TWI591416B - Image projector - Google Patents

Description

Projector

The present invention relates to a projector, and more particularly to a projector for a replaceable color wheel module.

Digital Light Processing (DLP) projectors have become the mainstream products of projectors in recent years due to their high brightness, high contrast, vivid color and fast response.

The color wheel modules used in DLP projectors are mainly divided into color wheel modules that provide high brightness and color wheel modules that emphasize color vividness. Users can replace different types of color wheel modules in the projector according to their needs. However, since the conventional projector assembles the color wheel module to the housing of the projector, the optical components in the projector may have tolerances with the color wheel module, so that the light cannot be accurately projected after being split by the color wheel. On the screen, this may affect the quality of the image. Moreover, after the color wheel module is disassembled and removed many times, it is easy to cause damage to the electrical connection components of the projector.

The invention relates to a projector, which is characterized in that the color wheel module is positioned in the groove of the light machine module by using the first positioning device on the light machine module and the second positioning device on the color wheel module. Installation, high precision, and can avoid Damage to the electrical connection device.

According to an embodiment of the invention, a projector is provided, comprising a light source, a light machine module and a color wheel module. The optomechanical module includes a optomechanical housing, a first positioning device, and a first electrical connection device. The optomechanical housing is provided with a recess. The first positioning device is disposed on the light machine housing. The first electrical connection device is disposed in the recess. The color wheel module is replaceably assembled to the light machine module. The color wheel module comprises a color wheel, a color wheel housing, a second positioning device and a second electrical connection device. The color wheel is placed in the groove. The color wheel housing is disposed on the light machine housing. The second positioning device is disposed on the color wheel housing. The second electrical connection device is disposed on the color wheel housing. The color wheel module is positioned in the groove through the first positioning device and the second positioning device, and the first electrical connection device and the second electrical connection device are sandwiched between the optical machine housing and the color wheel housing and are mutually Electrical connection.

In order to better understand the above and other aspects of the present invention, the preferred embodiments are described below, and in conjunction with the drawings, the detailed description is as follows:

10‧‧‧Projector

12‧‧‧Light source

14‧‧‧ lens

100‧‧‧ optomechanical module

110‧‧‧Light machine housing

112‧‧‧ Groove

130‧‧‧First electrical connection device

132‧‧‧First electrical connection point

140‧‧‧ light pipe

150‧‧‧First locking hole

200‧‧‧Color wheel module

210‧‧‧Color wheel housing

212‧‧‧Flat plates

230‧‧‧Second electrical connection device

232‧‧‧second electrical connection point

250‧‧‧Second locking hole

C‧‧‧ accommodating space

L‧‧‧Light

1A is a top plan view of a portion of a optomechanical module in accordance with an embodiment of the present invention.

FIG. 1B is a perspective side view showing a portion of a optomechanical module according to an embodiment of the present invention.

2A is a plan top view of the back side of the color wheel module in accordance with an embodiment of the present invention.

2B is a diagram showing the back of the color wheel module according to an embodiment of the present invention. Side view of the body.

2C is a plan top view of the front side of the color wheel module in accordance with an embodiment of the present invention.

2D is a perspective side view of a projector in accordance with an embodiment of the present invention.

FIG. 3 is a partial plan top view of the projector after the color wheel module is assembled to the optical module according to an embodiment of the invention.

Referring to FIGS. 1A and 1B, a plan top view and a perspective side view of a portion of a optomechanical module 100 in accordance with an embodiment of the present invention are shown. The optomechanical module 100 includes a optomechanical housing 110, at least one first positioning device 120, and a first electrical connection device 130. The optomechanical housing 110 is provided with a recess 112. The first positioning device 120 is disposed on the light machine housing 110. The first electrical connection device 130 is disposed in the recess 112 and has a first connection point 132. The light module module 100 further defines a light pipe 140 adjacent to the first connecting device 130 in the recess 112. The first electrical connection device 130 and the light pipe 140 are concentrated on the same side (or different sides) of the grooves 112. In addition, the optomechanical housing 110 further has an accommodating space C, and a digital micromirror device (not shown) is disposed in the accommodating space C. In addition, a plurality of first locking holes 150 are also disposed on the optical machine housing 110. The first positioning device 120 and the first locking hole 150 are located at the periphery of the groove 112.

