manufacture very low.

In preparation for describing the technical scheme, the meanings of certain special words and phrases are defined as follows: (

) The term "left-right format 3D movie" refers to not only dynamic left-right format 3D video but also packetsThe method comprises the steps of (1) including static left and right format 3D photos, wherein pictures of the photos are left and right pictures; (

) The 'clapboard type viewer' for viewing left and right format 3D films is provided with a cuboid-shaped camera bellows, the camera bellows is a cuboid box formed by connecting four surrounding cylinders surrounded by four surfaces with front and rear end surfaces, a long strip-shaped clapboard is arranged in the camera bellows, the clapboard is perpendicular to the front and rear end surfaces of the camera bellows and divides the space in the camera bellows into a left part and a right part, the front end surface of the camera bellows is provided with a left observation port and a right observation port, the rear end surface of the camera bellows is provided with a light inlet window for left and right picture brightness, and a device for fixing a mobile phone is connected with the rear end surface, the whole structure meets the following conditions: when the left and right eyes watch the image through the left and right observation ports, the bright light of the left image can be only seen by the left eye, and the bright light of the right image can be only seen by the right eye; (

) Description of orientation: assuming that the front and rear end faces of the viewer are perpendicular to the horizontal plane and the orientation is described from the standpoint of the viewer using the viewer, "horizontal" from left to right, "vertical" from top to bottom, and the rear end face is located behind the front end face and "longitudinal" from front to rear; (

) The 'inner and outer tube sleeve type telescopic tube capable of being locked' has the same structure as a telescopic straw for sucking beverage in general, see patent publication numbers 108888061A, 108836072A, 109106173A and 209377252U, and the structure is generally as follows: the inner tube is inserted into the outer tube, the outer tube is pulled outwards from the inner tube by external force to make the expanding tube head of the inner tube and the reducing tube head of the outer tube closely contact to lock the connection, so that the whole telescopic tube is in the longest state without deformation, and for the telescopic tube in the longest state, the connection between the expanding tube head of the inner tube and the reducing tube head of the outer tube can be released by pressing the inner tube inwards to the outer tube by external force, and then the connection is released, so that the inner tube is inserted into the outer tube, andso that the inner tube slides in the outer tube without friction, thereby achieving the shortest state of the telescopic tube.

The technical scheme of the utility model is following (one) - (six).

(a) a barrier type viewer for viewing left and right format 3D films, characterized in that:

(1) it comprises the following parts: the mobile phone fixing device comprises a four-side enclosing cylinder made of soft cloth materials, a long strip-shaped partition board made of the soft cloth materials, a front end panel with a left observation opening and a right observation opening, a rear end panel with a left bright light entrance window and a right bright light entrance window, two telescopic rectangular supports connected with the front end panel and the rear end panel through rotating shafts and bearings, and a device connected with the rear end panel and used for fixing the mobile phone;

(2) the four-side enclosure is characterized in that two rectangular ports of the four-side enclosure are respectively connected to the front end panel and the rear end panel, and a rectangular area defined by trace lines connected with the end panels and the enclosure is located in the whole end panel area and at the midpoint position, so that the rectangular area is called as a 'dark box end surface area'; when the viewer is in use, the front and the rear two dark box end surface areas D_FAnd D_BThe rectangular box enclosed by the six surfaces of the four-surface enclosure cylinder is a camera bellows of the viewer, and two ends of the strip-shaped partition board are respectively connected to the front end surface and the rear end surface of the camera bellows, so that the space in the camera bellows is divided into a full left part and a full right part;

(3) the telescopic rectangular support has the following structure: two parallel short sides of the rectangular support are two round bar-shaped rotating shafts, and two parallel long sides of the rectangular support are two identical 'locked inner and outer pipe sleeved telescopic pipes'; the inner and outer tube muff-coupling type telescopic tube capable of being locked has the following structure: the inner tube is inserted into the outer tube, the outer tube is pulled outwards from the outer tube by external force, so that the expanded diameter tube head of the inner tube is in close contact with the reduced diameter tube head of the outer tube to lock the connection, the whole telescopic tube is in the longest state without deformation, and for the telescopic tube in the longest state, the external force is used for pressing the inner tube towards the outer tube to release the locked connection between the expanded diameter tube head of the inner tube and the reduced diameter tube head of the outer tube, so that the inner tube slides in the outer tube to achieve the shortest state of the telescopic tube;

