Purpose:
The SM-4 Binocular Pre-Autocollimator is used to inspect the optical axis misalignment and magnification difference of binocular telescope systems. It is widely applied in specialized optical testing instruments and serves as one of the essential tools in the assembly and adjustment processes of optical instrument manufacturing.
Product Structure

① Mirror tubes ② Eyepiece ③ Locking screws ④ Pedestal ⑤ Adjustment screws

Reticle schematic
Operating Instructions
Adjust the eyepiece diopter until the crosshair reticle appears sharp and clear. When measuring optical axis alignment, first align the crosshairs of the non-graduated reticle with the target reticle. Then, read the optical axis error directly from the graduated crosshair reticle.
External dimensions:(Unit: mm)

Precision Optical Alignment for Demanding Applications
The SM-4 Binocular Pre-Autocollimator by YuLing Technology is engineered to provide accurate and reliable optical alignment. Its integration of high-quality rectangular collimator and lens collimator components ensures minimal beam divergence and precise focus, essential for applications requiring meticulous alignment.
Enhanced Autocollimation Capabilities
Designed to support advanced autocollimation procedures, the SM-4 facilitates precise angular measurements and adjustments. Its compatibility with collimator bore sight systems enhances its utility in complex optical setups, ensuring consistent performance without extensive modifications.
Robust Construction for Long-Term Reliability
Constructed with durable materials, the SM-4 withstands demanding environments, ensuring consistent performance over time. Its robust design supports the stability of the lens collimator, maintaining alignment even under challenging conditions.
Versatile Applications Across Industries
Ideal for use in research laboratories, industrial inspection, and precision manufacturing, the SM-4 Binocular Pre-Autocollimator serves as a critical component in systems requiring exact optical alignment. Its advanced rectangular collimator technology supports a variety of applications, from laser systems to imaging equipment.
Product Advantages
- High-Precision Alignment – Utilizes advanced rectangular collimator technology to achieve accurate optical alignment, essential for high-performance systems.
- Versatile Integration – Compatible with various optical setups, the SM-4 accommodates different lens collimator configurations for seamless system integration.
- Durable Construction – Built with high-quality materials to ensure long-term reliability and maintain the stability of the rectangular collimator under various conditions.
- Enhanced System Performance – Improves overall system efficiency by providing precise alignment, reducing optical aberrations, and enhancing the functionality of the lens collimator.
- Wide Range of Applications – Suitable for diverse industries, the SM-4 supports applications requiring meticulous optical alignment, leveraging its advanced rectangular collimator features.
Enhance your optical systems with YuLing Technology’s SM-4 Binocular Pre-Autocollimator. Contact us today to place your order and experience the precision and reliability of our advanced rectangular collimator, lens collimator, autocollimation, and collimator bore sight solutions.

