Exposure equipment for display tube fabrication
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsHiroyuki Nagano, Takashi Inoue, Kazuo Ueno, Shohroh Mochida, Shuji Ueda, Osamu Adachi
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AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsHiroyuki Nagano, Takashi Inoue, Kazuo Ueno, Shohroh Mochida, Shuji Ueda, Osamu Adachi
Estimating the term…
Light radiated from a light source is gathered by an oval mirror. The gathered light is incident on one end of a rod-shaped optical integrator, integrated and made uniform within the optical integrator, and is radiated from the other end of the optical integrator. The light from the optical integrator is diffused and projected on an exposure area of a display tube by a lens system. The lens system presents an astigmatism, thereby forming a first virtual focus and a second virtual focus on its virtual image area. The diffused light is apparently diffused vertically at the first virtual focus and apparently diffused horizontally at the second virtual focus. The first vertical focus and the second vertical focus correspond respectively in position to the positions of the vertical deflection means and horizontal deflection means of the display tube. Therefore, the directions of the exposure light beams which shed light on green, blue, and red dots are in agreement with the directions of the deflected electron beams. As a result, the deflected electron beams can sweep over the green, blue, and red dots accurately in synchronization with image signals.
Exposure equipment for use in fabrication of a display tube having an exposure area, a vertical deflection point of an electron beam, and a horizontal deflection point of the electron beam, said exposure equipment comprising:
A method for exposure for use during fabrication of a display tube having a display area, a vertical deflection point of an electron beam, and a horizontal deflection point of the electron beam, said method comprising:
Exposure equipment for use in fabrication of a display tube having an exposure area, said exposure equipment comprising:
Dependencies are inferred from the claim text.