1. BS EN ISO 8980-3. Ophthalmic optics. Uncut finished spectacle lenses. Part 3. Transmittance specifications and test methods (23rd February 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (40 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Fibre optic interconnecting devices and passive components. Basic test and measurement procedures. Tests. High optical power Part 2-14, (1st April 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (22 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
3. Optics and photonics. Measurement of reflectance of plane surfaces and transmittance of plane parallel elements. (6th April 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (30 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
4. Optics and photonics. Test methods for telescopic systems. Test methods for transmittance Part 5, (15th June 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (24 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
5. Tracked Changes. Optics and photonics. Measurement of reflectance of plane surfaces and transmittance of plane parallel elements. (21st June 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (66 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
6. Plastics. Determination of the total luminous transmittance of transparent materials. Double-beam instrument Part 2, (30th June 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (14 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
7. Fibre optic interconnecting devices and passive components. Basic test and measurement procedures. Tests. Nuclear radiation Part 2-31, (15th November 1997) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (14 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
8. Optical fibre amplifiers. Basic spectrum analyzers. Transmitter output optical power measurement for single-mode optical fibre cable Part 1-1, (15th October 1998) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (10 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
9. Specification for filters with switchable or dual luminous transmittance for personal eye-protectors used in welding and similar operations. (15th May 1994) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (14 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
10. Consumable accessories for light microscopes. Immersion oils. Specification for immersion oils for general use Part 1-1.1, (15th June 1998) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (10 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