摘要:
An optical system for endoscopes which comprises a stop having a variable aperture and is configured so as to produce spherical aberration for preventing an image surface thereof from being shifted in a direction opposite to the object side by narrowing the aperture of the stop, whereby the optical system is free from insufficiency in brightness and degradation in resolution thereof on a side farther from the optical system within a depth of field thereof, and has another side of the depth of field brought close to the optical system.
摘要:
This automatic changer system easily performs the operation of rewriting a program and acquiring the data of the system. The system includes program rewriting means (12) responsive to the application of a program rewrite command for selecting a storage medium (10) storing a new control program, reading in the new control program, erasing the previously stored control program stored in storage means (11) and storing the new control program in the storage means (11).