This article or the following section is not adequately provided with supporting documents ( e.g. individual evidence ). Information without sufficient evidence could be removed soon. Please help Wikipedia by researching the information and including good evidence.
The angled lens is a special form of entocentric or telecentric lenses that have a bent object-side beam path . The beam is deflected with prism attachments . Angle lenses are particularly used in space-critical applications when a straight arrangement of lighting, test object, lens, camera is not possible.