Projection device

Abstract

The utility model provides a projection device, comprising a projection host, a housing of the projection host is provided with an opening, and the opening corresponds to a light emitting side of a lens in the projection host; the fixed seat is provided with a first end and a second end which are opposite to each other, a hollow light-transmitting cylinder is formed between the first end and the second end, and the light-transmitting cylinder corresponds to the opening; wherein the first end extends into the opening and is in limiting fit with the outer edge of the lens so as to limit the displacement of the lens; the second end is connected with the opening of the shell; and the dimming element is detachably arranged at the second end, and the dimming element corresponds to the light transmission barrel and is used for adjusting the attribute of the light beam emitted from the lens.

Description

TECHNICAL FIELD

[0001] The utility model relates to projection technology field especially suitable for motion platform (such as airplane driving simulation cabin) and dark field situation's projection device. BACKGROUND

[0002] In motion platform, such as flight simulation cabin, ship simulation cabin etc., projection device needs to keep picture stable under dynamic environment (for example, simulation real flight in the heave, steering etc. dynamic action) to provide immersive experience. And, different situation requires different projection effect, and the requirement of projection picture brightness is lower in dark field situation.

[0003] However, the conventional projector lens is only fixed in the shell through thread or buckle, and displacement occurs easily under dynamic environment, resulting in picture shaking, ghosting or even optical parameter deviation, and further affecting the authenticity of simulation training. And the conventional projector cannot adjust output beam properties (such as brightness, polarization state) according to requirements, for example, in dark field situation, too high light intensity will reduce contrast, and dark details are covered, and further affect simulation training and immersive experience.

[0004] Therefore, it is necessary to design a new type of projection device to improve the above defects. UTILITY MODEL CONTENT

[0005] The utility model discloses a projection device, and the first end of the fixing seat is in abutting contact with the outer edge of the lens, and the second end is connected with the shell, so that the lens stability can be improved to avoid displacement, and the lens deviation problem under dynamic environment can be overcome. In addition, a light adjusting element is detachably arranged on the second end, so that the output beam properties can be adjusted according to requirements, and the projection device is suitable for motion platform (such as flight simulation cabin) and dark field low light requirement, and dynamic immersive display can be realized.

[0006] To achieve the above purpose, the utility model provides a projection device, which comprises a projection host computer, and the shell of the projection host computer is provided with an opening corresponding to the light exit side of the lens in the projection host computer.

[0007] A fixing seat has opposite first and second ends, and a hollow light passing barrel is formed between the first and second ends, and the light passing barrel corresponds to the opening. The first end extends into the opening and is limited in position with the outer edge of the lens to limit the displacement of the lens. The second end is connected with the opening of the shell. And,

[0008] A light adjusting element is detachably arranged on the second end, and the light adjusting element corresponds to the light passing barrel and is used for adjusting the beam properties of the light emitted from the lens.

[0009] Preferably, the light passing barrel extends along the optical axis direction of the lens.

[0010] Preferably, the second end is provided with a slot having an insertion opening; wherein the light adjusting element is inserted into the slot from the insertion opening.

[0011] Preferably, a first locking hole is arranged at the insertion opening, and the extending direction of the first locking hole is perpendicular to the extending direction of the slot.

[0012] A locking member is detachably arranged in the first locking hole, and when the locking member is operated to pass through the first locking hole at the insertion opening, the locking member is partially inserted into the insertion opening to prevent the light adjusting element from being taken out of the slot.

[0013] Preferably, the locking member in the insertion opening is in clearance fit with the side surface of the light adjusting element close to the insertion opening.

[0014] Preferably, a plurality of locking members and a plurality of first locking holes are arranged, the plurality of first locking holes are uniformly arranged on the circumferential side of the second end, and the opening of the shell is provided with a plurality of second locking holes corresponding to the first locking holes.

[0015] Wherein, each locking member is operated to pass through each first locking hole and the corresponding second locking hole, so that the fixing seat and the shell are fixedly connected.

[0016] Preferably, the light adjusting element is a filter to adjust the light intensity output by the lens.

[0017] Preferably, the light adjusting element is a polarizer to polarize the light beam emitted by the lens.

[0018] Preferably, a gasket is arranged on the first end, and the gasket is in elastic abutting contact with the outer edge of the lens.

[0019] Preferably, the gasket is a silica gel gasket.

[0020] Compared with the prior art, the projection device provided by the utility model can avoid the displacement of the lens in the moving environment, avoid the problems of optical axis deviation, picture jitter and the like caused by the deviation of the lens in the dynamic environment, and can adjust the output light beam properties (such as brightness, polarization state and the like) according to the requirements, and realize the optical stability and light beam property adjustment. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a partial explosion structure schematic view of the projection device of one embodiment of the utility model;

[0022] Figure 2 It is a structure schematic view of the fixing seat of one embodiment of the utility model;

[0023] Figure 3 For Figure 2 The rear view structure schematic diagram of the fixed seat. DETAILED DESCRIPTION

[0024] In order to make the purpose, structure, characteristics and functions of the utility model have further understanding, detailed description is as follows with examples.

