plano-concave

adj.

平凹的；

SINGLET IMAGING LENSES - CVI Melles Griot
BEAM STEERING - Special Optics, Inc.
planoconcave
Focusing by plano-concave lens using negative refraction
The use of a negative index planoconcave lens array for wide-viewing angle integral imaging
New plano-concave ultrasonic resonator cells for absorption and velocity measurements in liquids below 1 MHz
Brush having a plano-concave profile
Planoconcave lens by negative refraction of stacked subwavelength hole arrays
Plano-convex or plano-concave lens with beam deflecting means attached thereto
Negative refraction and plano-concave lens focusing in one-dimensional photonic crystals