41. Ophthalmic optics. Spectacle lenses. Short wavelength visible solar radiation and the eye. (28th September 2018) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (36 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
42. Ophthalmic optics. Spectacle lenses. Vocabulary. (15th August 1999) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (74 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
43. Ophthalmic optics. Uncut finished spectacle lenses. Transmittance specifications and test methods Part 3, (13th July 2022) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (48 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
44. 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) ↗
45. Optical fibres and cables. Specification for general requirements Part 1, (30th April 1985) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (58 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
46. Optics and optical instruments. Contact lenses. Determination of the spectral and luminous transmittance. (15th March 1997) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (16 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
47. 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) ↗
48. Optics and photonics. Optical materials and components. Test method for refractive index of infrared optical materials. (20th December 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) ↗
49. 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) ↗
50. Personal eye protection. Optical test methods. (15th December 1995) 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) ↗