CN115951547A

CN115951547A - Optical mechanism and projection optical machine

Info

Publication number: CN115951547A
Application number: CN202211683783.9A
Authority: CN
Inventors: 张建军
Original assignee: Goertek Optical Technology Co Ltd
Current assignee: Goertek Optical Technology Co Ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-04-11

Abstract

The application discloses an optical mechanism and a projection optical machine, wherein the optical mechanism comprises a shell, an optical element and an adjusting element, and an accommodating space is formed in the shell; the optical element is arranged in the accommodating space; the optical element and the housing have a first gap therebetween in a first direction and a second gap therebetween in a second direction; the adjusting element is arranged on the shell and is abutted against the optical element; the adjusting element applies force to the optical element and can drive the optical element to move in the first direction and the second direction simultaneously.

Description

Optical mechanism and projection optical machine

Technical Field

The present disclosure relates to the field of optical devices, and more particularly, to an optical mechanism and a projection optical machine.

Background

In recent years, with the vigorous development of scientific technology, projection technology has become mature, and projection imaging devices are increasingly widely used in various scenes and are more and more favored by people.

In the use of projection imaging equipment, the problem of dark edges of pictures is often encountered; when solving the problem of dark edges of the picture, the position of a lens in the projection imaging device is often required to be adjusted. In the prior art, the position of the lens in the projection equipment main body is relatively fixed, and the adjustment is very inconvenient.

In view of the above, a new technical solution is needed to solve the above technical problems.

Disclosure of Invention

An object of this application is to provide a new technical solution of an optical mechanism and a projection light machine.

According to a first aspect of the present application, there is provided an optical mechanism comprising:

a housing having a receiving space therein;

an optical element disposed within the accommodation space; the optical element has a first gap in a first direction with the housing and a second gap in a second direction with the housing;

an adjustment element disposed on the housing and abutting the optical element; the adjusting element applies force to the optical element and can drive the optical element to move in the first direction and the second direction simultaneously.

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

Optionally, a direction in which the adjusting element applies the force to the optical element forms an included angle of 45 ° with both the first direction and the second direction.

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

Optionally, the mirror frame has a first inclined plane and a bottom plane, and an extension direction of the first inclined plane forms an acute included angle with both the first direction and the second direction;

the adjusting element comprises a fastener and an elastic piece, the fastener abuts against the first inclined surface, and the elastic piece abuts against the bottom surface.

Optionally, the frame has a receiving groove formed in the bottom surface, the elastic element is partially disposed in the receiving groove, and one end of the elastic element abuts against the bottom of the receiving groove while the other end abuts against the housing.

Optionally, the housing is provided with a boss portion having a second inclined surface, the boss portion being opened at the second inclined surface with a connection through-hole, and a portion of the fastener passes through the connection through-hole and abuts against the first inclined surface.

Optionally, the housing includes a housing and a cover, the housing has a bottom and an opening that are opposite to each other, the cover covers the opening, and the housing and the cover enclose to form the accommodating space;

the boss portion is formed on the cover body, one end of the elastic member abuts against the bottom surface of the mirror frame, and the other end of the elastic member abuts against the inner side of the bottom of the shell.

Optionally, the number of the fasteners and the number of the elastic pieces are both two; the two fasteners are symmetrically arranged, and the two elastic pieces are symmetrically arranged.

According to a second aspect of the present application, there is provided a projection light engine comprising the optical mechanism of the first aspect.

In the optical mechanism provided by the embodiment of the application, the position of the optical element is not fixed, and the optical mechanism can compensate by adjusting the position of the optical element so as to reduce or even solve the problem of dark edges. In addition, because the position of the optical element is usually required to be adjusted in two directions when the dark edge problem occurs, in the embodiment of the present application, the position of the optical element can be adjusted in two directions simultaneously by using one adjusting element, so that the adjusting efficiency is high. To sum up, the optical mechanism provided by the embodiment of the application has the advantages of simple structure, convenience in adjustment, higher adjustment efficiency and lower cost.

Further features of the present application and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which is to be read in connection with the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.

FIG. 1 is an exploded view of an optical mechanism according to an embodiment of the present disclosure;

fig. 2 is a schematic cross-sectional structural diagram of an optical mechanism according to an embodiment of the present application.

Description of reference numerals:

1. an optical mechanism; 10. an optical element; 100. a lens; 101. a mirror frame; 1011. a first inclined surface; 1012. a bottom surface; 1010. a containing groove; 11. a housing; 111. a housing; 112. a cover body; 110. a boss portion; 1101. a second inclined surface; 1100. connecting through holes; 12. an adjustment element; 121. a fastener; 122. an elastic member.

Detailed Description

Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.