Please refer to FIGS. 2A, 2B and 2C, which illustrate a plan top view, a perspective side view and a front side of the back side of the color wheel module 200 according to an embodiment of the present invention. Plane on the view. The color wheel module 200 includes a color wheel 202, a color wheel housing 210, at least one second positioning device 220, and a second electrical connection device 230. The color wheel 202 is received in the recess 112 of the optical housing 110, and the color wheel housing 210 can be disposed on the optical housing 110 to fix the color wheel 202 in the recess 112, as shown in FIG. Shown. The second positioning device 220 is disposed on the color wheel housing 210. The second electrical connection device 230 is disposed on the color wheel housing 210 and has a second connection point 232. The color wheel housing 210 includes a planar plate member 212. The second positioning device 220 and the second electrical connection device 230 are disposed on the planar plate member 212.

Referring to FIG. 2D, the optomechanical module 100 and the color wheel module 200 can be used in a DLP projector 10, and the projector 10 is usually equipped with a light source 12, and the light L provided by the light source passes through the color wheel. After performing the color separation operation of the three primary colors of red, blue, and green, the optical components such as a light pipe are passed through a digital micromirror device (DMD), and the image is presented on the screen via the lens 14.

The color wheel module 200 further includes a plurality of second locking holes 250 and a plurality of locking members (not shown), such as screws. Each of the first locking holes 150 corresponds to each of the second locking holes 250 to engage the respective locking members. After the color wheel module 200 of FIGS. 2A and 2B is flipped by 180°, the color wheel module 200 on the front side of FIG. 2C can be obtained, and the planar plate member 212 and the second electrical connection device 230 thereon are disposed on the color wheel. The top of 202.

Please refer to FIG. 3 , which illustrates a plan view of the color wheel module 100 after being assembled in the optical module 200 . When the color wheel module 100 is assembled to the light machine module 200 Thereafter, the color wheel 202 is received in the groove 112, and the color wheel housing 210 is disposed on the light machine housing 110. The color wheel module 200 is positioned in the groove 112 through the first positioning device 120 and the second positioning device 220. The first electrical connection device 130 and the second electrical connection device 230 are sandwiched between the optical device housing 110 and the color. The wheel housings 210 are electrically connected to each other. In an embodiment, after the color wheel 202 is engaged with the groove 112, the first connection point 132 and the second connection point 232 are positioned through the first positioning device 120 and the second positioning device 220, and are directly contacted and electrically connected. The first electrical connection device 130 and the second electrical connection device 230 do not need to be designed as positioning structures that are intercalated with each other.

The first positioning device 120 and the second positioning device 220 can correspond to each other, so that when the color wheel module 200 is assembled on the optical module 100, the color wheel module 200 can quickly pass through the first positioning device 120 and The second positioning device 220 performs accurate positioning to easily engage the color wheel module 200 in the recess 112 of the optomechanical module 100. Since the optomechanical module 100 is the reference of all the optical components of the projector 10 and directly positioned by the first positioning device 120 on the optomechanical module 100, the color wheel module 200 and the optomechanical module 100 can be The optical components are more precisely aligned. Compared to the comparative example in which the color wheel module is fixed to the outer casing of the projector, it is possible to avoid the occurrence of cumulative assembly work.

Moreover, since the first positioning device 120 and the second positioning device 220 are actually used for mechanical positioning, no electrical components are used for positioning, compared to the use of the color wheel module and the optical module. In the comparative example in which the two electrical connecting devices are positioned, the two electrical connecting devices with relatively soft materials can be prevented from directly being stressed and the wear is increased; and the process of locking the screws after positioning can be avoided. The color wheel module and the light machine module are twisted by the two electrical connection devices to cause the two electrical connection devices to be damaged by bending, tin cracking or the like. That is, the first positioning device 120 and the second positioning device 220 of one embodiment of the present invention can still make the two electrical connecting devices have good electrical connection after being disassembled and assembled with different types of color wheel modules, and are not easily damaged. .

In one embodiment, after the color wheel module 200 is engaged with the light machine module 100, the planar plate member 212 covers the light machine housing 110, so that the color wheel housing 210 seals the recess 112.

In an embodiment, when the first positioning device 120 is a positioning pin, the second positioning device 220 is a positioning hole; when the first positioning device 120 is a positioning hole, the second positioning device 220 is a positioning pin. And the positioning pin corresponds to the positioning hole.

