TWM252023U - Head-mounted display - Google Patents

Description

M252023 V. Creation Instructions (1) This creation relates to a head-mounted display optical system, which consists of a semi-transparent and a λ / 4 (quarter-wavelength) lens. The above-mentioned type of device can know that the head-mounted display panel described in the document is formed, and the image is projected onto the pupil of the user and the user's retina of the user of the head-mounted display by the pupil. The display, for example, television or video system, computer or computer simulation related viewing in a known head-mounted display, includes a first lambda element and a polarizer in order. The lenticular lens can be curved through the lens element three in order to reduce the size of the lens, and a polarizing coating is then applied together. A viewing angle of a known head-mounted display is limited. One of the goals of this creation is the upgraded head-mounted display. The device, such as the display device in the scope of patent application, is equipped with an image display device and a mirror, a lens element, and a polarizing element plate to combine the light beams so that the formed image is projected to a user's view of Europe Patent application EP 0 7 1 8 6 45. In the monitor, an image is made by a liquid crystal imaging optical system and passed through the retina of the head-mounted display. When in use, the exit pupils coincide, so that an image is formed on the head-mounted display and worn by the user, a frequency image or an image associated with portable information and communication. The optical system reflects from the image display device / 4 board, a half-transmissive mirror, and a lens element to achieve the amplitude of the formed image. In addition, the first surface of the polarizer has optical imaging errors. To obtain the deflection on the curved surface. Defects are the images that users observe. Provide a perspective for users to observe the images. This goal is achieved according to the definition in item 1 of this creation. This structure

O: \ 69 \ 69139.ptd Page 4 V. Creative Instructions (2) One ^ ________, the advantage is that the magnification is now B i, two f, and a curved mirror can be produced depending on the shape of the semi-transmissive mirror. The combination of a flat mirror and a lens element can be higher; there is a semi-transmissive coating, which can be used. Moreover, the semi-transmissive mirror is to be set in a uniform or simple manner. To make the polarizer. 'Z can easily be laid in the scope of a patent. Further advantageous specific examples are defined in the scope of the r% patents, which are the basis of the original creation.叩 Favorable specific examples, defined in the posterior root, the optical axis of the 的 / 4 plate of this creative headset is a special specific example of ϊ, which is characterized by the achromatic transmission suppression, and the optical axis of 4 plates intersects . This is the measure, 'may; :: so that the contrast of the image is enhanced. Gain =. The European patent application EP 0803756 according to the present invention is a head-cut aperture polarizer according to the present invention which can transmit a line 2 outward. The specific example 'I is characterized by the first polarization direction; the second polarization direction system; For example, the polarizing element is 3 or 2. The example of the second polarizer is a reflection enhancement foil. " Let's say that another specific example of the "double-brightly-carved head-mounted display" created by 3M Company is "Special Features". The brother is made of a flat concave lens. For example, such a 2 'concave surface It is oriented towards the second λ / 4 plate. The concave surface of the semi-transmissive mirror becomes the magnified virtual image of the display device. Moreover, the practice of a flat-concave lens using a head-mounted display is also the reason.你 你 ro. ^ O: \ 69 \ 69139.ptd M252023 V. Creation Instructions (3) ~ ^ A specific example of a head-mounted display based on this creation has the feature that the head-mounted display consists of a first and / 4 plates, lens elements and semi-transparent j-mirrors are integrated optical elements. Integrating optical components in one optical-piece ten 'simplifies the assembly operation of the head-mounted display during the manufacturing process. The $ 2λ / 4 plate and The polarizer can also be integrated into a single optical element. Λ Another specific example of a head-mounted display according to the present invention, which has a feature that the 5 head-mounted display includes at least one optical element with a sub-spherical surface. Aspherical surface is used )of Learning components can reduce image errors such as coma aberration, astigmatism, and field curvature.% A specific example of a head-mounted display based on this creation, featuring the first and second; I / 4 board It is achromatic. The chromatic aberration phenomenon in the image is reduced by ^ these λ / 4 plates. Another specific example of the head-mounted display according to the present invention has the feature of the second; the 1/4 plate and the polarizer have Curved surface. If necessary, or ^ enhance the resolution or increase the magnification factor. ~ ^ These and other aspects of this creation can be understood from the description below, and are explained with reference to specific examples. 'In the diagram: Figure 1 shows a A specific example of a head-mounted display according to the present creation, and FIG. 2 shows an example of a head-mounted display in which a part of the optical system is integrated.

