Production requirements for aperture blades


  1. Low mold‑making fees: etched photoresist masks can be produced within two hours, and molds can be freely reconfigured to suit any desired shape, thereby reducing design and development costs.

  II. The new product’s etching design and development are highly flexible and cost-effective, enabling partial etching of metal surfaces to incorporate the company logo, product serial numbers, and production batch codes, thereby supporting brand‑driven, precision manufacturing.

  3. The etching process ensures extremely high precision in lens diaphragms, with a maximum tolerance of ±0.01 mm. Moreover, the machining quality is consistently stable, batch-to-batch variations are clearly defined, and the quality-control system is stringent. This capability meets the precise assembly requirements of various components, thereby enhancing the overall product quality and accuracy.

  4. Even lens hoods with highly complex geometries can be manufactured in large volumes while maintaining consistent quality, with no impact on the per-unit etching cost. We can also readily accommodate miniaturization and product diversification, offering customized solutions to clients both domestically and internationally—without limiting ourselves to mass‑production only. Our dedicated sample‑development engineering team ensures rapid turnaround for small‑batch orders, all while upholding stringent quality standards.

  5. Various precision products manufactured using chemical etching are free of burrs and press marks, maintain their shape, and do not alter the material properties.

  6. All etching materials, regardless of thickness, can be processed in the same manner, meeting diverse precision requirements. Customers may select the appropriate material thickness based on their specific application needs.

  7. Virtually all metals can be etched, with no limitations on pattern design. Even for exceptionally fine patterns, the etching process offers an excellent solution. Different metal materials require tailored chemical formulations. For example, rare metals such as molybdenum, beryllium copper, copper alloys, spring steel, and 65Mn steel can also be processed by etching.

  8. Chemical etching can produce parts with precision unattainable through conventional stamping or sheet-metal processes. Stamping and laser cutting struggle to handle fine features and ultra-thin materials, whereas etching is better suited to these challenges, particularly for extremely thin metals.

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Invitation to the 2026 Japan Optoelectronics Exhibition from Yamagata Optics

〇 A mature, stable production system and a precise stray-light elimination solution 〇 Addressing customer pain points—delivering products that deliver real value


The Yokohama Optoelectronics Exhibition in Japan concluded successfully, yielding abundant results.

Yamagata Optics manufactures shutter blades, apertures, bases, lens barrels, caps, spacers, and camera housings, which can perfectly address image quality issues caused by various types of stray light.


Ultra-Low-Reflectance Coatings for Metal Components Over 99.9% Light Absorption

Inside a lens assembly, reflections from metal spacer rings, lens holder, barrel,spacer , baffle rings and the inner walls of the lens barrel can generate stray light. The resulting artifacts include light streaks, halos, ripple-like patterns and ghost images, all of which degrade image quality, as illustrated.


Serrated-Aperture Diaphragms for Stray-Light Suppression

Yamagata Optical's patented serrated aperture-edge design offers clear advantages over conventional wavy-edge designs. This innovative geometry provides highly effective stray-light suppression. It reflects our long-standing commitment to advancing precision optical components through research and engineering innovation.


Ion Coating Dramatically Reduces Baffle-Ring Reflectance

Yamagata Optical's ion-coating process reduces baffle-ring reflectance by a factor of 8.6. In addition to multiple solutions for suppressing stray light at the aperture edge, we can apply an ultra-low-reflectance ion coating to both sides of the film used to manufacture baffle rings. After treatment, reflectance can fall below 0.3%, substantially improving camera-module optical performance.


Yamagata Optics lens hood ion plating technology

After ion-plating treatment, Yamagata Optics has achieved an 8.6-fold reduction in the reflectance of its aperture. Currently, in addition to multiple anti-glare and stray-light suppression solutions for the inner bore of the aperture, Yamagata Optics can also apply ultra-low-reflection ion-plating to both sides of the raw-material light-shielding film. Following this anti-reflection treatment, the reflectance can be reduced to below 0.3%, significantly enhancing the optical performance of the camera.


The Ultra-Black Revolution in Optics From 5% to 0.1% Reflectance: How Yamagata Optical Is Advancing Photonics

In optical imaging, light can be both essential and disruptive. An unwanted ray may reflect off a lens-barrel wall, scatter from a spacer ring or diffract at a baffle edge. The result can be ghosting, halos, light streaks, ripple-like artifacts or veiling glare that washes out the image. Together, these forms of stray light undermine image clarity, contrast and signal-to-noise ratio.

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