In one embodiment, the color wheel module 200 and the light machine module 100 are positioned through a first positioning device 120 and a second positioning device 220, and limit the XY between the optical module 100 and the color wheel module 200. The displacement in the plane limits the rotation between the optomechanical module 100 and the color wheel module 200 by the first electrical connection device and the second electrical connection device.

In an embodiment, the positioning pin has a circular cross section and the positioning hole is a circular hole.

In an embodiment, the positioning pin has a non-circular cross section and the positioning hole is a non-circular hole. For example, the cross section of the positioning pin may be a triangle, a rectangle, a cross, etc. The positioning holes can be triangular holes, rectangular holes, crosses Shaped holes...etc. When the color wheel module 200 and the light machine module 100 are positioned through a first positioning device 120 and a second positioning device 220, the positioning pin having a non-circular cross section and the positioning hole having a non-circular hole are compared with the positioning hole The positioning pin having a circular cross section and the positioning hole having a circular hole can more restrict the movement and rotation in the XY plane between the optomechanical module 100 and the color wheel module 200.

In an embodiment, the number of the first positioning devices 120 is 2 or more, the number of the second positioning devices 220 is 2 or more, and each of the first positioning devices 120 corresponds to each of the second positioning devices. 220. When each of the first positioning devices 120 is a positioning pin, each of the second positioning devices 220 is a positioning hole; when each of the first positioning devices 120 is a positioning hole, each of the second positioning devices 220 is a positioning pin. The positioning pin corresponds to the positioning hole, and the positioning pin has a circular cross section, and the positioning hole has a circular hole. When the color wheel module 200 and the light machine module 100 are positioned through two or more than two first positioning devices 120 and two or more than two second positioning devices 220, compared to using only one first positioning For the embodiment in which the device 120 and the one second positioning device 220 are positioned, even if the positioning pin has a circular cross section and the positioning hole has a circular hole, the optical module 100 can be more limited by the increase of the number of positioning devices. Movement and rotation of the color wheel module 200 in the XY plane.

In an embodiment, the light provided by the light source can be accurately concentrated on the color wheel 202 in the color wheel module 200 for color separation, and transmitted through the light pipe 140 and the optical components such as DMD in the accommodation space, and then through the lens. Present an image.

According to an embodiment of the invention, the projector 10 includes a light source 12, a light machine module 100 and a color wheel module 200. The optomechanical module 100 includes a light housing The body 110, the at least one first positioning device 120 and a first electrical connection device 130. The optomechanical housing 110 is provided with a recess 112. The first positioning device 120 is disposed on the light machine housing 110. The first electrical connection device 130 is disposed within the recess 112. The color wheel module 200 is replaceably assembled to the light machine module 100. The color wheel module 200 includes a color wheel 202, a color wheel housing 210, at least one second positioning device 220, and a second electrical connection device 230. The color wheel 202 is received in the recess 112. The color wheel housing 210 is disposed on the light machine housing 110. The second positioning device 220 is disposed on the color wheel housing 210. The second electrical connection device 230 is disposed on the color wheel housing 210. The color wheel module 200 is positioned in the groove 112 through the first positioning device 120 and the second positioning device 220. The first electrical connection device 130 and the second electrical connection device 230 are sandwiched between the optical device housing 110 and the color. The wheel housings 210 are electrically connected to each other.

Since one embodiment of the present invention uses the first positioning device 120 on the optomechanical module 100 and the second positioning device 220 on the color wheel module 200 to perform mechanical positioning. Compared with the comparative example in which the positioning device is disposed on the outer casing of the projector, the color wheel module 200 can precisely match the optical components located in the optical module 100, reducing the tolerance between the optical component and the color wheel module 200. . In addition, compared with the comparative example in which the optical connecting device of the color wheel module and the optical module is used for positioning, the opportunity for the electrical connecting device to increase the wear due to the direct force of the positioning can be avoided, and the screw can be avoided after the positioning. During the locking process, the color wheel module and the light machine module are twisted by the electrical connecting device to cause the electrical connecting device to be damaged by bending, tin cracking or the like. Therefore, the projector 10 according to an embodiment of the present invention is not only easy to install, has high precision, and can avoid damage of the electrical connection device.

