CN216118075U - Special-shaped aperture diaphragm - Google Patents
Special-shaped aperture diaphragm Download PDFInfo
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- CN216118075U CN216118075U CN202122380667.7U CN202122380667U CN216118075U CN 216118075 U CN216118075 U CN 216118075U CN 202122380667 U CN202122380667 U CN 202122380667U CN 216118075 U CN216118075 U CN 216118075U
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Abstract
The utility model provides a special-shaped aperture diaphragm, which comprises a diaphragm body, wherein the relative aperture of the diaphragm body in the horizontal X-axis direction is F2.4mm, and the relative aperture in the vertical Y-axis direction is F1.8mm; the middle part of the diaphragm body is provided with a special-shaped hole, and the diaphragm body is also provided with two direction limiting round holes which are symmetrically arranged at the left side end and the right side end of the special-shaped hole respectively; dysmorphism hole includes that the diameter is the circular port of R1 and the extension hole that is linked together with the circular port, and the extension hole includes that the tip is the circular arc portion of diameter R2, sets up the vertical portion of side end about the circular arc portion. The special-shaped aperture diaphragm can not only ensure the contrast requirement of projection, but also improve energy, thereby improving the projection effect and better meeting the projection use requirement of people.
Description
Technical Field
The utility model belongs to the technical field of photoelectric information display, and particularly relates to a special-shaped aperture diaphragm.
Background
In optical projection products, the brightness of the output is an important indicator, which in turn is closely related to the relative aperture of the optical system. In the digital projection technology of the DLP technology, the relative aperture of the illumination lens and the projection lens cannot be set at will, and the contrast of the projection image is affected by the relative aperture being too large or too small.
In general, the relative aperture of the diaphragm is F2.4mm, and for some engineering machine and education machine pairs, the requirement on contrast is not very high, only the brightness of the projection is required to be high, and the requirement can be met by taking F2 as the relative aperture of the projector. However, the diaphragm with such an aperture has a defect of insufficient energy.
To improve resolution, the TI company introduced chips with floating pixels. When the galvanometer does not work, the pixel point which can only be seen in the horizontal direction is line1 which is 2, and the pixel point line1 which can be seen after the galvanometer works is two pixels, namely 2 pixel point and 3 pixel point. When the galvanometer is not in operation, 960 pixels are horizontally arranged and 1920 pixels are horizontally arranged after floating. The vertical direction galvanometer has 540 pixels when not in work and has 1080P pixels after in work.
The space of the chip with the floating is increased in the vertical direction (Y-axis direction), but the image space aperture angle (relative aperture) of the projection lens can be increased, so that the output brightness of the projector is improved.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a special-shaped aperture diaphragm, which can not only ensure the contrast requirement of projection, but also improve energy, thereby improving the projection effect and better satisfying the projection use requirement of people.
In order to solve the technical problems, the utility model adopts the technical scheme that: a special-shaped aperture diaphragm comprises a diaphragm body, wherein the relative aperture of the diaphragm body in the horizontal X-axis direction is F2.4mm, and the relative aperture in the vertical Y-axis direction is F1.8mm;
the middle part of the diaphragm body is provided with a special-shaped hole, and the diaphragm body is also provided with two direction limiting round holes which are symmetrically arranged at the left side end and the right side end of the special-shaped hole respectively;
the special-shaped hole comprises a circular hole with the diameter of R1 and an extension hole communicated with the circular hole, and the extension hole comprises an arc part with the end part of R2 and vertical parts arranged at the left side end and the right side end of the arc part;
the size of R1 is 8.6-8.65mm, the size of R2 is 11.6-11.65mm, the circular arc part coincides with the center of the circular hole, the size of the projection of the circular arc part in the X-axis direction is 4.3mm, and the size of the vertical part is 1.5 mm.
Further, the diameter of the diaphragm body is 15.95-16 mm.
Further, the diaphragm body has a diameter of 16 mm.
Further, the distance between the centers of the two direction limiting circular holes is 12.57-12.63 mm.
Further, the distance between the centers of the two direction limiting circular holes is 12.6 mm.
Further, the diameters of the two direction limiting circular holes are both 2 mm.
Further, the thickness of diaphragm body is 1.4 mm.
Furthermore, the concentricity of the circular hole and the center of the diaphragm body is 0.03 mm.