Referring to fig. 1-2, according to one embodiment of the present application, there is provided an optical mechanism 1 including a housing 11, an optical element 10, and an adjusting element 12, the housing 11 having a receiving space therein; the optical element 10 is arranged in the accommodating space; a first gap is formed between the optical element 10 and the housing 11 in a first direction, and a second gap is formed between the optical element 10 and the housing 11 in a second direction; the adjusting element 12 is arranged on the housing 11 and is abutted with the optical element 10; the adjustment element 12 applies a force to the optical element 10 and drives the optical element 10 in a first direction and a second direction simultaneously.

In the optical mechanism provided in the embodiment of the present application, the position of the optical element 10 in the accommodating 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 in the first direction and the second direction simultaneously. A first gap between the optical element 10 and the housing 11 in the first direction provides a play margin for movement of the optical element 10 in the first direction, and a second gap between the optical element 10 and the housing 11 in the second direction provides a play margin for movement of the optical element 10 in the second direction; thereby adjusting the position of the optical element 10 in the accommodating 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 to compensate to reduce or even solve the dark-edge problem. Moreover, since the position of the optical element is usually required to be adjusted in two directions when the dark-edge problem occurs, the position of the optical element 10 can be adjusted in two directions simultaneously by one adjusting element 12 in the embodiment of the present application, and therefore the adjustment efficiency is high. To sum up, the optical mechanism provided by the embodiment of the application has the advantages of simple structure, convenience in adjustment, higher adjustment efficiency and lower cost.

In one embodiment, the direction of the force applied by the adjusting element 12 to the optical element 10 is at an acute angle to both the first direction and the second direction.

In this particular example, the force applied by the adjustment member 12 to the optical element 10 may be decomposed into a force in a first direction and a force in a second direction, thereby enabling the adjustment member 12 to drive the optical element 10 to move in the first direction and the second direction simultaneously.

In one embodiment, the direction of the force applied by the adjusting element 12 to the optical element 10 is at an angle of 45 ° to both the first direction and the second direction.

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

Referring to fig. 2, the first direction may be, for example, an X direction in fig. 2, and the second direction may be, for example, a Y direction in fig. 2.

Referring to fig. 1-2, in one embodiment, the optical element 10 includes a lens 100 and a frame 101, the lens 100 is embedded in the frame 101, and the adjusting element 12 abuts against the frame 101.

In this specific example, the lens 100 is supported and protected by the frame 101, and the lens 100 is mounted in the housing space of the housing 11 by the frame 101; the adjustment element 12 abuts on the lens frame 101 to apply an urging force to the lens frame 101, thereby preventing damage to the lens 100. The central axis of the lens 100 extends in the third direction, and the lens 100 may be, for example, a condenser lens.

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

In this particular example, the fastener 121 in the adjustment member 12 is responsible for applying force to the optical element 10 to adjust the position of the optical element 10. Further, since the frame body 101 has the first inclined surface 1011 inclined in both the first direction and the second direction, the fastener 121 abuts on the first inclined surface 1011, and the urging force of the fastener 121 on the optical element 10 has the first component force in the first direction and the second component force in the second direction; further, the extending direction of the first inclined surface 1011 forms an angle of 45 ° with both the first direction and the second direction. The elastic member 122 in the adjusting element 12 plays a role of elastically supporting the optical element 10, and the elastic member 122 is configured to stably support the optical element 10 and provide an elastic margin for the movement of the optical element 10. Alternatively, as shown in fig. 2, the fastener 121 and the elastic member 122 may be disposed at both sides of the lens 100 in the second direction; the fastening member 121 and the elastic member 122 may also be disposed at both sides of the lens 100 in the first direction. Alternatively, the fastening member 121 may be a screw, and the elastic member 122 may be a spring. Furthermore, if the fastening member 121 and the elastic member 122 are arranged along the second direction, the side of the optical element 10 may be provided with a connection member having elasticity, such as foam, in the first direction, so as to improve the stability and sealing performance of the optical mechanism without affecting the movement of the optical element 10. If the fastening member 121 and the elastic member 122 are arranged along the first direction, the same will be said, and the description thereof will be omitted.

Referring to fig. 2, in an embodiment, the frame 101 has a receiving groove 1010 formed at the bottom surface 1012, the elastic element 122 is partially disposed in the receiving groove 1010, and one end of the elastic element 122 abuts against a groove bottom of the receiving groove 1010, and the other end abuts against the housing 11.

In this specific example, the accommodating groove 1010 is provided to facilitate positioning and installation of the elastic member 122, and the accommodating space in the housing 11 can be saved, so that the optical mechanism is more compact.

