Binoculars and Periscopes invert an image to make an object appear closer. There are two types of prisms that can be used for binoculars: Porro and Roof Prisms. Porro prisms are used in a pair to create an optical path. The image would pass through the first prism and which then inverts the image, the second prism then flips the image, so it is making the distant object appear closer.
Roof prisms work in a similar fashion however are one prism and this design performs in the same way. Used particularly for smaller compact spaces as there are aligned in one piece to its objective lenses.
Knight Optical’s Porro and Roof Prisms are available from stock, manufactured from high quality BK-7 or equivalent. They are also available to custom specifications with our capabilities for the two types:
•General Dimensions: 5mm to 300mm+
•Angular tolerance: <3arcseconds
•Surface form: <1/10th wave @ 633nm
•Surface quality: 10:5
•Coating options: AR or Mirror
Read PDF for Info
We supply a range of Telecom Grade Windows for a range of applications - Knight Optical can offer Telecom Grade Windows for use within Fibre Optic Applications.
We supply a range of Telecom Grade Windows for a range of applications. All individually QA checked and metrology tested for quality to ensure parts meet customer specification. Supplied in a range of sizes and shapes with custom coatings tailored to meet your individual applications.
Knight Optical supply precision optical components to customers within Fibre Optic Applications. Our Telecom Grade Windows are coated to minimise reflection in the telecoms waveband. These windows are optimized for fibre optic applications in the S and C bands between 1460nm to 1565nm while maintaining excellent transmission out of the operating wavelength.
For more information read PDF…
Material::B270 or equivalent, White Float
Shape::Circular Windows, Square Windows
Dimensional Tolerances::+/- 0.1mm
Parallelism::+/- 5 arc minutes
Surface Figure: :< 5(1) @ 633nm
Surface quality::< 40-20 Scratch/Dig
Merefields Supply a very wide range of HEAVY DUTY COMPONENTS,
please send email to liamm@merefields.com for a Quote.
We have over 10 Million Lines of Components in our Supply!
WE SUPPLY A WIDE RANGE OF MICROCHIP PARTS
WE HAVE OVER 10MILLION LINES OF COMPONENTS IN OUR SUPPLY.
PLEASE SEND liamm@merefields.com FOR QUOTE REQUESTS
WE STOCK LOADS OF LITTLEFUSE PARTS.
OUR RANGE IS FUSES, SENSORS, RELAYS AND SEMICONDUCTORS / DISCRETES.
Please send me an enquiry via liamm@merefields.com or enquires@merefields.com
We supply a range of Visible Sheet Polariser for a range of applications. All individually QA checked and metrology tested for quality to ensure parts meet customer specification. Supplied in a range of sizes and shapes with custom coatings tailored to meet your individual applications.
Knight Optical supply precision optical components to customers within Consumer Electronics. Our Linear Polarisers linearly polarise unpolarised light and can block light that is polarised in the opposite direction.
Linear Polarisers are often used in the production of LCD monitor and TVs. The liquid crystals act like a wave-plate, rotating the polarisation axis allowing them to control the amount of light from each pixel. They are used in a similar way for a photographer to prevent surface reflections from water.
Our polariser sheets allow different levels of total light from a randomly Read PDF for more information...
Shapes: :Circular Polarisers, Square Polarisers
Dimensional Tolerances::+/- 0.5mm
Surface Quality: :< 60-40 Scratch/Dig
For new designs see part M572T(kHz). HCMOS TCXO at 32.768kHz or from 20kHz to 50kHz. 7.0 x 5.0mm SMD package. Stability from ±1ppm -30°~+75°C. Part is RoHS compliant.
HCMOS TCXO at 32.768kHz or from 20kHz to 50kHz. 7.0 x 5.0mm SMD package. Stability from ±1ppm -30°~+75°C. Part is RoHS compliant.
