VY-0430 Inner Wall Inspection Lens for Deep Holes and Pipes

Introduction

VY Optics is pleased to introduce the VY-0430 Inner Wall Inspection Lens for deep holes, pipes, bores, tubes, and precision internal cavities.

Inner wall inspection is a common need in many industries. However, it is not always easy to do well.

Usually, the outside of a part is easy to see. By contrast, the inside wall of a hole, tube, or cavity is much harder to inspect. Scratches, cracks, burrs, pits, contamination, corrosion, and machining marks may appear in places where a standard lens cannot reach.

Because of this, VY Optics developed the VY-0430 as a compact wide-angle lens for internal wall inspection.

This lens has a front-end outer diameter of approximately Φ8.4 mm, a working F-number of F/2.8, and a maximum full field of view of approximately 78°. As a result, it can work with industrial cameras and suitable lighting for many narrow-space inspection systems.

From Earlier Inner-Hole Lens Design to the VY-0430 Upgrade

VY Optics has worked on inner-hole inspection lens designs before. Through those earlier projects, we learned more about what customers really need in this type of application.

In real projects, customers usually care about more than a wide-angle image.

They also need to know:

• whether the lens can enter a narrow hole or cavity
• whether the front-end diameter is small enough
• whether the lighting can fit into the system
• whether the lens can support axial or rotational scanning
• whether the image can show real defects clearly
• whether the mechanical structure can fit into the equipment

Therefore, the updated VY-0430 puts more focus on compact size, small-diameter insertion, practical equipment integration, and real internal wall defect inspection.

The goal is simple:

to help customers inspect internal walls more easily in deep holes, pipes, bores, tubes, and precision cavities.

Why Inner Wall Inspection Needs a Special Lens

Inner wall inspection is different from ordinary surface inspection.

In many cases, the inspection area is narrow, deep, curved, and difficult to light. Meanwhile, the internal surface may also be reflective, machined, contaminated, or partly blocked by the part structure.

As a result, a standard machine vision lens may not solve the problem well.

For inner wall inspection, the lens usually needs:

• a small front-end structure
• a wide field of view
• enough aperture for limited light
• compatibility with industrial cameras
• enough space for insertion
• support for rotational, axial, or helical scanning
• a structure that can work with annular or side lighting

This is why a dedicated inner wall inspection lens can be useful.

Application Overview

The VY-0430 Inner Wall Inspection Lens helps inspect internal surfaces of deep holes, pipes, bores, tubes, and precision cavities.

Customers can use it with industrial cameras and proper lighting. For example, the system may use annular lighting, side lighting, or a custom light structure.

Typical defects include:

• scratches
• cracks
• burrs
• pits
• foreign objects
• contamination
• corrosion
• machining marks
• surface damage
• internal wall defects

In practice, equipment manufacturers and automation integrators can use this lens as part of an internal inspection system when both compact size and wide-angle imaging matter.

Typical Applications

The VY-0430 can serve many industrial and precision inspection applications.

Hydraulic and Mechanical Components

Hydraulic valve bores, bushings, cylinder blocks, sleeves, and deep-bore parts often need inner wall inspection.

For example, burrs, scratches, pits, and machining marks may affect sealing, flow performance, or long-term reliability.

Automotive Components

Automotive parts such as fuel injectors, brake lines, valve bodies, cooling channels, and precision machined parts may also need internal inspection.

In these cases, a compact inner wall inspection lens can help check areas that are difficult to inspect with a normal external vision system.

Metal Tubes and Fluid Passages

The VY-0430 can also help inspect stainless steel tubes, copper tubes, narrow channels, and fluid passages.

Common inspection targets include corrosion, contamination, scratches, foreign objects, and internal surface defects.

Semiconductor and Precision Packages

In semiconductor equipment or precision packaging, customers may need to inspect internal cavities, vacuum lines, ceramic cavities, and precision packages.

For these applications, optical access, lighting, and mechanical fit are all important.

Battery, Cooling and New Energy Components

Battery housings, cooling channels, and motor water-cooling channels often contain internal structures that are hard to inspect from the outside.

Therefore, inner wall inspection can help find foreign objects, machining residue, burrs, contamination, and surface problems before final assembly.

