An optical mechanism and a projection optical machine

Abstract

The present application discloses an optical mechanism and a projection optical machine. The optical mechanism includes a housing, an optical element, and an adjusting element. A receiving space is provided inside the housing; the optical element is disposed in the receiving space; a first gap exists between the optical element and the housing in a first direction, and a second gap exists between the optical element and the housing in a second direction; the adjusting element is disposed on the housing and abuts against the optical element; the adjusting element applies a force to the optical element and can drive the optical element to move simultaneously in the first direction and the second direction.

Description

Technical Field

[0001] This application relates to the technical field of optical devices, and more particularly, to an optical mechanism and a projection optical machine. Background Art

[0002] In recent years, with the vigorous development of science and technology, projection technology has become increasingly mature, and projection imaging devices have gradually been widely used in various scenarios and are increasingly favored by people.

[0003] In the use of projection imaging devices, the problem of dark edges often appears in the picture; when solving the problem of dark edges in the picture, it is often necessary to adjust the position of the lens in the projection imaging device. In the prior art, the position of the lens in the projection device body is relatively fixed, and the adjustment is very inconvenient.

[0004] In view of this, it is necessary to propose a new technical solution to solve the above technical problems. Summary of the Invention

[0005] One object of this application is to provide a new technical solution for an optical mechanism and a projection optical machine.

[0006] According to the first aspect of this application, an optical mechanism is provided, and the optical mechanism includes:

[0007] A housing having an accommodation space therein;

[0008] An optical element disposed in the accommodation space; there is a first gap between the optical element and the housing in a first direction, and there is a second gap between the optical element and the housing in a second direction;

[0009] An adjusting element disposed on the housing and in contact with the optical element; the adjusting element applies a force to the optical element and can drive the optical element to move simultaneously in the first direction and the second direction.

[0010] Optionally, the direction in which the adjusting element applies a force to the optical element forms an acute angle with both the first direction and the second direction.

[0011] Optionally, the direction in which the adjusting element applies a force to the optical element forms a 45° angle with both the first direction and the second direction.

[0012] Optionally, the optical element includes a lens and a lens frame, the lens is embedded in the lens frame, and the adjusting element abuts against the lens frame.

[0013] Optionally, the lens frame has a first inclined surface and a bottom surface, and the extending direction of the first inclined surface forms an acute angle with both the first direction and the second direction;

[0014] The adjusting element includes a fastening member and an elastic member. The fastening member abuts against the first inclined surface, and the elastic member abuts against the bottom surface.

[0015] Optionally, the spectacle frame is provided with a receiving groove at the bottom surface. The elastic member is partially disposed in the receiving groove, and one end of the elastic member abuts against the bottom of the receiving groove and the other end abuts against the housing.

[0016] Optionally, the housing is provided with a boss portion. The boss portion has a second inclined surface. The boss portion is provided with a connecting through hole at the second inclined surface. A part of the fastening member passes through the connecting through hole and abuts against the first inclined surface.

[0017] Optionally, the housing includes a housing body and a cover body. The housing body has a bottom portion and an opening portion disposed opposite to each other. The cover body covers the opening portion, and the housing body and the cover body enclose to form the accommodating space;

[0018] The boss portion is formed on the cover body. One end of the elastic member abuts against the bottom surface of the spectacle frame, and the other end abuts against the inner side of the bottom of the housing body.

[0019] Optionally, the number of the fastening members provided and the number of the elastic members provided are both two; the two fastening members are symmetrically arranged, and the two elastic members are symmetrically arranged.

[0020] According to a second aspect of the present application, a projection optical machine is provided. The projection optical machine includes the optical mechanism as described in the first aspect.

[0021] In the optical mechanism provided in the embodiment of the present application, the positions of the optical elements are not fixed, but can be compensated by adjusting the positions of the optical elements to alleviate or even solve the dark edge problem. And, since when the dark edge problem occurs, it is usually necessary to adjust the positions of the optical elements in two directions. In the embodiment of the present application, the positions of the optical elements can be adjusted simultaneously in two directions by one adjusting element. Therefore, the adjustment efficiency is relatively high. In summary, the optical mechanism provided in the embodiment of the present application has a simple structure, is convenient to adjust, has a relatively high adjustment efficiency, and has a relatively low cost.

