JPS61140980A - Lens holder - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to computer visual display lenses or optical elements, as well as devices for holding the lens in place in front of a display screen. In particular, the invention relates to a bracket or frame containing a device for adjusting the position and angular orientation of a magnifying, filtering or tinting lens or set of lenses relative to a screen.

BACKGROUND OF THE INVENTION Computers often feature a visual display device having a screen on which information and/or graphics are displayed. This screen is most often of the cathode ray tube type, but also includes plasma gas displays, electroluminescent flat displays,
A long screen, liquid crystal display, or other form of display.

It is well known to attach optical elements to visual display screens or to form optical elements as an integral part of the screen. Magnifying lenses are sometimes used to enlarge the size of the image produced by a visual display device. Tinted lenses are often used to change the color of the light emitted by visual display screens (hereinafter referred to as screens) in order to reduce eye fatigue. It is also known to place a fine filter over the front of the screen or to apply a coating to the front of the screen to reduce glare.

If the lens and filter are formed as an integral part of the screen or permanently fixed to the display device,
It is not possible to change the optical properties or capabilities of prior art screens.

With the rapidly expanding use of microprocessors, new applications for visual display devices are being developed every day. In many applications, more than one person is required to use a single visual display device, and many different programs are used for computers that are limited to specific screen and lens combinations. there is a possibility. The visual acuity and preferences of different users can result in a single type of lens that is satisfactory to some users and undesirable to others. For example, some users may face problems with sunlight reflecting off their screens and creating glare at certain times of the day, while users who use the same display at different times may experience poor vision. It may be necessary to enlarge the screen image to compensate.

Prior art display devices with integral lenses and filters do not provide any way to subsequently change the optical properties of the screen in the above situations.

In recent years, the amount of information that must be displayed on a screen has increased with the need to reduce the size of text.

This is true in part because most printing devices have fields that allow for a width of 132 characters, whereas most screens have fields that are only 80 characters wide. The need for display enlargement is increasing as display device manufacturers strive to further reduce text size. The new plasma gas display has an unusually fine resolution that allows characters to form on the screen with thousands of dots per 2.54aR (Li). Such plasma gas displays can form extremely small characters.

It is well known to place magnifying elements in front of a television on a stand placed on the floor in front of the television, but this type of device obstructs access to the display and interferes with the needs of various users. Since it is difficult to adjust accordingly, it is unsuitable for use in computer visual display devices.

Any number of displays or display formats may be generated on the screen by various computer programs.

Recent innovations include the advent of split screen displays, which allow the screen to be divided into two or more parts. The purpose of this type of arrangement is to fit additional data on the screen, which also results in a reduction in the size of the characters displayed on the display. Furthermore, a single magnifying lens mounted or mounted on the front of the display is not suitable for split screen display.

Magnifying lenses, especially inexpensive lenses, typically have a small amount of skew in the center of the lens, with a large amount of skew around the outer edges of the lens.

This type of distortion is undesirable for single cell displays, and even less for split screen displays, since a large portion of the display may have to be viewed through the distorted portion of the lens. With a single magnifying lens mounted or placed in front of the display, any method of adjusting the lens to position a less distorted, i.e. centered, portion of the lens over a particularly selected portion of the screen is not available. I can't do it.

These problems have been overcome by the present invention which realizes additional advantages and provides the user with the opportunity for optical element selection and adjustability of optical element positioning not previously available.

SUMMARY OF THE INVENTION The present invention relates to an adjustable visual display lens mounting system capable of holding various types of lenses, filters, and screens in place in front of the visual display screen. This device allows for interchangeable lenses that can magnify, color, or otherwise modify the image produced by the screen to suit the user's needs or the requirements of a particular program display.

The lens mount of the present invention holds the lens spaced from the front of the screen. The spacing between the lens and the screen can be adjusted to vary the amount of magnification produced by the magnifying lens. The invention also provides for directing the lens towards any part of the screen.
The lens can be moved left and right with respect to the screen and adjusted to various angles. The adjustment feature allows the use of less expensive lenses since the effects of distortion can be minimized by directing the less distorted parts of the lens towards the parts of the screen that are of interest to the user.

