In the lens processing, in order to manufacture a lens with the required performance, various conditions need to be adjusted by selecting the machine used for manufacturing and adjusting the polishing time according to the magnitude of curvature and the characteristics of the material.
For example, high-pixilation and high-definition are yearly advanced in CMOS image sensor used in cameras and a lens surface-roughness, unevenness or waviness negatively effects the lens imaging performance.
To enable a highly accurate lens, Tamron reflect a simulation result to a processing accuracy from the optical designing stage.
Tamron’s lens processing technology is covering a wide range, multiple lens bonding with curved surfaces, processing with plane lens and prism lens, and prism lens bonding with each other. From now on, as a new usage, optical lens is expected to be used with laser and to be required a complicated irregular shape or prism shape integrating various technologies.
To produce multifarious lenses required in the future, Tamron is newly developing and improving the processing technology and handing down its established expertise by cooperating the lens processing know-how and the optical development technology.
Various cameras, such as wearable cameras and surveillance cameras, need a higher accurate aberration correction due to image sensor’s high pixilation.
Curved shaped aspherical lenses made by grinding and molding are used for correcting lens aberration.
Changing the point on the ark on curved surface, which is called inflection point, does not exist in general glass molded aspherical lenses and only one lens has a limited ability to correct aberration.
Tamron realized the manufacturing of special formed glass optical molded lens having inflection point which effectively correct a distortion aberration of wide-angle lens and a field curvature aberration of high-resolution lens. In addition to a highly precise forming, one of the features is that general glass materials are acceptable.
Tamron realizes a high quality and stable manufacturing by collaborating highly technical lens design and molding technology and makes it applicable to a wide variety of application.
※Click on the image to enlarge
※Click on the image to enlarge
Glass molded lenses are made by heating the glass material at an high temperature and pressing it with an elaborate mold made in nanometer units. Although the production efficiency is high, it is molded in a thin-walled shape. It can sometimes crack and requires an advanced manufacturing process.
Tamron has realized an ultra-thin, small-diameter aspherical glass molded lens with a thickness of 0.1 mm, which is equivalent to copy paper. It can be expected to be used in optical systems such as wearable devices, robot eyes, and minimally invasive surgical cameras.
Tamron is evolving its lens processing technology in order to create lenses that can meet the ever-increasing demands for smaller equipment and higher resolution.
※The photo is for illustrative purposes only.
In addition to the technologies introduced here,
Tamron leverages various technologies for product development and to contribute to society.
In the future, Tamron plans to release the following technical information.
Technologies that maintain high surface precision for large lenses with diameter of φ140 mm
We look forward to putting Tamron technologies to work within your business.