FP-1200L Off-Axis Reflective Collimator with Ø100mm Effective Clear Aperture

Introduction:

The FP-1200L off-axis reflective collimator is an advanced optical instrument designed to provide high-quality, unobstructed parallel light beams. Its off-axis design, where the primary and secondary mirrors are not aligned on the same axis, effectively reduces stray light and reflections, thereby enhancing optical performance. It is especially suitable for high-precision optical measurements and advanced applications such as space exploration.

Key Functions:

1. Optical axis alignment for multi-axis systems in visible, infrared, and laser wavelengths.
2. Basic parameter testing of optical systems using various reticles and additional accessories.
3. Infrared imaging quality testing and optical axis alignment with a blackbody source.
4. Laser beam expansion by integrating with a laser source.
5. Provides ultra-low divergence angle parallel light.
6. Simulates an infinite target.

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 φ200mm 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):

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）