Assertion: reflective collimator | /r/HasProperty | based on 90° off-axis parabolic mirror
Facets:
Source sentences:
text: These reflective collimators are based on a 90° off-axis parabolic mirror, which have a focal length that remains constant over a broad wavelength range.
text: These reflective collimators are based on a 90° off-axis parabolic mirror, which have a focal length that remains constant over a broad wavelength range.