| Answer | Crossword Clue |
|---|---|
| refractor | A lens or other object that causes refraction |
| refractors | A lens or other object that causes refraction |
| camerae | device that consists of a lightproof chamber with an aperture fitted with a lens and a shutter through which the image of an object is projected onto a surface for recording (as on film) or for translation into electrical impulses (as for television broadcast) |
| backscatter | Light from a flashgun or other light source that is deflected directly into a lens |
| eyepiece | The lens or group of lenses that is closest to the eye in a microscope, telescope, or other optical instrument |
| eyepieces | The lens or group of lenses that is closest to the eye in a microscope, telescope, or other optical instrument |
