JP2005292591A - Display device and camera - Google Patents

Abstract

To provide a display device that can be naturally felt by a user without losing quality.
An LCD 57 that is a display element having a display pattern (43 to 48) that transmits light, an LED 52 that is a light emitting element, and a back side of the LCD 57, and reflects light from the LED 52 toward the LCD 57 side. A light guide 55 having a plurality of reflecting portions 55b is provided.
The light guide 55 includes a first area corresponding to the display patterns (43 to 47) other than the specific display pattern (48) in the LCD 52, and a second area corresponding to the specific display pattern (48). And the formation density of the reflection portions 55e in the second region is higher than the formation density of the reflection portions 55d in the portion close to the second region in the first region.

Description

  The present invention relates to a display device having a transmissive LCD and an illumination source.

  Conventionally, display devices configured with a backlight so that a transmissive or transflective LCD can be viewed in a dark place have been widely commercialized. This display device uses an LED as an illumination source, and can illuminate the entire surface of the LCD via an acrylic light guide plate, thereby realizing low cost and high quality. ing.

  Specifically, a light guide plate is placed on the back of the LCD, and LED light is incident from the side of the light guide plate. This light guide plate has a function of performing a matting process on the surface opposite to the LCD to reflect the light flux from the LED to the LCD side.

  However, if the matte surface is uniformly provided on the entire surface, the light becomes brighter if the distance from the LED is shorter, and darker if the distance is farther, resulting in unevenness in brightness. In order to prevent this, the dots formed on the matte surface are sparse near the LEDs, and the dots are densely arranged far away so that the brightness on the LCD looks high-quality without unevenness. . An example in which these are applied to a finder display device will be described with reference to FIGS. 7 and 8. FIG.

  FIG. 7 is a developed perspective view from the back showing the configuration of the finder LCD unit. Hereinafter, the configuration of the finder LCD unit will be described in the order of assembly.

  Reference numeral 71 denotes a finder LCD holder. First, the finder FPC 73 on which the finder LED 72 is mounted is dropped, and then the reflection sheet 74 and the light guide 75 are dropped. An anisotropic conductive rubber 76 is inserted into a gap formed by the finder LCD holder 71 and the light guide 75. A finder LCD 77 is placed on these and pressed by a pressing plate 78. At this time, the anisotropic conductive rubber 76 is compressed to produce conductivity, and the finder FPC 73 and the finder LCD 77 are electrically connected.

  When a finder FPC 73 is energized to drive the finder LCD 77 by a camera control circuit (not shown), a predetermined mark is lit or blinks on the finder LCD 77.

  At the same time, when the viewfinder FPC 73 is energized to drive the viewfinder LED 72 by the camera control circuit, the viewfinder LED 72 is turned on, and the light illuminates the end face 75 c of the light guide 75. Light incident from the end surface 75c is reflected by the mat surface formed on the back surface and is emitted to the viewfinder LCD 77 side. Further, the light that has passed through the mat surface is reflected by the reflection sheet 74 and returned to the light guide 75 again. In this way, it functions as a backlight for the finder LCD 77.

  FIG. 8 is an enlarged rear perspective view of the light guide 75. Reference numeral 75a denotes an incident portion which is formed so as to cover the finder LED 72 so as not to leak the emitted light. Reference numeral 75b denotes a matte surface, which is subjected to a matting process by repeating the dot portion 75d only in an area that needs to be irradiated with light. Since the light incident from the incident part 75a is diffused, the light density decreases as the distance from the incident part 75a increases, and the brightness of the reflected light also decreases. However, this will deteriorate the visual quality of the viewfinder display. Therefore, in order to correct it, the density of the dot portions 75d is increased as the distance from the incident portion 75a is gradually increased so that the apparent brightness in the viewfinder becomes uniform.

In addition, in order to increase the brightness of the display unit, a reflective surface is provided by leaving a portion corresponding to the LCD display character on the light exit surface of the light guide plate, and the brightness is improved by reusing the light directed to other than the character part. The idea which increases is given (refer patent document 1).
JP-A-11-283425 (paragraphs 0017 to 0019, FIG. 1, etc.)

  However, in the above-described conventional example, the formation of the reflective surface by the mat causes the graininess of the dots to appear as a display in the case of a display pattern having a large mat (dot) and a large display area, which impairs the quality. However, there is a limit to make the dots finer, and if the dots are made too fine, it becomes difficult to control the molding of the light guide plate, and the processing cost increases.

  In addition, the method of increasing the efficiency by providing a reflective surface other than the character portion cannot increase the efficiency much if the display interval is narrowed to increase the amount of information.

  Especially in the viewfinder display of the camera, in order to enlarge the display of a narrow area with the viewfinder eyepiece optical system, the correction as described above (the dot density is increased as the distance from the incident part is gradually increased, and If the correction is performed so that the brightness of the image becomes uniform, a display pattern with a large display area laid out near the incident portion has a problem that the dots can be seen through.

