Extension Photoflash Light and Camera System Using the Same

Abstract

An extension photoflash light and a camera system using the same are provided in the present invention. The extension photoflash light is for assisting a mobile device with camera function. The extension photoflash light includes a HID, a mounting mechanism, a touch simulation device and a control circuit. The mounting mechanism is for mounting the extension photoflash light on the mobile device. The touch simulation device is disposed on the mounting mechanism. The control circuit is coupled to the HID and the touch simulation device. When the mounting device of the extension photoflash light contacts the surface of the flat panel display of the mobile device, the mobile device acquire the position information of the extension photoflash light according to the touch simulation device.

Description

[0001]This application claims priority to U.S. Provisional Patent Application Ser. No. 62 / 317,062 filed on Apr. 1, 2016 which is incorporated herein by reference in its entirety.BACKGROUND OF THE INVENTIONField of the Invention[0002]The invention relates to the technology of a photoflash light used in a mobile device, and more particularly to an extension photoflash light and a camera system using the same.Description of the Related Art[0003]Due to the progresses of the pixel and quality of the digital photographing, a mobile device (e.g., a mobile phone or a tablet computer) possessing the photographing function has become a trend. However, the performances of these built-in digital cameras in the low-light or backlight environment cannot match with the conventional digital camera. Although each of some mobile devices with built-in digital cameras is also equipped with a light-emitting diode (LED) assistant exposure light, the assistant exposure amount of the LED assistant exposure...

AI Technical Summary

Benefits of technology

The invention provides an extension photoflash light for mobile devices that can be mounted using a touch simulation device on the mounting mechanism of the light. The mobile device can obtain the mounting position of the light and also receive information about the battery capacity, the charging status, and the brand of the light. This allows for communication between the mobile device and the extension photoflash light.

Problems solved by technology

However, the performances of these built-in digital cameras in the low-light or backlight environment cannot match with the conventional digital camera.

Although each of some mobile devices with built-in digital cameras is also equipped with a light-emitting diode (LED) assistant exposure light, the assistant exposure amount of the LED assistant exposure light is seriously restricted due to the battery capacity of the mobile device and the heat dissipating problem of the LED.

When the distance to the to-be-illuminated object exceeds 1 meter, the LED cannot provide the sufficient light source to properly expose the photosensitive members.

These capacitors have the very large volume, and cannot be accepted by the mobile device under the slim and light preconditions of the mobile device.

However, due to the limitation of the rolling shutter, the flash time of the xenon photoflash light is only several microseconds (μs), which is relatively short, and the extension xenon photoflash light often cannot find the optimum flash timing.

The HID lamp cannot perform flash operation if HID lamp is not sufficiently charged.

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