We are instrumental in designing and marketing a highly functional range of front surface mirrors, optical mirror that is an imperative aspect of optical imaging. These optical mirror are offered to our clients in various specifications of size, MOC and others which can be customized to suit the application needs. We custom make these front surface mirrors, optical mirror to a maximum size of 300 mm (diagonal) and also offer Pyrex, Fused Quartz or Zerodur mirrors as per the demands of our clients.

Technical Specifications:

Material	BK-7 Optical Glass
Dimensional Tolerance	± 0.15 mm
Surface Quality	60-40 Scratch & Dig
Surface Accuracy	?/4 @ 632.8 nm
Bevel	0.3 mm x 45°
Reflectivity	Aluminum with protective overcoat R > 90% @ 632.8 nm

Round & Square Mirrors:

Stock No	Dimensions	Thickness
MR-01 MR-02 MR-03 MR-04 MR-18	25 x 25 mm 25 mm Ø 50 x 50 mm 50 mm Ø 32 x 20 mm	4 mm 4 mm 10 mm 10 mm 5 mm

Manufactured using BK-7 grade of optical glass or fused quartz of 0.06 or 0.13 micron, our range of optical flats is used for inspection of gauge blocks, mechanical seals, pump valves, auto parts, prisms, filters, mirrors and windows. The diameters of the raw material range from 25mm to 100mm. These optical flats are used to measure the flatness of unknown surfaces as a reference by means of property of interference.

The principle of operation of these flats is given below:

• Optical flats on a test surface form air wedges where the surfaces do not touch
• Thickness of the air wedge changes that shows the direction and shape of the interference bands
• This change will make light and dark bands visible under monochromatic light
• These bands are interference fringes whose shape gives off a visual representation of the flatness of the test surface.

The details and specifications of these flats are given below

• Measured for accuracy through the fractions of a reference wavelength
• Surface accuracy derived from the amount of curve and spacing between the interference fringes
• Straight and parallel interference fringes refers that the tested surface has a flatness more than or equal to the reference surface
• An uneven interference pattern with optical flats indicates that the flatness of the test surface is less than that of the reference surface.

Part No	Diameter (mm)	Thickness (mm)
OF-25	25	10
OF-30	30	12
OF-50	50	15
OF-75	75	20
OF-100	100	25
OF-125	125	30
OF-150	150	35

Material	BK-7 / Fused Silica
Surface Quality	80-50 Scratch & Dig
Diameter Tolerance	± 0.5 mm
Thickness Tolerance	± 1 mm
Surface Accuracy	?/4, ?/6, ?/10 (? = 0.633µm)
Angle Tolerance	< 10 minutes
Bevel	0.5 mm x 45°

These optical flats can be customized for our clients in terms of their special tolerances, diameters and MOC. Our optical flats are supplied to our clients along with the following:

• Accompanied by Flatness Inspection Report
• Inspection carried out in Laser Fizeau Interferometer
• Reference Flat (/20) traceable to NIST
• Evaluation of flatness conducted with Licensed Quick Fringe Software
• Cosmetic Defects: According to US MIL Standard
• Supplied in a wooden case

Our clients can avail from us, quality approved range of optical prisms that is used for various imaging tasks. These optical prisms are basically blocks of optical material with flat and polished side that are arranged in precisely controlled angles to one another.

Technical Specifications:

Prisms		Standard	Precision
	Material	BK-7/Fused Silica
Right Angle Prisms	Dimensional Tolerance	0.15 mm	0.02 mm
Penta Prisms	Surface Quality (Scratch & Dig)	80-50	20-10
Equilateral Prisms	Surface Flatness@632.8nm	l/2	l/10
Dove Prisms	Angle Tolerance	3 Min	<5 secs
Amici Roof Prisms	Bevel	0.2 mm x 45°
Anamorphic Prisms	Size Range	5 mm --- 100 mm
Corner Cube Prisms	Coatings	Al+SiO/ SLARMgF2

Widely used for checking the flatness and parallelism of micrometer anvils, our optical parallels are specially designed to observe light wave interference fringes. These parallels use monochromatic light sources for observing fringes/light bands.

Manufactured in accordance to the standards of NPL (National Physical Laboratory) and specifications of MOY/SCMI/54, these parallels hold the following features and specifications:

• Thickness of the four Optical Parallel appropriate for every quarter turn of the micrometer screw
• One of the parallel is used for inspection of parallelism
• Parallelism between the Anvil and the Micrometer screw measured by the number of light bands at each of the four positions of the micrometer screw.

Part No	Diameter (mm)	Thickness (mm)
OP-01	30	12.000, 12.125, 12.250, 12.375
OP-02	50	25.000, 25.125, 25.250, 25.375

Material	Fused Silica
Surface Quality	80-50 Scratch & Dig
Diameter Tolerance	± 0.15 mm
Thickness Tolerance	± 0.01 mm
Surface Accuracy	0.2 µm
Parallelism	0.1 µm
Bevel	0.5 mm x 45°

The details of the consignments of these optical parallels are given below:

• Accompanied by Flatness Inspection Report
• Parallelism Inspection by Haindenger Fringe method
• Inspection carried out in Laser Fizeau Interferometer
• Reference Flat (/20) traceable to NIST
• Evaluation of flatness conducted with Licensed Quick Fringe Software
• Cosmetic Defects: According to US MIL Std
• Set of four supplied in a wooden case.