Analysis & Measurement
Huygens Series Cryogenic Objectives
Full Coverage for Extreme Environments: 10 mK to 320 K, 0 to 18 Tesla Various Objectives to Meet User Needs in Extreme Environments (Polarization, Magnetic Imaging, Fluorescence Collection, Imaging, etc.)
Minimum OperatingTemperature
10 mK
Thermal Expansion Controll for Superior Optics over Full Operating Temperature Range
Maximum Magnetic Flux Density
18 Tesla
Fully Demagnetized Material Body, Supports Operation in Strong Magnetic Fields
Maximum Diameter
∅22 mm
Built for Tight Experimental Spaces
Key Advantages
Cryogenic Optical Solutions Designed for Extreme Environments
APO
N.A. 0.90
APO
N.A. 0.60
APO
N.A. 0.36
N.A. 0.90
MFLT60.VIS.APO
Ultra-Wide Field of View, Extra-Long Working Distance & Broadband Apochromatic Correction
Specifications
0.6
Numerical Aperture 1 , N.A.
∅ 122 μm
Field of View 2, FOV
470 – 670 nm
Apochromatic Range 3
430 – 1050 nm @ T > 80%
Anti-Reflective 4, A.R.
6.0 mm
Working Distance, W.D.
3.9 mm
Focal Length 5, f
Notes
1.Numerical Aperture (N.A.): defines the light-gathering ability and resolution of an objective. It is given by N.A. = n · sin(θ/2), where n is the refractive index of the medium between the objective and the sample, and θ is the maximum acceptance angle of the light cone. A larger N.A. provides higher imaging resolution, with the minimum resolvable distance d = 0.61 λ / N.A., where λ is the light wavelength.
2.Field of View (FOV): Diameter of the area on the focal plane with diffraction-limited imaging.
3.Apochromatic Range: After passing through an objective, light at different wavelengths focuses at slightly different axial positions (|df|). As long as this focus shift remains within the depth of focus (Δ = λ / (2 · NA²)), image quality is not degraded. The wavelength span over which |df| < Δ is referred to as the apochromatic(APO) range.
4.Anti-Reflective (A.R.): The percentage of transmitted light (T) at specific wavelengths after passing through the objective, relative to the incident light.
5.Focal Length (f): A key optical parameter, defined as the distance from the optical center to the focal point. It is widely used in calculating various optical specifications
–Optical Center: The point in the objective where light passes without deviation, serving as the “coordinate origin” of the objective.
–Focal Point: The point where parallel light rays converge after passing through the objective.
Apochromatic Correction Data
MFLT36.VIS.APO
Broadband Apochromatic, Ultra-Long Working Distance & Large Field of View
Specifications
0.36
Numerical Aperture 1 , N.A.
∅ 200 μm
Field of View 2, FOV
470 – 1600 nm
Apochromatic Range 3
490 – 1400 nm @ T > 80%
Anti-Reflective 4, A.R.
13.8 mm
Working Distance, W.D.
6.7 mm
Focal Length 5, f
Notes
1.Numerical Aperture (N.A.): defines the light-gathering ability and resolution of an objective. It is given by N.A. = n · sin(θ/2), where n is the refractive index of the medium between the objective and the sample, and θ is the maximum acceptance angle of the light cone. A larger N.A. provides higher imaging resolution, with the minimum resolvable distance d = 0.61 λ / N.A., where λ is the light wavelength.
2.Field of View (FOV): Diameter of the area on the focal plane with diffraction-limited imaging.
3.Apochromatic Range: After passing through an objective, light at different wavelengths focuses at slightly different axial positions (|df|). As long as this focus shift remains within the depth of focus (Δ = λ / (2 · NA²)), image quality is not degraded. The wavelength span over which |df| < Δ is referred to as the apochromatic(APO) range.
4.Anti-Reflective (A.R.): The percentage of transmitted light (T) at specific wavelengths after passing through the objective, relative to the incident light.
5.Focal Length (f): A key optical parameter, defined as the distance from the optical center to the focal point. It is widely used in calculating various optical specifications
–Optical Center: The point in the objective where light passes without deviation, serving as the “coordinate origin” of the objective.
