61 results about "Magnified projection" patented technology

A projection optical system guiding and projecting a light beam from a projected object surface onto a projection surface in an upstream-downstream direction through a transmission dioptric system and a reflection dioptric system. An intermediate image surface of the projected object surface is positioned closer to the reflection dioptric system than to the transmission dioptric system, and an intermediate image on the intermediate image surface is formed as the final image on the projection surface via the reflecting mirrors, which include at least one anamorphic polynomial free-formed surface having different vertical and lateral powers. A light beam from the reflection dioptric system to the projection surface is guided at an angle to a normal of the projection surface and the transmission dioptric system is decentered with respect to a normal of the projected object surface, the transmission refractive elements prevented from being decentered with respect to each other.

In a projection optical system for obliquely performing enlargement projection of an image formed on a display device surface onto a screen surface, a plurality of reflective surfaces are provided, at least one of which is a curved reflective surface having an optical power. Letting the curved reflective surface, out of said at least one curved reflective surface, having the largest effective optical region be the largest curved reflective surface, the reflective surface other than the largest curved reflective surface is slightly decentered with the largest curved reflective surface kept in a fixed state so as to perform pixel shift on the screen surface in a vertical direction, or a horizontal direction, or an oblique direction, or vertical and horizontal directions within the range of a pixel pitch.

In an oblique projection optical system for performing enlargement projection from a primary image surface on the reduction side to a secondary image surface on the enlargement side, at least one reflective surface having an optical power is provided, and, assuming that of the aforementioned surfaces, the reflective surface located on the most secondary image surface side in the optical path is a first curved reflective surface, the first curved reflective surface has a portion having a positive optical power and a portion having a negative optical power.

A projection optical system that performs enlargement projection of an image on a display device surface formed of a plurality of pixels onto a screen surface, in which pixel shift by less than a pixel pitch is performed on the screen surface in a vertical direction, a horizontal direction, an oblique direction, or a vertical and horizontal directions, and in which conditional formulae (1) and (2) below are fulfilled over the entire image range: (1)|ΔΔRG|≦0.5 d and (2)|ΔBG|≦0.5 d, where d represents the amount of pixel shift (>0), ΔRG represents lateral chromatic aberration in the direction of pixel shift of colored light R having a wavelength of 640 nm with respect to colored light G having a wavelength of 546 nm, and ΔBG represents lateral chromatic aberration in the direction of pixel shift of colored light B having a wavelength of 450 nm with respect to the colored light G having a wavelength of 546 nm.

Provided is a magnified-projection optical system, which can retain a considerably long back focus although a focal length is short and which has a small chromatic aberration. The optical system comprises a projecting optical system, a relay optical system and a display element, which are sequentially arrayed from a screen side along the optical axis. The projecting optical system enlarges and projects the image, which has been linearly focused by the relay optical system, on the screen, and includes a negative group and a positive group arrayed sequentially from the screen side and having a negative optical power and a positive optical power, respectively. The optical system satisfies the following conditional relations of |Fb / F|>10 and 0.5<|F / Fp|<2.0, wherein Fb: the back focus of the whole optical system including the projecting optical system and the relay optical system, F: the focal length of the whole optical system, and FP: the focal length of the projecting optical system,

A projection optical system for performing enlargement projection from a primary image surface located on the reduction side to a secondary image surface located on the enlargement side has, from the secondary image surface side, at least two reflective surfaces. Of the first and the second reflective surface counted from the secondary image surface side, at least one has a negative optical power. At least one Fresnel reflective surface having a positive or negative optical power is disposed within the entire projection optical system.

A projection optical system capable of performing magnification projection of an image displayed on an image display surface, with a 40° half angle of view, or more includes, in an order from a magnification side: a first optical system; and a second optical system, wherein the second optical system forms an intermediate image of the image, the first optical system performs magnification projection of the intermediate image, and the following conditional expressions (1) and (2) are satisfied: 1<Ff / |Fw|<2 . . . (1), 0.4<Lf / Lw<0.6 . . . (2), where, Ff: a focal length of the first optical system, Fw: a focal length of an entire system, Lf: a distance on optical axis, from a most-magnification-side surface vertex to the intermediate image, in the first optical system, Lw: an entire length of a lens.

An exposure system for manufacturing flat panel displays (FPDs) includes a reticle stage and a substrate stage. A magnification ringfield reflective optical system images the reticle onto the substrate. The system may be a 2x magnification system, or another magnification that is compatible with currently available mask sizes. By writing reticles with circuit pattern dimensions that are one-half the desired size for an FPD, a 2x optical system can be used to expose FPDs. The designs for the 1.5x and larger magnification optical systems all typically have at least three powered mirrors. A corrector, positioned either near the reticle or near the substrate, can be added to the three mirror design to improve the systems optical performance. The corrector may be a reflective, or a refractive design. The corrector can have an aspheric surface, and optionally a powered surface. The corrector may be a flat glass plate, or a lens having concave-convex, concave-concave or convex-convex surfaces.

