CN102540654A - Projector and adjusting module - Google Patents

Abstract

A projector and an adjusting module are provided, the projector comprises a light base, a lens and at least one adjusting module. The lens is configured on the optical base. The adjusting module comprises a shell, an adjusting element, a rotating element, a screw rod and an elastic element. The shell is fixed on the lens and provided with an opening. The adjusting element is arranged on the shell. The rotating element is arranged on the shell and coupled with the adjusting element. The rotating element is provided with a screw hole. The shell is positioned between the optical base and the rotating element. The screw rod is fixed on the light machine base. The screw rod passes through the opening and is screwed in the screw hole. The elastic piece is supported between the optical machine base and the shell. When the adjusting element drives the rotating element to rotate and move along the screw rod to the optical machine base, the rotating element resists the elastic force of the elastic piece to push the shell to the optical machine base. When the adjusting element drives the rotating element to rotate and move away from the light base along the screw rod, the elastic element releases the elastic potential energy to push the shell away from the light base.

Description

Projector and adjustment module

【Technical field】

The present invention relates to a projection device and its adjustment module, and in particular to a projector and its adjustment module.

【Background technique】

A projector is a display device used to produce large-scale images. The imaging principle of the projector is to convert the illumination beam generated by the light source module into an image beam through the light valve, and then project the image beam onto the screen or wall through the lens to form an image. With the advancement of projection technology and the reduction of manufacturing costs, the use of projectors has gradually expanded from commercial use to home use.

When producing projectors, each projector needs to adjust the lens position to make the back focus (Back focallength) position correct. At present, in the production line of manufacturing projectors, it is common to adjust the rear focus position of the projector lens by means of gaskets or attaching polyester films (mylar). Since the lens back focus of each projector on the production line needs to be adjusted, the above-mentioned method of attaching the gasket or the polyester film will cause waste of materials and man-hours.

China Taiwan Patent No. TW I312098 discloses a lens module with an adjustment component, which adjusts the position of the lens by screws and springs. Taiwan Patent No. TW M372953 discloses a lens adjustment structure that utilizes a swivel ring and a lens mount to adjust the position of the lens.

【Content of invention】

The invention provides a projector, the adjustment module of which is convenient for adjusting the lens of the projector.

The invention provides an adjustment module, which is convenient for adjusting the lens of the projector.

Other purposes and advantages of the present invention can be further understood from the technical features disclosed in the present invention.

To achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides a projector, including an optical base, a lens and at least one adjustment module. The lens is configured on the optical machine base. The adjusting module includes a housing, an adjusting element, a rotating element, a screw and an elastic piece. The casing is fixed on the lens and has an opening. The adjusting element is arranged in the casing. The rotating element is configured on the housing and coupled to the adjusting element. The rotating element has screw holes. The housing is located between the optical machine base and the rotating element. The screw rod is fixed on the optical machine base. The screw rod passes through the hole and is screwed into the screw hole. The elastic part is supported between the optical machine base and the shell. When the adjusting element drives the rotating element to rotate and move toward the optical base along the screw, the rotating element resists the elastic force of the elastic member and pushes the housing toward the optical base. When the adjusting element drives the rotating element to rotate away from the optical base along the screw, the elastic member releases the elastic potential energy to push the housing away from the optical base.

Said projector, wherein, the adjusting element and the rotating element are two gears meshing with each other.

In the above-mentioned projector, the ratio of the number of teeth of the gear of the adjusting element to the number of teeth of the gear of the rotating element is 1:2.

In the above-mentioned projector, the elastic member is a compression spring and is sheathed on the screw rod.

In the above-mentioned projector, the screw rod has a fixing part and a threaded part, the fixing part is fixed on the optical base, and the threaded part passes through the opening and is screwed into the screw hole.

In the above-mentioned projector, the optical machine base has a non-circular groove, and the fixing part is fitted into the non-circular groove to prevent the rotating element from driving the screw to rotate relative to the housing.

Said projector, wherein, the casing has a limiting slot, and the elastic member can be limited in the limiting slot.

To achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides an adjustment module for a projector. The projector includes an optical base and a lens. The lens is configured on the optical machine base. The adjusting module includes a housing, an adjusting element, a rotating element, a screw and an elastic piece. The casing is fixed on the lens and has an opening. The adjusting element is arranged in the casing. The rotating element is configured on the housing and coupled to the adjusting element. The rotating element has screw holes. The housing is located between the optical machine base and the rotating element. The screw rod is fixed on the optical machine base. The screw rod passes through the hole and is screwed into the screw hole. The elastic part is supported between the optical machine base and the shell. When the adjusting element drives the rotating element to rotate and move toward the optical base along the screw, the rotating element resists the elastic force of the elastic member and pushes the housing toward the optical base. When the adjusting element drives the rotating element to rotate away from the optical base along the screw, the elastic member releases the elastic potential energy to push the housing away from the optical base.

Said adjusting module, wherein, the adjusting element and the rotating element are two meshing gears.

The adjustment module described above, wherein the ratio of the number of teeth of the gear of the adjustment element to the number of teeth of the gear of the rotating element is 1:2.

In the adjustment module, the elastic member is a compression spring and is sheathed on the screw rod.

In the adjustment module described above, the screw rod has a fixing portion and a threaded portion, the fixing portion is fixed on the optical machine base, and the threaded portion passes through the opening and is screwed into the screw hole.

In the above-mentioned adjustment module, the optical machine base has a non-circular groove, and the fixing part is fitted into the non-circular groove to prevent the rotating element from driving the screw to rotate relative to the housing.

In the adjustment module described above, the housing has a limiting slot, and the elastic member can be limited in the limiting slot.

Based on the above, in the above embodiments of the present invention, when the adjusting element drives the rotating element to rotate and move toward the optical base along the screw, the rotating element will resist the elastic force of the elastic member to push the housing toward the optical base, and when the adjustment When the element drives the rotating element to rotate away from the optical base along the screw, the elastic member releases the elastic potential energy and pushes the housing away from the optical base, thereby adjusting the back focus of the lens fixed with the housing to a desired position. Since the adjustment module does not need to use the conventional method of manually attaching gaskets, the adjustment of the lens is more convenient and the manufacturing cost is saved.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, a number of embodiments will be described in detail below together with the accompanying drawings.

【Description of drawings】

FIG. 1 is a perspective view of some components of a projector according to an embodiment of the present invention.

FIG. 2 is a partial perspective view of the adjustment module in the projector of FIG. 1 .

FIG. 3 is a top view of a non-circular slot member in the projector of FIG. 1 .

100: Projector

110: optical base

112: non-circular groove

120: Lens

130: Tuning mods

132: shell

132a: opening

132b: limit slot

134: Adjustment element

136: rotating element

136a: screw hole

138: screw

138a: fixed part

138b: threaded part

139: Elastic parts

D1, D2: direction

【Detailed ways】

The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed descriptions of multiple embodiments with reference to the drawings. The directional terms mentioned in the following embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only referring to the directions of the attached drawings. Accordingly, the directional terms are used to illustrate, not to limit, the invention.

FIG. 1 is a perspective view of some components of a projector according to an embodiment of the present invention. FIG. 2 is a partial perspective view of the adjustment module in the projector of FIG. 1 . Please refer to FIG. 1 and FIG. 2 , the projector 100 of this embodiment includes an optical base 110 , a lens 120 and at least one adjustment module 130 . The lens 120 is disposed on the optical base 110 . The adjusting module 130 includes a housing 132 , an adjusting element 134 , a rotating element 136 , a screw 138 and an elastic member 139 . The casing 132 is fixed on the lens 120 and has an opening 132a. The adjustment element 134 is disposed on the housing 132 . The rotating element 136 is disposed on the casing 132 and coupled to the adjusting element 134 , wherein the rotating element 136 has a screw hole 136 a, and the casing 132 is located between the optical base 110 and the rotating element 136 . The screw 138 is fixed on the optical base 110 , wherein the screw 138 passes through the opening 132 a and is screwed to the screw hole 136 a. The elastic member 139 is supported between the optical machine base 110 and the housing 132 .