Supply voltage 3.3 or 5.0 Volts
Frequency stability from ±1ppm over -30 to +75°C
RoHS compliant
For new designs see part M572T(kHz)
Product Series Code TCXO:EM57T VCTCXO: VEM57T
Frequency Range:32.768kHz Standard frequency 20.0kHz to 50.0kHz
Output Waveform:Squarewave
Initial Calibration Tolerance Models with mech. Trimmer:<1.0ppm (at t. 25°±2°C) Models without trimmer:
Frequency Stability vs. Ageing:±1.0 ppm max. first year vs. Voltage Change: ±0.3 ppm max. ±5% change
Supply Voltage:+3.3 or +5.0Volts (Specify when ordering)
Output Logic Levels:Logic High: 90% Vdd min. Logic Low: 10% Vdd max
Rise and Fall Times:10ns max
Duty Cycle:50%±5%
Start-up Time:2ms typical, 5ms max
Output Load:15pF
Storage Temperature:-55~+125°C
Knight Optical can offer Planoconvex Lenses for use within Optical Systems.
We supply a range of Planoconvex lenses for a range of applications. All individually QA checked and metrology tested for quality to ensure parts meet customer specification. Supplied in a range of sizes and shapes with custom coatings tailored to meet your individual applications.
Knight Optical supply precision optical components to customers with Optical systems. Planoconvex lenses are simple lenses with a plane surface and a convex surface and form a moderate quality image close to the axis. They are generally used as elements within a more complex lens system or optical instrument in imaging systems, collimation, lasers and detectors.
For more information read the PDF…
Material::N-BK7 or equivalent, UV Fused Silica, SF11 or equivalent
Dimensional Tolerances::+/- 0.1mm
Centering::< 3 arcminutes
Surface quality::< 40-20 Scratch/Dig
Surface Figure::< 5(1) @ 633nm
Coating::Antireflective coatings for application bandwidth (if required)
PECL output TCXO in a 6 pad, 7.0 x 5.0mm SMD package. Frequency range 10MHz to 800MHz. Stability from ±1ppm -30°~+75°C. Wide frequency range: 10.0MHz to 800.0MHz. PECL 'W' Group characteristics. RoHS Compliant.
Miniature 7 x 5 x 2.3mm ceramic SMD package
Frequency range: 10.0MHz to 800.0MHz
Supply voltage 3.3 Volts
Low cost, low jitter for general applications
RoHS compliant
Product Series Code TCXO:EMW576P VCTCXO: VEMW576P
Frequency Range:10.0MHz to 800.0MHz
Output Waveform:Differential PECL
Initial Calibration Tolerance:<±2.0ppm at +25°±2°C
Standard Frequencies:10.0, 12.8, 16.0, 19.44, 20.0, 27.0, 30.0, 32.768, 38.880, 40.0, 50.0
Frequency Stability ( ) vs. Ageing:±1.0 ppm max. first year vs. Voltage Change: ±0.3 ppm max. ±5% change
Supply Voltage:+3.3 Volts
Output Logic Levels Logic High:VOH = 2.275V (min.) VDD = -1.025V (min.) Logic Low: VOL = 1.680V (max.)
Rise and Fall Times:1.5ns typical
Duty Cycle:50%±5%
Start-up Time:5ms typical, 10ms max.
Current Consumption 10MHz to 25MHz:65mA 25MHz to 100MHz: 85mA 100MHz to 800MHz: 115mA
Output Load:50W to VDD -2.0 Volts
Storage Temperature:-55° to +125°C
When looking for the best conveyor belt drive components for your machine, look no further than Wire Belt’s customised sprockets and blanks. We can guarantee the perfect fit to keep your lines running smoothly and efficiently. Whatever drive component you may be looking for, we offer a variety of materials to meet your needs. To find out more about our solutions, contact our Technical Sales Engineers.
Knight Optical can offer Precision Grade Aspheric Lenses for use within Optical Systems.
We supply a range of Precision Grade Aspheric lenses for a range of applications – all individually QA checked, and metrology tested for quality to ensure parts meet customer specification. What’s more, our Precision Grade Aspheric Lenses are supplied in a range of sizes and shapes with custom coatings tailored to meet your individual applications.
