Off-Axis Reflective Beam Generation
The FP-1000L off-axis Parabolic Collimator uses a primary off-axis mirror and a secondary plane mirror to produce an unobstructed beam through the Φ100 mm aperture. Because the reflective elements are decentered, the light path avoids obstruction and stray reflections, achieving ultra-parallel output with ≤ 5″ parallelism. This design ensures a clean, high-coherence beam that supports optical axis alignment, imaging system calibration, and infinite-target simulation across multi-wavelength applications.
Optical Specifications And Lens Collimator Characteristics
Key parameters include 1000 mm focal length (±1 %), field of view ≥ 1.6°, and wavefront aberration RMS ≥ 1/15λ @ 632.8 nm. The primary mirror surface attains RMS ≤ 1/40λ, and system wavefront quality is ≤ λ/20 (on-axis, 80% aperture). Reflectivity is ≥ 85%, using aluminum + silicon protective coating, with optional gold, silver, or dielectric finishes for specific spectra. As a lens collimator integrated system, it supports visible to infrared operations while preserving image fidelity and stability under environmental variation.
Modular Accessories And Testing Flexibility
The collimator includes standard accessories: two filters (600 nm orange, 532 nm green), one neutral attenuator (430–730 nm), 12 visible reticles (crosshair, resolution, star point types), USAF 1951 resolution reticle, and a 12 V/30 W halogen light source. For infrared and advanced imaging tasks, it supports customizable reticles for MRTD, MDTD, SRF, distortion, outline, square pattern, NETD, FPN, and SITF measurements using a blackbody source. The focal plane features a modular reticle frame, enabling rapid swapping between target plates for various calibration tasks in optical labs or production environments.
Product Advantages
Unobstructed Optical Path And Reduced Stray Light
The off-axis reflective design ensures the beam path remains free from central obstruction, maintaining uniform illumination and minimizing stray light. The resulting parallel beam exhibits consistent coherence conducive to precision optical alignment and metrology.
High Wavefront Accuracy And Reflective Efficiency
With the primary mirror surface achieving RMS ≤ 1/40λ and system wavefront RMS ≥ 1/15λ, the collimator maintains excellent optical fidelity. Reflectivity ≥ 85% ensures efficient throughput. The protective coating enhances environmental stability, preserving optical performance across visible and infrared ranges.
Robust Manufacture And Customization From A Professional Source
As a dedicated collimator manufacture, YuLing Technology applies rigorous polishing, alignment, and quality control to each unit. The modular construction and accessory compatibility support a wide range of optical tasks—from axis calibration to imaging resolution testing—while ensuring long-term stability and reliability in laboratory and industrial settings.
Optical path diagram：
1.The main reflector adopts an off-axis surface mirror, select the appropriate off-axis, so that the reflected optical path deviates from the optical axis, avoids the secondary reflector from interfering with the light-passing optical path, and ensure that the φ100mm light-permeable area is unobstructed.
2.The secondary mirror adopts a plane reflector, which undertakes the reflected light path of the main reflector and turns the light path, so that the reflected light path is located on the side of the light outlet, which is convenient for later debugging and use.
3.The focal plane position is the target surface installation position. Each target plate is installed in the dividing plate frame separately. Through later debugging, each target plate is placed in the focal surface position after separate assembly to realize the target plate replacement function.
Standard Components:
1.Collimator Main Unit: 1 set
2.Filters: 2 pieces (Orange, center wavelength 600nm; Green, center wavelength 532nm)
3.Attenuator: 1 piece (Neutral Attenuator 430–730nm)
4.Visible Reticles: 12 pieces(Crosshair Reticles*1,Resolution Reticles*5:1#/2#/3#/4#/5#,Star Point Reticles*5: 0.1/0.2/0.01/0.02/0.05,Porro Board*1)
5.USAF 1951 Resolution Reticle: 1 piece
6.Light Source Assembly: 1 set( 12V30W Halogen Light Source) Custom Components (Applicable to Infrared Reticles):
Custom Components (Applicable to Infrared Reticles):
Infrared targets are formed by machining various patterns into thin metal plates. When illuminated by a blackbody source, the thermal imager under test observes sharp target patterns against a uniform background. A variety of standard infrared targets are available for customization.
Examples of Targets:
1.Four-Bar Target: For Minimum Resolvable Temperature Difference (MRTD) testing.
2.Circular Target: For Minimum Detectable Temperature Difference (MDTD) testing.
3.Slit Target: For Slit Response Function (SRF) testing.
4.Cross-Circle Target: For axis alignment, aiming, and focusing.
5.Distortion Target: For testing camera distortion in image generation.
6.Outline Target: For evaluating target recognition range of the camera under test.
7.Square Target: For testing Noise Equivalent Temperature Difference (NETD), Fixed Pattern Noise (FPN), Signal Transfer Function (SITF), and Aperiodic Transfer Function (ATF).
External dimensions:（Unit: mm）
About Us
YuLing Technology, based in Chongqing, China, specializes in precision optical and photoelectric measurement instruments. Its R&D center in Xi’an focuses on the design and production of collimators, autocollimators, optical benches, and calibration systems. Serving aerospace, defense, metrology, and advanced imaging industries, YuLing combines optical design, mechanical engineering, and electronic integration to deliver accurate, stable, and customizable solutions. The company adheres to principles of quality, integrity, and service, supplying instruments verified to international standards and backed by technical support tailored to customer needs. Contact YuLing to request the FP-1000L specifications or discuss your calibration project now!
FAQ – Frequently Asked Questions
What beam parallelism does the FP-1000L achieve?
It delivers ≤ 5″ parallelism verified by interferometric calibration.
What is the clear aperture size?
The system supports a Φ100 mm unobstructed aperture.
Which wavelength range does it support?
It operates from visible to infrared bandwidths, with high optical fidelity.
Can mirror coatings be customized?
Yes—standard aluminum + Si is provided; optional gold, silver, or dielectric coatings are available.
How long is the typical delivery period?
Production and testing usually take 4–6 weeks depending on configuration.