Medical and Precision Plastic Components

Depending on the camera, lighting, and system structure, the lens may also support inspection of medical catheters, syringe barrels, and precision plastic interiors.

For these parts, internal cleanliness and surface quality are often important.

Product Features

Small-Diameter Front-End Design

The front-end outer diameter is approximately Φ8.4 mm. This makes the lens suitable for narrow internal spaces.

We recommend it for inspecting inner diameters of Φ10 mm or larger. However, the final setup should still consider the camera, lighting, and mechanical structure.

Compact Overall Structure

The total lens length is approximately 41 mm, while the maximum outer diameter is approximately Φ13 mm.

Because of this compact structure, customers can integrate the lens into small inspection modules or automated inspection equipment more easily.

Large F/2.8 Aperture

The VY-0430 uses a working F-number of F/2.8.

For inner wall inspection, light is often limited because the space is narrow and deep. Therefore, a larger aperture can help when the system uses proper illumination.

Wide-Angle Field of View

The maximum full field of view is approximately 78°.

With this field of view, the lens can cover a larger internal wall area in one view or one scan. As a result, the system may improve inspection efficiency.

Visible Light Compatibility

The lens works with visible wavelengths of 486 nm, 588 nm, and 656 nm.

Also, it can match white LED lighting and industrial cameras, depending on the final inspection setup.

Flexible Scanning Methods

The VY-0430 supports different inspection methods, including:

• fixed-position inspection
• rotational inspection
• axial scanning
• helical scanning
• custom inner wall inspection systems

Therefore, it can fit different inspection equipment designs.

Key Specifications

The final system performance depends on the camera sensor, lighting method, working distance, mechanical structure, and inspection target.

How the Lens Can Work in an Inspection System

In a typical inner wall inspection system, the VY-0430 works with an industrial camera, compact lighting, and a mechanical scanning structure.

For short cavities, fixed-position inspection may be enough. However, longer holes, tubes, or bores may require axial scanning.

For cylindrical internal walls, rotational or helical scanning can help cover more of the internal surface.

Lighting also plays an important role. Depending on the part structure, the system may use annular lighting, side lighting, or a custom light guide.

In this type of project, the lens is only one part of the system. Camera selection, lighting angle, scanning method, mechanical stability, and software also affect the final result.

Customization and Optical Support from VY Optics

VY Optics provides custom optical solutions for industrial inspection, machine vision, internal cavity inspection, and precision imaging applications.

For inner wall inspection projects, we can support:

• compact inspection lens design
• wide-angle optical design
• optical component manufacturing
• custom wavelength coating
• lens assembly and alignment
• mechanical structure support
• inspection module development
• application-based optical review

Some customers may only need the VY-0430 lens. However, other customers may need a custom optical module, lighting structure, or mechanical support.

In both cases, the best solution should start from the real inspection requirement.

Information Needed for Project Evaluation

If you are developing an inner wall inspection system, the following information will help us review the optical direction:

• inner diameter of the part
• inspection depth
• required field of view
• defect type and minimum defect size
• camera sensor size
• working distance or available space
• lighting method
• surface material and reflectivity
• scanning method
• inspection speed
• mechanical space limits
• expected quantity or project stage

Even if some parameters are not fixed yet, an early discussion can still help avoid the wrong lens choice later.

Final Thoughts

Inner wall inspection is a practical challenge in many industries.

Deep holes, narrow tubes, internal cavities, and precision passages are difficult to inspect with standard lenses.

For this type of application, the VY-0430 Inner Wall Inspection Lens provides a compact wide-angle option.

Compared with earlier inner-hole inspection lens designs, the updated VY-0430 focuses more on compact size, small-diameter insertion, practical integration, and internal wall defect inspection.

For customers developing inspection equipment for deep holes, pipes, bores, tubes, or precision cavities, this lens can provide a useful optical starting point.

Need an Inner Wall Inspection Lens?

If you are developing an inspection system for deep holes, tubes, pipes, internal cavities, hydraulic components, automotive parts, semiconductor cavities, battery channels, or precision plastic interiors, VY Optics can help evaluate the optical requirements.

Please send us your part inner diameter, inspection depth, camera sensor, lighting method, defect size, and mechanical space.

We will review the application and discuss whether the VY-0430 inner wall inspection lens or a customized optical solution is more suitable for your project.