TWM447514U - Filter and filters assembly comprising the same - Google Patents

Description

Filter and filter assembly including the same

The present invention relates to a filter for a projector, and more particularly to a filter having an integral structure and a filter assembly including the filter.

In recent years, various projectors have become very popular. In general, projectors have the form of using a light source. However, the life of the lamp source is short, and it has disadvantages such as a large light source area or low light utilization efficiency. Therefore, the light source of the projector is changed to use a laser light source.

Compared with the light source, the laser light source is small in size, long in life, and has strong directivity. The size of the projector is also miniaturized, and it is easy to achieve high light utilization efficiency, and the image that can be displayed by the projector is more vivid.

Laser source projectors must use high-accumulation laser matrix modules, but due to volume limitations, the density required for projection cannot be achieved. Therefore, two sets of laser matrix modules must be used to achieve the projector system in a combined manner. The density of the laser array. As shown in FIG. 1, the laser beam 12 of one of the laser matrix modules is projected by a pair of reflecting mirrors 10 of the combining mirror to project a predetermined position, and the laser beam of the other laser matrix module is projected. 14 is reflected by each of the reflecting mirrors 10 of the light combining mirror and projected to the predetermined position. In such projector systems, the fused mirror is the key to this approach.

However, in the above-mentioned conventional projector structure, the reflective lens 10 that reflects the laser beam 14 is attached to the joint portion 16 of the projector base with a UV adhesive in a pasting manner, and the reflective lens 10 must be flat and uniform when pasted, and pasted. Need UV light after The coating is cured, and the bonding takes a while, so assembly is difficult and affects mass production.

In addition, as shown in FIG. 2, if the reflective lens 10 is not uniformly aligned, the laser beam 14 cannot be reflected to a specified position, so that the laser array density required by the projector system cannot be achieved, and the projected image is also flawed.

Therefore, it is necessary to provide a novel and progressive filter and a filter assembly including the same to solve the above problems.

The main purpose of this creation is to provide a filter (Stripe Mirror) and a filter assembly including the same, which are easy to assemble, have small errors, and can increase production speed.

In order to achieve the above object, the filter of the present invention is installed in a projector, and the projector comprises two light source devices for respectively generating first light and second light and projecting to opposite sides of the filter. The filter comprises a body integrally formed, the body being formed with a plurality of first portions and a plurality of second portions, the first portions and the second portions being spaced apart or/and spaced apart, and two or two The adjacent first portion and the second portion have different reflectivities or transmittances, the first portions are capable of reflecting the first light, and the second portions are for allowing the second light to pass.

In order to achieve the above object, the filter assembly of the present invention comprises a filter as described above and a positioning member, which is disposed on a projector and connected to the filter to fix and position the filter.

The first part (reflection area) and the second part (light transmission area) of the present filter are coplanar, and in particular, the first part of the reflection is coplanar, so that the first light after reflection and after penetration The second light is accurately projected to a predetermined position, and the error is reduced to almost zero.

Secondly, the second part can be formed directly by hollowing out the body part, so that the second light can be completely reflected without being obtained to obtain the maximum light transmittance.

Furthermore, the filter of the present invention is a one-piece structure, which can be inserted or fastened by means of a machine component, and does not require a conventional UV pasting process during assembly, so assembly and disassembly are easy, and the production speed of the product can be improved.

The structural features of the present invention and the intended effects thereof are described in the following preferred embodiments, and are not intended to limit the scope of the present invention.

Referring to Figures 3 and 4, the filter 30 of the present invention is mounted in a projector, such as a laser projector, and includes two laser light source devices 20, 22, the two lasers The light source devices 20 and 22 respectively generate the first light ray 201 and the second light ray 221 and project to opposite sides of the filter 30.

The filter 30 includes a body 32 integrally formed. The body 32 has a first surface 321 and a second surface 322 opposite to each other, and is formed with a plurality of first portions 323 and a plurality of second portions 324. A portion 323 and the second portions 324 are spaced apart or/and are spaced apart. More specifically, the first portions 323 and the second portions 324 are substantially parallel strips, and the A portion 323 and the second portions 324 are substantially coplanar. Two two The adjacent first portion 323 and the second portion 324 have different reflectivity or transmittance. More specifically, the first portions 323 have a higher reflectivity and ideally completely reflect the first light 201. The second portions 324 have a higher transmittance and ideally allow the second light 221 to pass completely. The surface of the first portion 323 and the first light ray 201 have a predetermined angle such that the reflected first light ray 201 is substantially parallel to the second light ray 221 passing through the second portions 324. The first ray 201 is preferably projected onto the first portions 323 at an incident angle of 40-50. Because the first portions 323 are substantially coplanar, the angle between the surfaces of the first portions 323 and the first ray 201 are the same to cause the first ray 201 to be accurately reflected and projected to a predetermined position.

