TW200537226A - Pixel differential polygon scanning projector - Google Patents

Abstract

At least one point light beam irradiates to a multi-reflection mirror having each mirror a pixel difference increment with reference to its neighboring mirror, rotating the multi-reflection mirror to provide simultaneous horizontal scanning and vertical scanning.

Description

200537226 V. Description of the invention (1) 1. Field of the technology This technology is suitable for scanning projection devices, especially devices that scan and project light on a display screen with light scanning. 2. Prior Art Figure 1. Prior Art US Patent 5. 68 7. 0 20 The scanning projection device showing the conventional art is based on a single point light source 11 which is condensed by a lens 1 2 ′, and then a lens group 1 is used. 2 modify the focus, exit through the pinhole 1 4 and then modify it with the lens 16, pass through the polarizing plate 1 3 and then modify 2 2 ', and then modify the exit light with the pinhole 4 1. The polygon mirrors 43 and 44 perform horizontal scanning and vertical scanning. This conventional technique consists of a single point light source 11 and two sets of polygon mirrors 43, 44. The first driver 43a drives the first polygon mirror 43, the second driver 44a drives the second polygon mirror 44, and finally passes through the lens 45 and then irradiates the display screen 50. This technique is to simplify the structure of the know-how. The two sets of polygon mirrors required for the know-how are integrated into a set of polygon mirrors. The rotation of the mirror produces a horizontal scan, and the wrong angle of the mirror produces a vertical scan. Rotate the polygon mirror at one angle to complete the horizontal scanning and vertical scanning at the same time. 3. Summary of this skill

200537226 V. Description of the Invention (2) One of the purposes of this technique < one of the purposes is to develop a point angle light source with at least one point angle combined with a single angled multi-facet mirror projection system, and vertical scanning; the purpose of this technology The two mirrors simultaneously perform the method of a horizontal one with a wrong angle polygon mirror, and simultaneously complete the development of a projection device that rotates a single shot. Horizontal Scanning and Vertical Scanning 4. The content of this technique has been transformed into a cocoa-producing neighbour with the addition of raw capacity. The source is, the number of light sources in the phase contrast mirror is rich in light and the corners. The line drawing is more than five lines, and the eye is swept up. The light line is rotated to show the number of times. It shows that the water source shows one line. The light of one line is less than the light of one line. Appearance of the two sources of the suitable source phase is based on the light sequence, and the yield can be changed according to the production. At the moment, the number of lines when the line drawing is applied is less than the number of lines on one axis. There is less right line on the axis. This is an example of straightening the water curtain Fan Yun mirror on the source of the clear source, sweeping the display of the light on the display surface, and using multiple displays to shoot and set the fan to the appropriate 5. Implementation Figure 2 · Example 1 of this technique Using 40 horizontal scanning lines (η) as an example is too clear. In actual implementation, it can be based on the increase or decrease of the number of point light sources, or the increase of the number of polygon mirrors.

Article 6 200537226 V. Description of the invention (3) Decrease and increase or decrease the scanning line (H). This technique uses five point light sources in combination with an octahedral mirror. As an example, in practical implementation, more than one point light source and two or more polygon mirrors can be used to implement different combinations. The figure shows an angled polygon mirror shooting system 'taking 40 horizontal scanning lines (Η) as an example. This is based on five point light sources L1 to L5, which collectively emit five primary rays δ 1' · a polygon mirror. 6 2. It has eight reflecting surfaces (from 1 to M8), which reflects the primary light 61, generates secondary light 64, and irradiates the display screen 63; the aforementioned polygon mirror 62 is sequentially rotated by a pixel angle a relative to the rotation axis. ; When the polygon mirror 62 rotates, the aforementioned secondary light 64 generates horizontal and vertical scanning and display on the display screen. The figure shows eight reflective surfaces (M1 ~ M8) arranged in sequence, M8 is parallel to the axis of rotation, M7 ~ Ml are sequentially arranged in increments of one pixel angle, μ is directed to M8 and the tongue is deflected by one pixel; M6 is directed to M7 In other words, deflection by one pixel angle; M5 for M6, deflection by one pixel angle; M4 for M5, deflection by one pixel angle; M3 for M4, deflection by one pixel angle; M2 for M3 'deflection by one pixel angle ; For ^, ^ is offset by one pixel angle. For M8, Ml is deflected by seven pixels. = Intermediate% f, as long as the angle of the mirror is adjusted according to the foregoing method, the order of the face and brother can be changed arbitrarily, because the scan is -like ’, one rotation can also complete exactly one screen.