Further, the perpendicularity of the special-shaped hole is 0.03 mm.
Furthermore, the chamfer angle of the back edge position of diaphragm body is 45 degrees, and the size of chamfer angle is 0.5 mm.
Further, the size of R1 is 8.6mm, and the size of R2 is 11.6 mm.
Further, the diaphragm body is made of aluminum alloy.
Compared with the prior art, the utility model has the following beneficial effects: the technical scheme of this application is the diaphragm on a DLP projection technology projecting lens, is applicable to DMD0.45 "WXGA chip. The relative aperture of the diaphragm body in the horizontal X-axis direction is designed according to F2.4mm, so that the contrast of a projected image can not be reduced in the vertical direction; meanwhile, the relative aperture of the diaphragm body in the vertical Y-axis direction is designed according to F1.8mm, so that the energy can be improved, and the diaphragm structure design of the special-shaped aperture diaphragm is combined by designing the relative aperture of the diaphragm body in the horizontal X-axis direction according to F2.4mm and designing the relative aperture in the vertical Y-axis direction according to F1.8mm, so that the output brightness value can be improved by 20%.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic front view of the direction limiting circular hole, extension hole, circular arc portion, and vertical portion of the present invention;
FIG. 3 is a schematic front view of the present invention;
FIG. 4 is a side cross-sectional dimensional specification of the present invention.
In the figure: 1. a diaphragm body; 2. a profiled hole; 3. a direction limiting circular hole; 4. a circular hole; 5. an extension hole; 6. a circular arc portion; 7. a vertical portion.
Detailed Description
In order to better understand the present invention, the following examples are further provided to clearly illustrate the contents of the present invention, but the contents of the present invention are not limited to the following examples. In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details.
As shown in fig. 1-4, a special-shaped aperture diaphragm comprises a diaphragm body 1, wherein the relative aperture of the diaphragm body 1 in the horizontal X-axis direction is f2.4mm, and the relative aperture in the vertical Y-axis direction is f1.8 mm;
the middle part of the diaphragm body 1 is provided with a special-shaped hole 2, and the diaphragm body 1 is also provided with two direction limiting round holes 3 which are symmetrically arranged at the left side end and the right side end of the special-shaped hole 2 respectively; the direction limiting round hole 3 is used for limiting the directions of the special-shaped hole 2 relative to the X axis and the Y axis and avoiding the deviation of the special-shaped hole;
the special-shaped hole 2 comprises a circular hole 4 with the diameter of R1 and an extension hole 5 communicated with the circular hole 4, wherein the extension hole 5 comprises an arc part 6 with the end part of R2 and vertical parts 7 arranged at the left side end and the right side end of the arc part 6;
the size of R1 is 8.6-8.65mm, the size of R2 is 11.6-11.65mm, the circle center of the circular arc part 6 coincides with the circle center of the circular hole 4, the size of the projection of the circular arc part 6 in the X-axis direction is 4.3mm, and the size of the vertical part 7 is 1.5 mm.
According to another embodiment of the present invention, as shown in FIGS. 1 to 4, the diaphragm body 1 has a diameter of 15.95 to 16 mm.
According to another embodiment of the present invention, as shown in fig. 1-4, the diaphragm body 1 has a diameter of 16 mm.
According to another embodiment of the present invention, as shown in fig. 1 to 4, the distance between the centers of the two direction-limiting circular holes 3 is 12.57 to 12.63 mm.
According to another embodiment of the present invention, as shown in fig. 1-4, the distance between the centers of the two direction limiting circular holes 3 is 12.6 mm.
According to another embodiment of the utility model, as shown in fig. 1-4, the two direction limiting circular holes 3 are each 2mm in diameter.
According to another embodiment of the present invention, as shown in fig. 1 to 4, the thickness of the diaphragm body 1 is 1.4 mm.
According to another embodiment of the present invention, as shown in fig. 1 to 4, the circular hole 4 has a center concentricity of 0.03mm with the diaphragm body 1.
According to another embodiment of the utility model, the perpendicularity of the profiled hole 2 is 0.03mm, as shown in fig. 1-4.
According to another embodiment of the present invention, as shown in fig. 1 to 4, the chamfer of the edge position of the back surface of the diaphragm body 1 is 45 degrees, and the size of the chamfer is 0.5 mm.