(4) two cylindrical bearings are fixed on the back side surface of the front end panel and are respectively positioned in the end surface area D of the camera bellows_FThe outer left and right sides, and the central axis of the cylindrical bearing is parallel to the region D_FLeft and right side lines of (c); two cylindrical bearings are fixed on the front side surface of the rear end panel and are respectively positioned in the end surface area D of the camera bellows_BThe outer left and right sides, and the central axis of the cylindrical bearing is parallel to the region D_BLeft and right side lines of (c); the telescopic rectangular supports are two, two round bar-shaped rotating shafts in the first rectangular support penetrate through the cylindrical bearing fixed on the right side of the rear side surface of the front panel, the other rotating shaft penetrates through the cylindrical bearing fixed on the left side of the front side surface of the rear panel, and the rectangular supports are used as a ring to surround the four-side surrounding tube; the second rectangular bracket is the same as the first rectangular bracket in structure and is the same or different in size, two round bar-shaped rotating shafts in the second rectangular bracket are provided with one rotating shaft which penetrates through a cylindrical bearing fixed on the left side of the rear side surface of the front panel, the other rotating shaft penetrates through a cylindrical bearing fixed on the right side of the front side surface of the rear panel, the rectangular bracket is used as a ring to surround the four-side surrounding barrel, and two extension pipes of the rectangular bracket are not in contact with two extension pipes of the first rectangular bracket; the whole structure meets the following conditions: the front end panel is pulled forwards along the longitudinal direction relative to the immovable rear end panel, so that the soft cloth four-side surrounding cylinders between the front end panel and the rear end panel can be completely opened to form a cuboid dark box, and at the moment, the four telescopic pipes of the two rectangular supports are just in the longest non-deformable state, so that the dark box is stably supported, and the viewer is in a use state;

(5) the viewer in the use state can be folded into a "portable state" in the following manner: the front panel is forced to translate towards the rear panel, which causes the four telescoping tubes of the two rectangular brackets to release the locked connection and shorten, and finally the front and rear panels approach the shortest distance that can be achieved, and the soft cloth four-sided enclosure and the partition board are folded along with the front and rear panels to be in the gap between the two end panels.

(II) according to the barrier type viewer of (I), the means for fixing the mobile phone, which is connected to the rear panel, is one or two elastic bands, both ends of which are connected to the rear panel.

(III) according to the barrier type viewer of (I), the means for fixing the mobile phone, which is connected to the rear panel, is a case for holding the mobile phone, which is integrated with the rear panel.

(IV) according to the barrier type viewer of (I), (II) or (III), the inner surface of the dark box and the surface of the barrier are made black to reduce the light reflection of the surfaces.

And fifthly, according to the partition type viewer (I), (II) or (III), one or two U-shaped cracks are chiseled at the positions, close to the rear panel, on the lower bottom surfaces of the four-side enclosure cylinders, so that fingers can extend into the camera bellows from the holes formed by pulling the tongue-shaped pieces open to control the keys of the mobile phone.

(VI) the barrier type viewer according to (I), (II) or (III), in order to also view 2D movies using the camera's camera bellows, said elongated barrier is constructed to be able to move from the middle position of the camera bellows to the left or right side of the camera bellows, and is constructed as follows: a rectangular window is formed in the front end panel, a light blocking strip is additionally arranged in the center of the rectangular window, the rectangular window is separated by the light blocking strip to form a left observation port and a right observation port, one end of the strip-shaped partition plate is connected with the light blocking strip, the other end of the strip-shaped partition plate is connected with a rigid rod, the light blocking strip is provided with an upper bayonet and a lower bayonet, the upper bayonet and the lower bayonet are clamped at the edge of the rectangular window of the front end panel, the rigid rod is also provided with an upper bayonet and a lower bayonet, the upper bayonet and the lower bayonet are clamped at the edge of the light inlet window of the rear end panel, and the.

The advantageous effects of the technical solution of the present invention will be described below.