A projection optical system for performing enlargement projection from a primary image surface on the reduction side to a secondary image surface on the enlargement side has, from the primary image surface side, a lens optical system including two or more lens elements sharing a common rotation-symmetry axis and each having an optical power, a first reflective optical element having an optical power, and a second reflective optical element having a negative optical power. The projection optical system is non-telecentric toward the reduction side, and a prescribed condition is.

A projection display apparatus is provided that is capable of reducing speckle noise, with no image of a flaw or dust noticeable in or on a screen even if it exists in or on an optical component. The projection display apparatus includes a glass rod that makes uniform an optical beam emitted from a laser beam source; a lens that focuses an optical beam passing through the glass rod; a diffusion layer that provides an optical path difference distribution to the optical beam focused using the focusing element, the diffusion layer being optically conjugated with an incident end of the glass rod by the focusing element; a display device that spatially modulates the optical beam provided with the optical path difference distribution by the diffusion layer; and a magnification projection lens that projects on a screen an optical beam modulated by the modulator.

A projection lens unit of a projection television (TV) includes a first lens group for focusing an image incident from an image generating source, a reflection mirror for reflecting the image projected from the first lens group, and a second lens group having the same optical axis as the optical axis of the first lens group for magnifying and projecting the image reflected from the reflection mirror to a screen. The first and second lens groups are installed in first and second single bodies, which are coupled to a third single body having the reflection mirror to reflect the image incident from the first single body to the second single body. By this arrangement, the focus of the projection lens unit is easily adjusted and the lens groups are conveniently coupled to each other. In addition, a defocused state of the projection lens unit can be easily minimized.

A projection system including: a projector that modulates the light emitted from a light source according to image information to form an optical image and projects the image in a magnified form; and a computer connected to the projector via a signal input and output terminal, wherein the projector projects the image according to the image information output from the computer. The projector includes: an adjustment operation section that adjusts the settings of the projector; an adjustment operation identification section that identifies the adjustment operation indicated by an adjustment signal output from the adjustment operation section; an adjustment-signal generating section that generates an adjustment signal on the basis of the adjustment operation identified by the adjustment operation identification section; and a two-way communication section that sends the generated adjustment signal to the computer, and receives a signal from the computer. The computer includes: a two-way communication section that receives the adjustment signal from the projector, and sends a signal; and an image processor that processes the image signal to be output according to the received adjustment signal.

A projection system including a light source, a polarization conversion system, a reflection mirror, a color separator, a scrolling unit, a light valve, and a projection lens unit is provided. The polarization conversion system includes an incidence plane through which light emitted from the light source enters, and transmits a beam with a first polarization from the light entering through the incidence plane and reflects a beam with a second polarization toward the incidence plane and then changes the polarization of the reflected beam. The reflection mirror reflects the light emitted from the polarization conversion system through the incidence plane back toward the incidence plane. The color separator separates an incident beam according to color. The scrolling unit scrolls the color beams. The light valve processes an incident beam according to an image signal and forms a color picture. The projection lens unit magnifies and projects the color picture onto a screen.

A red, green and blue light beams from light sources (301, 302, 303) are dimmed, respectively, by light valve units (317, 319, 321) of a light valve (304), and enter a color combiner system (305). The color combiner system (305) comprises three prisms (325, 326, 327) with apical angles of 30 degrees, which are connected through dichroic mirror surfaces (328, 329). Beams of colored light incident on the respective sides of the prisms are combined in the color combiner system (305) and leave from exit side (332) of the prism (327). The optical lengths from the incidence sides to the exit side (332) are substantially the same for all the colors. The combined light is projected through a projection lens (306) onto the screen in a magnified scale. This projection display produces high-quality images while it is small-sized and inexpensive.

The present invention provides a zoom lens that suppresses the generation of unnecessary light and is suitable for a projection lens. The zoom lens is used as a projection lens of a projector in which a prism is located between the projection lens and a spatial optical modulating element B. A lens closest to the spatial optical modulating element B is a meniscus positive lens whose convex surface faces a screen. A refractive index of the meniscus positive lens is 1.75 or more.

The invention discloses an optical fiber scanning projection objective lens and optical fiber scanning projection equipment. The optical fiber scanning projection objective lens comprises six lenses and a diaphragm which are arranged on a common optical axis. The optical fiber scanning projection objective lens comprises, sequentially from a position facing a projection image surface, a first lenswith negative focal power; a second lens with positive focal power; a diaphragm, a third lens with negative focal power, a fourth lens with positive focal power; a fifth lens with positive focal power and a sixth lens with negative focal power, wherein the fifth lens and the sixth lens are combined to form a lens set with positive focal power. Due to the fact that the technical scheme of positiveand negative lens separation and meniscus lens is adopted, the optical fiber scanning projection objective lens in the embodiment of the invention can be used for correcting the curved surface imageoutput by the optical fiber scanning. The problem that the curved surface image output by the optical fiber scanning is large in field curvature after being amplified and projected is avoided, and thevisual effect of the optical fiber scanning to a user is guaranteed.