Referring to fig. 1 to 2, in one embodiment, the housing 11 is provided with a boss portion 110, the boss portion 110 has a second inclined surface 1101, the boss portion 110 has a connection through hole 1100 opened at the second inclined surface 1101, and a portion of the fastening member 121 passes through the connection through hole 1100 and abuts against the first inclined surface 1011.

In this specific example, the boss portion 110 having the second inclined surface 1101 and the connection through-hole 1100 may position and mount the fastener 121. For example, the fastening member 121 is a screw, the shaft 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 out of the connecting through hole 1100.

Referring to fig. 1-2, in one embodiment, the housing 11 includes a casing 111 and a cover 112, the casing 111 has a bottom and an opening opposite to each other, the cover 112 covers the opening, and the casing 111 and the cover 112 enclose the accommodating space; the boss portion 110 is formed on the cover 112, and 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 case 111.

Alternatively, the boss portion 110 is integrally formed on the cover body 112. After the elastic member 122 and the optical element 10 are mounted in the housing 111, the cover 112 is covered, and then the fastener 121 is mounted. The whole optical mechanism is simple and compact in structure and convenient to install.

Referring to fig. 2, in one embodiment, the number of the fastening members 121 and the number of the elastic members 122 are two; two of the fastening members 121 are symmetrically arranged, and two of the elastic members 122 are symmetrically arranged.

In this specific example, referring to fig. 2, the fastening members 121 and the elastic members 122 are arranged in the second direction, while the two fastening members 121 are symmetrically arranged in the first direction, and the two elastic members 122 are also symmetrically arranged in the first direction. The two fasteners 121 are forced separately or together to move the optical element 10. After the position of the optical element 10 is adjusted, the fastener 121 may be fixed by dispensing.

According to another embodiment of the present application, there is provided a projection light engine including the optical mechanism 1 as described above.

The optical projector provided by the embodiment of the present application includes the optical mechanism 1, so that the position of the optical element 10 can be adjusted to solve the problem of dark edges that may occur. The projector optical machine also comprises a prism and a fly-eye lens.

Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present application. The scope of the application is defined by the appended claims.

Claims

1. An optical mechanism, comprising:

a housing (11), wherein the housing (11) is provided with a containing space inside;

an optical element (10), the optical element (10) being disposed within the accommodation space; -a first gap in a first direction between the optical element (10) and the housing (11) and a second gap in a second direction between the optical element (10) and the housing (11);

an adjustment element (12), the adjustment element (12) being arranged in the housing (11) and abutting the optical element (10); the adjustment element (12) applies a force to the optical element (10) and drives the optical element (10) in a first direction and a second direction simultaneously.

2. An optical arrangement according to claim 1, characterized in that the direction in which the adjusting element (12) applies force to the optical element (10) is at an acute angle to both the first and the second direction.

3. Optical mechanism according to claim 2, characterized in that the direction of the force exerted by the adjusting element (12) on the optical element (10) is at an angle of 45 ° to both the first and the second direction.

4. Optical mechanism according to claim 1, characterized in that said optical element (10) comprises a lens (100) and a frame (101), said lens (100) being embedded in said frame (101), said adjusting element (12) being in abutment against said frame (101).

5. The optical mechanism according to claim 4, wherein the lens frame (101) has a first inclined surface (1011) and a bottom surface (1012), and the first inclined surface (1011) extends at an acute angle to both the first direction and the second direction;

the adjusting element (12) comprises a fastener (121) and an elastic piece (122), the fastener (121) abuts against the first inclined surface (1011), and the elastic piece (122) abuts against the bottom surface (1012).

6. The optical mechanism according to claim 5, wherein the lens frame (101) has a receiving groove (1010) formed at the bottom surface (1012), the elastic member (122) is partially 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).

7. The optical mechanism according to claim 5, characterized in that the housing (11) is provided with a boss portion (110), the boss portion (110) having a second inclined face (1101), the boss portion (110) being bored with a connection through-hole (1100) at the second inclined face (1101), a portion of the fastener (121) passing through the connection through-hole (1100) and abutting against the first inclined face (1011).

8. The optical mechanism according to claim 7, wherein the housing (11) includes a casing (111) and a cover (112), the casing (111) has a bottom and an opening opposite to each other, the cover (112) is disposed on the opening, and the casing (111) and the cover (112) enclose the accommodating space;

the boss portion (110) is formed on the cover (112), and 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 case (111).

9. The optical mechanism according to claim 5, wherein the number of the fastening members (121) and the number of the elastic members (122) are two; the two fastening members (121) are symmetrically arranged, and the two elastic members (122) are symmetrically arranged.

10. Projection light engine, characterized in that it comprises an optical mechanism (1) according to any of claims 1-9.