In this embodiment, the first portion 323 is provided with a reflective layer 325 by a pattern coating method, and an anti-reflection layer (AR) 326 is disposed on the surface of the second portions 324. The material of the reflective layer 325 is a metal or oxide having high reflectivity such as silver, cerium oxide or cerium oxide (other suitable materials having high reflectivity), and the material of the anti-reflective layer 326 is, for example, fluorinated. Magnesium (MgF2) (other suitable materials with high penetration rate). The reflective layer 325 is disposed on the second surface 322 of the body 32. The second light 221 can be directly reflected by the reflective layer 325 without being reflected by the thickness of the body 32, and the reflection effect is better; The reflective layer 326 is disposed on the first surface 321 of the body 32 to reduce the reflection of the first light 201 and increase the penetration amount thereof and reduce the surface glare.

It should be noted that the reflective layer 325 can be disposed on the first surface 321 of the body 32, and the anti-reflective layer 326 can be disposed on the second surface 322 of the body 32; or the reflective layer 325 and the anti-reflective layer 326 The first surface 321 or the second surface 322 of the body 32 can be disposed at the same time; the second portion 324 is not provided with the anti-reflection layer 326 (the second portion 324 is a part of the body 32), and is also unnecessary.

Referring to FIG. 5, in another preferred embodiment of the present invention, the first portion 423 of the filter 40 and the second portions 424 are arrayed, more specifically, the first portion 423 and the like. The second portion 424 is alternately disposed on the body 42 in each row, and the first portion 423 and the second portions 424 are alternately disposed on the body 42 in each row. In other words, the reflective layer 425 and the anti-reflective layer 426 are distributed in an array on the body 42 . That is, the reflective layer 425 and the anti-reflective layer 426 are alternately disposed on the body 42 in each row and each column.

Referring to FIG. 6, in another preferred embodiment of the present invention, the second portion 524 of the filter 50 is a hollow portion of the body 52. In other words, the reflective layer 525 is attached to the surface of the body 52. The second portion 524 is a space formed by the body 52 of the filter 50, so that the second light 221 can pass through 100% without being reflected, so that the maximum light transmittance can be obtained.

Referring to FIG. 7 and FIG. 3, the present invention also provides a filter assembly 60. The filter assembly 60 includes a filter 30 as shown in FIG. 3 (also as shown in FIG. 5 or 6). The light sheet 40, 50) and a positioning member 62 are disposed on a projector and connected to the filter 30 to fix and position the filter 30. More specifically, the bottom side of the positioning member 62 is fixed to one of the bases of the projector (not As shown in the figure, a slot 621 is defined in the upper side thereof, so that the filter 30 can be detachably inserted directly without the adhesive process, thereby not only the filter 30 is easy to install, but also accurately Ensure the angle between the filter 30 and each light. After the positioning member 62 fixes and positions the filter 30, the angle between the first portion 323 and the first light ray 201 can be maintained to accurately reflect and project the first light ray 201 to a predetermined position.

Referring to FIG. 8 and FIG. 3, in another preferred embodiment of the present invention, the present invention provides a filter assembly 70, which includes a filter 30 as shown in FIG. For example, the filter 40, 50) and the positioning member 64 are shown in FIG. 5 or 6. The positioning member 64 includes two oppositely disposed posts 641, and each of the posts 641 is fixed to a base of the projector ( The two columns 641 are respectively provided with a long groove 642 on the opposite side, and the filter 30 is detachably directly inserted into the two long grooves 642 with the opposite side edges thereof, without the need to stick the process. Thereby, not only the filter 30 is easily installed, but also the angle between the first portion 323 of the filter 30 and the first light ray 201 can be maintained to accurately reflect and project the light to a predetermined position.

In addition to the above-mentioned assembly method, the filter may also be provided with a buckle portion (not shown) that can be engaged with a snap mechanism provided on the base of the projector, thereby being easily assembled without losing light projection. The accuracy.

As described above, the reflection zone (first part) and the light transmission zone (second part) of the creation filter are coplanar, and in particular, the reflection zone is coplanar, so that the first light after reflection can be worn. The second light is accurately projected to the pre-position The error is reduced to almost zero.

Secondly, the light-transmissive area (the second part) of the present filter can be directly formed by the hollowing out of the body portion, so that the light can be completely reflected without being reflected to obtain the maximum light transmittance, and can be simplified to only one time. The process of the reflective layer does not require the use of a more complicated pattern coating method, nor does it need to form an anti-reflection layer, and the process is simple and fast, and the cost can be reduced.