[0025] In the description and claims, some words are used to refer to specific elements. Those skilled in the art should understand that manufacturers can use different names to refer to the same element. The description and claims of this specification do not distinguish elements by name difference, but by functional difference. In the description and claims throughout the specification, "including" is an open term, which should be interpreted as "including but not limited to".

[0026] Please see Figures 1-3 , Figure 1 The partial explosion schematic diagram of the projection device of an embodiment of the utility model, Figure 2 The structure schematic diagram of the fixed seat 2 of an embodiment of the utility model, Figure 3 For Figure 2 The rear view of the fixed seat 2.

[0027] The projection device includes a projection host 1 Figure 1 The appearance of the projection host 1 shown is only an example, and the utility model is not limited to this), a fixed seat 2 and a light adjusting element 3. The front side of the shell 10 of the projection host 1 is provided with an opening 11. The lens is mounted on the light engine module (not shown) inside the shell 10 of the projection host 1. The position of the opening 11 corresponds to the light exit side of the lens, and the size of the opening 11 is greater than the outer diameter of the lens. Figure 2 As shown in the figure, the fixed seat 2 includes opposite first end 21 and second end 22. The hollow light passing barrel 23 is formed between the first end 21 and the second end 22, and the light passing barrel 23 corresponds to the opening 11 on the shell 10. The first end 21 of the fixed seat 2 extends into the opening 11 of the shell 10 and is in abutting cooperation with the outer edge of the lens. The second end 22 of the fixed seat 2 is connected at the opening 11 of the shell 10, thereby limiting the displacement of the lens and overcoming the lens deviation problem of the projection device in a dynamic environment, avoiding picture shaking caused by light beam deviation. In addition, the light adjusting element 3 is detachably arranged on the second end 22 of the fixed seat 2. The light adjusting element 3 corresponds to the light passing barrel 23, thereby effectively adjusting the light beam properties emitted from the lens. The projection device proposed by the utility model can be applied to a motion platform (such as a flight simulation cabin) and dark field low light demand, and dynamic immersive display is realized.

[0028] As Figure 2As shown, in one embodiment, the first end 21 has a first opening, the second end 22 has a second opening, the size of the first opening is less than or equal to the size of the second opening, and the first and second openings are communicated through the light guide tube 23. The light guide tube 23 extends along the optical axis of the lens and has a guide surface S, which enables the light beam emitted from the lens to pass through the light guide tube 23 without obstruction, and at the same time, the structure of the guide surface S enhances the structural strength of the fixing seat 2 and reduces the probability of deformation caused by external impact.

[0029] In one embodiment, the second end 22 of the fixing seat 2 is provided with a slot 24, which extends in a direction intersecting the optical axis of the lens. The width of the slot 24 is preferably matched with the thickness of the dimming element 3. The slot 24 has an insertion opening, which is exposed to the shell 10 of the projection host 1, so as to facilitate the insertion of the dimming element 3 into the slot 24 in the direction of the arrow A (as shown). Figure 2 After the dimming element 3 is inserted into the slot 24, it is located in the optical path, and the slot 24 does not cause obstruction and does not affect the emission of the light beam. Through the structure of the slot 24 of the second end 22 of the fixing seat 2, the dimming element 3 can be quickly inserted and replaced, and the properties of the light beam emitted from the lens can be effectively adjusted.

[0030] Further, referring to Figure 1 the outer wall of the insertion opening of the slot 24 is provided with a first locking hole 25', which extends in a direction perpendicular to the extension direction of the slot 24, and a locking member 4 is detachably arranged in the first locking hole 25'. When the dimming element 3 is completely inserted into the slot 24, the locking member 4 is operated to pass through the first locking hole 25' of the insertion opening, and part of the locking member 4 is embedded into the path space of the insertion opening to prevent the dimming element 3 from being pulled out of the slot 24 in a dynamic scene. In addition, preferably, the locking member 4 in the insertion opening and the side surface of the dimming element 3 close to the insertion opening are gap-fitted (for example, a gap of 0.1-0.3mm, but the present application is not limited thereto), which prevents the dimming element 3 from being pulled out and further avoids the stress concentration or optical distortion caused by the direct action of the locking force on the surface of the optical element.