  Further, depending on the function of the display pattern, it is necessary to display it brightly with respect to other displays so that the user can recognize it.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a display device that can be naturally felt by a user without deteriorating the quality.

  The display device of the present invention includes a display element having a display pattern that transmits light, a light emitting element, and a plurality of reflecting portions that are arranged on the back side of the display element and reflect light from the light emitting element to the display element side. Light guide.

  The light guide has a first region corresponding to a display pattern other than the specific display pattern among the light emitting elements, and a second region corresponding to the specific display pattern, and the light guide has a reflection portion in the second region. The formation density is higher than the formation density of the reflective portion in the portion of the first region adjacent to the second region.

  According to the present invention, since the formation density of the reflection part in the second region is higher than the formation density of the reflection part formed in the adjacent first area, the reflection density is provided corresponding to the first area. The specific display pattern corresponding to the second area can be displayed brighter than the other display patterns.

  Furthermore, since the formation density of the reflection parts in the second region is high, it is possible to reduce unnaturalness due to the reflection parts being visible through the specific display pattern. Therefore, a display device capable of displaying a high-quality display pattern is realized.

  Examples of the present invention will be described below.

  1 is a rear perspective view of the camera, and FIG. 2 is a front perspective view. Reference numeral 1 denotes a camera, and 2 a back cover, which is fixed to the camera body so that it can be opened and closed by being rotated by a hinge (not shown). Reference numeral 3 denotes an opening knob, which is configured to open and open a latch mechanism (not shown) by operating the opening knob 3. Reference numeral 4 denotes a film confirmation window for confirming the presence / absence of a film loaded in the camera. When the film is loaded, information on the film described in the cartridge can be read. In this state, the film can be taken in and out. When it is closed, it is latched by pressing it against the main body, and it is fixed in the closed state.

  Reference numeral 5 denotes an external display liquid crystal, which displays the shooting setting status of the camera, the number of images that can be shot, and the like. Here, all lighting states are shown.

  Reference numeral 6 denotes a FUNC mark, which indicates a function set by the FUNC. Reference numeral 7 denotes an Av +/− button. In the manual mode, the aperture value of the camera can be changed by operating an electronic dial 15 described later while pressing the Av +/− button. When a mode other than the manual mode is selected, the exposure value set by operating the electronic dial 15 while pressing the Av +/− button can be corrected. Furthermore, it also has a SET function, and serves as a confirmation button when the clock is set.

  A FUNC button 8 is used to set various camera functions. Once the FUNC button 8 is pressed, the arrow on the external display liquid crystal 5 indicates the “DATE” portion of the FUNC mark 6 and settings relating to the DATE function can be performed. When the FUNC button is repeatedly pressed, the arrows pointed to the external display liquid crystal 5 move in the order of DATE → ISO → red eye → electronic sound → multiple exposure → AEB, and each function is set by operating the electronic dial 15 in each state. Can be done.

  Reference numeral 9 denotes an illumination button. When the button is pressed once, the backlight of the external display liquid crystal 5 is turned on and automatically turned off by a timer, but it can be forcibly turned off by pressing it again during lighting. Reference numeral 10 denotes a film rewind button, which is a button for starting rewinding when a loaded film is taken out. Reference numeral 11 denotes a partial photometry / AE lock button. When this button is pressed, the AE value partially measured at that time is fixed for a predetermined time.

  Reference numeral 13 denotes a drive button, and each time the button is pressed, the feeding mode is switched in the order of “single-image shooting” → “continuous shooting” → “self timer / wireless remote control”. Reference numeral 14 denotes a mode dial, which is rotated counterclockwise to the image zone where the camera determines the optimum exposure by selecting the type of subject when rotated clockwise from the “OFF” position where the camera power is turned off. When it is rotated, it becomes a creative zone where the user can determine the exposure as desired. The operation mode of the camera at the time of shooting is determined by rotating the icon drawn on the dial 14 and matching it to the mode dial indicator 21.

  Reference numeral 15 denotes an electronic dial, which, as described above, uses this to change parameters when making various settings. Reference numeral 16 denotes a release button having a two-stage stroke. AF / AE is determined by clicking the first stage (hereinafter referred to as SW1), and the mirror is raised and the shutter is operated by clicking the second stage (hereinafter referred to as SW2). A series of photographing operations such as (exposure), mirror down, and film feeding are performed.

  Reference numeral 17 denotes a viewfinder, and a photographed image can be confirmed by looking through here. A diopter adjustment knob 18 can switch the diopter according to the visual acuity of each user. Reference numeral 19 denotes a built-in flash, which is turned up by a camera or a user according to the situation, and emits the flash. Reference numeral 20 denotes an accessory shoe, which is an interface for attaching an accessory such as an external strobe. Reference numeral 21 denotes a mode dial index indicating the selected icon of the mode dial 14.