–Focal Point: The point where parallel light rays converge after passing through the objective.
Apochromatic Correction Data
MFLT90.VIS
High NA, Wide FOV & Compact Form Factor
Specifications
0.9
Numerical Aperture 1 , N.A.
∅ 220 μm
Field of View 2, FOV
450 – 630 nm
Achromatic Range 3
400 – 750 nm @ T > 80%
Anti-Reflective 4, A.R.
0.2 mm
Working Distance, W.D.
1.8 mm
Focal Length 5, f
Notes
1.Numerical Aperture (N.A.): defines the light-gathering ability and resolution of an objective. It is given by N.A. = n · sin(θ/2), where n is the refractive index of the medium between the objective and the sample, and θ is the maximum acceptance angle of the light cone. A larger N.A. provides higher imaging resolution, with the minimum resolvable distance d = 0.61 λ / N.A., where λ is the light wavelength.
2.Field of View (FOV): Diameter of the area on the focal plane with diffraction-limited imaging.
3.Achromatic Range: The focal shift between F’ line (480 nm) and C’ line (644 nm) satisfies |fF’- fC’| < 2|Δ| with Δ representing the depth of focus at e line (546 nm)
4.Anti-Reflective (A.R.): The percentage of transmitted light (T) at specific wavelengths after passing through the objective, relative to the incident light.
5.Focal Length (f): A key optical parameter, defined as the distance from the optical center to the focal point. It is widely used in calculating various optical specifications
–Optical Center: The point in the objective where light passes without deviation, serving as the “coordinate origin” of the objective.
–Focal Point: The point where parallel light rays converge after passing through the objective.
MFLT90.VIS.APO
High NA, Wide FOV & Compact Form Factor
Specifications
0.9
Numerical Aperture 1 , N.A.
∅ 265 μm
Field of View 2, FOV
470 – 650 nm
Apochromatic Range 3
400 – 780 nm @ T > 80%
Anti-Reflective 4, A.R.
1.0 mm
Working Distance, W.D.
1.8 mm
Focal Length 5, f
Notes
1.Numerical Aperture (N.A.): defines the light-gathering ability and resolution of an objective. It is given by N.A. = n · sin(θ/2), where n is the refractive index of the medium between the objective and the sample, and θ is the maximum acceptance angle of the light cone. A larger N.A. provides higher imaging resolution, with the minimum resolvable distance d = 0.61 λ / N.A., where λ is the light wavelength.
2.Field of View (FOV): Diameter of the area on the focal plane with diffraction-limited imaging.
3.Apochromatic Range: After passing through an objective, light at different wavelengths focuses at slightly different axial positions (|df|). As long as this focus shift remains within the depth of focus (Δ = λ / (2 · NA²)), image quality is not degraded. The wavelength span over which |df| < Δ is referred to as the apochromatic(APO) range.
4.Anti-Reflective (A.R.): The percentage of transmitted light (T) at specific wavelengths after passing through the objective, relative to the incident light.
5.Focal Length (f): A key optical parameter, defined as the distance from the optical center to the focal point. It is widely used in calculating various optical specifications
–Optical Center: The point in the objective where light passes without deviation, serving as the “coordinate origin” of the objective.
–Focal Point: The point where parallel light rays converge after passing through the objective.