Page 7 200537226 V. Description of the invention (4) The ^ plane (Ml) and the fifth plane (μ) are scanned in one screen, 0, ^, the entire polygon mirror? Rotate one to achieve the same result. The point light source of the technique can be a combination of circuit design. For example, the point light source can be a single light source, such as red light, green color, or. Tri-color combined image. The first source is used to form a color projection. Figure 2 shows the scanning line ⑴ and the corresponding system.-The secondary rays 61 are arranged in a convergent manner / and the mirrors ⑷ are closed. The under-rays 64 will be focused first (see Figure 7 and beyond). The polygon mirror 62, on the reverse side, the light scan lines are distributed on the display screen 63. The scan lines on the display surface (L5) are sequentially distributed downwards. The figure does not show the mirror five (M5) and the light source one (L1). Scan line (H) distribution to light source five (with), scan line 5 ({105), 13 (H13), 21 (H21), 29 (H29), and 37 The bar (H37) is obtained by scanning and illuminating the light source one (L1) to light source five (L5) with the mirror surface five (M5). After the secondary light 64 shown in the figure is reflected from the polygon mirror 62, it will focus and then diverge. It is emitted; in actual design, the focusing position can be in front of, on the top, or behind the polygon mirror 62, in other words, it can be focused and then irradiated to the polygon mirror 62, or the focus point is placed on the polygon mirror 62 Up, or

Page 8 200537226 V. Description of the invention (5) ^ It is possible to set the focus after the reflection of the polygon mirror, without affecting the basic spirit of the art, and it is also the scope of protection of the art. f ^ 'The mirror 62 on the scanning line of Example 1 is rotated once to generate a scanning image on the display and display 6 3'. The relationship between the light source (l) corresponding to the scanning line (H) and the mirror surface (μ) . The first f-plane is H〇1 (L1, M1), which means that the first scan line (Η〇1) is generated by scanning the source one (L1) and the mirror surface one (M1). The bottom one is H4〇 (L5, M8), which means the scanning line No. 40 (Η40) is generated by scanning the light source five (L5) with the mirror surface eight (M8). This row 4. The scatter diagram shows the actual performance of this example. Lt is the source of the source, Yu Guang, and the five of the shooting techniques, L Γ \ The outgoing light 612 is arranged as shown in Figure 5.%, (15) 63 Scanning line (H) of the second embodiment shown in FIG. 4 is related to the corresponding light source (L) and the mirror (M) = the secondary light 612 radiates to the polygon mirror 62 in a divergent manner, and the reflected light, 64 is the same It has a divergent emission shape. Therefore, the lines of light source one (L1) are distributed below display screen 63, and the sweep lines of light source two (12) to light source five are sequentially distributed upward on display screen 63. The display and display polygon mirror 62 rotates once to generate a scanning daylight surface on the display ’The relationship between the light source (L) and the mirror surface (M) corresponding to each scanning line (Η)

surface

Page 9 200537226 V. Description of the invention (6) —- The first item on the top is Η 0 1 (L 5, M1), which means that the first line of the scan line (Η01) is made by light source five (Lq's jealousy & nn J brother U5) generated by scanning with mirror one (Ml), according to two people's push, the bottom one is H4〇 (L 8), table (H40). ^ ^ ^ (L1) ^ fi α (Μ8) ^ Figure 6. Example 3 of this technology-a light source (U ~ L5), the light source (L) arranged by the outgoing light 612 is the same principle. The light source u) corresponding to each scan line (H) is the same as The relationship between the mirrors is the same as that shown in FIG. 5. Figure 7 _ The fourth embodiment of the present technology shows a steering mirror 65A //, p ,, the main light exit direction = the main light ", to provide light ^ Α-4. In actual implementation, the steering mirror 65 can also be- In the light mirror of the human light 61, the direction of the light is modified.

