CN204188883U - Display device and FPV equipment - Google Patents

Abstract

The utility model discloses a kind of display device and FPV equipment.This display device comprises a display screen and two optical systems, and this display screen is for playing an image, and the optical axis of these two optical systems does not overlap, and these two optical systems are respectively used to amplify this image.Display device of the present utility model and FPV equipment by arrange two overlap independently optical system for watching the image of same display screen, make display screen can have relatively large size i.e. preferably performance parameter, and this two overlaps independently optical system when making eyes watch simultaneously, two pictures seen separately more easily overlap naturally, significantly improve viewing effect and the experience of user in the mode of low cost.

Description

Display device and FPV equipment

technical field

The utility model relates to a display device and FPV equipment.

Background technique

As the demand for small display devices (such as head-mounted personal theaters, aerial photography of small aircrafts, first-person perspective remote-controlled piloted aircraft models, etc.) has risen sharply, there are more and more such products on the market.

Although the current household flat-panel TV screens have generally achieved excellent performance such as high definition and high color saturation, for small display devices, the actual viewing effect and viewing experience of the virtual large-screen display are far inferior to those of ordinary household flat-panel TVs. television.

These small display devices can be broadly classified into two categories, most of which adopt the first method described below. In the first type of method, two ultra-small display screens are used, and through two independent optical magnifying lenses, they are respectively viewed by human eyes and combined into one image. This type of device is limited to the weight and volume of the whole device due to the need to use two sets of display screens and optical systems, and the size of the display screen is very small (usually difficult to reach a size of 1 inch and above). The small size of the display screen makes it difficult for the main performance of the display screen to reach a high standard, and its actual viewing effect is far inferior to that of a household flat-panel TV. very high.

The second type of mode is to adopt a much larger display screen and a simple magnifying glass relative to the display screen in the first type of mode, wherein the magnifying glass mostly adopts Fresnel prism magnifying glass. In this way, the display screen itself can have better performance (such as clarity and color saturation), but since the positions of the images viewed by the two eyes are difficult to overlap naturally when the two eyes watch at the same time, the viewer must work very hard to adjust the display screen. Two eyes can barely make the pictures seen by the two eyes overlap, which is very easy to cause eye fatigue problems, especially during the long-term viewing process, it may even cause the viewer to experience dizziness, vertigo and other discomfort. Moreover, such a magnifying glass setting will greatly reduce the image quality displayed on the screen itself while enlarging the image.

Utility model content

The technical problem to be solved by the utility model is to overcome the problem that the display screen of the small display device in the prior art is too small so the display effect is not good and the cost is high, or it is difficult to make the pictures seen by the two eyes overlap when viewing with both eyes at the same time, which is very easy To solve the problem of eye fatigue and thus poor viewing effect and experience, a display device and FPV equipment are proposed.

The utility model solves the problems of the technologies described above through the following technical solutions:

The utility model provides a display device, which is characterized in that it comprises a display screen and two optical systems, the display screen is used to play an image, the optical axes of the two optical systems do not overlap, and the two optical systems are respectively Used to enlarge the image.

The display device of the present invention adopts the design idea that one display screen corresponds to two optical systems for zooming in images. On the one hand, due to the constraints of the external conditions of the same equipment shape, volume, and weight, the setting of a single display screen can make it relatively larger in size and better in performance. On the other hand, the two independent optical systems are very beneficial for the user to watch images with both eyes at the same time, and make it relatively easier for the images viewed by the two eyes to overlap. This advantage is particularly obvious when the display device adopts a short-focus magnifying glass to utilize the visual effect of a virtual super-large screen on a small-sized screen, and the reduction of the cross-section of the optical system does not have a significant impact on the performance of the optical system therein. Therefore, the display device of the present invention has a remarkable effect in terms of display effect, especially in improving eye fatigue caused by overlapping two eyes of a user watching images.

Preferably, each optical system includes a set of magnifying glasses, and each set of magnifying glasses is composed of one or more lenses.

Preferably, the optical axes of the two groups of magnifying glasses are not parallel to each other.

There is a certain distance between the eyes of people (that is, the interpupillary distance), so when the two eyes watch the same point of the picture, their viewing angles are not the same. When watching a picture indirectly through the optical system, the viewing angle and line of sight of both eyes are also related to the direction of the optical axis of the optical system, but the angle between the lines of sight of the two eyes is different from the angle of the optical axis. In the display device, the optical axes are not parallel to each other, that is, the design that the optical axes in the two optical systems have a certain angle can help the user's eyes to obtain a naturally overlapping screen image, or at least benefit the user's eyes. The respective resulting screen images can be superimposed more easily.

Preferably, the included angle between the optical axes of the two groups of magnifying glasses is greater than 0 degrees and less than 60 degrees.

Preferably, the angle between the optical axes of the two groups of magnifying glasses is greater than 5 degrees and less than 30 degrees.

Preferably, the light path of each optical system is reflected by at least one plane mirror. The setting of the plane mirror can flexibly change the position and spatial layout of the optical system and the screen, so that the device as a whole can better meet the requirements of space distribution, structural setting, counterweight and other aspects.

Preferably, one of the magnifying glasses included in each set of magnifying glasses serves as an eyepiece.

Preferably, the magnifying glass adopts a Fresnel lens.

