TW200832043A - Projector - Google Patents

Abstract

A projector includes a projection engine section including a light source section, an image forming section for displaying an image of a desired size on an irradiated surface using light from the light source section, and projecting light corresponding to an image signal to the irradiated surface, and a housing for housing the projection engine section, wherein the projection engine section is capable of moving in the housing in a direction along a light path.

Description

200832043 IX. Description of the Invention: The present invention relates to a projector, and more particularly to a projector technology that can perform close projection of light from a position close to an illuminated surface. [Prior Art] Most of the projection projectors are popular before the popularization, in order to ensure projection

The distance between the two systems is set to a certain extent from the screen. When the projector is set to a position separate from the viewing screen, it must be ensured that there is no obstacle in the light path from the projector to the screen where there is no obstruction of light. The limit of the position of the projector: the larger the position, the larger the display. In particular, it is not easy to display a large picture when it is narrow: it is inside. Also, when displaying images, you must also think that people will not walk into the light path. In recent years, a technique of performing proximity projection by a conventional projection type projector has been disclosed. Since the projection is accessible, for example, the projector can be placed close to the wall. Since the projector can be placed close to the wall, = position within the number of turns, so the projector can be reduced to save space. In addition to the narrow interior, J,,,, and Outside the face, you can also poem Zhihe # ^ '/f i- ^ workers (three) into the light path of concern. In the case of the vehicle, the optical system with ultra-short focus is known. With the optical system of , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , In order to only have a short focus, it is necessary to hit the well that she shot first and widened the optical components. The light is transmitted through the device, for example, the lens is only used for the Lu ##本. In contrast, for example, the patent document horning...the technique that the giant 成 揭 揭 揭 , , , , , , , , 。 。 。 。 。 。 。 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 Patent Document 1 ···············

SUMMARY OF THE INVENTION Most of the projection projectors prior to the popularization of the prior art have a zoom function for adjusting the size of the face. In general, the zoom function of the projector is realized by position adjustment or the like of the optical elements constituting the optical system. The optical system of the ultra-short focus such as the composition disclosed in Patent Document 1 has a very high difficulty only in the design which can be widely angled. Therefore, it is very difficult to realize a design that further increases the zoom function in a wide-angled configuration. Even if the design of the additional zoom function is realized, the configuration becomes complicated and the cost increases. In the case of the projector of the optical system of the ultrashort focus, such as the structure disclosed in Patent Document 1, the zoom function is ensured by moving the projector body. & The projector must be moved whenever the screen size is adjusted. The constant setting of the projector is also limited. This kind of syllabus is a problem that is difficult to achieve close to projection, but also can be adjusted by the book and p + the above-mentioned questions and broadcasts. The invention is based on the above-mentioned problems. And the composition, the purpose of 1 is - and the aa 八 is in the case of k for a close projection, the projector that adjusts the size of the 匕 匕 。 。 。 。 。 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述The special feature is that it has a projection, and it is a light source of the light source of the female 丨^, and the light source part and the shirt that is used to display the desired size on the illuminated surface. For example, the light corresponding to the image signal is projected to receive the projection d, the surface, and the frame, and the XY can be moved only in the direction of the optical path in the frame by the engine unit. The distance can be changed to adjust the screen size. Since the projection engine unit is moved inside the casing, it is not necessary to move the projector after the installation. Therefore, the projector's constant fixing and zooming functions can be realized. In particular, when an optical system with an ultra-short focus is used, even if the projection engine unit accommodated in a general housing is moved, the screen size can be greatly changed. Since the optical system of the projection engine unit does not require an additional zoom function, it is not It is necessary to increase the design difficulty of the optical system and to form a continuous zoom function that can be easily recovered. Since the movable projection engine unit is available, it can be easily designed and the manufacturing cost can be reduced. Further, since the configuration is simple, it is possible to realize a high-precision and high-precision zoom mechanism. According to this, it is possible to obtain a projector that adjusts the screen size by @easy when approaching projection. A wide-angled reflection portion that widens the light. According to this, the approach projection is performed. Further, in a preferred embodiment of the present invention, the image forming portion has a wide angle of light by reflection, and the image forming portion has a projection lens;

