CN209488724U - A kind of adjustable background color LCD projector - Google Patents
A kind of adjustable background color LCD projector Download PDFInfo
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- CN209488724U CN209488724U CN201920208606.2U CN201920208606U CN209488724U CN 209488724 U CN209488724 U CN 209488724U CN 201920208606 U CN201920208606 U CN 201920208606U CN 209488724 U CN209488724 U CN 209488724U
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- polarisation
- ager
- liquid crystal
- crystal display
- background color
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Abstract
The utility model discloses a kind of adjustable background color LCD projectors, including body, reflective mirror, LED light, optically focused convex lens, liquid crystal display, projection lens are disposed in the body, it is characterized in that being equipped with preceding polarisation ager between the optically focused convex lens and liquid crystal display, rear polarisation ager is equipped between liquid crystal display and projection lens, it is equipped with polaroid among the forward and backward polarisation ager, the utility model structure is simple, at low cost；Using LED cold light source as projection light source, will not height heat production, can avoid that cooling fan is installed for cooling, have compressed projection device volume, while reducing power consumption, because its not heat production advantage is also convenient for using for a long time；, can as needed or hobby rotation adjusts forward and backward polarisation ager angle to adjust the display background color of needs using forward and backward polarisation ager, greatly increase the use space and application field of the utility model.
Description
Technical field
The utility model relates to projection display technique field more particularly to a kind of adjustable background color LCD projectors.
Background technique
Existing liquid crystal projection apparatus is mainly liquid crystal light valve projector and liquid crystal display projector, and liquid crystal light valve projector is logical
The optical signal for crossing CRT output is irradiated on photoelectricity brain converter, converts optical signals to the electric signal for continuing variation；Outer light source produces
Raw An Intense Beam of Light, projects on light light valve, is reflected by internal mirror, can cross optical modulator, change its optical characteristics, follow light closely
The polarizing filter of valve will filter off the light in other directions, and only allow to pass through with its consistent light in optical slot direction, this light
It is mutually compound with CRT signal, it projects on screen.Liquid crystal display projector is the photoelectric effect using liquid crystal, the i.e. row of liquid crystal molecule
It is listed under electric field action and changes, influence the light transmittance or reflectivity of its liquid crystal cells, to influence its optical property, produce
The raw image with different gray-levels and color.But available liquid crystal projector is mainly used for home theater, educational conference, profession
Movie theatre etc..Its cost is high, structure is complicated, is not easy to some simple liquid crystal displays in life.
The simple projector that 103809353 A of patent CN is provided, structure is simple, low cost, but its resolution ratio is low, cannot
According to the brightness regulation background color of field of employment, cause most of product not easy to use.
Utility model content
In order to solve technical problem present in above-mentioned background technique, the utility model provides a kind of adjustable background color liquid crystal
Displaying projector, this projector are additionally arranged polarisation ager liquid crystal display is forward and backward, pass through rotating polarization ager
Change the light transmission shaft of polaroid, to achieve the purpose that change background color.
In order to achieve the above object, the utility model uses following technical scheme:
A kind of adjustable background color LCD projector, including body, be disposed in the body reflective mirror, LED light,
Optically focused convex lens, liquid crystal display, projection lens, it is characterised in that preceding polarisation is equipped between the optically focused convex lens and liquid crystal display
Ager is equipped with rear polarisation ager, among the forward and backward polarisation ager between liquid crystal display and projection lens
It is fixedly connected to polaroid, the forward and backward polarisation ager can be rotated around corresponding polaroid center, for changing inclined
The light transmission axis direction of mating plate, to change the display background color of LCD projector.
Further, the forward and backward polarisation ager includes round impeller, polaroid, rotary guide, the circle
Impeller outer diameter is greater than liquid crystal display display panel full-size, and through-hole is equipped among the circle impeller, and the polaroid is circle
Shape is set in through-hole, is fixedly connected with round impeller, and the rotary guide is equipped with several, and circumferentially array is laid in circle
On one side end face of shape impeller, the circle impeller is connect by rotary guide with body, and the circle impeller and body formation can
It rotates and connects around polaroid center.
Further, the external cylindrical surface of the round impeller is equipped with standard angle graduation mark, for accurately adjusting polarisation
The rotation angle of piece.
Further, the liquid crystal display uses the positive display mode of TN/HTN class product, the forward and backward polarisation ager
It can be adjusted between 30 °~-60 °；
Further, the liquid crystal display uses the negative display mode of TN/HTN class product, and the preceding polarisation ager can
To adjust between 30 °~-60 °, the rear polarisation ager can be adjusted between 120 °~-160 °.
Further, the liquid crystal display uses VA class product, and the forward and backward polarisation ager can be at 40 °
It is adjusted between~45 °.
Further, the liquid crystal display uses the positive display mode of STN class product, and the preceding polarisation ager can be
It is adjusted between 60 °~-80 °, the rear polarisation ager can be adjusted between 0 °~-40 °；
Further, the liquid crystal display uses the negative display mode of STN class product, and the preceding polarisation ager can be
It is adjusted between 65 °~-100 °, the rear polarisation ager can be adjusted between 60 °~-110 °.