The partition plate type viewer provided by the technical scheme can be in a use state only by simply pulling open once when in use, and can be changed into a notebook size only by simply flattening once when not in use, so that the problem of portability when not in use is well solved; also, the cost of making such a barrier-type viewer is obviously quite low.

The following problems are explained with respect to the effect of viewing a 3D film with such a barrier type viewer.

（

) Even if a person who watches a three-dimensional object with normal stereoscopic vision ability usually watches a 3D film by using a partition type viewer, if the person does not conduct induced training, the person can not find the feeling of stereoscopic imaging for a long time, the main reason is that the eyes of the viewer often habitually only watch the left and right picture surfaces, the key point of forming the stereoscopic vision is that the visual nerve needs to be adjusted to watch at a certain distance behind the left and right pictures, but the adjustment of the visual nerve to watch at an invisible position is difficult. To solve this problem, our patent (publication No. 110812149 a) proposes a method for inducing a viewer to generate stereoscopic vision by using a "card type slide with punched left and right images" and an externally-luminous object on the viewer, i.e. the left and right eyes of the viewer are respectively focused on a spot-like light source arranged at a distance from left and right observation ports through left and right peepholes on the left and right images, and the visual fields of both eyes contain the patterns of the left and right images, so that the "planar fusion" can be realized naturally, the stereoscopic vision can be formed, the state of the optic nervous system at this time can be learned in the lower consciousness by practicing "remembering" and then watching the 3D film by using a partition type viewer, and the due state for generating the stereoscopic vision can be automatically entered. Experiments show that after the induced training of dozens of seconds or minutes, most people watch the 3D film played by the mobile phone by using the viewer, and stereoscopic vision can be formed immediately. Therefore, we can install the special ' left and right picture punch card type slide (abbreviated as ' stereoscopic vision training card ') on the rear panel of the viewer as the viewerA component of the viewer, so that the training stereo vision can be induced by the device at any time without inserting a mobile phone. The utility model provides a viewer, the deuterogamy induced training method can make a large amount of people appreciate the three-dimensional film and television program with very low price and simple and convenient mode.

（

) When the viewer of the utility model is used to view the left and right images, the width of each single image in the left and right images is not too large and is generally smaller than the interpupillary distance of two eyes; the reason for this is as follows: the intersection point of two light rays emitted to two eyes by a light spot on the three-dimensional real object is the light spot, if a pair of light spots corresponding to the light spots on the left and right images are made to have a distance larger than the interpupillary distance, the intersection points of the two light rays emitted to the two eyes by the two light spots are positioned behind the brain of an observer, which is different from the situation that the eyes watch the three-dimensional real object, although the vision nervous system still can fuse the pair of light spots into a light spot shape, the called vision nerve imaging mechanism is different from the ordinary mechanism that the eyes watch the three-dimensional real object, the called special mechanism can cause the vision nerve to be quite nervous and tired, and the long-term doing of the vision nerve is possibly not beneficial to the health of the vision. If the left and right images meet the condition that the width of each single image is smaller than the interpupillary distance, two light rays which are respectively emitted to two eyes by two light points corresponding to one light point on a three-dimensional real object in the two patterns of the left and right images are generally intersected at a certain point behind the left and right images by reverse extension lines, a mechanism that the vision spirit forms a light point image by the two light rays which are respectively emitted to the two eyes by the two light points is similar to an imaging mechanism that one light point on the three-dimensional real object is watched by two eyes, therefore, the stereoscopic vision is easier to form, 3D (three-dimensional) videos can be easily watched like watching the three-dimensional real object at ordinary times after the formation, discomfort feelings such as dizziness and the like can be avoided, the health of the vision nerves can not be influenced. When the mobile phone is used for playing the left and right pictures, the width of a single picture is required to be adjusted, and only the width of the single picture is required to be adjusted to be twice of the total width of the left and right pictures, so that a plurality of player software can be used for playing the left and right picturesAn implementation is, for example, a "MX player" downloadable from a website, which can not only arbitrarily scale the screen size without change while maintaining the screen "aspect ratio", but also change the aspect ratio hierarchically. The left and right images are viewed by a viewer for the first time, and in order to easily form stereoscopic vision, the width of a single image can be made smaller (for example, 30-40 mm), and then the width of the single image is gradually increased to approach the interpupillary distance of two eyes.