Further, in a preferred embodiment of the present invention, the image-shaped wide-angled reflection portion allows imaging of the light from the projection lens to be wide-angled and the wide angle of light is formed. The wide-angle lens has a wide angle of light. According to this, a large incident angle can be obtained. According to this, it is possible to perform 7 200832043 close projection.敕 =, in a preferred embodiment of the present invention, the projection (four) engine can be adjusted. ... When the size of the screen is adjusted, because of the need to take the volume, the Aihua, it will take 3 weeks to complete the focus. According to this, every time the image. - The curved size 捋 can display high quality, and the preferred embodiment of the present invention is a projection lens having an optical element in the image forming portion, a illuminating sensor, and a wide-angle angle reflecting portion from the projection lens. The projection lens ', - at least one of the workers can move in the direction of the axis. According to this, the focus can be adjusted. Further, in a preferred aspect of the invention, at least one of the optical elements disposed on the wide-angle reflection portion side of the optical element is κ 动. According to this, it can be light and gentle. Ten and the composition is simple, so focus adjustment can be performed. Preferably, the image forming portion has at least one of a plurality of inverse and mirrors movable. According to this, the focus can be adjusted. This month's car has a good shape, and the image forming unit has a spatial light modulation device that modulates the image signal from the light. When the light from the light source unit is modulated by the air variator, the light source unit can emit only 2: ‘there is no need to adjust the light amount corresponding to the image signal. According to this, it is possible to easily display an image on the illuminated surface. According to a preferred embodiment of the present invention, the light source unit emits the laser light; and the image is scanned by the laser light from the light source unit to sweep the image on the illuminated surface. When the laser beam from the light source unit is scanned by the scanning mechanism and the image is displayed on the illuminated surface, the image must be adjusted by the projection lens. According to this, it is possible to easily display an image on the illuminated surface of 200832043. [Embodiment] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. (Embodiment 1) Fig. 1 is a view showing a schematic configuration of a projector 10 according to a first embodiment of the present invention. Projector 1 is a front projection projector that projects light corresponding to the image signal. The projector 10 is approaching projection from a position close to the illuminated surface, for example, a position of about ten cm from the wall surface W on which the screen 16 is disposed. The projector 1 has a projection engine unit 11. The projection engine unit 11 projects the light corresponding to the modulated image signal onto the screen 丨6 of the illuminated surface. The projection engine unit i has an optical engine 12, a projection lens 13, and an aspherical mirror 14. The optical engine 12, the projection lens 13, and the aspherical mirror 14 are housed in the projection engine unit 11, and are moved together by moving the projection engine unit 11. FIG. 2 is a view showing a schematic configuration of the optical engine 12. The red (R) light LED (light emitting diode) 21R of the solid light source is a light source unit that supplies R light. The R light from the red (R) light LED 21R is incident on the R light spatial light modulation device 23R after being collimated by the collimator lens 22. r light space light mouth Zhou Ai clothing set 2 3 R ′ corresponds to the image signal to adjust the spatial light tone of the r light, and the clothing set ” is a transmissive liquid crystal display device. The R light modulated by the R light spatial light modulation device 23R is incident on the orthogonal beam splitter 24 of the color synthesis optical system. The green (G) light LED 21G of the solid-state light source is a light source unit that supplies G light. The light from the green (G) light LED 21G is normalized by the collimating mirror 22 flat 9 200832043, and then directed toward the G light spatial light modulation device 23G. The inter-optical modulation split 23G' is corresponding to the image signal. A null-modulating device that modulates g-light, that is, a transmissive liquid crystal display device. The G light modulated by the G light by the inter-variable device 23G is orthogonal to the side different from the R light; the pupil 24 is incident.