[0022] Other features and advantages of the present application will become clear through the following detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments of the present application, and together with the description are used to explain the principles of the present application.

[0024] Figure 1The figure shows an exploded structural schematic diagram of an optical mechanism according to an embodiment of the present application;

[0025] Figure 2 The figure shows a cross-sectional structural schematic diagram of an optical mechanism according to an embodiment of the present application.

[0026] Description of the reference numerals:

[0027] 1. Optical mechanism; 10. Optical element; 100. Lens; 101. Frame; 1011. First inclined surface; 1012. Bottom surface; 1010. Accommodating groove; 11. Outer shell; 111. Housing; 112. Cover; 110. Boss portion; 1101. Second inclined surface; 1100. Connecting through hole; 12. Adjusting element; 121. Fastening member; 122. Elastic member. Detailed implementation manners

[0028] Now, various exemplary embodiments of the present application will be described in detail with reference to the accompanying drawings. It should be noted that: Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application.

[0029] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way limits the present application, its application, or its use.

[0030] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification.

[0031] In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0032] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0033] Refer to Figures 1 - 2As shown, according to an embodiment of the present application, an optical mechanism 1 is provided. The optical mechanism includes a housing 11, an optical element 10, and an adjusting element 12. The housing 11 has a receiving space therein; the optical element 10 is disposed in the receiving space; there is a first gap between the optical element 10 and the housing 11 in a first direction, and there is a second gap between the optical element 10 and the housing 11 in a second direction; the adjusting element 12 is disposed on the housing 11 and abuts against the optical element 10; the adjusting element 12 applies a force to the optical element 10 and can drive the optical element 10 to move simultaneously in the first direction and the second direction.

[0034] In the optical mechanism provided by the embodiment of the present application, the position of the optical element 10 in the receiving space of the housing 11 is not fixed, but the position of the optical element 10 can be adjusted by the adjusting element 12, so that the optical element 10 can move simultaneously in the first direction and the second direction. The first gap between the optical element 10 and the housing 11 in the first direction provides a movement margin for the movement of the optical element 10 in the first direction, and the second gap between the optical element 10 and the housing 11 in the second direction provides a movement margin for the movement of the optical element 10 in the second direction; thereby adjusting the position of the optical element 10 in the receiving space of the housing 11. Therefore, if the optical mechanism has a dark edge problem, the position of the optical element 10 can be adjusted by the adjusting element 12 for compensation to alleviate or even solve the dark edge problem. And, since when the dark edge problem occurs, it is usually necessary to adjust the position of the optical element in two directions, in the embodiment of the present application, the position of the optical element 10 can be adjusted simultaneously in two directions by one adjusting element 12, so the adjustment efficiency is relatively high. To sum up, the optical mechanism provided by the embodiment of the present application has a simple structure, is convenient to adjust, has a relatively high adjustment efficiency, and has a relatively low cost.

[0035] In one embodiment, the direction in which the adjusting element 12 applies a force to the optical element 10 forms an acute angle with both the first direction and the second direction.

[0036] In this specific example, the force applied by the adjusting element 12 to the optical element 10 can be decomposed into a force along the first direction and a force along the second direction, so as to realize that the adjusting element 12 drives the optical element 10 to move simultaneously in the first direction and the second direction.

[0037] In one embodiment, the direction in which the adjusting element 12 applies a force to the optical element 10 forms a 45° angle with both the first direction and the second direction.

[0038] In this specific example, the first component force of the force applied by the adjusting element 12 to the optical element 10 along the first direction is equal to the second component force along the second direction, so that the force applied by the adjusting element 12 to the optical element 10 is more uniform, which is beneficial to improving the adjustment effect.

[0039] Referring to Figure 2 as shown, the first direction can be, for example, Figure 2 the X direction in Figure 2 and the second direction can be, for example,

[0040] Referring to Figures 1 - 2 as shown, in one embodiment, the optical element 10 includes a lens 100 and a lens frame 101. The lens 100 is embedded in the lens frame 101, and the adjusting element 12 abuts against the lens frame 101.