（

) The problem of the size of the stereoscopic image that can be seen when viewing a 3D film using the viewer is discussed assuming that the width of the single image in the left and right images has been adjusted to 60 mm (not exceeding the interpupillary distance of the eyes), the left and right format 3D films available for download on the web site have a size of 60 mm × 45 mm (meaning that the single image is 60 mm wide and 45 mm high) in the left and right images of the film, the stereoscopic image seen with the viewer will be enlarged by 1.4 times, i.e. the size of the stereoscopic image is 84 mm × 63 mm, which is satisfactory, if the size of the single image is 60 mm wide, the left and right half-width format of the 3D film available for download on the web site is also not a "left and right half-width" format, i.e. the left and right images are compressed in the lateral direction to half of the normal film, if the format is played directly, the stereoscopic image seen is quite large, but the lateral movement of the left and right images is distorted, if the left and right images are not enlarged, which is not a "lateral movement" greatly distorted, which is not a left and right half-width "as a full-width" of the stereoscopic image, which is normally distorted, but is not too much distorted, if the stereoscopic image is enlarged, which is not a serious, and if the left-half-width of the stereoscopic image is enlarged, which is not a left-half-width of the stereoscopic image is enlarged, which is usually cannot be enlarged, but is enlarged, and if the stereoscopic image is enlarged, which is enlarged, and is enlarged, which.

Drawings

Fig. 1 is a schematic structural diagram of a foldable viewer for viewing 3D movies according to the present invention, which shows the viewer in use.

Fig. 2 is a schematic view of a telescopic rectangular support in the viewer.

Fig. 3 is a schematic view of the arrangement of the elastic band for holding the phone at the rear end of the viewer and the stereoscopic training card.

Fig. 4 is a schematic diagram of a design of a stereo vision training card.

Fig. 5 is a schematic view showing the structure of a cellular phone case integrated with a rear panel of a viewer and a stereoscopic vision training card as a rear surface of the case.

Detailed Description

In order to explain the technical solution of the present invention in more detail, the following description is made with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a viewer for watching 3D movies according to the present invention, which shows the viewer in use; as can be seen from the figure, a four-sided soft cloth enclosure 1 having four sides and a soft cloth partition 4 are connected to the front panel 2 and the rear panel 3; a rectangular region D surrounded by the front end of the four-sided enclosure on the front panel 2_FThe inside of the box body is provided with a left observation port 2.1 and a right observation port, and a rectangular area D surrounded by the rear ports of the four-side surrounding cylinders is arranged on the rear panel 3_BThe inside of the light inlet window is provided with a light inlet window 3.1 for lighting left and right pictures; the telescopic rectangular supports 5 are respectively connected to the right side of the rear side of the front end panel 2 and the left side of the front side of the rear end panel 3 through bearings 5.5 and 5.6, the specific structure of the rectangular supports 5 is shown in FIG. 2, the telescopic rectangular supports 6 are also respectively connected to the left side of the rear side of the front end panel 2 and the right side of the front side of the rear end panel 3 through bearings, the two rectangular supports are used as rings and are all surrounded outside the four-side enclosure cylinder, and the rectangular supports 6 are surrounded outside the rectangular supports 5; in addition, there are means for securing the handset in conjunction with the rear panel, see fig. 3 or 5; the whole structure meets the following conditions: relative to the immovable rear end panel, the front end panel is pulled forwards along the longitudinal direction, so that the soft cloth four-side surrounding cylinder between the front end panel and the rear end panel can be completely openedA cuboid camera bellows is formed, and at the moment, the four extension tubes of the two rectangular supports are just in the longest non-deformable state, so that the camera bellows is stably supported, and the viewer is in a use state; the viewer in use can again be folded into a "portable state" as follows: the front panel is pressed to translate towards the rear panel, which causes the four telescopic tubes of the two rectangular supports to be unlocked and shortened so that the two rectangular supports almost rest against the rear panel, at which time the front and rear panels approach the shortest possible distance and the soft four-sided enclosure and the partition are folded over with them into the gap between the two panels.