When the adjusting element 134 drives the rotating element 136 to rotate and move toward the optical machine base 110 along the screw 138 , the rotating element 136 resists the elastic force of the elastic member 139 to push the housing 132 toward the optical machine base 110 . When the adjusting element 134 drives the rotating element 136 to rotate away from the optical base 110 along the screw 138 , the elastic member 139 releases the elastic potential energy to push the housing 132 away from the optical base 110 .

With the above arrangement, when the user wants to adjust the relative position between the lens 120 of the projector 100 and the optical base 110, the adjusting element 134 can be used to drive the rotating element 136 to rotate, so that the rotating element 136 can move along the direction D1 or direction D1. D2 moves. When the rotating element 136 moves along the direction D1, the rotating element 136 resists the elastic force of the elastic member 139 and pushes the housing 132 toward the optical base 110 to drive the lens 120 to move relative to the optical base 110 . When the rotating element 136 moves along the direction D2, the elastic member 139 releases the elastic potential energy and pushes the casing 132 away from the optical base 110 to drive the lens 120 to move relative to the optical base 110 . Since the projector 100 is equipped with the adjustment module 130 , the user does not need to manually attach gaskets to adjust the focal length of the lens 120 of the projector 100 , thus improving the convenience of operation and saving manufacturing costs.

The present invention does not limit the number of adjustment modules 130 . As shown in FIG. 1 , the projector 100 of this embodiment is provided with a plurality of adjustment modules 130 (shown as three) for example, so that the user can adjust the lens 120 to have an appropriate angle and distance from the optical base 100 . In addition, in this embodiment, the user can manually drive the adjusting element 134 to adjust the focal length of the lens 120 of the projector 100 . In other embodiments, the adjusting element 134 may also be driven by other appropriate methods, which is not limited by the present invention.

Please refer to Fig. 2, in detail, the adjustment element 134 and the rotation element 136 of the present embodiment are two gears that are engaged, and the elastic member 139 is a compression spring, wherein the number of teeth of the gear of the adjustment element is equal to the number of teeth of the gear of the rotation element. The ratio is 1:2, which is convenient for fine-tuning the lens. In terms of design, the elastic member 139 is sleeved on the screw rod 138 to limit the position of the elastic member 139 and make the overall structure more stable. In addition, the screw 138 has a fixed portion 138a connected to it and a threaded portion 138b. The fixed portion 138a is fixed on the optical base 110, and the threaded portion 138b passes through the hole 132a and is screwed to the screw hole 136a.

FIG. 3 is a top view of a non-circular slot member in the projector of FIG. 1 . Please refer to FIG. 2 and FIG. 3 , the optical base 110 of this embodiment has a non-circular groove 112, and the fixing portion 138a is fitted in the non-circular groove 112 to prevent the rotating element 136 from rotating due to the rotation of the rotating element 136 and the screw. The hole 136 a is too tight to drive the screw 138 to rotate relative to the housing 132 . In detail, the fixing portion 138a of the screw rod 138 of this embodiment has a non-circular profile corresponding to the non-circular groove 112, so that it is used to fit into the non-circular groove 112; the above is the implementation of an embodiment , it is not limited to the so-called non-circular groove 112 as shown in FIG. 3 , further explanation, the non-circular groove 112 is defined as its shape as long as it has an angle corresponding to the shape of the screw rod 138 fixing part 138a, such as triangle, quadrilateral, etc. It belongs to the invention scope of this case. In addition, in order to further fix the position of the elastic member 139 , the housing 132 of this embodiment has a limiting groove 132 b, and the elastic member 139 is limited in the limiting groove 132 b to prevent the elastic member 139 from being displaced along the radial direction of the screw rod 138 .

To sum up, in the above embodiments of the present invention, when the adjusting element drives the rotating element to rotate and move along the screw to the optical base, the rotating element will resist the elastic force of the elastic member and push the housing toward the optical base, and When the adjusting element drives the rotating element to rotate away from the optical base along the screw, the elastic member will release the elastic potential energy and push the housing away from the optical base, thereby adjusting the back focus of the lens fixed with the housing to a desired position . Since the adjustment module does not need to use the conventional method of manually attaching gaskets, the adjustment of the lens is more convenient and the manufacturing cost is saved.