The present invention provides a projection image display device capable of suppressing trapezoidal distortion even when an image is obliquely enlarged and projected on a screen, and a projection optical unit used therefor. In the projection type image display device that enlarges the image on the image display element (1) through the projection lens (2), and displays the enlarged image by oblique projection relative to the screen (6), the projection lens (2) and the back mirror (5 ) are disposed between free-form surface mirrors (3, 4) having a free-form surface for correcting trapezoidal distortion produced by oblique projection of the enlarged image, and the surface shape is formed, and light rays placed at the upper end of the enlarged image are refracted by the free-form surface And the distance to the screen is L1, the light at the lower end of the enlarged image is refracted by the free-form surface and the distance to the screen is L2, and the distance from the upper end to the lower end of the picture on the screen is Dv, at least satisfy: |L1-L2 |>0.4·Dv.

The invention discloses a bronzing plate installation method. The method includes the following steps: (1) photographing printing paper; (2) amending original bronzing design files; (3) preinstalling bronzing plates and magnifying projection; (4) moving and adjusting the bronzing plates; (5) accurately positioning and fixing the bronzing plate. Precise installation of the bronzing plates is finished at one time by taking into consideration deformation of printing paper and thermal expansion of perforated plates in advance, amending deformation of printing paper and thermal expansion of perforated plates in installation files to obtain bronzing plate installation standard files and correcting installation positions of the bronzing plates during installation according to the bronzing plate installation standard files, and the drawback that the bronzing plates have to be tested and adjusted repeatedly after installation is overcome; in addition, the installation process of the bronzing plates is amplified by real-time photographing of a camera, so that installation operation of the bronzing plats is more visual and clear, difficulty in installation of the bronzing plates is lowered, and accuracy and efficiency in installation of the bronzing plates are improved.

The invention discloses a projection interaction method, a projection interaction device and an intelligent terminal. The method comprises steps as follows: receiving a gesture image captured by a camera in a projection process; acquiring a projection image at the same moment with the gesture image, and magnifying the projection image to the same size with the gesture image; comparing the magnified projection image with the gesture image, and cutting different areas of the two images to serve as target areas; performing static gesture recognition on the target areas, extracting gestures in the target areas, and matching the gestures with preset gesture templates to obtain commands corresponding to the gestures; controlling the projection process according to the obtained commands. Only the target areas are subjected to gesture recognition processing, so that image processing area is greatly reduced, image processing time is shortened, then the gesture recognition efficiency is improved, the problem of time delay caused by the fact that the corresponding commands are executed through gesture recognition is effectively solved, and user's experience is enhanced.

A zoom lens having three or more groups of lenses. When viewed from the long conjugate distance side, a first lens group (11) having a positive refractive power and a second lens group (12) having a negative refractive power are arranged in order of mention. Among the lenses of the second lens group (12), the first lens (12a) from the long conjugate distance side has a positive refractive power. With this, the distortion aberration is reduced to a low level.

This projection optical system (100) for enlarging and projecting an image of an image display element (130) on a surface to be projected on (SC), is provided with a transmission optical system (110)and a reflection optical system (120). The transmission optical system (110) includes a plurality of lenses and an aperture diaphragm. The reflection optical system (120) includes: a first reflectionsurface which reflects emission light from the transmission optical system (110); and a second reflection surface which reflects emission light from the first reflection surface. The surface to be projected on (SC) is not parallel to the display surface of the image display element (130). The main beam of a reference beam (R) is a beam which passes through the center of the aperture diaphragm among beams projected to the nearest side of the projection optical system (100) on the surface to projected (SC). Local power on the first reflection surface at a location at which the main beam of the reference beam (R) is incident to the first reflection surface is stronger than local power on the second reflection surface at a location at which the main beam of the reference beam (R) is incident to the second reflection surface.

The present invention provided a technic of eliminating the brightness uneven of a projection image in a visual display unit of projecting the image light to the rear projection screen and amplifying the projection image. The Fresnel lens sheet is provided with a first prism group in an area of a light entrance plane of the Fresnel lens sheet where the incident angle of light is equal to or more than a predetermined incident angle and a second prism group in an area of a light entrance plane of the Fresnel lens sheet where the incident angle of light is less than the predetermined value. The first prism group contains the first plane of refraction which refractes the light whose incident angle is equal to or more than a predetermined incident angle, and the first complete reflective surface which reflects the light refracted by the first plane of refraction and leads the light to the emergente side of the Fresnel lens. The second prism group contains the second plane of refraction which refractes the light whose incident angle is less than the predetermined value and leads the light to the emergente side of the Fresnel lens, and the second complete reflective surface which reflects a part of light refracted by the second plane of refraction and leads the light to the emergente side of the Fresnel lens.