Tyto Lenses

Tyto Diagram

Designed with a very short back working distance (BWD), this line of lenses strives to be as compact as possible. With the absence of a stop location, this line is the perfect candidate for uncooled LWIR systems.  It is also standard practice to judge imager performance using F/1.0 optics, such as the lenses of the Tyto line.

 


 


Focal Length
18mm
25mm
50mm
Part Number
40687-001
40688-AA1
40689-AA1
F#
1.0
1.0
1.0
Wavelength
7 – 14µm
7 – 14µm
7 – 14µm
Image Diagonal
21mm
21mm
21mm
Stop Size
N/A
N/A
N/A
Stop Position
N/A
N/A
N/A
BWD
13.4mm
13.4mm
11.7mm
Flange to F.P.
19.8mm
19.8mm
19.8mm
Mount Type
T
T
T
Circular FOV (degrees) ***
58
43
22
Weight (g)
284
370
284
Min. Obj. Distance **
50mm
200mm
500mm
Focus Type
M
M
M
Transmission (typical) *
93%
93%
93%

 

Notes:
*** Based on the listed Image Diagonal, FOV will vary depending on focal plane size.
** Closest an object can be focused in on.
* Over the primary waveband, 7 – 14µm.

Mount Type:
T = Threaded Mount
F = Flange Mount
M = Manual Focus

MT – Motorized Focus