In the secondary light projection path & L mirror (not shown in the figure), 42 groups of images are modified through the image. When the display screen 63 is an arc-shaped plane shadow "Y FREE α, Γ &, if the radian is close to the broadcast of the polygon mirror Γ: The shirt image can be displayed correctly, so there is no need to insert a modification lens to project light or When the distortion of the displayed flat image = tolerable range, it is not necessary to add a modified lens to the projection light. Figure 5 of the embodiment of the present technology shows the projection system of the present technology plus a turning mirror 65 and a display screen ^,

200537226 V. Description of the invention (7) It is placed in a box-shaped container 66 and constitutes a general product like a traditional television. The foregoing description discloses the preferred embodiments and design drawings of the technique. However, the preferred embodiments and design drawings are only examples and are not intended to limit the scope of the right to the technique. All are implemented by equal technical means. Those skilled in the art, or those implemented within the scope of the rights covered by the "Scope of Patent Application" described below, shall not deviate from the spirit of the technology but be the scope of the applicant's rights.

200537226 Simple illustration of the drawing 6. Simple illustration of the drawing Figure 1. Prior art Figure 2. First embodiment of the technology Figure 3. Scan line of the first embodiment Figure 4. Second embodiment of the technology Figure 5. Scanning of the second embodiment Line drawing 6. Third embodiment of the technique Figure 7. Fourth embodiment of the technique Figure 8 Fourth embodiment of the technique 7. Element number table Primary light 61, 61 2, 6 1 3 Polygonal mirror 6 2 Display screen 6 2 Secondary Light 6 4 Turning mirror 65 Box-type container 6 6 L1 ~ L 5 Light source one ~ Light source five Ml ~ M8 Mirror one ~ Mirror eight H01 ~ H40 Scan line 01 ~ Scan line 40 a Pixel angle

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Claims (1)

200537226 6. Scope of Patent Application '^ ~ ^ ---- 1 · An angled polygon mirror projection system includes: (1) at least one point light source that emits light once; and (2) a polygon mirror with more than two reflections Surface, reflecting one of the aforementioned four lines, and emitting secondary light; each mirror of the aforementioned polygon mirror is sequentially deflected by an angular increment of one pixel in the same direction with respect to the optical axis of the rotating person. When the aforementioned polygon mirror is rotated, Generates horizontal and vertical sweeping light. Fear < Technical shooting 2. The angled polygon mirror projection system as described in item 1 of the application # patent scope, wherein the primary light beam arrangement is selected from one of the following groups: convergent arrangement, parallel arrangement And divergent arrangement. 3 _The angled polygon mirror projection system as described in item 1 of the application range of the kiss kiss patent, further includes: a turning mirror, which is arranged in the aforementioned primary light path or the second light path of the childbirth to provide the light for turning. 〃 4 The angled polygon mirror projection system as described in item 1 of the scope of the patent application, further includes an image modifying mirror, which is placed in the aforementioned path of the secondary light to provide distortion correction of the projected image. 2. The staggered polygon mirror projection system as described in item 1 of the scope of patent application, wherein the polygon mirrors are arranged in a non-sequential order. '' ~ '6.-A kind of misaligned polygon mirror, including: having two or more reflecting surfaces, each reflecting surface is sequentially deflected and arranged in an increment of one pixel in the same direction with respect to the rotation axis; the foregoing: the mirror rotation At the same time, for the reflected secondary light, the aforementioned secondary light will simultaneously generate horizontal and vertical scanning scan display projection light on the display.