The blue (8) light LED 21B of the solid-state light source is a light source portion for supplying B light. The B light from the blue (B) light LED 21B is incident on the B light spatial light modulation device 23B after being aligned by the collimating mirror. b Light* Inter-optical modulation device 23B is an optical modulation device that modulates β-light corresponding to an image signal, that is, a transmissive liquid crystal display device. The B light modulated by the B light spatial light modulation device 23B is incident from the side different from the r light and the G light toward the orthogonal beam splitter 24. Further, the optical engine 12 may also use a homogenizing optical system that uniformizes the intensity distribution of the light beams, such as a rod integrator, a fly-eye lens, and a superimposing lens. The orthogonal beam splitter 24 has a first split film 25 and a second split film 26 which are arranged to be substantially orthogonal to each other. The first spectral film 25 reflects the R light and transmits the G light and the B light. The second beam splitting film 26 reflects the B light to transmit the ruler light and the G light. The orthogonal beam splitter 24 combines the r light, the G light, and the B light incident from the different sides, and emits it in the direction of the projection lens π. The projection lens 13 projects the light synthesized by the orthogonal beam splitter 24. As the transmissive liquid crystal display device, for example, a high temperature polycrystalline silicon (HTPS) can be used. In the optical engine 12, the spatial light modulation device is not limited to the use of a transmissive liquid crystal display device. Space light modulation device can also use reflective liquid crystal display device (Liquid Ctysui ίο 200832043

