Science Store - Optical Components

Front Silvered Glass Mirrors
Lenses
Polarising Film
Diffraction Grating

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Diffraction

OPTICAL COMPONENTS

Front Silvered Glass Mirrors
Front silvered mirrors avoid the double reflections which you get with normal rear-silvered mirrors where light is reflected off the front surface of the glass as well as the silvered surface. Warning: Handle with care as they are susceptible to scratching although the silvering is protected by a vacuum deposited quartz coating.

Plane mirror 28 x 20 x 1.3mm
Order Code: OPM0001 Price: £3.90

Concave mirror 70mm dia x 450mm focal length
Order Code: OPM0002 Price: £12.90

Lenses
We have two ranges of top quality German Acrylic and Glass Lenses for all your optical experiments in a range of sizes and focal lengths. The Acrylic lenses are the same as used in the telescope kits. Most of the the glass lenses are 2 lens Achromats for less colour aberration

(You can select the quantity and type of lenses you require and add them all to the shopping cart in one go. If you need a different number of any type you can adjust the quantity in the shopping cart.)

ACRYLIC
Order Code	Type	Diameter	Focal Length	Price	Select	Quantity
OPL1	concave	16.5mm	-35mm	£1.25
OPL1A	concave	13mm	-60mm	£1.40
OPL2	convex	16.5mm	+15mm	£1.25
OPL3	convex	16.5mm	+30mm	£1.25
OPL4	convex	16.5mm	+49mm	£1.25
OPL5	convex	16.5mm	+65mm	£1.25
OPL6	convex	16.5mm	+120mm	£1.25
OPL7	convex	34.5mm	+106mm	£1.75
OPL7A	convex	34.5mm	+170mm	£1.75
OPL8	convex	34.5mm	+225mm	£1.75
OPL8A	convex	40mm	+180mm	£1.80
OPL9	convex	45mm	+360mm	£2.10
OPL9A	convex	50mm	+245mm	£2.30
OPL10	convex	62mm	+275mm	£2.70
OPLSET	Experimenters set of one each of the acrylic lenses (14 in total) OPL1 to OPL10. Buy the set and save 20% on the price of the individual lenses.			£18.44
OPL20 NEW	convex	110mm	+333mm	£6.00

GLASS
Order Code	Type	Diameter	Focal Length	Price	Select	Quantity
OPL31	convex	21.5mm	+34.1mm	£1.70
OPL32	convex	25.5mm	+42.9mm	£1.95
OPL51	2 lens achromat	18mm	+26.5mm	£3.10
OPL52	2 lens achromat	18mm	+39.5mm	£3.10
OPL61	2 lens achromat	30mm	+135.5mm	£3.70
OPL62	2 lens achromat	35mm	+147.3mm	£3.90
OPL63	2 lens achromat	40mm	+156.4mm	£4.10
OPL64	2 lens achromat	50mm	+182.8mm	£4.80
OPL69	2 lens achromat	30mm	+250mm	£3.90
OPLGSET	Experimenters set of all 9 glass lenses above - Buy the set and SAVE £5.35 on the price of the individual lenses.			£24.90
OPL83 NEW	2 lens achromat	80mm	+330mm	£Out of Stock

Fresnel Lenses Flat lenses, invented by French physicist A.L. Fresnel, consisting of concentric prismatic rings which act like a large lens.
	60 x 60 x 0.3mm, focal length +118mm. Order Code: OPLF1 Price: £1.90 108mm diameter, focal length +100mm. Order Code: OPLF2 Price: £2.30
274 x 210mm, focal length +310mm. Order Code: OPLF3 Price: £4.90
	Sheet with one magnifiying lens (75 x 177mm) and 25 small (33 x 33mm) diverging lenses, focal length +310/-100mm. Order Code: OPLF4 Price: £3.30 Buy the set of all 4 lenses. Save 20%. Order Code: OPLFSET Price: £9.90

	Polarising Film Linearly polarised film for reducing reflections or for polarisation experiments (e.g. view stress patterns in plastic items). Transmissivity: single sheet = 42%, 2 sheets crossed polaristation = <0.15%. Thickness 0.14mm. Sheet 100mm x 50mm (makes two 50 x 50mm pieces). We can also supply this to order in sheets 350mm wide cut to the length you require (in 100mm increments) at £29.35 per 100mm. Order Code: OPF0001 Price: £5.99
Diffraction Grating Transmission diffraction grating (900 lines per mm) transparent film. The high line density produces a wide coloured spectrum of the observed or projected light source similar to a prism. Make a hand spectroscope! Size 152 x 38mm sufficient for four 35mm slideholders which can easily be made from the cardboard box. Larger sizes available on request. Order Code: OPF0002 Price: £7.99
	Optical Illusion Plastic This plastic sheet is less than 1mm thick but it is engraved so that it looks as though it is much thicker. Objects placed on the sheet appear to sink below the surface. A4 sheet. Order Code: CDT0249 Price: £3.99

Solar Photopaper A special paper based on the early days of photography. Lay an object on the paper and place it in the sun for a short time and it will leave behind an outline like a papercut design. Developing and fixing without water or a dark room. Totally safe, made from recycled paper. 20 A5 sheets with instructions. Order Code: CDT0228 Price: £Out of Stock
	Glow in the Dark Paper Self-Adhesive Photophorescent paper. A4 sheet. This paper is coated with a phosphorescent material which glows in the dark after exposure to light. You can cut out any shapes you like (e.g. direction arrows, faces, stars and comets, etc.) and stick them where required. Order Code: CDT0245 Price: £7.99