31. BS ISO 14132-3. Optics and photonics. Vocabulary for telescopic systems. Part 3. Terms for telescopic sights (13th March 2020) 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) ↗
32. BS ISO 14135-1. Optics and photonics. Specifications for telescopic sights. Part 1. General-purpose instruments (13th March 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (15 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
33. BS ISO 14135-2. Optics and photonics. Specifications for telescopic sights. Part 2. High-performance instruments (17th March 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (15 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
34. BS ISO 14490-3. Optics and photonics. Test methods for telescopic systems. Part 3. Test methods for telescopic sights (13th March 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (23 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
35. BS ISO 14490-5. Optics and photonics. Test methods for telescopic systems. Part 5. Test methods for transmittance (9th October 2020) 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) ↗
36. BS ISO 15368. Optics and photonics. Measurement of reflectance of plane surfaces and transmittance of plane parallel elements. (25th March 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (28 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
37. BS ISO 17328. Optics and photonics. Optical materials and components. Test method for refractive index of infrared optical materials. (8th January 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (23 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
38. BS ISO 18951-1. Imaging materials. Scratch resistance of photographic prints. Part 1. General test method (25th November 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (20 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
39. BS ISO 19056-3. Microscopes. Definition and measurement of illumination properties. Part 3. Incident light fluorescence microscopy with incoherent light sources (16th April 2021) 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) ↗
40. BS ISO 23364. Optics and Photonics. Bulk absorption optical filters. (10th June 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (25 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