Discharge illuminating device
A light-emitting device and discharge electrode technology, applied in electric light source, lighting device, light source, etc., can solve the problems that hinder the miniaturization and compactness of the camera, miss the camera shutter timing, and long charging time, etc.
Inactive Publication Date: 2004-01-21
OLYMPUS OPTICAL CO LTD
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Problems solved by technology
[0008] In the camera 51 equipped with the flash device using the above-mentioned conventional capacitor for light emission, it is necessary to equip Figure 8 , Figure 9 The light-emitting capacitor 63 shown has a relatively large external dimension, which hinders the miniaturization and compactness of the camera.
In addition, in the above-mentioned conventional flash device, it is necessary to charge the above-mentioned light-emitting capacitor 63 when the flash light emits light. Since the charging time is long, it is worried that the shutter timing of the camera will be missed.
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[0025] Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0026] figure 1 It is a see-through perspective view showing the internal arrangement of a camera incorporating a flash device which is a discharge device according to an embodiment of the present invention. figure 2 is a transverse cross-sectional view of the central part of the above-mentioned camera, showing the arrangement of main components inside the camera body. image 3 A sectional view showing a strobe light-emitting unit of the above-mentioned strobe device. Figure 4 It is a circuit diagram of the flash light emitting circuit of the above flash device.
[0027] Such as figure 1 , 2 As shown, the camera 1 of this embodiment is a compact camera, and a lens barrel unit 3 having an optical axis O, a film cassette loading chamber 6, and a spool chamber 7 on both sides thereof are arranged in its exterior (camera body casing) 2. . In addition, a viewfinder...
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In this light-emitting discharge device, switching elements 12, 13 are turned on / off alternately by a control circuit part 10, and when current is made to flow alternately to the two primary coils 14a, 14b side of an oscillating transformer 14, a trigger voltage is impressed from a second primary coil 14d on the outer wall electrode of a Xe tube arc tube 15. The Xe tube is excited by the impression of the trigger voltage, and light emitting current is flowed to the arc tube 15 by the discharge electrodes 15a, 15b of the Xe tube through the second secondary coil, and light-emission is started. Since a charge storage capacitor for light emission is not required for this light-emitting discharge device, the arrangement space for the device is small, and charge time to the above capacitor is not needed.
Description
technical field [0001] The invention relates to a light emitting circuit of a discharge light emitting device. Background technique [0002] A flash light emitting device of a conventional camera, which is one of discharge light emitting devices, requires a light emitting capacitor for storing charge (energy) for light emission. [0003] Figure 7 It is a perspective view showing the appearance of a compact camera incorporating a flash unit using the above-mentioned conventional light-emitting capacitor. Figure 8 is the above Figure 7 The cross-sectional view of part A-A in the figure shows the arrangement of the main parts inside the camera body. Figure 9 It is a see-through perspective view showing the arrangement of main components of the above-mentioned camera. Figure 10 is a cross-sectional view showing a strobe light-emitting unit suitable for the above-mentioned strobe device. [0004] Such as Figure 7 As shown, a lens barrel unit 53 , a viewfinder window 54 ,...
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IPC IPC(8): G03B15/02G03B15/05H05B41/00H05B41/32
Inventor 土田启一寺田洋志
Owner OLYMPUS OPTICAL CO LTD