FIG. 1 shows a first specific example of a head-mounted display 100 according to the present invention. FIG. 1 shows only a fragment of the head-mounted display, including an image display device. For example, a transmissive liquid crystal image display panel 101

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M252023 V. Creative Instructions (4) Ming unit (not shown) and an optical system. Viewed from the image display panel 101, the optical system includes a first / fourth plate 103, a plano-concave lens 107, a semi-transmissive mirror 105 disposed on the concave surface of the plano-concave lens 107, and a second; 1 / 4 板 109 和 同 Polaroid 111. The concave surface of the plano-concave lens 107 faces the second λ / 4 plate. The transflective mirror 105 is provided on a concave side of the plano-concave lens 107. The polarizer 111 includes, for example, a reflective polarizing plate of a double brightness enhancement film (DBEF) type, and is sold on the market at 3Mτµ. The optical system projects an image formed by the transmissive liquid crystal display panel 101 onto a retina using a human eye. Figure 1 shows the radiation path of one pixel of the display panel. When the head-mounted display is active, the radiation of the image formed by the liquid crystal display panel 101 will be projected onto the first long panel 4. The first / 4 plate 103 converts the polarized radiation in the first direction into cyclically polarized radiation, such as right-handed polarized radiation, which is projected onto the semi-transmissive mirror 105 through the lens 107. The semi-transmissive mirror 05 transmits' partially " right-polarized radiation to the second / 4 plate 109. The second long / 4 plate 109 transforms the right-handed polarized radiation into a light beam polarized in a second direction; the second polarization direction is transverse to the first polarization direction. The 'polarized' radiation in the second direction is then projected onto the reflected polarizer U1. The reflective polarizing plate 111 reflects all radiation polarized in the second direction back to the second; 1/4 plate 109. Because the reflective polarizing plate reflects all the radiation polarized on the second side, there is no need for an additional polarizer, as is the case with known head-mounted displays. The second λ / 4 plate 1 〇9 will transform the radiation polarized on === into a right-handed polarized radiation; the latter will hit the concave semi-transmissive mirror 105. The semi-transmissive mirror 105 will partially

M252023 V. Creative Instructions (5) The radiation of right-handed polarization is reflected to this second / 4 plate 109, and the right-handed polarization is changed to left-handed polarization. The left-handed polarization is again projected on the second λ / 4 plate 109, which converts the left-handed polarization radiation 'into radiation polarized in the first direction. The radiation polarized in the first direction is then projected onto the reflected polarizing plate 丨 i. However, the reflected polarizing plate 11 transmits the radiation, which is now polarized in the first direction, to the eyes of the user (not shown). The optical axes' of the first and second / 4 plates are both at 45 with the first polarization direction. At an angle. In order to obtain achromatic transmission suppression to enhance the contrast of the image, the λ / 4 plates 103, 109 can be arranged in a way that the optical axis of the first λ / 4 plate 103 is transverse to the second; 1 / 4 plate 109 optical axis. The arrangement of the first and second optical axes 103, 109 is known from the cited European patent application EP 0 803 756. A head-mounted display in which the optical axis of the first λ / 4 plate is not used to cross the optical axis of the second person / 4 plate, instead of the first with an achromatic; the 1/4 plate and the second with an achromatic A λ / 4 plate, in which the direction of the optical axis and the first polarization direction are at an angle of + 45 °. Achromatic; I / 4 boards are on the market, for example, sold as "Bernhard Halle Nachf · GmbH & Co". For example, the concave surface of a plano-concave lens, one with a diameter of 1 inch and a 3 meter The image display panel at a distance can obtain a magnification of 150 times. As a result, the user has a viewing angle of 64 °. To reduce image errors, such as coma aberration, astigmatism, and field curvature It is preferable to make a plurality of optical elements in the specific examples of the above-mentioned head-mounted display into a curved sub-spherical surface, for example, the semi-transmissive concave mirror

O: \ 69 \ 69139.ptd Page 8 M252023 V. Creative Instructions (6) 1 0 5 The curved surface. To simplify the assembly of the head-mounted display, a plurality of optical elements, such as 丄 = first and / 4 plates, the lens element and the half mirror are integrated into an optical element. FIG. 2 shows an example of a fragment of a head-mounted display according to the present invention, including, for example, an image display device, a transmissive liquid crystal display panel 1 and an optical system. The optical system includes an integrated optical module 202, a second / 4 plate 2 09 and a polarizer 211. Among them, the first / 4 plate, the lens element 207, and the transflective mirror are in order. 05, integrated along the optical axis of the optical system. The semi-transmissive mirror 2005 is composed of a semi-transparent metal layer, for example, a thin aluminum layer, and is disposed on the side | concave surface of the first lens element 207. The first / fourth plate 203 is, for example, a another / fourth foil, and is laid on the first surface of the first lens element 207. In addition, the second / 4 plate 2 0 9 and the polarizer 21 1 are, for example, borrowed from this; the I / 4 plate 2 0 9 is provided with a DEEP type reflective polarizer, which can be integrated in a second integration Optical element. The lens element 207 can be made of glass or polymethyl methacrylate (PMMA). When the head mounted display is in operation and worn by a user, the radiation of one pixel of the image formed by the liquid crystal image display panel 201 will be projected on the first λ / 4 plate 203. The missing angle between the optical axis of the first λ / 4 plate 203 and the first polarization direction is, for example, + 4 5. . The first; 1/4 plate 20 03 converts the radiation polarized in the first direction into cyclically polarized radiation, for example, a right-handed polarized radiation, which is incident on the semi-transmissive mirror 205 through a lens element 2 0 7 on. The semi-transmissive mirror 205 transmits part of the right-handed polarized radiation to the / 4 foil 209. The optical axis of this / 4 foil 209