Applications
Fluorescence Collection Under
Cryogenic High Pressure
(Long Working Distance)
NV center fluorescence analysis at 2 K, high-pressure (10 GPa) diamond anvil cell environment
Product model
MFLT36.VISNIR.APO
Fully Demagnetized, UHV Compatible, Broad Wavelength Apochromatic Range
Ultra-Long Working Distance
13.8 mm
In high-pressure optical experiments, diamond anvil cell setups require longer working distances
Specification
Explore Your Options
MFLT90.VIS.APO
MFLT60.VIS.APO
MFLT36.VISNIR.APO
MFLT90.VIS
➨ Operating Environment
1 Operating Temperature
10 mK ~ 320 K
2 Maximum Operating Magnetic Field 1
18 Tesla
3 Operating Pressure
Vacuum ~ 1 standard atmosphere
➨ Optical Specifications
4 Numerical Aperture 2
0.9
0.6
0.36
0.9
5 Anti-Reflective 3
T > 80 %
400 – 780 nm
430 – 1050 nm
490 – 1400 nm
400 – 750 nm
6 Achromatic Range 4
APO 470 – 650 nm
APO 470 – 670 nm
APO 470 – 1600 nm
AC 450 – 630 nm
7 Imaging Distance
Focal Length ( f ) 5
Working Distance 6
Parfocal Distance
1.8 mm
1.0 mm
45 mm
3.9 mm
6.0 mm
72.1 mm
6.7 mm
13.8 mm
72.1 mm
1.8 mm
0.2 mm
45 mm
8 Field of View 7
∅ 265 μm
∅ 122 μm
∅ 200 μm
∅ 220 μm
9 Entrance Pupil Diameter 8
∅ 3.2 mm
∅ 4.7 mm
∅ 4.8 mm
∅ 3.2 mm
10 Magnification 9
×111
×51
×30
×111
➨ Basic Information
11 Dimensions
Diameter × Length
MFLT90.VIS.APO,
∅ 22.0 mm / 49.5 mm
MFLT60.VIS.APO,
∅ 22.0 mm / 71.0 mm
MFLT36.VISNIR.APO,
∅ 22.0 mm / 63.0 mm
MFLT90.VIS,
∅ 22.0 mm / 49.5 mm
12 Weight
48.0 g
76.5 g
69.0 g
104.0 g
13 Material
Titanium Alloy
Titanium Alloy
Titanium Alloy
Copper Alloy
14 Thread
RMS ( WJ 4 / 5 “* 1 / 36” )
15 Enviroment
Labratory Condition, RoomTemperature, RH < 40%
- Measured Maximum Magnetic Field: The maximum field tested. Since the objective is made of fully demagnetized materials, it can theoretically operate in even stronger magnetic fields.
- Numerical Aperture ( N.A. ): N.A. = n · sin( θ/2 ), where n is the refractive index of the medium between the objective and the sample, and θ is the aperture angle, defined as the maximum cone of light the system can accept. This parameter determines the resolution of microscopic imaging, with the minimum resolvable distance between two points given by d = 0.61 λ / N.A. ( λ is the wavelength of the light source ).
- Anti – Reflective Coating ( A.R. ): The percentage of transmitted light ( T ) at specific wavelengths after passing through the objective, relative to the incident light.
- APO: Apochromatic – Due to the chromatic abberation of an objective, the light at different wavelengths focus at slightly different axial positions. As long as the focal shift, df, remains within the depth of focus Δ = λ / ( 2 · NA² ), the image quality is always optimized. The wavelength span over which |df| < Δ is referred to as the apochromatic range.
– AC: Achromatic – The focal shift between F’ line ( 480 nm ) and C’ line ( 644 nm ) satisfies |fF’- fC’| < 2|Δ| with Δ representing the depth of focus at e line ( 546 nm ).
- Focal Length ( f ): A key optical parameter, defined as the distance from the optical center to the focal point. It is widely used in calculating various optical specifications.
– Optical Center ( Objective Center ): The point through which light passes without deviation, serving as the coordinate origin of the microscope optical system.
– Focal Point: The point where parallel light rays converge after passing through the objective.
- Working Distance ( W.D. ): The vertical distance from the mechanical front end of the objective ( the lowest point of the metal housing protecting the front lens ) to the sample surface when the sample is in focus.
- Field of View ( FOV ): The diameter of the area on the objective’s focal plane with diffraction-limited imaging quality.
- Entrance Pupil Diameter: The maximum diameter of parallel light that can pass unobstructed through the objective.
- Magnification: The objective itself produces parallel light, which cannot form an image directly. In practice, it must be used with a tube lens to form an image. The stated magnification refers to using a 200 mm focal length tube lens.
Product Data
Down.List
Product Declarations
2D / 3D file
Huygens Manual
Consultation Purchase
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