Another advantage realized by the present invention is the ability to provide specialized template lenses containing masks or other representations that can be used with certain programs to provide partial headings, outlines, or highlights that cannot be easily created in software. It is. Special masks or screens can be used to simplify programming and make the output more easily visible. Plagiarism of the specialized programs described above can also be reduced through the use of the specialized software and template lenses described above, but it does not prevent counterfeiters from displaying images created with the software. This is because software cannot simply be copied just because it is perfect. Copycat thieves also have to duplicate template lenses for use with the plagiarized program, which increases the cost of the plagiarized copy and thus reduces software plagiarism. It's going to stop.

According to the invention, it is possible to obtain adjacent magnifying elements, each centrally located for a portion of a split screen display. By centering this magnifying element on the split screen, the effect of any distortion of the outer edge portions of the lens elements is reduced.

The multi-cell magnifying lens can then be removed or replaced when the display is changed back to a non-split screen display.

By locating the Fresnel magnifying lens at a spaced distance in front of the screen, an additional advantage is realized in that the viewing angle of the display is narrowed. Reducing the viewing angle provides additional security because people other than the user cannot observe the viewing angle display from the outer corners. This feature makes it more difficult for people other than the user to know confidential data that is often readily available to computer users.

The adjustable lens mount of the present invention, when used with a magnifying lens in conjunction with a shell, allows the viewing angle display to be clearly read within the viewing angle from a remote location, for example across the room. When this device is used in a terminal device with a remote control device, the user can read the display from a short distance, eliminating the need for the operator to face the display screen for long periods of time. This feature reduces eye strain on the user and improves mobility while using the computer. The added mobility allows the user of the calculator to change his viewing position, thereby eliminating any neck or back discomfort from sitting in one place for long periods of time.

These and other advantages and objects will become readily apparent upon consideration of the detailed description of the preferred embodiments of the invention in conjunction with the accompanying drawings.

DESCRIPTION OF THE PREFERRED EMBODIMENTS AND OPERATION Referring now to FIG. The lens holder 10 of the present invention is shown attached to a display device 12 of a microcomputer.

As shown in FIG. 2, the lens holder 10 includes a frame 1
a lens or optical element 15 held within 6; The frame 16 is attached to a support member 18 so as to be adjustable in various directions. The support member 18 can be placed in various positions so that the lens 15 can be moved back and forth towards the screen 13. Frame 16 can also be adjusted laterally relative to screen 13 and tilted to change the angular orientation of lens 15 relative to screen 13. Anteroposterior adjustments are shown as arrows rAJ, lateral adjustments are shown as arrows rBJ, and tilt adjustments are shown as arrows "C."

Here, FIG. 3 will be described. The lens holder 10 of the present invention is shown in an exploded perspective view to show the components of the invention in detail; the clip 23 and knob 30 of the lens holder 10 are enlarged to show details thereof.

A cantilever support member 18, as shown in FIGS. 3 through 6, is disposed generally above and in front of the screen 13 to not only support the lens 15 but also to support the screen 13 and the lens 15.
Hood 1 to prevent light from hitting 5 and 5 from above
9 includes. For displays with weak contrast such as liquid crystal displays, shielding the screen from light is an important feature. The support member 18 also includes a mounting number portion 20 disposed on the display device f12. A series of holes 22 on each side of the mounting section 20 are adapted to receive clips 23 for holding the support member 18 on the display device 12. The support member 18 also has multiple ventilation slots 25 formed in the mounting section to allow for proper ventilation of the display device 12. The location of the ventilation slots 25 corresponds to the top ventilation holes of the individual display devices 12.

The frame 16 of the lens 15 is held and supported by the support member 1.
An elongated opening 27 is formed in the hood 19 to receive a pivotable bracket 28 for securing to the hood 8 . In order to reinforce the hood 19 of the support member 18, lateral flanges 29 are provided on both sides of the hood 19. Bracket 28 also connects support member 18 by side flanges 29.
mounted on top. Adjustment knobs 30 are provided on either side of the rotatable bracket 28, as will be explained in more detail below.

Here, FIGS. 3, 7, and 8 will be explained.