Knight Optical supply precision optical components to numerous customers with optical systems. Aspheric lenses are used to correct spherical aberrations and can be as effective as a multi-lens system while taking up less physical space; therefore, reducing weight and cost. As such, these lenses are often used in military applications, such as night-vision goggles or missile guidance systems
Please read PDF for more Information ….
Material::N-BK7 (or equivalent), UV Fused Silica, SF11 (or equivalent)
Dimensional Tolerances::+/- 0.1mm
Centering::< 3 arcminutes
Surface quality::< 40-20 Scratch/Dig
Surface Figure::< 5(1) @ 633nm
Coating::Anti-Reflective (AR) coatings for application bandwidth (if required)
Clipped-sinewave output TCXO in a miniature 5.0 x 3.2mm SMD package. Stability from ±0.5ppm 0°~+50°C. Output level 0.8Vp-p min. into a 10k Ohms //10pF load.
Clipped-sinewave output TCXO in a miniature 5.0 x 3.2mm SMD package.
Wide frequency range: 1.25MHz to 156.0MHz
Supply voltage 2.5, 3.0 or 3.3 Volts
Frequency stability from ±1ppm over -30 to +75°C
Stability from ±0.5ppm 0°~+50°C. Output level 0.8Vp-p min. into a 10k Ohms //10pF load
Product Series Code TCXO:EM44T VCTCXO: VEM44T
Frequency Range:1.25MHz to 156.0MHz
Output Waveform:Squarewave, HCMOS
Initial Calibration Tolerance:<±1.0ppm at +25°±2°C
Standard Frequencies:10.0, 12.8, 13.0, 14.4, 15.36, 16.384, 19.2, 19.440, 19.68, 25.0, 20.0
Frequency Stability vs. Ageing:±1.0 ppm max. first year vs. Voltage Change: ±0.3 ppm max
Supply Voltage:+2.5, +3.0 or 3.3 Volts (Specify when ordering)
Output Voltage Level:0.8V p-p minimum
Start-up Time:2ms typical, 5ms max
Output Load:10kΩ//10pF ±10%
Harmonic Distortion:-10dB typical, -7dB max
Storage Temperature:-50° to +100°C
WE SUPPLY A VERY WIDE RANGE OF OMRON PARTS.
WE HAVE OVER 10 MILLION LINES OF COMPONENTS IN OUR SUPPLY.
IF YOU HAVE ANY REQUIREMENT ON THIS PRODUCT OR SIMILAR,
PLEASE CONTACT liamm@merefields.com
We have all types of wires whether it is for indoor or outside use our heatshrinks is just one of our wide range of products we have. Please send me an enquiry via liamm@merefields.com or enquires@merefields.com
CXOL oscillators are ultra-miniature (32. x 1.5mm), ultra-low current quartz crystal oscillators with a typical start-up time of 200ms. Hermetically sealed in a highy reliable ceramic housing, these oscdillators are available over a wide range of input voltages (1.2V ~ 5.0V).
This is a Statek product manufactured by Statek Inc, America. Contact Euroquartz Sales or Technical for details.
Ultra-low current consiumption
Typical start-up time of 200ms
Typical Rise/Fall times of 25ns
Hermetically sealed ceramic package
Optional output enable/disable with Tri-state
Full military testing per MIL PRF 55310 available
Supply 1.2 to 5.0V
Enable/Disable included
Frequency Range:32.0kHz to 100.0kH
Supply Voltage:+1.2 Volts to +5.0 Volts ±10%
Current Consumption:32.768kHz: 2.8µA 32.768kHz: 0.4µA 100.0kHz: 8.0µA
Calibration Tolerance:±20ppm, ±50ppm or ±100ppm
Voltage Coefficient:±1ppm/V
Output Load:10pF (CMOS)
Ageing First Year:±2ppm
Shock, Survival:Standard: 5000g, 0.3ms, ½ sine
Vibration Survival:20g, 10~2000Hz swept sine
Start-up Time:200ms
Operating Temperature:-10°C to+70°C (Commercial) -40°C to +85°C (Industrial) -55°C to +125°C (Military
Storage Temp:-65C to +125C (max)
Ageing:52ppm (max) for first year
Plane Mirrors (general, λ/1 and λ/4), for Laser Distance Measurement Application - Knight Optical can offer you Plane Mirrors (general, λ/1 and λ/4), for use within Laser Distance Measurement Applications in a range of materials such as Soda-lime float glass, white float glass, and BK7 glass.