Fig. 2 shows the structure of the telescopic rectangular support with the rotating shaft-bearing: two parallel long edges of the rectangular bracket 5 are two identical 'locked inner and outer pipe sleeved telescopic pipes'; the upper telescopic pipe is formed by inserting the inner pipe 5.1 into the outer pipe 5.2, the inner pipe is pulled outwards from the outer pipe by external force, so that the expanded diameter pipe head of the inner pipe is tightly contacted with the reduced diameter pipe head of the outer pipe, the connection can be locked, the inner pipe is pressed inwards from the outer pipe by external force, the connection locked between the expanded diameter pipe head of the inner pipe and the reduced diameter pipe head of the outer pipe can be released, and the inner pipe slides in the outer pipe without friction; the "[ shape" structure 5.3 is a rigid body composed of a round bar-shaped rotating shaft and two "connecting rods" connected to both ends of the round bar-shaped rotating shaft and perpendicular to the round bar-shaped rotating shaft, the two connecting rods are respectively and firmly connected to the inner pipes of the two telescopic pipes, the round bar-shaped rotating shaft passes through a cylindrical bearing 5.5, and the bearing 5.5 is fixed on the right side of the rear side surface of the front end panel, as shown in fig. 1; the "] structure 5.4 is similar in structure to the" [ "structure 5.3, its two connecting rods are firmly connected to the outer tubes of the two telescopic tubes, its round rod-shaped rotating shaft passes through the cylindrical bearing 5.6, the bearing 5.6 is fixed on the left side of the front side of the rear panel, as shown in fig. 1; the rectangular bracket 6 is identical in structure to the rectangular bracket 5 but different in size, and two rotating shafts of the rectangular bracket 6 are connected to the remaining two bearings on the front and rear end panels, respectively, see fig. 1.

In order to conveniently install the rectangular bracket on the end plate, the cylindrical bearing fixed on the end plate can be made into a structure which has an axial crack and can elastically deform, the crack is broken off during installation, and the round rod-shaped rotating shaft is embedded into the bearing. In addition, if the longitudinal length of the camera bellows is larger, the telescopic tube can be made into a structure of sleeving three tubes.

Regarding the folding of the viewer, all parts of the soft cloth type four-side surrounding cylinder are almost positioned in the seams of the two end panels after being folded, and do not overflow to a certain extent, because the upper surface and the lower surface of the four-side surrounding cylinder are limited by the cross telescopic pipes, and the vertical dimensions of the left surface and the right surface are not large; can also enclose 1 ~ 3 rectangle rigid circle in the waist embedding of a section of thick bamboo on four sides for the cloth cover after folding is more difficult to spill over the crack of two end panels. When the viewer is folded, the two rectangular supports almost abut against the rear panel, which makes the telescopic tube difficult to extend without large external force, i.e. the folded state of the viewer has self-retaining property, if the state is fixed more firmly, locking measures can be applied to the shortened telescopic tube, for example, a reducing tube section is made at the position of the outer tube corresponding to the expanding tube head of the inner tube.

Major scale parameters of the viewer: the longitudinal length of the camera bellows is about 180-250 mm, which is determined by whether comfortable watching can be realized, and if the camera bellows is short, two eyes are far away from the observation port; the transverse width of the light inlet window on the rear end panel is about 110-130 mm, and the vertical height of the light inlet window is the same as the short edge of the mobile phone screen and about 60-65 mm; the width of the light blocking strip between the two observation ports on the front panel is about 10-30 mm, and the width of the light blocking strip is ensured to prevent the left image from being seen by the right eye and prevent the right image from being seen by the left eye. The dimensions of the rest of the viewer can be deduced from the dominant dimensions parameters.

FIG. 3 is a schematic view of the arrangement of the elastic bands for holding the phone at the rear end of the viewer and the stereoscopic training card; the upper end and the lower end of the elastic bandage 7.1 are provided with rod-shaped buckles 7.1a and 7.1b which can be respectively inserted into buckle holes 7.1c and 7.1d on the rear panel 3 to realize connection; the other elastic strap 7.2 is also connected to the rear panel 3 in this way; the stereoscopic vision training card 8 is tied on the elastic binding bands 7.1 and 7.2, one design of the training card 8 is shown in figure 4, and the training card can be used for performing stereoscopic vision induction training under the condition of not inserting a mobile phone; when watching a 3D movie, a mobile phone is inserted between the back panel and the training card.

