Flashlamps exciting method

A flash, intensity excitation technology, used in optics, instruments, photography, etc., can solve the problems of poor camera and flash performance, power consumption, and prolonged shooting time.

Inactive Publication Date: 2007-12-05
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since pre-flashes need to be performed first, it consumes more power and prolongs the shooting time, resulting in poor performance of the camera and flash
[0004] In addition, most of the existing cameras fail to properly dim the flash when shooting close-ups, resulting in unsatisfactory over-exposure of the shooting results.

Method used

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  • Flashlamps exciting method
  • Flashlamps exciting method
  • Flashlamps exciting method

Examples

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Embodiment Construction

[0017] The embodiments described below are used in an image capture device with a flash, such as a digital camera. Fig. 1 is the flow chart of the first embodiment of flash lamp exciting method of the present invention, and this flow process comprises the following steps:

[0018] Step 12: Execute a focusing program of the image capture device to generate a focusing parameter;

[0019] Step 13: Estimate the shooting distance according to the focus parameter;

[0020] Step 14: Determine the excitation intensity of the flash according to the shooting distance; and

[0021] Step 15: When the image capture device captures the image, activate the flashlight according to the excitation intensity.

[0022] In step 12, the focus procedure is used to determine the focal length of the image capture device to obtain the best image resolution. The focusing parameter is generated when the focusing program is executed, and can be used for estimating the shooting distance in step 13 . In...

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Abstract

The invention discloses an exciting method of flash lamp, which is characterized by the following: utilizing video picking-up device to generate focusing parameter during focusing time; estimating the shooting distance; deciding the exciting strength of flash lamp dynamically; obtaining modified light filling effect; saving power and shooting time; improving picking-up and flash lamp effect obviously.

Description

technical field [0001] The present invention relates to a flashlight excitation method, in particular to a flashlight excitation method used in an image capture device. Background technique [0002] In general image capture devices, such as digital cameras, a flash is a common component used to supplement the required light source when capturing images. However, in some more traditional cameras, when a flash is required, the flash is activated with a fixed excitation intensity, which cannot be adjusted according to the shooting conditions at that time. Therefore, in addition to being easy to consume power, it is also impossible to dynamically adjust the excitation intensity to produce a more appropriate supplementary light effect. [0003] In some more advanced cameras, it is designed to have the function of preflash (preflash). That is, a pre-flash is performed before the image is captured, so as to feed back the ambient brightness at that time to the camera, and to deter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B15/03
Inventor 叶宗骐范仕远
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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