M42 Mount Lens | MVL-LF4028M-M42 APS-C 40mm Focal Length FA LENS
- group name
- M42 Mount Lens
- Min Order
- 1 piece
- brand name
- MSTAR Machine Vision System
- model
- MVL-LF4028M-M42
- Nearest port for product export
- Shanghai, Ningbo
- Delivery clauses under the trade mode
- EXW
- Acceptable payment methods
- T/T
- update time
- Fri, 29 Oct 2021 16:52:36 GMT
Paramtents
Focal Length 40 mm
F-Number F2.8 ~ F22
Image Size Φ37 mm
Distortion 0.62%
Minimum Operation Distance 0.2 m
Magnification Range 0.04x ~ 0.22x
Field of View 4K 7μm（28.7 mm）：39°
Mount M42 × P1
Dimension Φ47.6 × 62.7 mm
Weight 171 g
Packging & Delivery
-
Min Order1 piece
Briefing
The large format fixed-focus lens are optimized for the application of line scan cameras in the machine vision industry.
Detailed
Introduction
MVL-LF4028M-M42 M42 Mount Lens
APS-C 40mm Focal Length FA LENS
The APS-C fixed-focus lens are optimized for the
application of large pixel line scan cameras in the
machine vision industry, with excellent imaging
quality, high image uniformity and low distortion
design, magnification range from 0.04x to 0.22x. It
is suitable for defect detection applications in PCB,
packaging and printing industry.
Key features
■ Large aperture, low distortion, low chromatic aberration and high relative illumination
■ Maximum image circle φ37mm, applicable to APS-C area scan and 4K line scan cameras
Specifications
Performance | |
Focal Length[mm] | 40 |
F/# | F2.8 ~ F22 |
Image Size | Φ37 mm |
Distortion | 0.62% |
Minimum Operation Distance | 0.2 m |
Magnification Range | 0.04x ~ 0.22x |
Field of View | 4K 7μm（28.7mm）：39° |
Mechanical |
|
|
Iris Control
|
Manual
|
|
Focus Control
|
Manual
|
|
Filter Thread
|
M37*0.75
|
Mount | M42 × P1 |
Flange Back Length | 12 mm |
Dimension | Φ47.6 × 62.7 mm |
Weight | 171 g |
Temperature | -10 ~ 50℃ |
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FAQ
What is the resolution(μm) of the lens?
Resolution is a measured by how closely 2 points can be before they cannot be distinguished. For example, 1μm resolution means that 2 points that are 1μm away from each other can be distinguished. Resolution values in this catalog are theoretical resolutions for the lenses. The following is a formula to calculate theoretical resolution based on a lens's ray diffraction with no aberration.
Resolution=0.61×λ/NA λ : Wavelength 0.61: Fixed Number
Distortion
(%)
Distortion is the aberration of a lens where a straight object outside of the optical axis appears curved. Distortion of a straight line towards the center is called pincushion distortion, while distortion expanding outwards is called barrel distortion
WD
(Working Distance)
Distance from the front end of a lens system to the object under inspection.
F Number
The value indicates lens brightness. It is calculated by dividing the focal distance of the lens by its effective diameter (entrance pupil diameter D mm) looking from its object side. It can also be calculated by NA and the lens' optical magnifi cation ( ). The smaller the number the brighter the lens is.
F No=f/D
Field of View
Field of view is the size of an object that can be shot when the lens is attached to a camera.
The size of fi eld of view is (sensor size) ÷ (optical magnification ).
(Calculation Example) Optical Magnification =0.2x, camera Size 1/2" (4.8mm Long, 6.4mm Wide) :
Size of Field of View Length =4.8/0.2=24 (mm)
Width =6.4/0.2=32 (mm)