Fig. 4 shows a stereovision training card, which is actually a "left and right figure perforated card slide" described in our publication No. 110812149a, the training card 8 being designed to: two patterns corresponding to the three-dimensional object are arranged in the left and right images 8.1 and 8.2, a left peephole 8.3 and a right peephole 8.4 are drilled in the centers of the left and right images 8.1 and 8.2, the area outside the left and right images on the slide is light-proof, light irradiated to the back surface of the slide in the environment is scattered through the left and right images, so that the front surface is provided with light of the left and right images, and a viewer can see the three-dimensional image of the three-dimensional object from the two patterns of the left and right images after induced training. The method for inducing training comprises the following steps: any spot-like light source is found in the environment and kept at a certain distance from the viewer right behind the viewer, so that the spot-like light source can be seen clearly by a single left eye through a left peephole in the center of the left image from a left observation port, and the spot-like light source can be seen clearly by a single right eye through a right peephole in the center of the right image from a right observation port (for example, when the distance between the two peepholes is equal to the distance between the two peepholes)dThe distance from the spot light source to the left and right images is about 2 times of the distance from the eyes to the left and right images when the distance is 40 mm), then the eyes watch the light source at the same time, the two patterns of the left and right images also fall in the visual fields of the eyes, the feeling of stereo imaging can be found, conditioned reflex can be formed after a plurality of exercises, and the viewer can watch the 3D film to generate stereo vision immediately.

Fig. 5 shows another solution for fixing the mobile phone at the rear end of the viewer, namely, the rear panel 3 is a surface, a mobile phone placing box 9 is made, and elastic foam plastic strips 9.1 and 9.2 are adhered to the upper and lower inner walls in the box, so that the mobile phone can be firmly squeezed after being placed; the rear end face of the case is formed as a stereoscopic training card 8, and the design of the training card 8 is shown in fig. 4.

When watching a 3D film, the mobile phone is controlled in the following three ways: the right end of the mobile phone is pulled out to operate the button; stretching hands from the observation port to operate the screen icons of the mobile phone; it is also possible to cut one or two U-shaped slits, such as U-shaped slit 10 shown in fig. 1, on the lower bottom surface of the four-sided surround 1 near the rear panel, and to operate the screen icon of the mobile phone by extending a finger from the hole formed by pulling the tongue into the dark box, wherein the U-shaped slits do not substantially cause light leakage from the dark box, because the viewer's body blocks the light directed to it.

It is also pointed out that veiling glare, other than the bright light of the left and right images, can seriously interfere with the formation of stereoscopic vision and also can make people feel dizzy; therefore, to make the dark box light-tight, the inner surface of the dark box and the surface of the partition plate are made black and roughened to reduce the light reflection of the surfaces; the bright and prominent three-dimensional image can be ensured to be seen only by using a good dark box.

If a dark box is used for watching the 2D film, the picture is brighter and clearer and has a pleasing effect; since the viewer watching the 3D film has an existing camera bellows, the partition plate in the middle of the camera bellows is not made into a structure capable of moving to one side of the camera bellows, so that the camera bellows can be used for watching the 2D film; the structure of the movable partition board is as described in (six) in the technical scheme, as shown in fig. 1, namely, a rectangular window is opened on the front panel, the rectangular window is separated by a light barrier 4.1 to form a left observation port 2.1 and a right observation port, one end of the long strip-shaped partition board 4 is connected with the light barrier 4.1, the other end is connected with a rigid rod 4.2, the light barrier 4.1 is provided with an upper bayonet and a lower bayonet which are clamped at the edge of the rectangular window of the front panel, the rigid rod 4.2 is also provided with an edge of a light inlet window 3.1, and the upper bayonet and the lower bayonet are clamped at the edge of the light inlet window 3.1 on the rear panel, so that the light barrier and the rigid rod can be positioned at the central position.

For the production of the viewer, the following parts can be produced by plastic molding: the front panel and the integrated bearing, the rear panel and the integrated bearing, the mobile phone placing box, the four-side surrounding cylinder and the clapboard of the dark box are made of non-woven fabrics or plastic paper, each part of the telescopic rectangular bracket is made of a beverage straw manufacturing machine, the stereoscopic vision training card is made by a printing method, the elastic bandage is made of a machine for producing 'hand-held ropes', and then the parts are simply assembled to form the viewer; the cost of manufacturing the viewer is relatively low, as long as it is produced on a certain scale.