On Silicon; LCOS), DMD (Digital Micromirror Device), GLV (Grating Light Valve), and the like. The projector 10 is not limited to the configuration in which each of the color lights is provided with a spatial light modulation device. The projector 10 may also be configured to modulate two or three color lights by a spatial light modulation device. Further, in the optical engine 12, the light source unit is not limited to the use of an LED. For the light source unit, for example, a solid light source other than the LED such as a laser light source or a lamp such as an ultrahigh pressure mercury lamp can be used. Returning to Fig. 1, the aspherical mirror 14 is disposed at a position opposed to the projection lens 13. The aspherical mirror 14 is a wide-angled reflecting portion that widens the light from the projection lens 13 by reflection, and has a curved surface having an aspherical shape. The aspherical mirror 14 has a function of widening the light from the projection lens 13 and a function of refracting light from the projection lens 丨3 toward the screen 丨6. The R light spatial light modulation device 23R, the G light spatial light attenuation device 23G, the B light spatial light modulation device 23B, the projection lens 13, and the aspherical mirror 14 use red light from the light source portion (R). The light of the LED 21R, the green (G) light coffee 21G, and the blue (b) light LED 21B is used to project and display an image of a desired size on the image forming portion of the screen of the illuminated surface. The aspherical mirror 14 can be formed, for example, by forming a reflective film on a substrate having a resin member or the like. As the reflective film, a layer of a highly reflective member such as a layer of a metal member such as aluminum or a dielectric multilayer film or the like can be used. Further, a protective film having a transparent member may be formed on the reflective film. By forming the aspherical mirror 14 into a curved shape, it is possible to simultaneously refract light and widen the angle. Compared to the case where only the projection Wei 13 is used to widen the light, the canister 13 and the aspherical mirror 14 make the wide angle of the lens 11 200832043 to make the size of the technical lens 13 smaller. The projection lens 13 and the aspherical mirror 14 image the image and the image of the screen 16. The projection lens 丨3 has a function of magnifying the image and imaging of the screen 16. The aspherical mirror 丨 4 has an enlarged function of the image. The aspherical mirror 14 can also be appropriately deformed to correct the deformation of the image. The housing 15 accommodates the projection engine unit 丨丨. The frame 丨 5 is formed to have an internal size to which the projections 1 1 can move within the frame 丨 5 . The screen is a reflective screen that reflects light from the projection engine unit 11. The screen 16 has good viewing angle characteristics since it can diffuse light in the desired range of the viewer. The projection engine unit 1 1 may be partially housed in the housing 15 and may be exposed from one of the parts of the slave engine unit 1 such as a part of the aspherical mirror 14 . A mirror for distorting the optical path may also be slanted at the door of the projection lens 13 and the aspherical mirror 14. When the optical path is curved by a mirror, the optical engine 12 is arranged to emit light toward the direction of the paper in the direction of the paper i or the direction of the paper. According to this, the projection engine portion 11 can be further disposed at a position close to the wall surface. Only the machine 1 0 is placed on the bracket κ placed near the wall W. ^ In addition, the projector 1G # can be installed on a floor, a table, a side panel, etc., because the slave machine 1 1 is small in size, so that it is easy to ensure that the projector can be placed on the wall. Near w, so you can display a large screen even in a narrow room. Fig. 3 is a view showing the optical system of the projection engine portion η in a schematic manner. The projection lens 13 is not configured to have an optical axis of approximately 12 200832043. The normal N of the screen 16 is substantially parallel to the optical axis of the projection mirror 14. Both the projection lens 13^ and the aspherical reflection have an iterative "aspherical mirror 14", which constitutes the so-called co-projection engine parts U and i, 、, 克, ^ f should be ~ like nickname modulation After the specific side travels, that is, the so-called offset optical system = "the light of the corresponding image signal is modulated with respect to the optical axis μ = the upper side of the paper of FIG. On the other hand, in the optical engine η: the positive parent splitting edge r... the exit surface imaginary shape == AX is parallel and faces the opposite side of the specific side. It is offset toward the lower side of the paper surface of Fig. 3. With such a configuration, the projection unit u injects light having a large incident angle with the screen 16. The angle of incidence is the angle formed by the normal N of the curtain 16 and the incident light. By adopting a coaxial optical system, a conventional coaxial system can be used, and the number of design steps of the optical system can be reduced, and an optical system with less aberration can be realized. The aspherical mirror 14 can be formed in a shape that is rotationally symmetrical on the optical axis, for example, a shape in which a knife other than the apex of the conical shape is cut. By forming the aspherical mirror 14 to have a substantially rotationally symmetrical shape in the optical axis ,, the optical axis of the aspherical mirror 14 can be easily made to coincide with the optical axes of other configurations. Since the aspherical inverse (four) 14 forms an asymmetrical aspherical shape, the aspherical mirror 14 can be easily and highly accurately manufactured by a simple method such as a turntable. Since the projection lens 13 and the aspherical mirror 14 are used, an ultra wide-angle 13 200832043 optical system having an image angle of at least 15 degrees or more, for example, 16 degrees, can be used. Further, since the offset optical system using only a part of the angular range of the super wide angle is used, the traveling direction of the light can be made uniform. In the case of this embodiment, for example, the minimum incident angle of the screen 16 is 70 degrees and the maximum incident angle is 80 degrees. By using the offset optical system, the angular difference of the light incident on the screen j 6 can be within about 10 degrees. r Figures 4 and 5 show a simulation of the travel of light corresponding to the modulation of the image signal. As shown in Fig. 4, the projection lens 13 uses nine spherical lenses. A spherical lens is an optical element that transmits and deflects light. By the <3 optical spatial light modulation device 23G and the B light spatial light modulation device 23β (the R light spatial light modulation device 23R is not shown) is disposed inside the orthogonal beam splitter ) The offset optical system can be realized by being vertically offset from the optical axis Ax. As shown in Fig. 5, the projection lens 13 is imaged on the firefly by the light passing through the aspherical mirror 14. Further, the configuration of the projection lens 13 is not limited to the one described in the present embodiment, and may be a configuration that can be over wide-angled. A diagram of the adjustment of the image size of the projector ig. Cast...丨. The structure is configured to be movable in a direction substantially orthogonal to the quilt in the casing 15. The direction substantially orthogonal to the glory, the direction in which the first two axes are substantially parallel, and the direction along the optical path. When the makeup is shown on the left side of the plan, the size of the main white angle is "the camera 10 displays on the screen 16 for example, the face with a diagonal size of 45 inches. At this time, the position on the side of the inner wall surface w. Shooting engine. "1 is located in the state of the frame 15, and the inside of the frame 15 is turned from the arrow showing the face of the face of the face of the face of the face of the wall 45 to the wall away from the wall w, and becomes a blank 哼 各 各 所The direction shown on the right side of the head is not shifted in the direction of the wood. The animal is in the picture, the blank arrow is right, and the projector 10 is in the firefly 14 200832043. The screen 17 is not, for example, the face with a p-inch of 67 pairs. At this time, the projection crotch portion 11 is located at a position on the opposite side of the frame body 15 from the side of the soil surface w. The screen 17 hl· % - soil showing the screen of 67 吋 is larger than the screen 16 of the screen of 45 ,, and is placed on the upper side of the vertical. In the state in which the technical engine unit 1 1 is in the state of the gold surface of the display 67, the inside of the frame 15 is moved in the direction indicated by the arrow pointing to the wall surface W in the inside of the molybdenum & The projector 10 returns to the state of the screen of «W to 〗. In this way, the projector 1 〇 can be moved by moving the projection engine unit η within the housing 15