[0041] In this specific example, the lens 100 is supported and protected by the lens frame 101, and the lens 100 is installed in the accommodation space of the housing 11 through the lens frame 101; the adjusting element 12 abuts against the lens frame 101 and applies a force to the lens frame 101 to avoid damaging the lens 100. The central axis of the lens 100 extends along the third direction, and the lens 100 can be, for example, a condenser lens.

[0042] Referring to Figures 1 - 2 as shown, in one embodiment, the lens frame 101 has a first inclined surface 1011 and a bottom surface 1012. The extending direction of the first inclined surface 1011 forms an acute angle with both the first direction and the second direction; the adjusting element 12 includes a fastener 121 and an elastic member 122. The fastener 121 abuts against the first inclined surface 1011, and the elastic member 122 abuts against the bottom surface 1012.

[0043] In this specific example, the fastener 121 in the adjusting element 12 is responsible for applying a force to the optical element 10 to adjust the position of the optical element 10. And, since the lens frame 101 has a first inclined surface 1011 that is inclined with respect to both the first direction and the second direction, in this way, when the fastener 121 abuts against the first inclined surface 1011, the force applied by the fastener 121 to the optical element 10 has a first component force along the first direction and a second component force along the second direction; further, the extending direction of the first inclined surface 1011 forms a 45° angle with both the first direction and the second direction. The elastic member 122 in the adjusting element 12 plays an elastic supporting role for the optical element 10. The setting of the elastic member 122 can not only stably support the optical element 10 but also provide an elastic margin for the movement of the optical element 10. Optionally, referring to Figure 2As shown, the fastener 121 and the elastic member 122 can be arranged on both sides of the lens 100 along the second direction; the fastener 121 and the elastic member 122 can also be arranged on both sides of the lens 100 along the first direction. Optionally, the fastener 121 can be a screw, and the elastic member 122 can be a spring. Moreover, if the fastener 121 and the elastic member 122 are arranged along the second direction, then, in the first direction, an elastic connecting member, such as a foam, can also be provided on the side surface of the optical element 10, which can not only improve the stability and sealing performance of the optical mechanism, but also does not affect the movement of the optical element 10. The same is true if the fastener 121 and the elastic member 122 are arranged along the first direction, which will not be elaborated here.

[0044] Referring to Figure 2 As shown, in one embodiment, the frame 101 is provided with a receiving groove 1010 at the bottom surface 1012, a part of the elastic member 122 is disposed in the receiving groove 1010, and one end of the elastic member 122 abuts against the bottom of the receiving groove 1010 and the other end abuts against the housing 11.

[0045] In this specific example, the provision of the receiving groove 1010 can facilitate the positioning and installation of the elastic member 122, and can save the position of the accommodation space in the housing 11, making the structure of the optical mechanism more compact.

[0046] Referring to Figures 1 - 2 As shown, in one embodiment, the housing 11 is provided with a boss portion 110, the boss portion 110 has a second inclined surface 1101, and the boss portion 110 is provided with a connecting through hole 1100 at the second inclined surface 1101, and a part of the fastener 121 passes through the connecting through hole 1100 and abuts against the first inclined surface 1011.

[0047] In this specific example, the boss portion 110 having the second inclined surface 1101 and the connecting through hole 1100 can position and install the fastener 121. For example, if the fastener 121 is a screw, the rod portion of the screw passes through the connecting through hole 1100 and abuts against the first inclined surface 1011 of the frame 101, and the head of the screw is exposed outside the connecting through hole 1100.

[0048] Referring to Figures 1 - 2 As shown, in one embodiment, the housing 11 includes a housing body 111 and a cover body 112, the housing body 111 has a bottom and an opening portion disposed opposite to each other, the cover body 112 covers the opening portion, and the housing body 111 and the cover body 112 enclose the accommodation space; the boss portion 110 is formed on the cover body 112, one end of the elastic member 122 abuts against the bottom surface 1012 of the frame 101, and the other end abuts against the inner bottom of the housing body 111.

[0049] Optionally, the boss portion 110 is integrally formed on the cover 112. After the elastic member 122 and the optical element 10 are installed in the housing 111, the cover 112 is covered, and then the fastener 121 is installed. The structure of the entire optical mechanism is simple and compact, and the installation is convenient.

