| 摘要 |
The present invention relates to a sapphire glass lens flash light with a length control function and, more particularly, to a flexible flash light with a length control function which includes a body part which is made of a flexible material which is solid. The flexible material is proper for the material of the flash light because the flexible material transmits a received impact. Sapphire glass is used in the lens and is not broken against a strong impact. A battery is mounted on the front side of the body part of the flash light. The flash light is not bent or broken by using the flexible material even though the body part is pulled to increase a length thereof. The flexible material is not increased by itself because the flexible material has friction. |