Plane mirrors also known as front surface mirrors or first surface mirrors are used widely within Laser Distance Measurement applications. As stock we hold a number of general purpose, λ/1 and λ/4 with a range of up to 6 types of coatings such as Enhanced Aluminium, Ali/SiO2 and Ali/Mgf2. Our general purpose grade mirrors are made from good quality float glass and generally available in thicknesses of 1mm, 3mm and 6mm as standard.
Laser Distance Measurement devices utilise the use of a laser beam to be able to determine the distance of an object. How optical mirrors are used in conjunction with these devices is that, a mirrored surface can be measured with a laser tracker; which will help determine the distance between the laser distance Read PDF for full information..
Material::Soda lime float glass, BK7 or equivalent
Diameter Tolerance::+0/-0.2mm
Lengths/ width:: ±0.3mm (≤100mm), ±0.5mm (>100mm)
Thickness::±0.25mm
Surface quality::<60-40 scratch/dig for general purpose, <40-20 scratch/dig for λ/4
1.1mmthk::1λ over 10mm dia.
3/6mmthk: :2λ over 25mm dia.
Parallelism::<3 arcmin
Knight Optical offers a range of precision optical components for use in IPL (Intense Pulsed Light) applications. The most common usage of IPL systems are typically used as photo epilators.Custom Ceramic Reflectors are a key component for this application. The xenon flash lamp which are typically used emit light in 360 degrees. However utilising ceramic reflectors which are light reflectors with a U channel means that light which would normally be wasted i.e. shining backwards is now refocused down into the filters and light guides.
Knight Optical provides ceramic reflectors which are typically moulded from alumina. This choice of material is down to its ability to withstand thermal stresses and high reflectivity values.
For more information read PDF
Available with two styles of formed lead configurations, 2mm x 6mm SMD crystals have excellent shock resistance. They are low-cost components and an efficient solution for general real time clock applications.
Low-cost and low mass SMD crystal, 32.768kHz
Real-time clock oscillators
Nominal Frequency:32.7680kHz
Calibration Tolerance:±20ppm m@25°C
Turnover Temperature:25°±5°C
Operating Temperature Range:-40° to +85°C
Storage Temperature Range:-55° to +125°C
Equivalent Series Resistance:35kΩ maximum
Load Capacitance (CL):12.5pF or 6pF Moti
Motional Capacitance (C1):0.003pF typical
Shunt Capacitance (C0:1.35pF typical
Capacitance Ratioo:150 typical
Drive Level:1µW maximum
Insulation Resistance:500MΩ maximum
Ageing:±3ppm/year maximum
Sealing:1x10-6µPa.m3/s maximum
Shock Resistance:±5ppm maximum, 3000g x 0.3m/s ½ sine, 3 planes
Soldering Temperature:240°C for 7 seconds maximum
AG crystals are ultra-miniature SMD components specifically designed to provide 32.768kHz for real-time clocks. Their ultra-small size and rugged construction make them suitable for a wide range of applications including battery powered, hand-held equipment and any application requiring miniaturization
Frequency 32.7680kHz (also 75kHz)
Ultra-miniature size 7.0 x 1.5 x 1.4mm SMD
Low mass and rugged construction
Supplied taped and reeled
Suitable for a wide range of real-time clock applications
Nominal Frequency:32.7680kHz and 75.0kHz
Calibration Tolerance:±20ppm of ±50ppm (standard)
Load Capacitance:12.5pF standard or 7pF
Equivalent Series Resistance 32.768kHz:65kΩ maximum
75.0kHz:30kΩ maximum
Drive Level:1.0µW max, 0.5µW operating
Parabolic Coefficient:-0.04ppm/°C2 maximum
Peak Temperature:+25°C
Shunt Capacitance (C0):0.8pF typical
Motional Capacitance (C1):1.9fF typical
Ageing:±3ppm /year max. at +25°C
Insulation Resistance:500MΩ min. @100VDC
Crystal Cut:X-Cut
Operating Temperature Range:-40° to +85°C
Storage Temperature Range:55°C to +125°C
Reflow Soldering:10s max. @+260°C twice or <230°C for 3 minutes
RoHS Status:RoHS Compliant, pB free
Packaging:16mm EIA tape and reel 3000 pieces per reel
Merefields Supply a very wide range of HIRSCHMANN PARTS,
please send email to liamm@merefields.com for a Quote.