According to another embodiment of the present invention, as shown in FIGS. 1-4, the dimension of R1 is 8.6mm and the dimension of R2 is 11.6 mm.
According to another embodiment of the present invention, as shown in fig. 1 to 4, the material of the diaphragm body 1 is an aluminum alloy.
The working principle of the utility model is as follows: the technical scheme of this application is the diaphragm on a DLP projection technology projecting lens, is applicable to DMD0.45 "WXGA chip. The relative aperture of the diaphragm body 1 in the horizontal X-axis direction is designed according to F2.4mm, so that the contrast of a projected image can not be reduced in the vertical direction; meanwhile, the relative aperture of the diaphragm body 1 in the vertical Y-axis direction is designed according to F1.8mm, so that the energy can be improved, and the diaphragm structure design of the special-shaped aperture 2 diaphragm is formed by combining the relative aperture of the diaphragm body 1 in the horizontal X-axis direction according to F2.4mm and the relative aperture in the vertical Y-axis direction according to F1.8mm, so that the output brightness value can be improved by 20%.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent substitutions made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A special-shaped aperture diaphragm is characterized in that: the diaphragm comprises a diaphragm body (1), wherein the relative aperture of the diaphragm body (1) in the horizontal X-axis direction is F2.4mm, and the relative aperture in the vertical Y-axis direction is F1.8mm;
the middle part of the diaphragm body (1) is provided with a special-shaped hole (2), and the diaphragm body (1) is also provided with two direction limiting round holes (3) which are symmetrically arranged at the left side end and the right side end of the special-shaped hole (2) respectively;
the special-shaped hole (2) comprises a circular hole (4) with the diameter of R1 and an extension hole (5) communicated with the circular hole (4), and the extension hole (5) comprises an arc part (6) with the end part of R2 and vertical parts (7) arranged at the left side end and the right side end of the arc part (6);
the size of R1 is 8.6-8.65mm, the size of R2 is 11.6-11.65mm, the circle centers of the circular arc part (6) and the circular hole (4) are overlapped, the size of the projection of the circular arc part (6) in the X-axis direction is 4.3mm, and the size of the vertical part (7) is 1.5 mm.
2. The shaped aperture diaphragm of claim 1, wherein: the diameter of the diaphragm body (1) is 15.95-16 mm.
3. The shaped aperture diaphragm of claim 2, wherein: the diaphragm body (1) has a diameter of 16 mm.
4. The shaped aperture diaphragm of claim 1, wherein: the distance between the centers of the two direction limiting circular holes (3) is 12.57-12.63 mm.
5. The shaped aperture diaphragm of claim 2, wherein: the distance between the centers of the two direction limiting circular holes (3) is 12.6 mm.
6. The shaped aperture diaphragm of claim 1 or 2, wherein: the diameters of the two direction limiting round holes (3) are both 2 mm.
7. The shaped aperture diaphragm of claim 1, wherein: the thickness of the diaphragm body (1) is 1.4 mm.
8. The shaped aperture diaphragm of claim 1, wherein: the concentricity of the circular hole (4) and the center of the diaphragm body (1) is 0.03 mm.
9. The shaped aperture diaphragm of claim 1, wherein: the verticality of the special-shaped hole (2) is 0.03 mm.
10. The shaped aperture diaphragm of claim 1, wherein: the chamfer angle of the edge position of the back surface of the diaphragm body (1) is 45 degrees, and the size of the chamfer angle is 0.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122380667.7U CN216118075U (en) | 2021-09-29 | 2021-09-29 | Special-shaped aperture diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122380667.7U CN216118075U (en) | 2021-09-29 | 2021-09-29 | Special-shaped aperture diaphragm |
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| Publication Number | Publication Date |
|---|---|
| CN216118075U true CN216118075U (en) | 2022-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122380667.7U Active CN216118075U (en) | 2021-09-29 | 2021-09-29 | Special-shaped aperture diaphragm |
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| CN (1) | CN216118075U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023219961A1 (en) * | 2022-05-11 | 2023-11-16 | Dolby Laboratories Licensing Corporation | Projector lens apertures for projection systems |
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2021
- 2021-09-29 CN CN202122380667.7U patent/CN216118075U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023219961A1 (en) * | 2022-05-11 | 2023-11-16 | Dolby Laboratories Licensing Corporation | Projector lens apertures for projection systems |
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