Carbon fiber is a material with a "negative" coefficient of linear expansion!
●Optical Equipment Housing Utilizing the low thermal expansion properties, which is one of the characteristics of CFRP, we will manufacture housings and structural products with minimal dimensional changes at varying temperatures. 【Overview】 The relationship between the lenses and the tube of a telescope is similar to the structure of the human eye. The lens of the eye, known as the crystalline lens, can change its thickness through the ciliary body, allowing it to adjust the retinal image. In a telescope, the tube can be considered analogous to the retina. However, in telescopes, any displacement in the diameter of the tube can lead to critical defects. Carbon fibers have a negative linear expansion coefficient when considered individually, so it is expected that by orienting them appropriately, we can create structures with “±0” expansion, meaning that the expansion and contraction due to temperature changes will be minimal. ★For more details, please request materials or download the documents★
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basic information
For more details, please request materials or download the documents.
Price information
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Delivery Time
※Approximately 30 days of actual work.
Applications/Examples of results
◆Thermal Expansion Characteristics ◇Telescope Tube ◇Subaru Telescope Auxiliary Telescope
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Company information
Sankyo Seisakusho utilizes a wide range of materials, from general-purpose plastics to advanced composite materials represented by carbon fiber reinforced plastics (CFRP), various metals, and inorganic materials, along with manufacturing technologies cultivated over 45 years. We respond accurately to the diverse needs of our customers, from conventional parts used in industrial equipment to advanced high-functionality structures for aerospace, radio, and aviation equipment. The workflow for FRP structures (parts) is as follows: 'Concept drawing from the customer → Analysis → Design → Manufacturing → Inspection/Testing → Delivery.' For anything related to FRP, please feel free to contact our web window at t.morimoto@sankyo-ss.co.jp. We strive to respond within 24 hours. (Web contact: Suzuki)