[0031] In one of the embodiments, the first locking holes 25 are provided in plurality and uniformly distributed on the circumferential side of the second end 22, and the opening 11 of the shell 10 is provided with second locking holes 12 corresponding to the first locking holes 25, and the locking members 4 are provided in plurality and each locking member 4 is arranged to pass through the first locking hole 25 and the corresponding second locking hole 12, so that the fixed seat 2 is stably connected with the shell 10 and the fixed seat 2 is prevented from loosening in vibration. As described above, one of the first locking holes 25 is arranged at the entrance of the slot 24, and the locking member 4 corresponding to the first locking hole 25 can simultaneously limit the light adjusting element 3 and connect the shell 10, so that the structure is simplified and the assembly efficiency is improved. In addition, in some possible embodiments, the first locking hole 25 and the second locking hole 12 are, for example, screw holes, and the locking member 4 is, for example, a bolt matched with the screw hole; or the locking member 4 is clamped with the first locking hole 25 and the second locking hole 12; or the locking member 4 is riveted with the first locking hole 25 and the second locking hole 12, and the utility model is not limited thereto.

[0032] In one of the embodiments, the light adjusting element 3 is a filter, and in a dark field situation, the filter can absorb part of the light intensity to reduce the output brightness, improve the picture contrast, and improve the display. In actual use, the light transmittance of the filter can be adjusted as required to be suitable for various dark field situations. In addition, in a scene requiring polarization light splitting (such as 3D projection), the light adjusting element 3 can be a polaroid to allow light of a specific polarization direction to pass through to achieve special display effects. The light adjusting element 3 in the utility model can be replaced as required to adapt to the needs of flight simulation, vehicle-mounted HUD, cinema-level 3D projection and other multi-scene requirements, and is not limited to filters and polaroids.

[0033] In one of the embodiments, the first end 21 of the fixed seat 2 is provided with an annular groove for mounting a silica gel gasket 26. In actual use, the thickness size and shape of the silica gel gasket 26 can be selected as required, and the gasket 26 is elastically pressed in contact with the outer edge of the lens to suppress the displacement of the lens and absorb vibration energy.

[0034] In summary, the projection device provided by the utility model is elastically pressed and matched with the outer edge of the lens at the first end 21 of the fixed seat 2 and is locked and connected with the shell 10 at the second end 22, so as to limit the displacement of the lens, overcome the lens deviation problem in a dynamic environment, and effectively avoid the problems of picture shaking and ghosting. The second end 22 of the fixed seat 2 is detachably provided with a light adjusting element 3 (such as a filter), which can adjust the properties of the light beam emitted from the lens, can be suitable for projection environments of motion platforms (such as flight simulation cabins) and dark field low light requirements, and can realize dynamic immersive display.

[0035] The utility model has been described by the above related embodiments, however the above embodiment is only the example of implementing the utility model. It must be pointed out that the disclosed embodiment does not limit the scope of the utility model. On the contrary, the change and the decoration made without departing from the spirit and scope of the utility model all belong to the patent protection scope of the utility model.

Claims

1. A projection device, characterized in that, include: A projector host, the housing of which has an opening corresponding to the light-emitting side of the lens inside the projector host; A mounting base has opposing first and second ends, with a hollow light-transmitting tube formed between the first and second ends, the light-transmitting tube corresponding to an opening; wherein the first end extends into the opening and engages with the outer edge of the lens to limit lens displacement; the second end connects to the opening of the housing; and, A dimming element is detachably disposed at the second end. The dimming element corresponds to the light-transmitting tube and is used to adjust the properties of the light beam emitted from the lens.

2. The projection device as described in claim 1, characterized in that, The light tube extends along the optical axis of the lens.

3. The projection device as described in claim 1, characterized in that, The second end is provided with a slot having an insertion port; wherein the dimming element is inserted into the slot through the insertion port.

4. The projection device as described in claim 3, characterized in that, The insertion port is provided with a first locking hole, the extension direction of which is perpendicular to the extension direction of the slot; A locking accessory is detachably provided in the first locking hole. When the locking accessory is operated to pass through the first locking hole at the insertion port, the locking accessory is partially embedded in the insertion port to prevent the dimming element from coming out of the slot.

5. The projection device as described in claim 4, characterized in that, The locking accessory inside the insertion port is clearance-fitted with the dimming element on one side near the insertion port.

6. The projection device as claimed in claim 4, characterized in that, The lock accessory and the first locking hole are both multiple, and the multiple first locking holes are evenly distributed on the periphery of the second end; and the opening of the housing is provided with multiple second locking holes corresponding to the first locking holes; The locking accessory is operated to pass through the first locking hole and the corresponding second locking hole, so that the fixing seat is fixedly connected to the housing.

7. The projection device as claimed in claim 1, characterized in that, The dimming element is a filter used to adjust the light intensity output by the lens.

8. The projection device as claimed in claim 1, characterized in that, The dimming element is a polarizer used to polarize and split the light beam emitted from the lens.

9. The projection device as claimed in claim 1, characterized in that, A gasket is provided on the first end, and the gasket makes elastic pressing contact with the outer edge of the lens.

10. The projection device as claimed in claim 9, characterized in that, The gasket is a silicone gasket.

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