  Reference numeral 22 denotes a strobe light emitting unit. When the strobe pops up, the strobe light is emitted toward the subject to compensate for the insufficient light quantity. Reference numeral 23 denotes a red-eye alleviation lamp window, which is lit for a predetermined time immediately before the photographing operation when the strobe is emitted in the red-eye alleviation mode, urges the reduction of the pupil of the person who is the subject, and alleviates the occurrence of the red-eye phenomenon.

Reference numeral 24 denotes a wireless remote control light receiving window that receives a signal from the wireless remote control in the wireless remote control mode. In addition, the wireless remote control light receiving window 24 also serves as a projection window for the self-timer operation lamp, and blinks when the self-timer is activated to notify the person who is the subject of the operation. Reference numeral 25 denotes a mount interface. A lens (not shown) is abutted here and attached by a bayonet structure.
Reference numeral 26 denotes a mount lock release button, and 27 denotes a mount lock pin. When removing a lens (not shown), when the mount lock release button 26 is pressed, the mount lock pin 27 and the lens (not shown) are engaged with each other. The lens (not shown) can be rotated and can be detached from the bayonet.

  Reference numeral 28 denotes a strobe up button. When the shooting mode is in the creative zone, when this button is pressed, the built-in strobe 22 automatically pops up and emits light during shooting. Reference numeral 29 denotes a depth-of-field confirmation button. When this button is pressed, the lens aperture in the shooting standby state is narrowed down to the aperture set at that time, and the in-focus state at the time of shooting can be confirmed. .

  Reference numeral 30 denotes a wired remote control jack. By inserting a plug of a wired remote control (not shown) here, the SW1 / SW2 can be operated by the wired remote control. Reference numeral 31 denotes a tripod hole, and a camera and a tripod are integrally fixed by screwing a tripod screw attached to the tripod. Reference numeral 32 denotes a battery cover, and reference numeral 33 denotes a battery cover release lever. When the battery cover release lever 32 is operated, the battery cover 32 is opened, and the battery can be inserted and removed.

  Next, the finder 17 will be described in detail. FIG. 3 shows the inside of the finder 17 of the camera 1.

  Reference numeral 41 denotes a finder field frame, which indicates a range in which the camera 1 can shoot. Reference numerals 42a-1 to 42a-7 denote distance measurement frames, which indicate areas where the AF operation can be performed. Reference numerals 42b-1 to 42b-7 are superimpose (hereinafter referred to as SI) display points. The distance measurement points selected by the camera based on a predetermined algorithm from the distance measurement frames 42a-1 to 42a-7, or by the user This is an index for indicating the range-finding frame selected from any selection. Normally, it appears as a black dot, but when the selected distance measuring point is displayed, it is illuminated by the LED and glows red.

  Reference numerals 43 to 48 denote in-finder display LCDs (display elements) provided with a plurality of display patterns, which are shown in a fully lit state for convenience. Reference numeral 43 denotes an AE lock / FE lock mark which lights up when the AE lock or the FE lock is set. A strobe mark 44 displays the strobe status. Reference numeral 45 denotes a high-speed sync mark, which is displayed when flash photography is performed at a shutter speed faster than a predetermined shutter speed.

  Reference numeral 46-1 denotes a shutter speed display mark, 46-2 denotes an aperture display mark, 47-1 denotes an exposure level display index, and 47-2 denotes an exposure level display scale. During operation, an indication that the red-eye lamp is in operation is displayed by the exposure level display indicator 47-1. Reference numeral 48 denotes an in-focus mark, which lights when in-focus and blinks when in-focus cannot be achieved.

  Next, the configuration of the finder LCD unit will be described with reference to FIGS. In this embodiment, the configuration of the finder LCD unit will be described in the order of assembly.

  Reference numeral 51 denotes a finder LCD holder. First, the finder FPC 53 on which the finder LED 52 that is a light emitting element is mounted is dropped, and then the reflection sheet 54 and the light guide 55 are dropped. An anisotropic conductive rubber 56 is inserted into a gap formed by the finder LCD holder 51 and the light guide 55. A finder LCD 57 is placed on these and pressed by a pressing plate 58. At this time, the anisotropic conductive rubber 56 is compressed to generate conductivity, and the finder FPC 53 and the finder LCD 57 are electrically connected.

