| Adamant Co., Ltd. | |
| Native Name: | アダマンド株式会社 |
| Native Name Lang: | ja |
| Type: | Kabushiki kaisha |
| Foundation: | April 26, 1957 |
| Location City: | Adachi, Tokyo |
| Location Country: | Japan |
| Key People: | Chairman and CEO: Shoji Namiki President: Yoichi Shimoda |
| Products: | Photonics, fine industrial jewels, advanced materials |
is a component manufacturing company based in Tokyo, Japan. Its name is from the word adamant, which was derived from the Greek word adamas meaning "diamond". At of its founding, Adamant's main products were watch jewels that were made of a hard material.
In 1957, Adamant separated from Namiki Precision Jewel Co., Ltd.[1] It started sales of jewel bearings for watches and clocks and began to manufacture cap jewel, hole jewel, impulse jewel and pallet stone. In 1980, it started manufacturing ferrules for the optical communication industry utilizing injection molding engineering and polishing techniques.
Adamant merged with its parent company, Namiki Precision Jewel Co., Ltd., to establish Adamant Namiki Precision Jewel Co., Ltd. on January 1, 2018.
Started sales of jewel bearings for watches and clocks.
for telecommunication and applied electronic devices.
and ruby surgical knives
was established in United States.[2]
Adamant group gained certification according to ISO 14001.
Zirconia ferrule, sleeve, receptacle and connector incorporating Injection molding techniques.Lensed fiber, lens is formed on top of optical fiber which is equivalent with human hair.
Started full foundry service covering development →test production →and OEM Manufacturing of MEMS in tie-ups with Micralyne Inc. in Canada.[4] [5]
Pursuant to joint development with Micralyne Inc. for optical sensor device incorporating MEMS.VOA（Variable Optical Attenuator）and optical switch with hermetically sealed in metal package
Capillaries for bonding tool, wedge, also, ruby knife, pellet, dental block for medical device, physics and chemistry.
Variety of color Ceramics available such as White, Black, Blue and Brown.Featuring glossy by polishing finish and a high-class touch. LTCC（Low Temperature Co-fired Ceramics）[6] are co-fired at low temperature (900°C) in process which makes silver material possible in order to use as a conductor.Suited for RF products due to low loss. Also, multi-layered and flat substrate can be made easily. Highly accurate, high-density mounting are realized.[7]