We have over 10 Million Lines of Components in our Supply!
Known for their resistance to mechanical and thermal shock, our Magnesium Fluoride (MgF2) Windows are specified for a variety of applications operating in a range of harsh environments. Commonly employed for high-tech applications include excimer lasers, Fourier-transform infrared spectroscopy (FTIR), thermography and other infrared (IR) systems, MgF2’s durability and birefringent properties make for a sought-after optical window across a spectrum of industries. What’s more, its stability in water means it’s ideally suited for outer surfaces, such as windows.
With its birefringence (beneficial for polarisers in the UV waveband), transmittance between 0.1µm and 7µm and at over 90% between 0.4-5.0µm and hardness of circa HK576, MgF2 is one of the hardest optical fluorides.
For more information read PDF ……
Material::Magnesium Fluoride (MgF2)
Thickness::+/-0.2mm
Diameter::+/-0.2mm
Surface quality::<60-40 Scratch/Dig
Knight Optical can offer you Plane Mirrors (general, λ/1 and λ/4), for use within Fibre Optic Applications in a range of materials such as Soda-lime float glass, white float glass, and BK7 glass.
Our plane mirrors are used within fibre optic applications such as testing the fibre optic signal to help understand the strength of the signal.
Plane mirrors also known as front surface mirrors or first surface mirrors are used widely within Fibre Optic applications. As stock we hold many general purpose, λ/1 and λ/4 with a range of up to 6 types of coatings such as Enhanced Aluminium, Ali/SiO2 and Ali/Mgf2. Our general purpose grade mirrors are made from good quality float glass and generally available in thicknesses of 1mm, 3mm and 6mm as standard.
READ PDF FOR MORE INFORMATION
Material::Soda lime float glass, BK7 or equivalent
Diameter Tolerance::+0/-0.2mm
Lengths/ width::±0.3mm (≤100mm), ±0.5mm (>100mm
Thickness::±0.25mm
Surface quality::<60-40 scratch/dig for general purpose, <40-20 scratch/dig for λ/4
1.1mmthk::1λ over 10mm dia.
3/6mmthk: :2λ over 25mm dia.
Parallelism::<3 arcmin
HCMOS TCXO at 32.768kHz or from 20kHz to 50kHz. 7.0 x 5.0mm SMD package. Stability from ±1ppm -30°~+75°C
Miniature 7 x 5 x 2.3mm SMD package
Frequency range: 20.0kHz to 52.7kHz including 32.768kHz
Supply voltage +3.3 Volts
Frequency stability from ±1ppm over -30 to +75°C
RoHS compliant
Product Series Code TCXO:EM572T VCTCXO: VEM572T
Frequency Range:20.0kHz to 52.7kHz
Standard Frequency:32.768kHz
Output Waveform:Squarewave, HCMOS
Initial Calibration Tolerance:<±2.0ppm at +25°±2°C
Frequency Stability vs. Ageing:±1.0 ppm max. first year vs. Voltage Change: ±0.2 ppm max. ±5% change
Supply Voltage:+3.3 V
Output Logic Levels:Logic High: 90% Vdd min Logic Low: 10% Vdd max
Rise and Fall Times:10ns max
Duty Cycle:50%±10% standard, 50%±5% option
Start-up Time:10ms max
Output Load:15pF
Storage Temperature:-55~+125°C