Clip 23 is shown to include spaced ears 34 that engage opposite sides of hole 22. Ears 34 extend from a base portion 35 that is secured to the top of display 12 by adhesive cancellous tape or other methods. The ears 34 hold the support member 18 with the clip 23;
shoulders 36 and when ears 34 are pressed together, shoulders 36
are released from both sides of hole 22. The position of the support member 18 relative to the display device 12 can be changed by simply releasing the clips 23 from the holes 22 and reinserting them into another pair of holes 22. When the support member 18 is moved to another position, the distance between the lens 15 and the screen 13 changes, resulting in a change in the magnification of the magnifying lens.

As shown in FIGS. 3, 9, and 10, frame 16 includes a front panel 31 and a back panel 32 that sandwich lens or optical element 15 therebetween. The front panel 31 and the back panel 32 are secured together by a peripheral ear 37 formed on the back panel 32 and a slot 38 formed in the front panel 31. Lens 15 is secured between front panel 31 and back panel 32 by assembling ears 37 into slots 38.

Frame 16 includes a lens cutout 40 through which lens 15 is exposed. The frame 16 is configured to retain the frame 16 within a rotatable bracket 28.
A T flange 41 is formed at the top of the flange.

The pivot bracket 28 includes an elongated slot 43 that receives the frame 16 such that the T-flange rests on top of the slot 43. The rotatable bracket 28 is secured within the support member by screws 44 on both sides of the bracket 28. A screw 44 is secured to the adjustment knob 30 and extends through an enlarged hole 45 formed in each of the side flanges 29. The screws 44 then engage threaded holes 46 on both sides of the rotatable bracket 28. 8. The pivotable bracket can be fixed in place or rotated by an adjustment knob 30, where loosening the adjustment knob 30 allows the pivotable bracket to be adjusted relative to the support member 18 and the screen 13. It can be tilted.

This provides the invention with the important advantage of being able to orient the lens 15 above or below the screen 13 according to the user's choice. Once the lens 15 is in its desired position, the adjustment knob 30 can be tightened and the frictional force it exerts on the outside of the side flanges 29 will lock the lens 15 in place. If the user wishes to view the screen without lenses 15 or optical elements, it is a simple matter to remove frame 16 from bracket 28.

Preferably, the elongated slot 43 is longer than the length of the frame 16 to allow movement of the lens parallel to the plane of the screen 13 in the direction indicated by the arrow rBJ. In this way, the lens 15 can be directed to one part of the screen or another, depending on the need to focus on one part of the screen 13.

Now, FIG. 13 will be explained. The figure shows a compound Fresnel lens that can be provided when a split screen display is used, according to a preferred embodiment of the invention. Recently, the need to increase the amount of information shown on a visual display screen has been emphasized, identifying the need to increase the amount of information shown on the screen, which necessitates a reduction in the size of the displayed text. I'm letting you do it. When a split screen display is used, the size of the characters is further reduced, but there is no peripheral distortion to the center of either display, making the use of split magnifying lenses advantageous.

In another embodiment shown in FIG. 14, a template lens 5o is shown that can be inserted between the front panel 31 and the back panel 32 of the frame 16. The display on the template lens 50 includes a bar that can be used to enhance and supplement the image created with the software.
Consists of numbers, letters, colored parts, or other marks.

The use of template lenses can simplify some software packages and reduce the amount of storage space required to execute the program by eliminating the need to program extensive display creation instructions. . Another advantage achieved by embodiments of template lens 50 is that through software replication,
In some cases, unless the template lens 50 is also duplicated, an incomplete program that is almost unusable will be created, thus preventing software plagiarism. The adjustable lens attachment of the present invention allows for precise positioning of the template lens to complement the displayed data.