  Further, the light guide 55 is provided with an incident portion 55a formed so as to cover the finder LED 52 so that light from the finder LED 52 is not leaked. Further, the first area of the light guide is provided with a reflecting matte surface 55b for reflecting the light incident from the incident portion 55a, and the dots 55d are formed only in the area where the light needs to be irradiated. The mat processing by repetition is performed. Since the light incident from the incident portion 55a is diffused, the light density decreases as the distance from the incident portion 55a increases, and the brightness of the reflected light also decreases. Therefore, the density of the dot portions 55d is increased as the distance from the incident portion 55a is gradually increased, so that the apparent brightness in the viewfinder becomes uniform.

  The light guide 55 is subjected to mat processing by the dot portions 55e having a higher formation density than the dot portions 55d formed in the first region in the area of the mat surface 55b located on the back side of the focus mark 48. The second region corresponds to a specific display pattern such as the in-focus mark 48, and the second region has a higher formation density than the dot portion 55d of the reflective portion of the first region formed near or around the second region. An area is provided.

  In the finder LCD unit configured as described above, when a finder FPC 53 is energized to drive the finder LCD 57 by a camera control circuit (not shown), a predetermined mark is lit or blinks on the finder LCD 57. At the same time, when the finder FPC 53 is energized to drive the finder LED 52 by the camera control circuit, the finder LED 52 is turned on, and the light illuminates the end face 55 c of the incident portion 55 a of the light guide 55. The light incident from the end surface 55c is reflected by the mat surface 55b formed on the back surface and emitted to the viewfinder LCD 57 side. In addition, the light that has passed through the mat surface 55 b is reflected by the reflection sheet 54 and returned to the light guide 55 again. In this way, it functions as a backlight for the finder LCD 57.

  According to the present embodiment, the mat surface 55b, which is a reflection part that reflects light to the light guide 55 toward the viewfinder LCD 57 (display element side), has a first region corresponding to a display pattern other than the specific display pattern. And a second area corresponding to the specific display pattern, and the formation density of the reflection part (dot part 55e) in the second area is the dot density (formation of the dot part 55d applied to the first area). Density).

  Therefore, a specific display pattern corresponding to the second region can be displayed brighter than other display patterns provided corresponding to the first region, and the formation density of the reflection portions in the second region is high. For this reason, it is possible to reduce unnaturalness due to the reflection part being visible through the specific display pattern.

  Therefore, a display using a wide area to be magnified and observed, for example, even if it is the focus mark 48, the dot particles are not concerned, and the release operation is performed at the moment when the user is in focus. Therefore, it is possible to prompt attention (recognition) by brightly displaying other displays.

  As described above, the present embodiment is adapted to the camera finder display, but the same configuration can be adapted to the external display of the camera, and moreover to other electro-optical devices using a backlit LCD display. It can also be applied to.

  Furthermore, although LED is used as an illuminating device, this can also be configured using a light bulb or a fluorescent tube, and does not limit the illumination mechanism.

  The present embodiment can also be applied to a digital camera. For example, instead of shooting with a film, an image pickup device such as a CCD or C-MOS sensor is provided in the camera 1, and an optical image formed by the shooting optical system is photoelectrically converted into an electrical signal. The read electrical signal is converted into a video signal by an image processing circuit provided in the camera 1 and displayed on a display unit or the like, or the number of storable images is determined from the capacity of a memory in which the video signal is stored, The present invention can be applied by adopting a configuration such as displaying the number of shootable images on the display unit.

It is a back perspective view of the camera in Example 1 concerning the present invention. It is a front perspective view of the camera in Example 1 concerning the present invention. It is a figure which shows the display in a finder in Example 1 which concerns on this invention. It is the expansion | deployment perspective view (front view) which showed the structure of the finder LCD unit in Example 1 which concerns on this invention. It is the expansion | deployment perspective view (back view) which showed the structure of the finder LCD unit in Example 1 which concerns on this invention. It is the back perspective view which expanded the light guide in Example 1 concerning the present invention. It is the expansion | deployment perspective view (back view) which showed the structure of the finder LCD unit in a prior art example. It is the back perspective view which expanded the light guide in a conventional example.

Explanation of symbols

1 Camera 52 Viewfinder LED (light emitting element)
55 Light Guide 55a Incident Part 55b Reflector 57 Viewfinder LCD (Display Element)

Claims (4)

A display element having a display pattern that transmits light;
A light emitting element;
A light guide disposed on the back side of the display element and formed with a plurality of reflecting portions for reflecting light from the light emitting element to the display element side;
The light guide includes a first region corresponding to a display pattern other than a specific display pattern among the light emitting elements, and a second region corresponding to the specific display pattern. In the second region, The display device, wherein a formation density of the reflection portion is higher than a formation density of the reflection portion in a portion of the first region adjacent to the second region.   The light guide has an incident part for light from the light emitting element, and in the first region, the formation density of the reflecting part increases as the distance from the incident part increases. The display device according to 1.   An optical apparatus comprising the display device according to claim 1. The optical device is a camera;
The camera according to claim 3, wherein the display device performs display in a finder of the camera.

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