Preferably, the display device includes a barrel-shaped frame, and the barrel-shaped frame is used to cover the border of the display screen. The barrel frame itself has a slightly convex curvature on each side. For the image viewed by the magnifying glass with a short focal length, it will be slightly pincushion-shaped at the edge of the image. The barrel-shaped frame is used to cover the border of the display screen, which can offset the pincushion-shaped frame produced by the magnification to a certain extent, thus improving the visual effect. Revert to a flat border on the top.

The utility model also provides an FPV device, which includes the above-mentioned display device, wherein the image is an FPV image. FPV is the abbreviation of First Person View in English, that is, "first-person perspective", which can be realized based on remote control aviation models or vehicle models with wireless camera return equipment.

On the basis of conforming to common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain the preferred examples of the present utility model.

The positive progress effect of the utility model is that the display device and the FPV equipment of the utility model are used to watch images of the same display screen by setting two sets of independent optical systems, so that the display screen can have a relatively large size, that is, better performance parameters, and these two sets of independent optical systems make it easier and more natural for the images seen by the two eyes to overlap when watching at the same time, which significantly improves the user's viewing effect and experience at low cost.

Description of drawings

FIG. 1 is a schematic diagram of a display device according to Embodiment 1 of the present invention.

FIG. 2 is a schematic diagram of a display device according to Embodiment 2 of the present invention.

FIG. 3 is a schematic diagram of a magnifying glass used in the display device of Embodiment 1-3 of the present invention.

Detailed ways

The preferred embodiments of the utility model are given below in conjunction with the accompanying drawings to describe the technical solution of the utility model in detail, but the utility model is not limited to the scope of the embodiments.

Example 1

1, the display device of this embodiment includes a display screen 2 and two optical systems, the display screen 2 is used to play an image, the optical axes of the two optical systems do not coincide, and the two optical systems are used to zoom in on the image respectively. The display screen is a 5-inch display screen. Each optical system includes a group of magnifying glasses, each group of magnifying glasses includes a piece of magnifying glass 1, and the optical axes of the two pieces of magnifying glass 1 are not parallel to each other.

In this embodiment, the optical axes of the two magnifying glasses form an included angle of 20°. The setting of the two magnifying glasses is generally adapted to the interpupillary distance of people. FIG. 1 schematically shows the eyes 4 of the user or viewer. The distance between the two magnifying glasses and the angle between the optical axes can help the eyes 4 of the user to more easily obtain screen images that overlap naturally. Fig. 1 also schematically shows a large screen 3 virtualized by a magnifying glass. It should be understood that the large screen 3 should actually greatly exceed the size of the display screen 2 , and FIG. 3 is only a schematic illustration of the principle of the present invention.

The display device in this embodiment further includes a barrel-shaped frame, and the barrel-shaped frame is used to cover the border of the display screen. The barrel frame itself has a slightly convex curvature on each side. The barrel-shaped frame is used to cover the border of the display screen, which can offset the pincushion shape of the frame produced by the magnifying glass to a certain extent, so that the visual effect can be restored to a straight frame.

Example 2

Referring to Fig. 2, compared with the display device of Embodiment 1, the display device of this embodiment differs only in that each optical system also includes two plane mirrors 5, and the plane mirror 5 is arranged on the display screen and the plane mirror 5 in the optical path. Group between magnifying glasses. The setting of the plane mirror is used for the position and spatial layout of the optical system and the screen, so that the device as a whole can better meet the requirements of space distribution, structural setting, counterweight and other aspects. Each group of magnifying glasses is composed of one or more lenses.

Example 3

The FPV device of this embodiment includes the display device of Embodiment 1, wherein the image is an FPV image. The FPV image is sent by the wireless camera return device installed on the remote control aircraft model.

Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present utility model, but these changes and modifications all fall within the protection scope of the present utility model.

Claims (10)

1. a display device, is characterized in that, comprise a display screen and two optical systems, this display screen is for playing an image, and the optical axis of these two optical systems does not overlap, and these two optical systems are respectively used to amplify this image.

2. display device as claimed in claim 1, it is characterized in that, each optical system includes one group of magnifier, often organizes magnifier and is made up of one or more pieces lens.

3. display device as claimed in claim 2, it is characterized in that, the optical axis of two groups of magnifieres is not parallel to each other mutually.

4. display device as claimed in claim 3, it is characterized in that, the angle of the optical axis of these two groups of magnifieres is greater than 0 degree and is less than 60 degree.

5. display device as claimed in claim 4, it is characterized in that, the angle of the optical axis of these two groups of magnifieres is greater than 5 degree and is less than 30 degree.

6. display device as claimed in claim 2, it is characterized in that, the light path of each optical system is at least through a flat mirror reflects.

7. display device as claimed in claim 2, is characterized in that, has a magnifier as eyepiece in the magnifier that often group magnifier comprises.

8. display device as claimed in claim 2, is characterized in that, magnifier adopts Fresnel Lenses.

9. as the display device in claim 1-8 as described in any one, it is characterized in that, this display device comprises a barrel-shaped frame, and this barrel-shaped frame is for hiding the border of this display screen.

10. a FPV equipment, is characterized in that, comprises as the display device in claim 1-9 as described in any one, and this image is FPV image.