The technical proposal of the utility model is basically characterized in that the extension of the telescopic bracket is used for supporting the camera bellows enclosed by the soft cloth cylinder enclosure, and the contraction of the bracket is used for realizing the folding of the camera bellows; the above-mentioned embodiments are detailed descriptions of technical solutions, but are not limitations of the protection scope of the present invention, and all equivalent substitutions, similar modifications and the like made under the basic features of the present invention fall within the protection scope of the present invention.

Claims

1. A barrier type viewer for viewing left and right format 3D film, comprising:

(4) two cylindrical bearings are fixed on the back side surface of the front end panel and are respectively positioned in the end surface area D of the camera bellows_FThe outer left and right sides, and the central axis of the cylindrical bearing is parallel to the region D_FLeft and right side lines of (c); two cylindrical bearings are fixed on the front side surface of the rear end panel and are respectively positioned in the end surface area D of the camera bellows_BThe outer left and right sides, and the central axis of the cylindrical bearing is parallel to the region D_BLeft and right side lines of (c); the telescopic rectangular supports are two, two round bar-shaped rotating shafts in the first rectangular support penetrate through the cylindrical bearing fixed on the right side of the rear side surface of the front panel, the other rotating shaft penetrates through the cylindrical bearing fixed on the left side of the front side surface of the rear panel, and the rectangular supports are used as a ring to surround the four-side surrounding tube; the second rectangular bracket is the same as the first rectangular bracket in structure and is the same or different in size, two round bar-shaped rotating shafts in the second rectangular bracket are provided with one rotating shaft which penetrates through a cylindrical bearing fixed on the left side of the rear side surface of the front panel, the other rotating shaft penetrates through a cylindrical bearing fixed on the right side of the front side surface of the rear panel, the rectangular bracket is used as a ring to surround the four-side surrounding barrel, and two extension pipes of the rectangular bracket are not in contact with two extension pipes of the first rectangular bracket; the whole structure meets the following conditions: for the rear end panel that is motionless, pull the front end panel along vertical forward, can make the soft cloth nature four sides surrounding tube between the front and back end panel open completely, form the cuboid camera bellows, and four flexible pipes of two rectangle supports are all in the longest state of indeformable just this moment, are supporting the camera bellows steadily, make the viewer be inA use state;

2. The barrier type viewer of claim 1, wherein: the device which is connected with the rear end panel and used for fixing the mobile phone is one or two elastic bands, and the two ends of each elastic band are connected with the rear end panel.

3. The barrier type viewer of claim 1, wherein: the device which is connected with the rear end panel and used for fixing the mobile phone is a box which is integrated with the rear end panel and used for placing the mobile phone.

4. A barrier type viewer as claimed in claim 1, 2 or 3, wherein: the inner surface of the dark box and the surface of the partition are made black to reduce the light reflection effect of the surfaces.

5. A barrier type viewer as claimed in claim 1, 2 or 3, wherein: one or two U-shaped cracks are chiseled at the position, close to the rear end panel, on the lower bottom surface of the four-side enclosure, so that fingers can extend into the dark box from the holes formed by pulling the tongue-shaped pieces open to control the keys of the mobile phone.

6. A barrier type viewer as claimed in claim 1, 2 or 3, wherein: in order to also be able to view 2D film using the camera's camera bellows, the elongated partition is configured to be moved from the middle position of the camera bellows to the left or right side of the camera bellows, as follows: a rectangular window is formed in the front end panel, a light blocking strip is additionally arranged in the center of the rectangular window, the rectangular window is separated by the light blocking strip to form a left observation port and a right observation port, one end of the strip-shaped partition plate is connected with the light blocking strip, the other end of the strip-shaped partition plate is connected with a rigid rod, the light blocking strip is provided with an upper bayonet and a lower bayonet, the upper bayonet and the lower bayonet are clamped at the edge of the rectangular window of the front end panel, the rigid rod is also provided with an upper bayonet and a lower bayonet, the upper bayonet and the lower bayonet are clamped at the edge of the light inlet window of the rear end panel, and the.