Working principle of the utility model is: LED light issue light successively penetrate optically focused convex lens, preceding polarisation ager,
Liquid crystal display, rear polarisation ager, are projected by projection lens, according to the product type of liquid crystal display and display mould
Formula, as needed or hobby rotates the round impeller of forward and backward polarisation ager to corresponding adjustable range, can be obtained
With field of employment brightness be adapted or user preferences Projection Display background color.
Compared with prior art, the utility model has the beneficial effects that 1) structure is simple, it is at low cost；2) LED cold light is used
Source as projection light source, will not height heat production, can avoid that cooling fan is installed for cooling, have compressed projection device volume, together
When reduce power consumption, because its not heat production advantage be also convenient for for a long time use；3) forward and backward polarisation ager is used, it can be according to making
Forward and backward polarisation ager angle is adjusted to adjust the display background color of needs, greatly with place brightness needs or user preferences rotation
The big use space and application field for increasing the utility model.
Detailed description of the invention
Fig. 1 is the utility model embodiment structural schematic diagram；
Fig. 2 is the front/rear polarisation ager structural schematic diagram of utility model.
In figure: 1, reflective mirror, 2, LED light, 3, optically focused convex lens, 4a, preceding polarisation ager, 4b, rear polarisation ager,
401, round impeller, 402, polaroid, 403, rotary guide, 404, angle index line, 5, liquid crystal display, 6, projection lens.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is only the utility model a part of the embodiment, instead of all the embodiments.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
As shown in Figure 1, 2, the utility model embodiment one includes body, is disposed with reflective mirror 1, LED light in body
2, optically focused convex lens 3, liquid crystal display 5, projection lens 6 are equipped with preceding polarisation toning dress between optically focused convex lens 3 and liquid crystal display 5
4a is set, rear polarisation ager 4b, preceding polarisation ager 4a, rear polarisation tune are equipped between liquid crystal display 5 and projection lens 6
Polaroid 402 is fixedly connected among color device 4b, preceding polarisation ager 4a, rear polarisation ager 4b can be around these
Corresponding 402 center of polaroid rotation, for changing the light transmission axis direction of polaroid 402, to change this LCD projector
Display background color.
Preceding polarisation ager 4a, rear polarisation ager 4b include round impeller 401, polaroid 402, rotary guide
403, round 401 outer diameter of impeller is greater than 5 display panel full-size of liquid crystal display, is equipped with through-hole among the circle impeller 401,
Polaroid 402 is circular polarizing plate, is set in through-hole, is fixedly connected with round impeller 401, and rotary guide 403 is equipped with 6, is in
Circumference array is laid on round 401 1 side end face of impeller, and round impeller 401 is connect by rotary guide 403 with body, circle
Shape impeller 401 and body are formed to rotate around 402 center of polaroid and be connected.
The external cylindrical surface of round impeller 401 is equipped with standard angle graduation mark 404, for accurately adjusting polaroid 402
Rotate angle.
Liquid crystal display 5 uses the positive display mode of TN/HTN class product, preceding polarisation ager 4a, rear polarisation ager 4b
It can be adjusted between 30 °~-60 °.
One working method of the present embodiment: the light that LED light 2 issues successively penetrates optically focused convex lens 3, preceding polarisation ager
4a, liquid crystal display 5, rear polarisation ager 4b are projected by projection lens 6, and as needed or hobby mixes colours preceding polarisation
The round impeller 401 of device 4a rotates within the scope of 30 °~-60 °, then the round impeller 401 of rear polarisation ager 4b is revolved
It goes within the scope of 30 °~-60 °, can be obtained and field of employment brightness is adapted or the Projection Display background color of user preferences.
The utility model embodiment two is basically the same as the first embodiment, the difference is that liquid crystal display 5 uses TN/
The negative display mode of HTN class product, preceding polarisation ager 4a can be adjusted between 30 °~-60 °, and rear polarisation ager 4b can
To be adjusted between 120 °~-160 °.
Two working method of the present embodiment: the light that LED light 2 issues successively penetrates optically focused convex lens 3, preceding polarisation ager
4a, liquid crystal display 5, rear polarisation ager 4b are projected by projection lens 6, and as needed or hobby mixes colours preceding polarisation
The round impeller 401 of device 4a rotates within the scope of 30 °~-60 °, then the round impeller 401 of rear polarisation ager 4b is revolved
It goes within the scope of 120 °~-160 °, can be obtained and field of employment brightness is adapted or the Projection Display background color of user preferences.
The utility model embodiment three is basically the same as the first embodiment, the difference is that liquid crystal display 5 uses VA class
Product, preceding polarisation ager 4a, rear polarisation ager 4b can be adjusted between 40 °~45 °.
Three working method of the present embodiment: the light that LED light 2 issues successively penetrates optically focused convex lens 3, preceding polarisation ager
4a, liquid crystal display 5, rear polarisation ager 4b are projected by projection lens 6, and as needed or hobby mixes colours preceding polarisation
The round impeller 401 of device 4a rotates within the scope of 40 °~45 °, then the round impeller 401 of rear polarisation ager 4b is rotated
To within the scope of 40 °~45 °, it can be obtained and field of employment brightness is adapted or the Projection Display background color of user preferences.