Furthermore, the filter of the present invention is a one-piece structure, which can be inserted or fastened by means of a machine component, and does not require a conventional UV pasting process during assembly, so assembly and disassembly are easy, and the production speed of the product can be improved.

In summary, the overall structural design, practicality and efficiency of the plastic funnel of this creation are indeed in full compliance with the development of the industry, and the disclosed structural creation is also an unprecedented innovative structure, so it has "newness" Sexuality should be undoubtedly considered, and this creation can be more effective than the conventional structure. Therefore, it is also "progressive". It fully complies with the requirements of the application requirements for the creation of patents in the Patent Law of China, and is a patent application in accordance with the law. And please ask the bureau to review it early and give it affirmation.

This creative part:

20, 22‧‧‧ laser light source device

201‧‧‧First light

221‧‧‧second light

30‧‧‧Filter

32‧‧‧Ontology

321‧‧‧ first surface

322‧‧‧ second surface

323‧‧‧Part 1

324‧‧‧Part II

325‧‧‧reflective layer

326‧‧‧Anti-reflective layer

40‧‧‧Filter

42‧‧‧Ontology

423‧‧‧Part 1

424‧‧‧Part II

425‧‧‧reflective layer

426‧‧‧Anti-reflective layer

50‧‧‧Filter

52‧‧‧ body

523‧‧‧Part 1

524‧‧‧Part II

525‧‧‧reflective layer

60‧‧‧Filter components

62‧‧‧ Positioning parts

621‧‧‧ slots

70‧‧‧Filter assembly

64‧‧‧ Positioning parts

641‧‧‧ column

642‧‧‧Long slot

Conventional part:

10‧‧‧Reflective lenses

12‧‧‧Laser beam

14‧‧‧Laser beam

16‧‧‧Combination Department

1 and 2 are schematic views of a conventional technique for combining light.

3 and FIG. 4 are schematic views of a filter for combining light according to a preferred embodiment of the present invention.

FIG. 5 is a schematic view of another preferred embodiment of the filter for combining light.

FIG. 6 is a schematic view of a filter of another preferred embodiment of the present invention for combining light.

Figure 7 is a schematic illustration of a filter assembly of a preferred embodiment of the present invention.

Figure 8 is a schematic illustration of another preferred embodiment of the filter assembly of the present invention.

201‧‧‧First light

221‧‧‧second light

30‧‧‧Filter

32‧‧‧Ontology

321‧‧‧ first surface

322‧‧‧ second surface

323‧‧‧Part 1

324‧‧‧Part II

325‧‧‧reflective layer

326‧‧‧Anti-reflective layer

Claims (15)

A filter (Stripe Mirror) for mounting in a projector, the projector comprising two light source devices, respectively generating a first light and a second light and projecting to two opposite sides of the filter, The filter comprises a body integrally formed, the body being formed with a plurality of first portions and a plurality of second portions, the first portions and the second portions being spaced apart or/and spaced apart, and adjacent to each other The first portion and the second portion have different reflectivity or transmittance, the first portions are capable of reflecting the first light, and the second portions are for allowing the second light to pass. The filter of claim 1, wherein the first portion and the second portions are substantially parallel strips. The filter of claim 1, wherein the first portion is provided with a reflective layer. The filter of claim 3, wherein the material of the reflective layer is a metal or oxide having high reflectivity. The filter of claim 4, wherein the reflective layer is made of silver, cerium oxide or cerium oxide. The filter of claim 1, wherein an anti-reflection layer is provided on the surface of the second portions. The filter of claim 1, wherein the first portion is provided with a reflective layer, and the second portion is provided with an anti-reflective layer. The filter of claim 7, wherein the reflective layer and the anti-reflective layer are disposed on the same side or opposite sides of the body. The filter of claim 1, wherein the second portion is a part of the body Minute. The filter of claim 1, wherein the first portion and the second portions are distributed in an array. The filter of claim 1, wherein the second portion is a hollow portion of the body. The filter of claim 1, wherein the first portion of the surface and the first light have a predetermined angle such that the reflected first light and the second light passing through the second portion are substantially Parallel. A filter assembly, comprising the filter according to any one of claims 1 to 12, and a positioning member, the positioning member is disposed on a projector and connected to the filter to fix and position the filter Filter. The filter assembly of claim 13, wherein the positioning member is provided with a slot for the filter to be detachably inserted into the slot. The filter assembly of claim 13, wherein the positioning member comprises two oppositely disposed columns, the two columns respectively defining a long slot on the opposite side, wherein the filter is detachably inserted with the opposite side edges thereof Located in the two long slots.