[0050] Referring to Figure 2 As shown, in one embodiment, the number of the fasteners 121 provided and the number of the elastic members 122 provided are both two; the two fasteners 121 are symmetrically arranged, and the two elastic members 122 are symmetrically arranged.

[0051] In this specific example, referring to Figure 2 As shown, the fastener 121 and the elastic member 122 are arranged along the second direction, and the two fasteners 121 are symmetrically arranged along the first direction, and the two elastic members 122 are also symmetrically arranged along the first direction. By applying forces to the two fasteners 121 separately or together, the purpose of moving the optical element 10 is achieved. After the position of the optical element 10 is adjusted, the fastener 121 can be fixed by dispensing glue.

[0052] According to another embodiment of the present application, a projection optical machine is provided, and the projection optical machine includes the optical mechanism 1 as described above.

[0053] Since the projection optical machine provided by the embodiment of the present application includes the above optical mechanism 1, it can solve the possible dark edge problem by adjusting the position of the optical element 10. A prism and a fly-eye lens may also be included in the projection optical machine.

[0054] Although some specific embodiments of the present application have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. An optical mechanism, characterized in that, The optical mechanism includes: A housing (11) having an accommodation space therein; An optical element (10) disposed in the accommodation space; there is a first gap between the optical element (10) and the housing (11) in a first direction, and there is a second gap between the optical element (10) and the housing (11) in a second direction; An adjustment element (12) disposed on the housing (11) and in contact with the optical element (10); the adjustment element (12) applies a force to the optical element (10) and can drive the optical element (10) to move simultaneously in the first direction and the second direction; The optical element (10) includes a lens (100) and a lens frame (101), the lens (100) is embedded in the lens frame (101), and the adjustment element (12) abuts against the lens frame (101); The lens frame (101) has a first inclined surface (1011), and the extending direction of the first inclined surface (1011) forms an acute angle with both the first direction and the second direction. The adjustment element (12) includes a fastener (121), and the fastener (121) abuts against the first inclined surface (1011).

2. The optical mechanism according to claim 1, characterized in that, The direction in which the adjustment element (12) applies a force to the optical element (10) forms an acute angle with both the first direction and the second direction.

3. The optical mechanism according to claim 2, characterized in that, The direction in which the adjustment element (12) applies a force to the optical element (10) forms a 45° angle with both the first direction and the second direction.

4. The optical mechanism according to claim 1, characterized in that, The lens frame (101) has a bottom surface (1012); The adjustment element (12) includes an elastic member (122), and the elastic member (122) abuts against the bottom surface (1012).

5. The optical mechanism according to claim 4, wherein The lens frame (101) is provided with a receiving groove (1010) at the bottom surface (1012), a part of the elastic member (122) is disposed in the receiving groove (1010), and one end of the elastic member (122) abuts against the bottom of the receiving groove (1010) and the other end abuts against the housing (11).

6. The optical mechanism according to claim 4, characterized in that The housing (11) is provided with a boss portion (110), the boss portion (110) has a second inclined surface (1101), and the boss portion (110) is provided with a connection through hole (1100) at the second inclined surface (1101). A part of the fastener (121) passes through the connection through hole (1100) and abuts against the first inclined surface (1011).

7. The optical mechanism according to claim 6, characterized in that, The housing (11) includes a housing body (111) and a cover body (112). The housing body (111) has a bottom portion and an opening portion disposed opposite to each other. The cover body (112) covers the opening portion, and the housing body (111) and the cover body (112) enclose to form the accommodation space; The boss portion (110) is formed on the cover body (112), one end of the elastic member (122) abuts against the bottom surface (1012) of the lens frame (101), and the other end abuts against the inner side of the bottom of the housing body (111).

8. The optical mechanism according to claim 4, wherein The number of the provided fasteners (121) and the number of the provided elastic members (122) are both two; the two fasteners (121) are symmetrically arranged, and the two elastic members (122) are symmetrically arranged.

9. A projection optical machine, characterized in that, The projection optical machine includes the optical mechanism (1) as described in any one of claims 1-8.

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