In conclusion, the present invention has been disclosed in the above preferred embodiments, and is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

10‧‧‧Projector

12‧‧‧Light source

14‧‧‧ lens

100‧‧‧ optomechanical module

200‧‧‧Color wheel module

L‧‧‧Light

Claims (11)

A projector comprising: a light source; and a light machine module comprising: a light machine housing, provided with a groove; at least one first positioning device disposed on the light machine housing; and a first electric The connecting device is disposed in the recess; the color wheel module is replaceably assembled on the optical module, the color wheel module comprises: a color wheel, is received in the groove; and a color wheel housing, The second color positioning device is disposed on the color wheel housing; and a second electrical connection device is disposed on the color wheel housing, wherein the color wheel module is Positioned in the recess through the at least one first positioning device and the at least one second positioning device, the first electrical connecting device and the second electrical connecting device being interposed between the optical machine housing and the color wheel housing And electrically connected to each other; and the second electrical connection device is disposed at the top of the color wheel, the first electrical connection device has a first connection point, and the second electrical connection device has a second connection point, After the color wheel is engaged in the groove, the first connection point and the second connection point pass through the first Positioning means and the second positioning means, in direct contact with and electrically connected. The projector of claim 1, wherein the at least one When the positioning device is a positioning pin, the at least one second positioning device is a positioning hole; when the at least one first positioning device is a positioning hole, the at least one second positioning device is a positioning pin, the positioning pin Corresponding to the positioning hole. The projector of claim 2, wherein the positioning pin has a non-circular cross section, and the positioning hole is a non-circular hole. The projector of claim 1, wherein the color wheel housing seals the groove after the color wheel module is engaged with the light machine module. The projector of claim 1, wherein the number of the at least one first positioning device is two or more, and the number of the at least one second positioning device is two or more, and each The first positioning device corresponds to each of the second positioning devices. The projector of claim 5, wherein when each of the first positioning devices is a positioning pin, each of the second positioning devices is a positioning hole; when each of the first positioning devices is a positioning hole Each of the second positioning devices is a positioning pin, the positioning pin corresponds to the positioning hole, and the positioning pin has a circular cross section. The projector of claim 1, wherein the optomechanical module further comprises a light pipe and a digital micromirror device, wherein the light pipe is disposed in the groove, and the digital micromirror device is disposed on the light In an accommodating space in the casing, the accommodating space is adjacent to the groove. The projector of claim 1, wherein the optomechanical module further comprises a plurality of first locking holes, the color wheel module further comprising a plurality of second locking holes and a plurality of locking components, each The first locking hole corresponds to each of the second locking holes to engage Each of the locks. The projector of claim 1, wherein the color wheel housing comprises a planar plate member covering the optical machine housing to seal the recess, and the at least one second positioning The device and the second electrical connection device are both disposed on the planar panel. A projector comprising: a light source; and a light machine module comprising: a light machine housing, provided with a groove; at least one first positioning device disposed on the light machine housing; and a first electric The connecting device is disposed in the recess; the color wheel module is replaceably assembled on the optical module, the color wheel module comprises: a color wheel, is received in the groove; and a color wheel housing, The second color positioning device is disposed on the color wheel housing; and a second electrical connection device is disposed on the color wheel housing, wherein the color wheel module is Positioned in the recess through the at least one first positioning device and the at least one second positioning device, the first electrical connecting device and the second electrical connecting device being interposed between the optical machine housing and the color wheel housing And electrically connected to each other; and after the color wheel module is engaged with the light machine module, the color wheel housing seals the groove. A projector comprising: a light source; and a light machine module comprising: a light machine housing, provided with a groove; at least one first positioning device disposed on the light machine housing; and a first electric The connecting device is disposed in the recess; the color wheel module is replaceably assembled on the optical module, the color wheel module comprises: a color wheel, is received in the groove; and a color wheel housing, The second color positioning device is disposed on the color wheel housing; and a second electrical connection device is disposed on the color wheel housing, wherein the color wheel module is Positioned in the recess through the at least one first positioning device and the at least one second positioning device, the first electrical connecting device and the second electrical connecting device being interposed between the optical machine housing and the color wheel housing And electrically connected to each other; and the color wheel housing comprises a planar plate member covering the optical machine housing to seal the recess, and the at least one second positioning device and the second Electrical connection devices are disposed on the planar panel.