Adjustment of the screen size between the small screen of 45仃 and the large screen of 67吋. According to the projector of the present invention, the size of the surface can be adjusted by moving the projector 10 body. The wide-range engine unit 11 can be automatically moved by, for example, by adjusting the indication of the size of the face, or by manual movement. Since the projection engine unit can return to the private movement in the direction along the optical path, it can be configured to move along the linear rail or the guide, for example. X, although this embodiment shows that the screens 16 and 17 of different sizes are prepared when displaying the small-day surface and the small screen, but any of the small screen and the large screen can be displayed on the same screen. Fig. 7 is a view showing the relationship between the distance from the projection position at which the light is projected by the projector 10 and the image size Μ & k q 豕. The vertical axis in the graph shows the height from the projection position to the display position, and the horizontal axis shows the distance from the projection position to the display position. The distance from the projection position to the display position is the distance from the illuminated surface. The 45-inch case shown by the solid line and the 67-inch bar of the 67-inch bar shown in the broken line are changed to /00 mm from the projection position to the display position. If it is the frame μ of the size that is normally used, the projection engine unit 11 is very likely to move about 100 mm. By using the optical system of the ultra-short 15 200832043 focus, the screen size can be greatly changed by the movement of the projection engine unit 11 accommodated in the normal frame 15 degree.

In the present embodiment, the maximum incident angle of the light of the screens 1, 6, 17 is, for example, 80 degrees. The distance from the wall w to the projected position depends on the angle of incidence of the light (tan 0 ). Therefore, when the movement amount ' of the projection engine portion 1 } of 45 吋 and 67 使 changes the incident maximum angle from 80 degrees to 70 degrees, it must be increased by about 2 times. In the case of the normal frame 15, it is extremely difficult to increase the amount of movement of the projection engine unit u from about 1 mm to about 2 mm. Therefore, it is preferable that the projector 10 only increases the incident maximum angle of the light of the screens 16, 17, for example, about 80 degrees or more. , ' ", y, Ai Zhong ^97 stomach £ This does not need to increase the design difficulty of the optical system and the design of the Fudan virtual π — . Because of the '... Μ 叮 叮 叮 及 及 及 及 及 及Easy to achieve zoom function. Since the heart can move the projection engine unit u, it is easy to design and reduce the manufacturing cost. Also, :: It is simple, so it can achieve high reliability and high precision.

