Backlight apparatus and photographing device with the same
A technology of backlight device and camera equipment, applied in mechanical equipment, lighting device, lighting and heating equipment, etc., can solve the problem of inability to install and form thin
Inactive Publication Date: 2008-06-25
CASIO COMPUTER CO LTD
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Problems solved by technology
[0006] The first problem to be solved by the present invention is the problem that the whole device cannot be formed very thin even if the light guide plate is formed thinner
Method used
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Embodiment Construction
[0018] Below, refer to Figure 1 ~ Figure 4 One embodiment of an electronic camera to which the present invention is applied will be described.
[0019] figure 1 It is a perspective view of the electronic camera of the present invention seen from the front, figure 2 It is a perspective view of the electronic camera seen from the rear, and FIG. 3 is an exploded perspective view showing the internal structure of the electronic camera.
[0020] The electronic camera, such as figure 1 as well as figure 2 As shown, a camera body 1 is provided. The camera body 1 is composed of a front case 2 and a rear case 3, and these front case 2 and rear case 3 are formed of thin plates made of highly rigid metal such as stainless steel.
[0021] In this case, on the front upper right corner of the front case 2, such as figure 1 As shown, an imaging unit 4 is provided, an optical viewfinder 5 is provided on the left side thereof, and a flash light emitting unit 6 is provided on the furth...
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In the backlight device, where light from a light source is introduced from one end face of a light guide plate into the inside of the light guide plate, this introduced light is guided in the light guide plate, and this guided light is emitted from the upper surface of the light guide plate to achieve surface emission; a flat surface lower by one step is formed via an inclined surface on the upper surface of the light guide plate except for one end side of the light guide plate where the light source is located; and this flat surface lower by one step is provided with a sheet member having diffusibility. Thus, even if the sheet member has the same thickness as that of conventional one, the whole device can be made thin, if the light guide plate is made thin, and the device as a whole can be further made thin. In addition, the bottom of the light guide plate is formed to be a flat surface, and is located at such a depth that the height of each upper surface of a film substrate arranged at one end of the light guide plate and the sheet member becomes nearly equal, the flat surface is formed on the upper surface of the light guide plate to be lower by one step, allowing the thickness of the device as a whole to be uniform.
Description
technical field [0001] The present invention relates to a planar light-emitting type backlight device and an imaging device having the same. Background technique [0002] In the past, the structure of the backlight device for illuminating the inside of the liquid crystal display device is that the light emitted from the light source enters the inside of the light guide plate from the end surface of one end of the light guide plate, and the light that enters the light is guided in the light guide plate and then flows out from the light guide plate. One side of the light board is exposed to perform surface lighting. [0003] Such a backlight device has a flat surface on the light emitting side of the light guide plate, and the other surface on the opposite side is formed so that the thickness of the light guide plate increases from one end on the light source side to the other end. The inclined surface gradually becomes thinner, and the diffusion sheet is provided on the flat...
Claims
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IPC IPC(8): G02F1/1335F21V8/00G02F1/13357F21Y101/02G02B5/00G03B17/02H04N5/66
Inventor 大塚浩一
Owner CASIO COMPUTER CO LTD