The embodiments of the invention are presented by way of example and not by way of limitation, and the scope of the invention should be determined with reference to the claims.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a visual display device equipped with the improved visual display lens holder of the present invention, FIG. 2 is a perspective view of the improved visual display lens holder of the present invention, and FIG. 3 is a perspective view of the improved visual display lens holder of the present invention. FIG. 4 is a plan view of the support member of the present invention, FIG. 5 is a front view of the support member of the present invention, and FIG. 6 is a view of the support member of the present invention. 7 is a front view of one of the clips used to secure the support member to the display device, FIG. 8 is a side view of the clip shown in FIG. 7, and FIG. 9 is a side view of the lens frame. FIG. 10 is a front view of the rear panel of the lens frame, FIG. 11 is a partial plan view of the rotatable bracket for attaching the lens frame to the support member, and FIG. 12 is a front view of the bracket. A sectional view of the rotatable bracket shown in FIG. 11 with a dashed line indicating the rotation position;
FIG. 13 shows a first double Fresnel lens made in accordance with an embodiment of the invention, particularly useful in split screen displays.
FIG. 4 is a template lens made in accordance with another embodiment of the invention. 10: Lens holder 12: Display device 13:? ! Visual display screen 15: lens or optical element 16: frame 18: support device 22: hole 23: clip 28 nib bracket 43 nib slot

Claims (1)

Claims: 1) an optical element and a frame mounted around the outer periphery of the optical element, adapted to be mounted to a computer display and to separate the frame and optical element from a visual display screen; a support device extending over the front surface of the computer display to hold the optical element; a spacing device provided on the support device for varying the distance between the optical element and the visual display screen; a tilt adjustment device provided on the support device for varying the angular orientation of the optical element relative to the display screen; and a tilt adjustment device provided on the support device to allow movement of the optical element parallel to the visual display screen. A lens holder having a computer display having a visual display screen, the lens holder having a visual display screen and a lateral adjustment device. 2) The lens holder according to claim 1, wherein the optical element is a Fresnel lens. 3) A lens holder according to claim 2, wherein the optical element includes a plurality of Fresnel lenses adjacent to each other. 4) The lens holder according to claim 2, wherein the optical element includes a plurality of parallel Fresnel lenses. 5) The lens holder according to claim 1, wherein the optical element is a protection screen. 6) A lens holder according to claim 1, wherein the support device is attached at one end to the top surface of the computer display device by upstanding first and second clips, each of the clips A lens holder adapted to be received within a hole formed in the support device and selectively secured in the clip. 7) The lens holder according to claim 6, wherein the spacing adjustment device is adapted to change the position of the support device on the computer display device to move the optical element in a direction perpendicular to the screen. A lens holder having a plurality of holes provided in each clip to allow the lens to hold the lens. 8) The lens holder of claim 1, wherein the tilt adjustment device comprises an elongated bracket having a slot formed therein for receiving an end of the frame;
A lens holder, wherein said elongated bracket is rotatably supported on a support device and has a device for preventing rotational movement thereof. 9) A lens holder according to claim 8, in which the slot in the bracket is longer than the frame, thereby allowing the frame to slide along the entire length of the slot. Lens holder with adjustment device provided. 10) a substantially flat optical element, a frame disposed around the perimeter of the optical element, a support device attached to the display and extending above and in front of the screen; a display device having a screen, the display device having a frame and a bracket attached to a support device having a device for holding the optical element at a distance and having a device for selectively preventing movement of the bracket; A lens holder designed to be fixed. 11) The lens holder according to claim 10, wherein the optical element is a Fresnel lens. 12) The lens holder according to claim 11, wherein the optical element includes a plurality of Fresnel lenses adjacent to each other. 13) In the lens holder according to claim 11, the optical element includes a plurality of Fresnel lenses parallel to each other.
A lens holder that encloses the lens. 14) The lens holder according to claim 10, wherein the optical element is a protection screen. 15) A lens holder according to claim 10, wherein the support device is attached at one end to the top surface of the computer display device by upstanding first and second clips, the clips being attached to each support. A lens holder adapted to be received within a hole formed in the device and selectively secured in the clip. 16) The lens holder according to claim 15, wherein the support device accommodates each of a first clip and a second clip so that the support device and the optical element can be moved relative to the screen. A lens holder with multiple holes formed inside. 17) A lens holder according to claim 10, further comprising a lateral adjustment device for moving the optical element parallel to the screen. 18) In the lens holder according to claim 17, the slot in the bracket is formed to have a length longer than the length of the frame, so that the frame can slide laterally within the slot. A lens holder thereby providing the lateral adjustment device.