When you approach (4), you can easily (4) the effect of W. The projector 彳Π π π _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The projection engine unit 11 is only required to be reversed between the spherical mirrors 14: the projection engine is disposed in the direction in which the projection lens is "substantially parallel to the light: the direction of the tenth, that is, the illuminated surface" When the movie is displayed, the small program is displayed when the dog program is displayed. If you want to enjoy it, you can enjoy watching music as required. 200832043 Interesting. In addition, ^ y y heart, ^ 衫 栈 stack 1 0 is not limited to 4 5 hours and 6 The size of the two sizes between the seven pairs can be appropriately set according to the configuration of the projector 10. In addition to the two types of paintings that can be switched to different sizes, the three types can be switched to different sizes. The above picture. Since the projector 10 can perform close projection, it can reduce the setting position 2 and limit the space, and save space. In addition to displaying the large surface in a narrow room, it can also reduce people's entry into the light path. Concerns: In the business and family 7 imaging machines have a tendency to increase in size, you can display the large screen of the machine to the cash. You must set the projector to a certain extent away from the screen. Narrow room Set the projector in the center of the room. It is not easy to fix the projector in the center of the room in the court. In addition, the projector must be installed in addition to the setting operation of the projector. The connection of the external device. In the projector 1 of the present invention, since the projector 1 〇 main body can be fixed at a position close to the wall surface w, the complexity of the setting and the connection can be reduced. At a position close to the viewer, the projector 10 of the present invention can be disposed close to the viewer of the wall W. Since the projector 10 is placed away from the viewer, heat or heat from the lamp of the heat source can be reduced. The effect of the fan's rotation sound on the viewer can be comfortably viewed. Figure 8 and Figure 9 are diagrams showing the focus adjustment. When the projector 1 is adjusted for the face size, it must be adjusted due to the change in the projection distance. Preferably, the projection engine unit 11 is movable in the direction along the optical path, and can be focused. The projection lens 13 is disposed on the side of the aspherical mirror 丨4. 7 200832043 The lens is arranged to move in the direction of the optical axis 。. The focus of the projection engine unit u is performed by moving the two lenses 3Q #. The f 30-type spherical lens is used. In order to transmit and deflect light, the lens is projected to have a lens other than the two lenses 3G, and the relative positional relationship with the aspherical mirror 14 is constant. For example, when the screen of 57 忖 is displayed 'As indicated by the blank arrow in Fig. 8: Two lenses 30 are arranged on the aspherical mirror 4 side of the projection lens 13. By arranging the two lenses 3〇 at the above position, the figure "blank arrow" The left side shows 'imaging on display 57 power 18. In this way, a focus adjustment of 57: egg tart < Adjust the size of the face to 9W. At this time, the two lenses are moved to the overnight aspherical mirror 14 in the direction indicated by the arrow, as shown by the lower side of the blank arrow in Fig. 8, the repulsion & ^ 2, the two lenses 30 are moved to the projection 7 The position of the other lens 31 of the two lenses 3 in the lens 13 is shifted by the two lenses 30 to the above position, as shown by the right side of the blank in FIG. 9 , the display is 91 忖 in this way, ... The second screen of the picture is imaged again. In the case of the inch adjustment, the focus adjustment is performed by moving the two lenses #1 4 ^ ^ - Η P close to the direction indicated by the aspherical mirror 14. The adjustment of the kneading size and the focus adjustment are carried out from the kneading surface. Whenever the adjustment is made: the face is cut to display the image of the high product f. 2 豸%, for example, an input operation according to an indication of focus adjustment, or a manual 'Boom' can also be linked with a projection engine for adjusting the size of the face to move the 2 lenses 3〇 , "Adjustment of the surface size at the same time 18 200832043 Automatic focus adjustment. The & engine 1 1 1 is not limited to the projection lens 3, the two lenses 3 arranged on the side of the F face mirror 1 〇 move Focus adjustment is performed. As long as the lens of one of the projection lenses 13 is moved, the movement of the aspherical mirror is placed on the side of the aspherical mirror 14 by moving the projection lens 13 The movement of the lens on the 14 side can be easily designed and the composition of the pre-existing composition can be adjusted.

At least one of the lenses of the lens can be moved. For example, a lens other than the lens disposed on the side of the aspherical mirror 14 can be moved. The machine 10 is not limited to a structure that projects light from below the illuminated surface. (4) The number 10 may be a configuration in which light is projected from above the illuminated surface. When k is projected by the upper side of the emitting surface, the projector 10 is arranged to be opposite to the upper and lower sides of FIG. When the light is projected from above the illuminated surface, the projection: 0: 0/ can be set, for example, by hanging on the top surface of the room. Since the P machine 1 of the present invention does not need to be moved after being set, it can be fixed to the top surface and the focus function is always fixed. The projector 10 may have a configuration having at least a focusing function, and the focus adjustment function may be omitted. (Embodiment 2) Fig. 1 is a view showing a schematic diagram of a projection engine unit 4 according to a second embodiment of the present invention. The projection engine unit 4 of the present embodiment can be applied to the projector 10 described above (refer to Fig. 1). The projection engine unit 4 of this embodiment. It is characterized by having H aspherical mirrors 41, 42, 43, 44. For the above embodiment " The same symbols are given to the knives to omit overlapping descriptions. The aspherical mirrors 41, 42, 43, 44 are mirrors having a curved surface of an aspherical shape. 19 200832043 The projection engine unit 40 does not have a common optical axis and constitutes a so-called eccentric optical system. The light from the projection engine unit 40 is reflected by the aspherical mirrors 41, 42, 43, and is incident on a screen (not shown). The fourth aspherical mirror 44 that reflects the light passing through the three aspherical mirrors 41, 42, 43 is a wide-angled reflecting portion that makes the light most wide-angled by the aspherical mirrors 41, 42, and 43, It has the same function as the aspherical mirror 14 (refer to FIG. 3) of Embodiment 1.