O: \ 69 \ 69139.ptd Page 9 M252023 V. Creative Instructions (7) The first polarization direction extends at an angle of --45 °, and thus crosses the optical axis of the first and fourth plate 203 . The Λ / 4 box plate 009 transforms the right-handed chain polarized radiation 'into a polarized radiation in a first direction. The radiation polarized in the first direction is then projected on the reflective polarizing plate 2 1 1. The reflective polarizing plate 2 11 reflects all the radiation polarized in the first direction through the λ / 4 foil 2 0 9 and reflects back to the semi-transmissive mirror 2 0 5. The λ / 4 foil 209 converts the radiation polarized in the first direction into a right-handed polarized radiation, and the radiation is projected on the concave semi-transmissive mirror 2005. The semi-transmissive mirror 205 reflects a portion of the right-handed polarized radiation back to the 1/4 foil 209 'and changes the right-handed polarization to left-handed polarization. The I / 4 foil 209 transforms the left-handed polarized radiation into polarized radiation in a second direction that is transverse to the first polarization direction. The radiation polarized in the second direction is then projected onto the reflective polarizing plate 21 1 again. However, the polarizing plate 211 transmits radiation, which is now polarized in the second direction, to a user's eyes (not shown). Instead of a head-mounted display, the optical axis of the λ / 4 plate intersects the second; the optical axis of the 1/4 plate replaces the first and 4 plates with an achromatic and an achromatic The second λ / 4 plate, wherein the direction of the optical axis and the first polarization direction are included at an angle of + 45 °.

O: \ 69 \ 69139.ptd Page 10 M252023 Schematic description of the diagram and component symbol description Figure 1 shows a specific embodiment of a head-mounted display according to this creation; Figure 2 shows an example of a head-mounted display, in which the optical Part of the system is integrated. 100 Head-mounted display 10 1 LCD image display panel 103 λ / 4 plate 105 Transflective lens 10 7 Plano-concave lens 1 09 λ / 4 plate 111 Polarizer (polarizing plate) 20 1 Transmissive liquid crystal display panel 2 0 2 Optical component 203 λ / 4 plate 205 transflective lens 2 0 7 lens element 2 0 9 λ / 4 plate (foil) 2 11 polarizer (polarizing plate)

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Claims (1)

M252023 Case No. 91200544 I patent application scope 1. A head-mounted display optical system includes a plate and a partial system, the second λ / 4 optical system is the second type and is arranged in the transparent 2. The root λ / 4 3 The root polarizer can be linear to the 4. The root wear shows λ / 4 plate 5. The root wear shows λ / 4 6. The root wear shows 7. The root one and the 8. root λ / 4 system 'The λ / 2 plates and columns, among which the optical element of the mirror element is applied for the special plate and the optical axis of the concave surface is based on the optical axis. The optical axis has an image display device and an optical system semi-transmissive mirror, a lens element, and a second mirror. When the λ / 4 plate of the image display element, the lens element, and the semi-transparent polarizer are connected to another rear-view element as a plano-concave mirror, and the semi-transparent side. The head-mounted display surrounding item 1, wherein the optical axis crossing the second λ / 4 plate surrounds the head-mounted display covering item 1, wherein a linearly polarized light beam is transmitted to a first polarization direction 'and to a second Polarization direction; the second polarizer polarizes the first application package, the application plate and the application package include λ. According to the application plate and the beam polarization, please include a lens. For the 4th board, please set up the first and the first to view the mirror, the square mirror set on the surface • The 0th and the second can reflect in the vertical direction. The head-mounted display according to claim 1, wherein the head is an integrated optical element, and the optical element includes the first element and the semi-transmissive mirror. The head-mounted display according to item 1 of the utility model, wherein the polarizer is integrated into one. The head-mounted display according to item 1 of the present invention, wherein the head has one optical element with a sub-spherical surface. The head-mounted display of the first range of interest, wherein all of the first range are achromatic. The head-mounted display of item 1 of the utility model, wherein the mirror has a curved surface. O: \ 69 \ 69139-930729.ptc Page 12