The utility model embodiment four is basically the same as the first embodiment, the difference is that liquid crystal display 5 uses STN class
The positive display mode of product, preceding polarisation ager 4a can be adjusted between 60 °~-80 °, and rear polarisation ager 4b can be at 0 °
It is adjusted between~-40 °.
Four working method of the present embodiment: the light that LED light 2 issues successively penetrates optically focused convex lens 3, preceding polarisation ager
4a, liquid crystal display 5, rear polarisation ager 4b are projected by projection lens 6, and as needed or hobby mixes colours preceding polarisation
The round impeller 401 of device 4a rotates within the scope of 60 °~-80 °, then the round impeller 401 of rear polarisation ager 4b is revolved
It goes within the scope of 0 °~-40 °, can be obtained and field of employment brightness is adapted or the Projection Display background color of user preferences.
The utility model embodiment five is basically the same as the first embodiment, the difference is that liquid crystal display 5 uses STN class
The negative display mode of product, preceding polarisation ager 4a can be adjusted between 65 °~-100 °, and rear polarisation ager 4b can be
It is adjusted between 60 °~-110 °.
Four working method of the present embodiment: the light that LED light 2 issues successively penetrates optically focused convex lens 3, preceding polarisation ager
4a, liquid crystal display 5, rear polarisation ager 4b are projected by projection lens 6, and as needed or hobby mixes colours preceding polarisation
The round impeller 401 of device 4a rotates within the scope of 65 °~-100 °, then the round impeller 401 of rear polarisation ager 4b is revolved
It goes within the scope of 60 °~-110 °, can be obtained and field of employment brightness is adapted or the Projection Display background color of user preferences.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (8)
1. a kind of adjustable background color LCD projector, including body, reflective mirror, LED light, poly- is disposed in the body
Light convex lens, liquid crystal display, projection lens, it is characterised in that preceding polarisation tune is equipped between the optically focused convex lens and liquid crystal display
Color device is equipped with rear polarisation ager between liquid crystal display and projection lens, the forward and backward polarisation ager centre is
It is fixedly connected with polaroid, the forward and backward polarisation ager can be rotated around corresponding polaroid center, for changing polarisation
The light transmission axis direction of piece, to change the display background color of this LCD projector.
2. a kind of adjustable background color LCD projector according to claim 1, it is characterised in that: the forward and backward polarisation
Ager includes round impeller, polaroid, rotary guide, and the circle impeller outer diameter is greater than liquid crystal display display panel
Full-size, circle impeller centre are equipped with through-hole, and the polaroid is circle, is set in through-hole, fixes and connect with round impeller
It connects, the rotary guide is equipped with several, and circumferentially array is laid on round one side end face of impeller, and the circle impeller is logical
It crosses rotary guide to connect with body, the circle impeller and body are formed to rotate around polaroid center and be connected.
3. a kind of adjustable background color LCD projector according to claim 2, it is characterised in that: the circle impeller
External cylindrical surface is equipped with standard angle graduation mark, for accurately adjusting the rotation angle of polaroid.
4. a kind of adjustable background color LCD projector according to claim 1, it is characterised in that: the liquid crystal display
Using the positive display mode of TN/HTN class product, the forward and backward polarisation ager can be adjusted between 30 °~-60 °.
5. a kind of adjustable background color LCD projector according to claim 1, it is characterised in that: the liquid crystal display
Using the negative display mode of TN/HTN class product, the preceding polarisation ager can be adjusted between 30 °~-60 °, the rear polarisation
Ager can be adjusted between 120 °~-160 °.
6. a kind of adjustable background color LCD projector according to claim 1, it is characterised in that: the liquid crystal display
Using VA class product, the forward and backward polarisation ager can be adjusted between 40 °~45 °.
7. a kind of adjustable background color LCD projector according to claim 1, it is characterised in that: the liquid crystal display
Using the positive display mode of STN class product, the preceding polarisation ager can be adjusted between 60 °~-80 °, the rear polarisation tune
Color device can be adjusted between 0 °~-40 °.
8. a kind of adjustable background color LCD projector according to claim 1, it is characterised in that: the liquid crystal display
Using the negative display mode of STN class product, the preceding polarisation ager can be adjusted between 65 °~-100 °, the rear polarisation tune
Color device can be adjusted between 60 °~-110 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920208606.2U CN209488724U (en) | 2019-02-19 | 2019-02-19 | A kind of adjustable background color LCD projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920208606.2U CN209488724U (en) | 2019-02-19 | 2019-02-19 | A kind of adjustable background color LCD projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209488724U true CN209488724U (en) | 2019-10-11 |
Family
ID=68133847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920208606.2U Active CN209488724U (en) | 2019-02-19 | 2019-02-19 | A kind of adjustable background color LCD projector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209488724U (en) |
-
2019
- 2019-02-19 CN CN201920208606.2U patent/CN209488724U/en active Active
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