The above is only a preferred embodiment of the present invention, and should not limit the scope of the present invention, that is, all simple equivalent changes and modifications made according to the patent scope of the present invention and the content of the description of the invention are still the same. It is within the scope covered by the patent of the present invention. In addition, any embodiment or scope of claims of the present invention does not necessarily achieve all the objectives or advantages or features disclosed in the present invention.

Claims (14)

1. projector comprises:

One optical base;

One camera lens is disposed at this optical base; And

At least one adjustment module comprises:

One housing is fixed in this camera lens and has a perforate;

One adjustment element is disposed at this housing;

One rotating element is disposed at this housing and couples this adjustment element, and wherein this rotating element has a screw, and this housing is between this optical base and this rotating element;

One screw rod is fixed in this optical base, and wherein this screw rod passes this perforate and screw lock in this screw; And

One elastic component; Hold and peak between this optical base and this housing; When wherein moving when this rotating element rotation of this adjustment element drives and along this screw rod toward this optical base; The elastic force of this elastic component of this rotating element opposing is pushed this housing to this optical base, when this this rotating element of adjustment element drives rotates and along this screw rod during away from this optical base, this elastic component discharges elasticity potential energy and promotes this housing away from this optical base.

2. projector as claimed in claim 1, wherein, this adjustment element and this rotating element are two gears that are meshed.

3. projector as claimed in claim 2, wherein, the number of teeth of the gear of this adjustment element is 1: 2 with the ratio of the number of teeth of the gear of this rotating element.

4. projector as claimed in claim 1, wherein, this elastic component is a compression spring and is sheathed on this screw rod.

5. projector as claimed in claim 1, wherein, this screw rod has a fixed part and a threaded portion, and this fixed part is fixed in this optical base, and this perforate and screw lock are passed in this screw in this threaded portion.

6. projector as claimed in claim 5, wherein, this optical base has a non-circular slot, and this fixed part is embedded in this non-circular slot, rotates with respect to this housing in order to stop this rotating element to drive this screw rod.

7. projector as claimed in claim 1, wherein, this housing has a stopper slot, and this elastic component can be limited in this stopper slot.

8. an adjustment module is used for a projector, and this projector comprises an optical base and a camera lens, and this configurations of lenses is in this optical base, and this adjustment module comprises:

One housing is fixed in this camera lens and has a perforate;

One adjustment element is disposed at this housing;

One rotating element is disposed at this housing and couples this adjustment element, and wherein this rotating element has a screw, and this housing is between this optical base and this rotating element;

One screw rod is fixed in this optical base, and wherein this screw rod passes this perforate and screw lock in this screw; And

One elastic component; Hold and peak between this optical base and this housing; When wherein moving when this rotating element rotation of this adjustment element drives and along this screw rod toward this optical base; The elastic force of this elastic component of this rotating element opposing is pushed this housing to this optical base, when this this rotating element of adjustment element drives rotates and along this screw rod during away from this optical base, this elastic component discharges elasticity potential energy and promotes this housing away from this optical base.

9. adjustment module as claimed in claim 8, wherein, this adjustment element and this rotating element are two gears that are meshed.

10. adjustment module as claimed in claim 9, wherein, the number of teeth of the gear of this adjustment element is 1: 2 with the ratio of the number of teeth of the gear of this rotating element.

11. adjustment module as claimed in claim 8, wherein, this elastic component is a compression spring and is sheathed on this screw rod.

12. adjustment module as claimed in claim 8, wherein, this screw rod has a fixed part and a threaded portion, and this fixed part is fixed in this optical base, and this perforate and screw lock are passed in this screw in this threaded portion.

13. adjustment module as claimed in claim 12, wherein, this optical base has a non-circular slot, and this fixed part is embedded in this non-circular slot, rotates with respect to this housing in order to stop this rotating element to drive this screw rod.

14. adjustment module as claimed in claim 8, wherein, this housing has a stopper slot, and this elastic component can be limited in this stopper slot.

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