摘要:
A control apparatus includes a control unit configured to control an irradiation timing at which pulsed illumination light is radiated in a first picture period in which an image pickup device performs reading so as to differ from an irradiation timing at which the illumination light is irradiated in a second picture period succeeding the first picture period and having the same cycle as the first picture period. In the image pickup device, a plurality of pixels are arranged in two dimensions to generate an imaging signal by performing photoelectric conversion on an optical image of a subject. The image pickup device is configured to read out the imaging signal generated by the plurality of pixels for each horizontal line.
摘要:
Provided is an imaging system that can prevent exposure unevenness in an image even though exposure and readout of an imaging element are performed with timing shifted for every line. An imaging system 1 includes: an illumination unit 41 that emits illumination light for illuminating a subject; a light receiving unit 244f in which pixels are arranged two-dimensionally, each pixel receiving light and generating an electric signal by performing photoelectric conversion of the light; a readout unit 244g that sequentially reads out the electric signal for every horizontal line from the light receiving unit 244f; and an illumination controller 42 that keeps intensity of the illumination light emitted from the illumination unit 41 constant in at least a part of a readout period where the readout unit 244g reads out the horizontal line of the light receiving unit 244f in one frame or one field period, and outside the readout period, variably controls an illumination time of the illumination light emitted from the illumination unit 41.
摘要:
An image pickup system that performs image pickup control of a rolling shutter type such that an all line exposure period (Ta) and a non-all line exposure period (Tr) are generated and controls a light source of illumination light to increase or decrease (CI1, CI2), in a first light adjustment mode, while maintaining a light amount of the illumination light in a first period (T1) during the all line exposure period (Ta) at a predetermined level, a light amount of the illumination light during a second period (T2) including the all line exposure period (Ta) other than the first period (T1) and the non-all line exposure period (Tr) compared with an immediately preceding second period (T2).
摘要:
Provided is an endoscope system including: a light source apparatus (3) including LEDs (23r, 23 g, 23b) of a plurality of colors and a color sensor (27) that detects a failure in the LEDs; a scope (2) that irradiates a subject with illuminating light generated by the light source apparatus (3) and takes in an optical image of the subject; a CCD (13) that picks up an image of the optical image of the subject; a video processor (4) that processes the image picked up by the CCD (13); and a monitor (5) that displays an image processed by the video processor (4), wherein if a failure of any of the LEDs is detected by the color sensor (27), the video processor (4) switches image processing to image processing according to light emission of only the LED for which the failure is not detected, the image processing being different from that when the failure of the LED is not detected.
摘要:
A light source apparatus (1) which has a lamp (2), a power source (3), a light adjustment control module (33) that controls power to be supplied to the lamp (2) by the power source (3) within a range not more than an upper limit power and controls the amount of outgoing light from the lamp (2), and a continuous lighting sensing module (32) that measures a continuous lighting time period during which a lighted state is maintained without interruption, from a time point when the lamp (2) shifts from an extinguished state to the lighted state and senses whether the continuous lighting time period has reached a predetermined upper limit time period, and initializes the continuous lighting time period within a period during which the lamp (2) is in the extinguished state, wherein the light adjustment control module (33) performs control such that the upper limit power is a first upper limit power when the continuous lighting time period is not sensed to have reached the upper limit time period and performs control such that the upper limit power is a second upper limit power lower than the first upper limit power when the continuous lighting time period is sensed to have reached the upper limit time period.