The firing engine unit 4 is the same as the projection engine unit 11 (refer to $1) of the above-described embodiment, 'by adjusting the face size in the direction of the optical path, and the engine unit 40 is made by The aspherical mirror 43 that reflects the light before the fourth aspherical mirror 44^ is adjusted as shown by the two arrows in the figure. Accordingly, in the present embodiment, a high-quality image can be displayed each time the screen size is adjusted. - It is only necessary to move the four aspherical mirrors 41, 42, 43, 44 to focus adjustment. Further, the projection engine unit 40 has a configuration of four aspherical mirrors 41, 42, and 43, and only one configuration of a plurality of mirrors. At this time, the projection engine unit 4 causes the number of reflections of the projector 10 to be less than one movement to perform focus adjustment. The scanning mechanism is a laser scanning type projector, which is provided with a current mirror forming portion, and is obtained as a shirt image forming portion in place of the image of the above embodiment by sweeping the smear and the store. The projector can also project the image onto one side of the projected screen by the flaming laser light. The so-called rear projection type projector supplies light to the other side of the screen to view the shadow of the screen 20 200832043 . As described above, the projector of the present invention is suitable for near projection. Brief Description of the Drawings Fig. 1 is a view showing a schematic configuration of a projector according to an embodiment of the present invention. Fig. 2 is a view showing a schematic configuration of an optical engine. Figure 3 is a diagram showing the optical system of the projection engine section in a schematic manner. Figure 4 is a diagram showing the simulation of the progress of the light that is modulated by the corresponding image signal. Figure 1 shows the simulation of the travel of the light that does not correspond to the image signal. Figure 6 is a diagram illustrating the adjustment of the image size of the projector. Fig. 7 is a view for explaining the relationship between the distance from the projection position and the image size. Fig. 8 is a view for explaining focus adjustment. Fig. 9 is a diagram for explaining focus adjustment. 1 is a schematic diagram showing a schematic configuration of a technical engine unit of a Shanghai-based mussel W 2 according to a second embodiment of the present invention. AX optical axis K bracket N normal line W wall surface 21 200832043 10 Projector 11 Projection engine unit 12 Optical engine 13 Projection Lens 14 Aspherical Mirror 15 Frame 16 Screen 17, 18, 19 Screen ' 2 1 R Red (R) Light LED 21G Green (G) Light LED 21B Blue (B) Light LED 22 Collimation Mirror 23R R Light spatial light modulation device 23G G light spatial light modulation device 23B B light spatial light modulation device 24 i Orthogonal beam splitting prism 25 First light splitting film 26 Second light splitting film 30, 31 Lens 40 Projection Engine section 41, 42, 43, 44 aspherical mirror 22

Claims (1)

200832043 X. Patent application garden: 1 . A projector characterized by comprising: a projection engine unit having a light source unit and light using an image light image signal from the image on the illuminated surface for displaying a desired size Projecting to the illuminated surface; and correspondingly the shadow frame body for accommodating the projection engine portion; the projection engine portion is configured to move the image shape in the optical path direction in the frame body. 2. Patent application number 1 The projector of the present invention, wherein the portion has a wide-angle reflecting portion that widens the light by reflection. 3. The projector of claim 2, wherein the projection has a projection lens; and the wide-angle reflection portion widens the light from the projection lens. 4. The projector of claim 3, wherein the projection transparency and the wide-angle reflection portion are arranged such that an optical axis is substantially uniform and the light is shifted toward a specific side with respect to the optical axis. 5. The projector of any one of claims 4 to 4, wherein the projection engine unit is capable of focus adjustment. The projector of claim 5, wherein the image forming unit has a projection lens having a plurality of optical elements, and a wide-angle reflection unit for wide-angled light from the projection 2 mirror. At least one of the aperture members of the projection lens is movable in the optical axis direction. The projector according to the sixth aspect of the invention, wherein at least one of the optical elements disposed on the side of the wide-angle reflection portion of the optical element is movable. 23 200832043 8 · The projector of claim 5, wherein the projection has a plurality of mirrors, at least one of the mirrors, such as the image of the image, such as Shen Zhu Zhi Shi, is movable. 9. For example, the projector of the Shen-Patent dry cofferdam has three projectors that will come from the umbrella, the middle, and the image. ", Shao Zhiguang corresponding to the video signal to adjust the space 1 0 · If you apply for ~ to shoot out the laser light; the projector of the first item 'where the light source part of the image forming part, the heart on the illuminated surface /, There is a scanning mechanism that scans the laser light from the light source portion to an image. XI, _ type: such as the next page.